Provided by: xymon_4.3.28-4_amd64 bug

NAME

       hosts.cfg - Main Xymon configuration file

SYNOPSIS

       hosts.cfg

DESCRIPTION

       The  hosts.cfg(5)  file  is  the  most  important  configuration file for all of the Xymon
       programs.  This file contains the full  list  of  all  the  systems  monitored  by  Xymon,
       including the set of tests and other configuration items stored for each host.

FILE FORMAT

       Each  line of the file defines a host. Blank lines and lines starting with a hash mark (#)
       are treated as comments and ignored.  Long lines can be broken up by putting  a  backslash
       at the end of the line and continuing the entry on the next line.

       The format of an entry in the hosts.cfg file is as follows:
          IP-address hostname # tag1 tag2 ...

       The  IP-address  and hostname are mandatory; all of the tags are optional.  Listing a host
       with only IP-address and hostname will cause a network test to be executed for the host  -
       the connectivity test is enabled by default, but no other tests.

       The  optional tags are then used to define which tests are relevant for the host, and also
       to set e.g. the time-interval used for availability reporting by xymongen(1)

       An example of setting up the hosts.cfg file is in the Xymon  on-line  documentation  (from
       the  Help  menu,  choose  "Configuring Monitoring").  The following describes the possible
       settings in a hosts.cfg file supported by Xymon.

TAGS RECOGNIZED BY ALL TOOLS

       include filename
              This tag is used to include another file  into  the  hosts.cfg  file  at  run-time,
              allowing for a large hosts.cfg file to be split up into more manageable pieces.

              The  "filename"  argument  should  point  to  a  file  that uses the same syntax as
              hosts.cfg. The filename can be an absolute filename (if it begins with a '/'), or a
              relative  filename  - relative file names are prefixed with the directory where the
              main hosts.cfg file is located (usually $XYMONHOME/etc/).

              You can nest include tags, i.e. a file that is included  from  the  main  hosts.cfg
              file can itself include other files.

       dispinclude filename
              Acts  like  the "include" tag, but only for the xymongen tool.  Can be used e.g. to
              put a group of hosts on multiple sub-pages,  without  having  to  repeat  the  host
              definitions.

       netinclude filename
              Acts like the "include" tag, but only for the xymonnet tool.

       directory directoryname
              This  tag  is used to include all files in the named directory.  Files are included
              in alphabetical order.  If  there  are  sub-  directories,  these  are  recursively
              included  also. The following files are ignored: Files that begin with a dot, files
              that end with a tilde, RCS files that end with  ",v",  RPM  package  manager  files
              ending in ".rpmsave" or ".rpmnew", DPKG package manager files ending in ".dpkg-new"
              or ".dpkg-orig", and all special files (devices, sockets, pipes etc).

       optional include/directory
              Both "include" and "directory" can be prefixed with the tag "optional", which  will
              preven  an  error message being logged if the file or directory is not present on a
              system.

GENERAL PER-HOST OPTIONS

       noclear
              Controls whether stale status messages go purple or clear  when  a  host  is  down.
              Normally,  when  a  host  is down the client statuses ("cpu", "disk", "memory" etc)
              will stop updating - this would usually make them go  "purple"  which  can  trigger
              alerts.  To  avoid that, Xymon checks if the "conn" test has failed, and if that is
              true then the other tests will go "clear" instead of purple so you only get  alerts
              for  the  "conn"  test. If you do want the stale statuses to go purple, you can use
              the "noclear" tag to override this behaviour.

              Note that "noclear" also affects the behaviour of network tests; see below.

       prefer When a single host is defined multiple time in the hosts.cfg file,  xymongen  tries
              to guess which definition is the best to use for the information used on the "info"
              column, or for the NOPROPRED and other xymongen-specific settings. Host definitions
              that have a "noconn" tag or an IP of 0.0.0.0 get lower priority.

              By  using  the  "prefer"  tag you tell xymongen that this host definition should be
              used.

              Note: This only applies to hosts that are defined multiple times in  the  hosts.cfg
              file, although it will not hurt to add it on other hosts as well.

       multihomed
              Tell  Xymon  that  data  from  the  host can arrive from multiple IP-addresses.  By
              default, Xymon will warn if it sees data for one host  coming  from  different  IP-
              addresses, because this usually indicates a mis-configuration of the hostname on at
              least one of the servers involved. Some hosts with multiple  IP-addresses  may  use
              different  IP's  for sending data to Xymon, however. This tag disables the check of
              source IP when receiving data.

       delayred=STATUSCOLUMN:DELAY[,STATUSCOLUMN:DELAY...]
              Usually, status changes happen immediately. This tag is used to defer an update  to
              red    for    the    STATUSCOLUMN    status   for   DELAY   minutes.   E.g.    with
              delayred=disk:10,cpu:30, a red disk-status will not appear on  the  Xymon  webpages
              until it has been red for at least 10 minutes.  Note: Since most tests only execute
              once every 5 minutes, it will usually not make sense to set N  to  anything  but  a
              multiple  of 5. The exception is network tests, since xymonnet-again.sh(1) will re-
              run failed network tests once a minute for up to 30 minutes.

       delayyellow=STATUSCOLUMN:DELAY[,STATUSCOLUMN:DELAY...]
              Same as delayred, but defers the change to a yellow status.

XYMONGEN DISPLAY OPTIONS

       These tags are processed by the xymongen(1) tool when generating  the  Xymon  webpages  or
       reports.

       page NAME [Page-title]
              This  defines  a  page  at  the level below the entry page. All hosts following the
              "page" directive appear on this page, until a new "page", "subpage" or  "subparent"
              line is found.

       subpage NAME [Page-title]
              This  defines a sub-page in the second level below the entry page.  You must have a
              previous "page" line to hook this sub-page to.

       subparent parentpage newpage [Page-title]
              This is used to define sub-pages in whatever levels you may  wish.  Just  like  the
              standard  "subpage"  tag,  "subparent"  defines  a new Xymon web page; however with
              "subparent" you explicitly list which page it should go as a sub-page to.  You  can
              pick  any  page  as the parent - pages, sub-pages or even other subparent pages. So
              this allows you to define any tree structure of pages that you like.

              E.g. with this in hosts.cfg:

                 page USA United States
                 subpage NY New York
                 subparent NY manhattan Manhattan data centers
                 subparent manhattan wallstreet Wall Street center

              you get this hierarchy of pages:

                 USA (United States)
                   NY (New York)
                     manhattan (Manhattan data centers)
                        wallstreet (Wall Street center)

              Note: The parent page must be defined before you define the subparent. If not,  the
              page will not be generated, and you get a message in the log file.

              Note: xymongen is case-sensitive, when trying to match the name of the parent page.

              The  inspiration  for this came from Craig Cook's mkbb.pl script, and I am grateful
              to Craig for suggesting that I implement it in xymongen.  The  idea  to  explicitly
              list the parent page in the "subparent" tag was what made it easy to implement.

       vpage

       vsubpage

       vsubparent
              These  are  page-definitions  similar  to  the  "page",  "subpage"  and "subparent"
              definitions. However, on these pages the rows are the tests, and  the  columns  are
              the hosts (normal pages have it the other way around). This is useful if you have a
              very large number of tests for a few hosts, and prefer to have  them  listed  on  a
              page that can be scrolled vertically.
              Note that the "group" directives have no effect on these types of pages.

       group [group-title]

       group-compress [group-title]
              Defines  a  group  of  hosts,  that  appear together on the web page, with a single
              header-line listing all of the columns. Hosts following  the  "group"  line  appear
              inside  the  group,  until  a  new  "group"  or  page-line is found. The two group-
              directives are handled identically by  Xymon  and  xymongen,  but  both  forms  are
              allowed for backwards compatibility.

       group-sorted [group-title]
              Same  as  the "group" line, but will sort the hosts inside the group so they appear
              in strict lexicographic order.

       group-only COLUMN1|COLUMN2|COLUMN3 [group-title]
              Same as the "group" and "group-compress"  lines,  but  includes  only  the  columns
              explicitly  listed  in  the group. Any columns not listed will be ignored for these
              hosts.

       group-except COLUMN1|COLUMN2|COLUMN3 [group-title]
              Same as the "group-only" lines, but includes all columns  EXCEPT  those  explicitly
              listed in the group. Any columns listed will be ignored for these hosts - all other
              columns are shown.

       title Page, group or host title text
              The "title" tag is used  to  put  custom  headings  into  the  pages  generated  by
              xymongen, in front of page/subpage links, groups or hosts.

              The  title  tag operates on the next item in the hosts.cfg file following the title
              tag.

              If a title tag precedes a host entry, the title is shown just before  the  host  is
              listed  on  the  status  page.  The  column  headings  present for the host will be
              repeated just after the heading.

              If a title tag precedes a group entry, the title is show just before the  group  on
              the status page.

              If a title tag precedes a page/subpage/subparent entry, the title text replaces the
              normal "Pages hosted locally" heading normally inserted by Xymon. This  appears  on
              the  page  that links to the sub-pages, not on the sub-page itself. To get a custom
              heading on the sub-page, you may want to use the "--pagetext-heading" when  running
              xymongen(1)

       NAME:hostname
              Overrides  the  default  hostname  used  on  the overview web pages.  If "hostname"
              contains spaces, it must be  enclosed  in  double  quotes,  e.g.  NAME:"R&D  Oracle
              Server"

       CLIENT:hostname
              Defines  an  alias for a host, which will be used when identifying status messages.
              This is typically used to accommodate a local client that sends in  status  reports
              with  a  different  hostname,  e.g. if you use hostnames with domains in your Xymon
              configuration, but the client is a silly Window  box  that  does  not  include  the
              hostname.  Or  vice-versa.  Whatever  the  reason, this can be used to match status
              reports with the hosts you define in your hosts.cfg file. It causes incoming status
              reports  with  the  specified  hostname  to  be filed using the hostname defined in
              hosts.cfg.

       NOCOLUMNS:column[,column]
              Used to drop certain of the status columns generated by the Xymon client. column is
              one  of  cpu,  disk,  files,  memory, msgs, ports, procs.  This setting stops these
              columns from being updated for the host. Note: If the columns  already  exist,  you
              must use the xymon(1) utility to drop them, or they will go purple.

       COMMENT:Host comment
              Adds  a small text after the hostname on the web page. This can be used to describe
              the host, without completely changing its display-name as the NAME:  tag  does.  If
              the comment includes whitespace, it must be in double-quotes, e.g. COMMENT:"Sun web
              server"

       DESCR:Hosttype:Description
              Define some informational text about the host. The "Hosttype" is a text  describing
              the   type   of  this  device  -  "router",  "switch",  "hub",  "server"  etc.  The
              "Description" is an informational text that will be  shown  on  the  "Info"  column
              page; this can e.g. be used to store information about the physical location of the
              device, contact persons etc. If the text contain whitespace, you must enclose it in
              double-quotes, e.g.  DESCR:"switch:4th floor Marketing switch"

       CLASS:Classname
              Force the host to belong to a specific class. Class-names are used when configuring
              log-file monitoring  (they  can  be  used  as  references  in  client-local.cfg(5),
              analysis.cfg(5)  and  alerts.cfg(5)  to group log file checks or alerts). Normally,
              class-names are controlled on the client by starting  the  Xymon  client  with  the
              "--class=Classname"  option.   If you specify it in the hosts.cfg file on the Xymon
              server, it overrides any class name that the client reports. If not set,  then  the
              host  belongs  to a class named by the operating system the Xymon client is running
              on.

       dialup The keyword "dialup" for a host means that it is OK for it to be  off-line  -  this
              should  not  trigger  an alert. All network tests will go "clear" upon failure, and
              any missing reports from e.g.  cpu- and disk-status will not go  purple  when  they
              are not updated.

       nonongreen
              Ignore  this  host  on the "All non-green" page. Even if it has an active alert, it
              will not be included in the "All non-green" page. This also removes the  host  from
              the event-log display.

       nodisp Ignore  this host completely when generating the Xymon webpages.  Can be useful for
              monitoring a host without having it show up on the webpages, e.g. because it is not
              yet in production use. Or for hiding a host that is shown only on a second pageset.

       TRENDS:[*,][![graph,...]]
              Defines  the  RRD  graphs  to include in the "trends" column generated by xymongen.
              This option syntax is complex.
              If this option is not present, xymongen provides graphs matching the  standard  set
              of  RRD files: la, disk, memory, users, vmstat, iostat, netstat, tcp, bind, apache,
              sendmail
              * If this option is specified, the list of graphs to include  start  out  as  being
              empty (no graphs).
              * To include all default graphs, use an asterisk.  E.g. "TRENDS:*"
              * To exclude a certain graph, specify it prefixed with '!'. E.g.  to see all graphs
              except users: "TRENDS:*,!users"
              * The netstat, vmstat and tcp graphs have many "subgraphs".   Which  of  these  are
              shown           can           be           specified           like           this:
              "TRENDS:*,netstat:netstat2|netstat3,tcp:http|smtp|conn" This will show all  graphs,
              but  instead  of  the  normal  netstat  graph,  there will be two: The netstat2 and
              netstat3 graphs. Instead of the combined tcp graphs  showing  all  services,  there
              will be three: One for each of the http, conn and smtp services.

       COMPACT:COLUMN=COLUMN1|COLUMN2|COLUMN3[,ditto]
              Collapses a series of statuses into a single column on the overview web page.

       INTERFACES:REGEXP
              On  systems  with  multiple  network  interfaces, the operating system may report a
              number of network interface where the statistics are of  no  interest.  By  default
              Xymon  tracks and graphs the traffic on all network interfaces. This option defines
              a regular expression, and only those interfaces whose name matches  the  expression
              are tracked.

XYMON TAGS FOR THE CRITICAL SYSTEMS OVERVIEW PAGE

       NOTE:  The  "NK" set of tags is deprecated. They will be supported for Xymon 4.x, but will
       be dropped in version 5.  It is recommended that you move your critical  systems  view  to
       the    criticalview.cgi(1)    viewer,   which   has   a   separate   configuration   tool,
       criticaleditor.cgi(1) with more facilities than the NK tags in hosts.cfg.

       xymongen will create three sets of pages: The main  page  xymon.html,  the  all-non-green-
       statuses  page (nongreen.html), and a specially reduced version of nongreen.html with only
       selected tests (critical.html).  This page includes selected tests that currently  have  a
       red or yellow status.

       NK:testname[,testname]
              NOTE:  This  has been deprecated, you should use criticalview.cgi(1) instead of the
              NK tag.

              Define the tests that you want included on the critical page.  E.g. if you  have  a
              host where you only want to see the http tests on critical.html, you specify it as

                12.34.56.78  www.acme.com  # http://www.acme.com/ NK:http

              If you want multiple tests for a host to show up on the critical.html page, specify
              all the tests separated by commas.  The test names correspond to the  column  names
              (e.g.  https tests are covered by an "NK:http" tag).

       NKTIME=day:starttime:endtime[,day:starttime:endtime]
              This tag limits the time when an active alert is presented on the NK web page.

              By  default, tests with a red or yellow status that are listed in the "NK:testname"
              tag will appear on the NK page. However, you may not want  the  test  to  be  shown
              outside  of  normal working hours - if, for example, the host is not being serviced
              during week-ends.

              You can then use the NKTIME tag to define the time periods  where  the  alert  will
              show up on the NK page.

              The time specification consists of

              day-of-week:  W  means  Mon-Fri  ("weekdays"), * means all days, 0 .. 6 = Sunday ..
              Saturday.  Listing multiple days is possible, e.g. "60" is valid meaning  "Saturday
              and Sunday".

              starttime:  Time  to  start showing errors, must be in 24-hour clock format as HHMM
              hours/minutes.  E.g. for 8 am enter "0800", for 9.30 pm enter "2130"

              endtime: Time to stop showing errors.

              If necessary, multiple periods can be specified.  E.g.  to  monitor  a  site  24x7,
              except between noon and 1 pm, use NKTIME=*:0000:1159,*:1300:2359

              The  interval  between start time and end time may cross midnight, e.g. *:2330:0200
              would be valid and have the same effect as *:2330:2400,*:0000:0200.

XYMON TAGS FOR THE WML (WAP) CARDS

       If xymongen is run with the "--wml" option, it will generate a set  of  WAP-format  output
       "cards" that can be viewed with a WAP-capable device, e.g. a PDA or cell-phone.

       WML:[+|-]testname[,[+|-]testname]
              This  tag determines which tests for this hosts are included in the WML (WAP) page.
              Syntax is identical to the NK: tag.

              The default set of WML tests are taken from the --wml command line option.   If  no
              "WML:" tag is specified, the "NK:" tag is used if present.

XYMON STATUS PROPAGATION OPTIONS

       These  tags  affect  how  a  status  propagates upwards from a single test to the page and
       higher.  This  can  also  be  done  with  the  command-line  options  --nopropyellow   and
       --nopropred,  but the tags apply to individual hosts, whereas the command line options are
       global.

       NOPROPRED:[+|-]testname[,[+|-]testname]
              This tag is used to inhibit a yellow or red status from propagating upwards -  i.e.
              from  a  test  status  color  to  the  (sub)page  status  color,  and further on to
              xymon.html or nongreen.html

              If a host-specific tag begins with a '-' or  a  '+',  the  host-specific  tags  are
              removed/added  to  the  default  setting from the command-line option. If the host-
              specific tag does not begin with a '+' or a '-', the default setting is ignored for
              this host and the NOPROPRED applies to the tests given with this tag.

              E.g.:  xymongen  runs  with "--nopropred=ftp,smtp".  "NOPROPRED:+dns,-smtp" gives a
              NOPROPRED setting of "ftp,dns" (dns is added to  the  default,  smtp  is  removed).
              "NOPROPRED:dns" gives a setting of "dns" only (the default is ignored).

              Note: If you set use the "--nopropred=*" command line option to disable propagation
              of all alerts, you cannot use the "+" and "-" methods to add  or  remove  from  the
              wildcard  setting. In that case, do not use the "+" or "-" setting, but simply list
              the required tests that you want to keep from propagating.

       NOPROPYELLOW:[+|-]testname[,[+|-]testname]
              Similar to NOPROPRED: tag, but applies to propagating a yellow status upwards.

       NOPROPPURPLE:[+|-]testname[,[+|-]testname]
              Similar to NOPROPRED: tag, but applies to propagating a purple status upwards.

       NOPROPACK:[+|-]testname[,[+|-]testname]
              Similar to NOPROPRED: tag,  but  applies  to  propagating  an  acknowledged  status
              upwards.

XYMON AVAILABILITY REPORT OPTIONS

       These   options  affect  the  way  the  Xymon  availability  reports  are  processed  (see
       report.cgi(1) for details about availability reports).

       REPORTTIME=day:starttime:endtime[,day:starttime:endtime]
              This tag defines the time interval where  you  measure  uptime  of  a  service  for
              reporting purposes.

              When  xymongen  generates  a report, it computes the availability of each service -
              i.e. the percentage of time that the service is reported as available (meaning: not
              red).

              By  default,  this calculation is done on a 24x7 basis, so no matter when an outage
              occurs, it counts as downtime.

              The REPORTTIME tag allows you to specify a period of time other than 24x7  for  the
              service  availability  calculation.   If  you have systems where you only guarantee
              availability from e.g. 7 AM to 8 PM on weekdays, you can use
                REPORTTIME=W:0700:2000
              and the availability calculation will  only  be  performed  for  the  service  with
              measurements from this time interval.

              The syntax for REPORTTIME is the same as the one used by the NKTIME parameter.

              When REPORTTIME is specified, the availability calculation happens like this:

              * Only measurements done during the given time period is used for the calculation.
              * "blue" time reduces the length of the report interval, so if you are generating a
              report for a 10-hour period and there are 20  minutes  of  "blue"  time,  then  the
              availability  calculation  will consider the reporting period to be 580 minutes (10
              hours minus 20 minutes).  This allows you to have  scheduled  downtime  during  the
              REPORTTIME  interval  without  hurting  your  availability; this is (I believe) the
              whole idea of the downtime being "planned".
              * "red" and "clear" status counts  as  downtime;  "yellow"  and  "green"  count  as
              uptime. "purple" time is ignored.

              The  availability  calculation correctly handles status changes that cross into/out
              of a REPORTTIME interval.

              If no REPORTTIME is given, the standard 24x7 calculation is used.

       WARNPCT:percentage
              Xymon's reporting facility uses a computed availability threshold to color services
              green (100% available), yellow (above threshold, but less than 100%), or red (below
              threshold) in the reports.

              This option allows you to set the threshold value on a host-by-host basis,  instead
              of using a global setting for all hosts. The threshold is defined as the percentage
              of the time that the host must be available, e.g. "WARNPCT:98.5" if  you  want  the
              threshold to be at 98.5%

       noflap[=test1,test2,...]
              Disable  flap  detection  for  this  host, or for specific tests on this host. Flap
              detection is globally controlled by options given to xymond on  the  command  line,
              but, if enabled, it can be disabled using this option.

NETWORK TEST SETTINGS

       testip By  default, Xymon will perform a name lookup of the hostname to get the IP address
              it will use for network tests. This tag causes Xymon to use the IP  listed  in  the
              hosts.cfg file.

       NET:location
              This  tag  defines  the host as being tested from a specific location.  If xymonnet
              sees that the environment variable XYMONNETWORK is set, it will only test the hosts
              that  have  a  matching  "NET:location"  tag  in the hosts.cfg file. So this tag is
              useful if you have more than one system running network tests, but you  still  want
              to keep a consolidated hosts.cfg file for all your systems.

              Note: The "--test-untagged" option modifies this behaviour, see xymonnet(1)

       noclear
              Some  network  tests  depend  on others. E.g. if the host does not respond to ping,
              then there's a good chance that the entire host is down and all network tests  will
              fail. Or if the http server is down, then any web content checks are also likely to
              fail.  To avoid floods of alerts, the default behaviour is for xymonnet  to  change
              the  status  of these tests that fail because of another problem to "clear" instead
              of "red". The "noclear" tag disables this behaviour and causes all failing tests to
              be reported with their true color.

              This  behaviour can also be implemented on a per-test basis by putting the "~" flag
              on any network test.

              Note that "noclear" also affects whether stale status messages from e.g.  a  client
              on the host go purple or clear when the host is down; see the "noclear" description
              in the "GENERAL PER-HOST OPTIONS" section above.

       nosslcert
              Disables the standard check of any SSL certificates for this host. By  default,  if
              an  SSL-enabled  service  is  tested,  a  second  test  result  is  generated  with
              information about the SSL certificate -  this  tag  disables  the  SSL  certificate
              checks for the host.

       ssldays=WARNDAYS:ALARMDAYS
              Define  the  number of days before an SSL certificate expires, in which the sslcert
              status shows a warning (yellow) or alarm (red) status. These default to the  values
              from  the "--sslwarn" and "--sslalarm" options for the xymonnet(1) tool; the values
              specified in the "ssldays" tag overrides the default.

       sslbits=MINIMUMKEYBITS
              Enable checking of the encryption strength of  the  SSL  protocol  offered  by  the
              server.  If the server offers encryption using a key with fewer than MINIMUMKEYBITS
              bits, the "sslcert" test will go red. E.g. to check  that  your  server  only  uses
              strong encryption (128 bits or better), use "sslbits=128".

       sni

       nosni  Enables or disables use of SNI (Server Name Indication) for SSL tests.

              Some  SSL  implementations  cannot handle SSL handshakes with SNI data, so Xymon by
              default does not use SNI. This default can be changed with the "--sni"  option  for
              xymonnet(1) but can also be managed per host with these tags.

              SNI  support  was added in Xymon 4.3.13, where the default was to use SNI. This was
              changed in 4.3.14 so SNI support is disabled by default, and the "sni" and  "nosni"
              tags were introduced together with the "--sni" option for xymonnet.

       DOWNTIME=day:starttime:endtime[,day:starttime:endtime]

       DOWNTIME=columns:day:starttime:endtime:cause[,columns:day:starttime:endtime:cause]
              This  tag  can  be  used to ignore failed checks during specific times of the day -
              e.g. if you run services that are only  monitored  e.g.  Mon-Fri  8am-5pm,  or  you
              always reboot a server every Monday between 5 and 6 pm.

              What happens is that if a test fails during the specified time, it is reported with
              status BLUE instead of red, yellow, or purple. Thus you  can  still  see  when  the
              service  was  unavailable, but alarms will not be triggered and the downtime is not
              counted in the availability calculations generated by the Xymon reports.

              The "columns" and "cause" settings are  optional,  but  both  or  neither  must  be
              specified.  "columns"  may  be  a  comma-separated  list of status columns to which
              DOWNTIME will apply.  The "cause" string will be displayed on the status  web  page
              to explain why the system is down.

              The syntax for DOWNTIME is the same as the one used by the NKTIME parameter.

       SLA=day:starttime:endtime[,day:starttime:endtime]
              This tag is now deprecated. Use the DOWNTIME tag instead.

              This tag works the opposite of the DOWNTIME tag - you use it to specify the periods
              of the day that the service should be green. Failures OUTSIDE the SLA interval  are
              reported as blue.

       depends=(testA:host1/test1,host2/test2),(testB:host3/test3),[...]
              This  tag  allows  you  to  define  dependencies between tests.  If "testA" for the
              current host depends on "test1" for host "host1" and test "test2" for "host2", this
              can be defined with

                 depends=(testA:host1/test1,host2/test2)

              When  deciding  the  color  to  report  for  testA, if either host1/test1 failed or
              host2/test2 failed, if testA has failed also  then  the  color  of  testA  will  be
              "clear" instead of red or yellow.

              Since all tests are actually run before the dependencies are evaluated, you can use
              any host/test in the dependency - regardless of the actual sequence that the  hosts
              are listed, or the tests run. It is also valid to use tests from the same host that
              the dependency is for. E.g.

                 1.2.3.4  foo # http://foo/ webmin depends=(webmin:foo/http)

              is valid; if both the http and the webmin tests fail, then webmin will be  reported
              as clear.

              Note:  The  "depends" tag is evaluated by xymonnet while running the network tests.
              It can therefore only refer to other network tests that are  handled  by  the  same
              server  - there is currently no way to use the e.g. the status of locally run tests
              (disk, cpu, msgs) or network tests from other servers in a  dependency  definition.
              Such dependencies are silently ignored.

       badTEST[-weekdays-starttime-endtime]:x:y:z
              NOTE: This has been deprecated, use the delayred and delayyellow settings instead.

              Normally  when a network test fails, the status changes to red immediately.  With a
              "badTEST:x:y:z" tag this behaviour changes:
              * While "z" or more successive tests fail, the column goes RED.
              * While "y" or more successive tests fail, but fewer  than  "z",  the  column  goes
              YELLOW.
              *  While  "x"  or  more  successive tests fail, but fewer than "y", the column goes
              CLEAR.
              * While fewer than "x" successive tests fail, the column stays GREEN.

              The optional time specification can be used to limit this "badTEST"  setting  to  a
              particular  time of day, e.g. to require a longer period of downtime before raising
              an alarm during out-of-office hours. The time-specification uses:
              * Weekdays: The weekdays this badTEST  tag  applies,  from  0  (Sunday)  through  6
              (Saturday).  Putting "W" here counts as "12345", i.e. all working days. Putting "*"
              here counts as all days of the week, equivalent to "0123456".
              *  start  time  and  end  time   are   specified   using   24-hour   clocks,   e.g.
              "badTEST-W-0900-2000"  is  valid  for  working  days  between 9 AM (09:00) and 8 PM
              (20:00).

              When using multiple badTEST tags, the LAST one specified with a matching  time-spec
              is used.

              Note: The "TEST" is replaced by the name of the test, e.g.

               12.34.56.78  www.foo.com  # http://www.foo.com/ badhttp:1:2:4

              defines  a  http test that goes "clear" after the first failure, "yellow" after two
              successive failures, and "red" after four successive failures.

              For LDAP tests using URL's, use the option "badldapurl".   For  the  other  network
              tests, use "badftp", "badssh" etc.

CONNECTIVITY (PING) TEST

       These tags affect the behaviour of the xymonnet connectivity test.

       noping Disables  the  ping-test, but will keep the "conn" column on the web display with a
              notice that it has been disabled.

       noconn Disables the ping-test, and does not put a "conn" column on the web display.

       conn   The "conn" test (which does a ping of  the  host)  is  enabled  for  all  hosts  by
              default,  and  normally  you  just  want  to disable it using "noconn" or "noping".
              However, on the rare occasion where you may want to check that a host  is  NOT  up,
              you  can  specify  it  as an explicit test, and use the normal test modifiers, e.g.
              "!conn" will be green when the host is NOT up, and red if it  does  appear  on  the
              network.

              The  actual  name of the tag - "conn" by default - depends on the "--ping=TESTNAME"
              option for xymonnet, as that decides the testname for the connectivity test.

       conn={best,|worst,}IP1[,IP2...]
              This adds additional IP-addresses that are pinged during the normal "conn" test. So
              the  normal  "conn"  test  must  be  enabled  (the default) before this tag has any
              effect. The IP-addresses listed here are pinged in addition to the main IP-address.

              When multiple IP's are pinged, you can choose if ALL IP's must respond (the "worst"
              method),  or AT LEAST one IP must respond (the "best" setting). All of the IP's are
              reported in a single "conn" status, whose color is determined from  the  result  of
              pinging  the IP's and the best/worst setting.  The default method is "best" - so it
              will report green if just one of the IP's respond to ping.

       badconn[-weekdays-starttime-endtime]:x:y:z
              This is taken directly from the "fping.sh" connectivity-  testing  script,  and  is
              used  by  xymonnet  when  it  runs with ping testing enabled (the default). See the
              description of the "badTEST" tag.

       route:router1,router2,....
              This tag is taken from the "fping.sh" script, and is used by xymonnet when run with
              the "--ping" option to enable ping testing.

              The  router1,router2,...  is  a  comma-separated  list  of  hosts  elsewhere in the
              hosts.cfg file. You cannot have any spaces  in  the  list  -  separate  hosts  with
              commas.

              This  tag  changes the color reported for a ping check that fails, when one or more
              of the hosts in the "route" list is also down. A "red" status  becomes  "yellow"  -
              other  colors  are unchanged. The status message will include information about the
              hosts in the router-list that are down, to aid tracking down which  router  is  the
              root cause of the problem.

              Note:  Internally,  the  ping test will still be handled as "failed", and therefore
              any other tests run for this host will report a status of "clear".

       route_LOCATION:router1,router2,...
              If the XYMONNETWORK environment variable is defined, a tag of "route_XYMONNETWORK:"
              is  recognized  by  xymonnet  with  the same effect as the normal "route:" tag (see
              above).  This allows you to have different route:  tags  for  each  server  running
              xymonnet.  The  actual  text for the tag then must match the value you have for the
              XYMONNETWORK setting.  E.g. with XYMONNETWORK=dmz, the tag becomes "route_dmz:"

       trace  If the connectivity test fails, run a "traceroute" and include the output from this
              in  the  status  message from the failed connectivity test. Note: For this to work,
              you may have to define the TRACEROUTE environment variable, see xymonserver.cfg(5)

       notrace
              Similar to the "trace" option, this disables the running of a  traceroute  for  the
              host  after  a  failed  connectivity test. It is only used if running traceroute is
              made the default via the --trace option.

SIMPLE NETWORK TESTS

       These tests perform a simple network test of a service  by  connecting  to  the  port  and
       possibly checking that a banner is shown by the server.

       How  these  tests operate are configured in the protocols.cfg(5) configuration file, which
       controls which port to use for the service, whether to  send  any  data  to  the  service,
       whether to check for a response from the service etc.

       You  can  modify  the  behaviour  of these tests on a per-test basis by adding one or more
       modifiers to the test: :NUMBER changes the port number from the default  to  the  one  you
       specify  for  this  test.   E.g.  to  test  ssh  running on port 8022, specify the test as
       ssh:8022.

       :s makes the test silent, i.e. it does not send any data to the  service.  E.g.  to  do  a
       silent test of an smtp server, enter smtp:s.

       You can combine these two: ftp:8021:s is valid.

       If  you  must  test  a  service  from a multi-homed host (i.e. using a specific source IP-
       address instead of the one your operating system  provides),  you  can  use  the  modifier
       "@IPADDRESS"  at  the  end  of  the  test specification, after any other modifiers or port
       number.  "IPADDRESS" must be a valid dotted IP-address (not hostname) which is assigned to
       the host running the network tests.

       The name of the test also determines the column name that the test result will appear with
       in the Xymon webpages.

       By prefixing a test with "!" it becomes a reverse test: Xymon will expect the service  NOT
       to  be  available,  and send a green status if it does NOT respond. If a connection to the
       service succeeds, the status will go red.

       By prefixing a test with "?" errors will be reported with a "clear" status instead of red.
       This  is known as a test for a "dialup" service, and allows you to run tests of hosts that
       are not always online, without getting alarms while they are off-line.

       ftp ssh telnet smtp pop3 imap nntp rsync clamd oratns qmtp qmqp
              These tags are for testing services offering the FTP,  Secure  Shell  (ssh),  SMTP,
              POP3,  IMAP,  NNTP,  rsync,  CLAM  anti-virus  daemon  (clamd), Oracle TNS listener
              (oratns), qmail QMTP and QMQP protocols.

       ftps telnets smtps pop3s imaps nntps
              These tags are for testing of  the  SSL-tunneled  versions  of  the  standard  ftp,
              telnet,  smtp, pop3, imap and nntp protocols.  If Xymon was configured with support
              for SSL, you can test these services like any other network service - xymonnet will
              setup  an  SSL-encrypted session while testing the service.  The server certificate
              is validated and information about it sent in the "sslcert" column. Note that smtps
              does  not  have  a  standard port number assignment, so you will need to enter this
              into the protocols.cfg file or your /etc/services file.

       bbd    Test that a Big Brother compatible daemon is running. This check works both for the
              Xymon xymond(8) daemon, and the original Big Brother bbd daemon.

DNS SERVER TESTS

       These tags are used to setup monitoring of DNS servers.

       dns    Simple DNS test. It will attempt to lookup the A record for the hostname of the DNS
              server.

       dig    This is an alias for the "dns" test. In xymonnet, the "dns"  and  "dig"  tests  are
              handled  identically,  so all of the facilities for testing described for the "dns"
              test are also available for the "dig" test.

       dns=hostname

       dns=TYPE:lookup[,TYPE:lookup...]
              The default DNS tests will attempt a DNS lookup of the DNS' servers  own  hostname.
              You can specify the hostname to lookup on a DNS server by listing it on each test.

              The  second  form  of  the  test  allows you to perform multiple queries of the DNS
              server, requesting different types of DNS records. The TYPE defines the type of DNS
              data:  A  (IP-address),  MX  (Mail  eXchanger),  PTR  (reverse), CNAME (alias), SOA
              (Start-Of-Authority), NS (Name Server) are among the more  common  ones  used.  The
              "lookup"  is the query. E.g. to lookup the MX records for the "foo.com" domain, you
              would use "dns=mx:foo.com". Or to lookup the nameservers for the "bar.org"  domain,
              "dns=ns:bar.org".  You can list multiple lookups, separated by commas. For the test
              to end up with a green status, all lookups must succeed.

OTHER NETWORK TESTS

       ntp    Check for a running NTP (Network Time Protocol) server on this host. This test uses
              the "ntpdate" utility to check for a NTP server - you should either have ntpdate in
              your   PATH,   or   set    the    location    of    the    ntpdate    program    in
              $XYMONHOME/etc/xymonserver.cfg

       rpc[=rpcservice1,rpcservice2,...]
              Check  for  one  or  more available RPC services. This check is indirect in that it
              only queries the RPC Portmapper on the host, not the actual service.

              If only "rpc" is given, the test only verifies that the port mapper is available on
              the  remote host. If you want to check that one or more RPC services are registered
              with the port mapper, list the names of the desired RPC services after the  equals-
              sign. E.g. for a working NFS server the "mount", "nlockmgr" and "nfs" services must
              be available; this can be checked with "rpc=mount,nlockmgr,nfs".

              This test uses the rpcinfo tool for the actual test; if this tool is not  available
              in  the PATH of xymonnet, you must define the RPCINFO environment variable to point
              at this tool. See xymonserver.cfg(5)

HTTP TESTS

       Simple testing of a http URL is done simply by putting the URL into  the  hosts.cfg  file.
       Note that this only applies to URL's that begin with "http:" or "https:".

       The following items describe more advanced forms of http URL's.

       Basic Authentication with username/password
              If  the  URL  requires authentication in the form of a username and password, it is
              most likely using the HTTP "Basic" authentication. xymonnet support this,  and  you
              can provide the username and password either by embedding them in the URL e.g.
                  http://USERNAME:PASSWORD@www.sample.com/
              or  by  putting  the  username  and password into the ~/.netrc file (see ftp(1) for
              details).

       Authentication with SSL client certificates
              An SSL client certificate can be used for authentication.  To use this, the  client
              certificate  must  be  stored  in  a  PEM-formatted  file  together with the client
              certificate key, in the $XYMONHOME/certs/ directory. The URL is then given as
                  http://CERT:FILENAME@www.sample.com/
              The "CERT:" part is literal - i.e. you write C-E-R-T-colon and then the filename of
              the PEM-formatted certificate.
              A  PEM-formatted  certificate file can be generated based on certificates stored in
              Microsoft Internet Explorer and OpenSSL. Do as follows:
              From the MSIE Tools-Options menu, pick the  Content  tab,  click  on  Certificates,
              choose  the  Personal  tab,  select the certificate and click Export. Make sure you
              export the private key also. In the Export File  Format,  choose  PKCS  12  (.PFX),
              check  the  "Include  all  certificates"  checkbox  and  uncheck the "Enable strong
              protection".  Provide a temporary password for the  exported  file,  and  select  a
              filename for the PFX-file.
              Now  run "openssl pkcs12 -in file.pfx -out file.pem". When prompted for the "Import
              Password", provide the temporary password you gave when exporting the  certificate.
              Then provide a "PEM pass phrase" (twice) when prompted for one.
              The file.pem file is the one you should use in the FILENAME field in the URL - this
              file must be kept in $XYMONHOME/certs/.  The PEM pass phrase must  be  put  into  a
              file  named  the  same as the certificate, but with extension ".pass". E.g.  if you
              have the PEM certificate in $XYMONHOME/certs/client.pem,  you  must  put  the  pass
              phrase  into  the $XYMONHOME/certs/client.pass file. Make sure to protect this file
              with Unix permissions, so that only the user running Xymon can read it.

       Forcing an HTTP or SSL version
              Some SSL sites will only allow you to connect, if you use  specific  "dialects"  of
              HTTP or SSL. Normally this is auto-negotiated, but experience shows that this fails
              on some systems.

              xymonnet can be told to use specific dialects,  by  adding  one  or  more  "dialect
              names" to the URL scheme, i.e. the "http" or "https" in the URL:

              * "2",  e.g. https2://www.sample.com/ : use only SSLv2
              * "3",  e.g. https3://www.sample.com/ : use only SSLv3
              * "t",  e.g. httpst://www.sample.com/ : use only TLSv1.0
              * "a",  e.g. httpsa://www.sample.com/ : use only TLSv1.0
              * "b",  e.g. httpsb://www.sample.com/ : use only TLSv1.1
              * "c",  e.g. httpsc://www.sample.com/ : use only TLSv1.2
              * "m",  e.g. httpsm://www.sample.com/ : use only 128-bit ciphers
              * "h",  e.g. httpsh://www.sample.com/ : use only >128-bit ciphers
              * "10", e.g. http10://www.sample.com/ : use HTTP 1.0
              * "11", e.g. http11://www.sample.com/ : use HTTP 1.1

              These  can  be  combined where it makes sense, e.g to force TLS1.2 and HTTP 1.0 you
              would use "httpsc10".

              Note that SSLv2 support is disabled in all current OpenSSL releases.  TLS  version-
              specific scheme testing requires OpenSSL 1.0.1 or higher.

       Testing sites by IP-address
              xymonnet  ignores  the  "testip"  tag  normally used to force a test to use the IP-
              address from the hosts.cfg file instead of the hostname, when it performs http  and
              https tests.

              The  reason  for  this is that it interacts badly with virtual hosts, especially if
              these are IP-based as is common with https-websites.

              Instead the IP-address to connect to can be overridden by specifying it as:

                   http://www.sample.com=1.2.3.4/index.html

              The "=1.2.3.4" will case xymonnet to run the test against the IP-address "1.2.3.4",
              but still trying to access a virtual website with the name "www.sample.com".

              The  "=ip.address.of.host" must be the last part of the hostname, so if you need to
              combine this with e.g. an explicit port number, it should be done as

                   http://www.sample.com:3128=1.2.3.4/index.html

       HTTP Testing via proxy
              NOTE: This is not enabled by default. You must add the  "--bb-proxy-syntax"  option
              when running xymonnet(1) if you want to use this.

              xymonnet  supports  the Big Brother syntax for specifying an HTTP proxy to use when
              performing http tests. This syntax just joins the proxy- and  the  target-URL  into
              one, e.g.
                  http://webproxy.sample.com:3128/http://www.foo.com/
              would  be  the  syntax for testing the www.foo.com website via the proxy running on
              "webproxy.sample.com" port 3128.

              If the proxy port number is not specified, the default HTTP  port  number  (80)  is
              used.

              If  your  proxy  requires authentication, you can specify the username and password
              inside the proxy-part of the URL, e.g.
                  http://fred:Wilma1@webproxy.sample.com:3128/http://www.foo.com/
              will authenticate to the proxy using  a  username  of  "fred"  and  a  password  of
              "Wilma1", before requesting the proxy to fetch the www.foo.com homepage.

              Note that it is not possible to test https-sites via a proxy, nor is it possible to
              use https for connecting to the proxy itself.

       cont[=COLUMN];URL;[expected_data_regexp|#digesttype:digest]
              This tag is used to specify a http/https check,  where  it  is  also  checked  that
              specific content is present in the server response.

              If  the  URL  itself  includes a semi-colon, this must be escaped as '%3B' to avoid
              confusion over which semicolon is part of the URL, and which semicolon  acts  as  a
              delimiter.

              The  data  that  must  be  returned can be specified either as a regular expression
              (except that <space> is not allowed) or as a message digest (typically using an MD5
              sum or SHA-1 hash).

              The  regex  is  pre-processed for backslash "\" escape sequences. So you can really
              put any character in this string by escaping it first:
                 \n     Newline (LF, ASCII 10 decimal)
                 \r     Carriage return (CR, ASCII 13 decimal)
                 \t     TAB (ASCII 8 decimal)
                 \\    Backslash (ASCII 92 decimal)
                 \XX    The character with ASCII hex-value XX

              If you must have whitespace in the regex, use the [[:space:]] syntax, e.g.  if  you
              want to test for the string "All is OK", use "All[[:space:]]is[[:space:]]OK".  Note
              that this may depend on your particular implementation of the regex functions found
              in your C library. Thanks to Charles Goyard for this tip.

              Note: If you are migrating from the "cont2.sh" script, you must change the '_' used
              as wildcards  by  cont2.sh  into  '.'  which  is  the  regular-expression  wildcard
              character.

              Message  digests  can  use whatever digest algorithms your libcrypto implementation
              (usually OpenSSL) supports.  Common message digests are "md5", "sha1", "sha256"  or
              "sha512".   The  digest  is calculated on the data portion of the response from the
              server, i.e. HTTP headers are not included in the digest (as they change  from  one
              request to the next).

              The expected digest value can be computed with the xymondigest(1) utility.

              "cont"  tags  in hosts.cfg result in two status reports: One status with the "http"
              check, and another with the "content" check.

              As with normal URL's, the extended syntax described above can  be  used  e.g.  when
              testing SSL sites that require the use of SSLv2 or strong ciphers.

              The  column name for the result of the content check is by default called "content"
              - you can change the default with the  "--content=NAME"  option  to  xymonnet.  See
              xymonnet(1) for a description of this option.

              If  more  than  one content check is present for a host, the first content check is
              reported in the column "content", the second is reported in the column  "content1",
              the third in "content2" etc.

              You can also specify the column name directly in the test specification, by writing
              it as "cont=COLUMN;http://...".  Column-names cannot include  whitespace  or  semi-
              colon.

              The  content-check  status by default includes the full URL that was requested, and
              the HTML data returned by the server.  You can hide the HTML  data  on  a  per-host
              (not per-test) basis by adding the HIDEHTTP tag to the host entry.

       content=URL
              This syntax is deprecated. You should use the "cont" tag instead, see above.

       post[=COLUMN];URL;form-data;[expected_data_regexp|#digesttype:digest]
              This  tag can be used to test web pages, that use an input form. Data can be posted
              to the form by specifying them in the  form-data  field,  and  the  result  can  be
              checked  as  if  it  was a normal content check (see above for a description of the
              cont-tag and the restrictions on how the URL must be written).

              The form-data field must be entered in "application/x-www-form-urlencoded"  format,
              which is the most commonly used format for web forms.

              E.g. if you have a web form defined like this:

                 <form action="/cgi-bin/form.cgi" method="post">
                   <p>Given name<input type="text" name="givenname"></p>
                   <p>Surname<input type="text" name="surname"></p>
                   <input type="submit" value="Send">
                 </form>

              and  you  want  to  post  the  value "John" to the first field and "Doe Jr." to the
              second field, then the form data field would be

                  givenname=John&surname=Doe+Jr.

              Note that any spaces in the input value is replaced with '+'.

              If your form-data  requires  a  different  content-type,  you  can  specify  it  by
              beginning  the  form-data  with (content-type=TYPE), e.g. "(content-type=text/xml)"
              followed by the POST data. Note that as with normal forms, the POST data should  be
              specified using escape-sequences for reserved characters: "space" should be entered
              as "\x20", double quote as "\x22", newline as "\n", carriage-return as "\r", TAB as
              "\t",  backslash as "\\".  Any byte value can be entered using "\xNN" with NN being
              the hexadecimal value, e.g. "\x20" is the space character.

              The [expected_data_regexp|#digesttype:digest] is the expected  data  returned  from
              the  server in response to the POST.  See the "cont;" tag above for details. If you
              are only interested in knowing if it is possible to submit the form (but don't care
              about the data), this can be an empty string - but the ';' at the end is required.

       nocont[=COLUMN];URL;forbidden_data_regexp
              This  tag  works just like "cont" tag, but reverses the test.  It is green when the
              "forbidden_data_regexp" is NOT found in the response, and red when it IS found.  So
              it can be used to watch for data that should NOT be present in the response, e.g. a
              server error message.

       nopost[=COLUMN];URL;form-data;expected_data_regexp
              This tag works just like "post" tag, but reverses the test.  It is green  when  the
              "forbidden_data_regexp"  is NOT found in the response, and red when it IS found. So
              it can be used to watch for data that should NOT be present in the response, e.g. a
              server error message.

       type[=COLUMN];URL;expected_content_type
              This  is  a variant of the content check - instead of checking the content data, it
              checks the type of the data as given by the HTTP  Content-Type:  header.  This  can
              used  to  check  if a URL returns e.g. a PDF file, regardless of what is inside the
              PDF file.

       soap[=COLUMN];URL;SOAPMESSAGE;[expected_data_regexp|#digesttype:digest]
              Send SOAP message over HTTP. This is identical to the "cont" test, except that  the
              request  sent  to  the server uses a Content-type of "application/soap+xml", and it
              also sends a "SOAPAction" header with the URL. SOAPMESSAGE is the SOAP message sent
              to the server. Since SOAP messages are usually XML documents, you can store this in
              a separate file by specifying "file:FILENAME" as the SOAPMESSAGE parameter.  E.g. a
              test specification of
                  soap=echo;http://soap.foo.bar/baz?wsdl;file:/home/foo/msg.xml;.   will read the
              SOAP  message  from  the  file  /home/foo/msg.xml  and   post   it   to   the   URL
              http://soap.foo.bar/bas?wsdl

              Note  that  SOAP  XML documents usually must begin with the XML version line, <?xml
              version="1.0">

       nosoap[=COLUMN];URL;SOAPMESSAGE;[forbidden_data_regexp|#digesttype:digest]
              This tag works just like "soap" tag, but reverses the test.  It is green  when  the
              "forbidden_data_regexp"  is NOT found in the response, and red when it IS found. So
              it can be used to watch for data that should NOT be present in the response, e.g. a
              server error message.

       httphead[=COLUMN];URL
              This is used to perform an HTTP HEAD request instead of a GET.

       httpstatus[=COLUMN];URL;okstatusexpr;notokstatusexpr
              This  is used to explicitly test for certain HTTP statuscodes returned when the URL
              is requested. The okstatusexpr and nokokstatusexpr expressions are  Perl-compatible
              regular  expressions, e.g. "2..|302" will match all OK codes and the redirect (302)
              status code. If the URL cannot be retrieved, the status is "999".

       HIDEHTTP
              The status display for HTTP checks usually includes the URL, and for content checks
              also the actual data from the web page.  If you would like to hide these from view,
              then the HIDEHTTP tag will keep this information from  showing  up  on  the  status
              webpages.

       headermatch
              Content checks by default only search the HTML body returned by the webserver. This
              option causes it to also search the HTTP headers for the string that  must  /  must
              not be present.

       browser=BROWSERNAME
              By  default, Xymon sends an HTTP "User-Agent" header identifying it a "Xymon". Some
              websites require that you use a specific browser, typically Internet  Explorer.  To
              cater  for  testing  of such sites, this tag can be used to modify the data sent in
              the User-Agent header.
              E.g. to perform an HTTP test with Xymon masquerading as an  Internet  Explorer  6.0
              browser,  use browser="Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0)".  If you
              do not know what the User-Agent header should be, open up the  browser  that  works
              with       this       particular       site,       and       open      the      URL
              "javascript:document.writeln(navigator.userAgent)" (just copy this into  the  "Open
              URL"  dialog.  The  text  that shows up is what the browser sends as the User-Agent
              header.

       httphdr=STRING
              Xymon can be send additional headers when performing  HTTP  checks,  to  allow  for
              validation  of  any custom configurations needed for your site. Note that this is a
              host-wide configuration. The string will be added directly to the headers  for  all
              URLs  on  that host. There is currently no way to have this occur only for specific
              URLs checked.
              The  string  should  be  encased   in   quotes,   like   httphdr="X-Requested-With:
              XMLHttpRequest".   Newlines can be included, however the string MUST NOT end with a
              newline as that may cause premature ending of the headers sent.

LDAP (DIRECTORY SERVER) TESTS

       ldap

       ldaps  Simple check for an LDAP service. This check merely looks for any  service  running
              on the ldap/ldaps service port, but does not perform any actual LDAP transaction.

       ldap://hostport/dn[?attrs[?scope[?filter[?exts]]]]
              Check for an LDAP service by performing an LDAP request. This tag is in the form of
              an LDAP URI (cf. RFC 2255). This type of LDAP test requires  that  xymonnet(1)  was
              built  with support for LDAP, e.g. via the OpenLDAP library.  The components of the
              LDAP URI are:
                hostport is a host name with an optional ":portnumber"
                dn is the search base
                attrs is a comma separated list of attributes to request
                scope is one of these three strings:
                  base one sub (default=base)
                filter is filter
                exts are recognized set of LDAP and/or API extensions.

       ldaps://hostport/dn[?attrs[?scope[?filter[?exts]]]]
              LDAP service check using LDAPv3 and STARTTLS for talking to  an  LDAP  server  that
              requires  TLS encryption. See xymonnet(1) for a discussion of the different ways of
              running LDAP servers with SSL/TLS, and which of these are supported by xymonnet.

       ldaplogin=username:password
              Define a username and password to use when binding to the LDAP server for ldap  URI
              tests. If not specified, xymonnet will attempt an anonymous bind.

       ldapyellowfail
              Used  with  an  LDAP  URL  test.  If  the LDAP query fails during the search of the
              directory, the ldap status is normally reported as "red" (alarm). This tag  reduces
              a search failure to a "yellow" (warning) status.

PERFORMANCE MONITORING TESTS

       apache[=URL]
              If  you are running an Apache web server, adding this tag makes xymonnet(1) collect
              performance  statistics  from  the  Apache  web  server   by   querying   the   URL
              http://IP.ADDRESS.OF.HOST/server-status?auto.   The  response  is  sent  as a data-
              report and processed by the Xymon  xymond_rrd  module  into  an  RRD  file  and  an
              "apache"  graph.  If  your  web  server  requires e.g. authentication, or runs on a
              different URL for the server-status, you can provide the full URL needed  to  fetch
              the                    server-status                   page,                   e.g.
              apache=http://LOGIN:PASSWORD@10.0.0.1/server-status?auto for a  password  protected
              server-status  page, or apache=http://10.0.0.1:8080/apache/server-status?auto for a
              server listening on port 8080 and with a different path to the server-status page.

              Note that you need to enable the server-status URL in  your  Apache  configuration.
              The following configuration is needed:

                  <Location /server-status>
                      SetHandler server-status
                      Order deny,allow
                      Deny from all
                      allow from 127.0.0.1
                  </Location>
                  ExtendedStatus On

              Change "127.0.0.1" to the IP-address of the server that runs your network tests.

DEFAULT HOST

       If  you  have certain tags that you want to apply to all hosts, you can define a host name
       ".default." and put the tags on that host. Note that per-host  definitions  will  override
       the default ones. To apply to all hosts this should be listed FIRST in your file.

       NOTE: The ".default." host entry will only accept the following tags - others are silently
       ignored:  delayyellow,  delayred,  NOCOLUMNS,  COMMENT,  DESCR,  CLASS,  dialup,   testip,
       nonongreen,   nodisp,   noinfo,   notrends,  noclient,  TRENDS,  NOPROPRED,  NOPROPYELLOW,
       NOPROPPURPLE, NOPROPACK, REPORTTIME, WARNPCT, NET, noclear, nosslcert, ssldays,  DOWNTIME,
       depends,  noping,  noconn, trace, notrace, HIDEHTTP, browser, pulldata. Specifically, note
       that network tests, "badTEST" settings, and alternate pageset relations cannot  be  listed
       on the ".default." host.

SENDING SUMMARIES TO REMOTE XYMON SERVERS

       summary ROW.COLUMN IP URL
              If  you  have  multiple  Xymon  servers,  the  "summary"  directive lets you form a
              hierarchy of servers by sending the overall status of this server to a remote Xymon
              server, which then displays this in a special summary section. E.g. if your offices
              are spread over three locations, you can have a Xymon server at each office.  These
              branch-office  Xymon have a "summary" definition in their hosts.cfg file that makes
              them report the overall status of their branch Xymon to the  central  Xymon  server
              you maintain at the corporate headquarters.

              Multiple "summary" definitions are allowed.

              The  ROW.COLUMN  setting  defines  how this summary is presented on the server that
              receives the summary. The ROW text will be used as the heading for a summary  line,
              and  the  COLUMN  defines the name of the column where this summary is shown - like
              the hostname and testname used in the normal displays. The IP is the IP-address  of
              the remote (upstream) Xymon server, where this summary is sent). The URL is the URL
              of your local Xymon server.

              The URL need not be that of your Xymon server's main page - it could be the URL  of
              a sub-page on the local Xymon server. Xymon will report the summary using the color
              of the page found at the URL you specify.  E.g. on your corporate Xymon server  you
              want a summary from the Las Vegas office - but you would like to know both what the
              overall status is, and what is the status of the  servers  on  the  critical  Sales
              department  back-office  servers in Las Vegas. So you configure the Las Vegas Xymon
              server to send two summaries:

                  summary Vegas.All 10.0.1.1 http://vegas.foo.com/xymon/
                  summary Vegas.Sales 10.0.1.1 http://vegas.foo.com/xymon/sales/

              This gives you one summary line for Baltimore, with two columns:  An  "All"  column
              showing  the overall status, and a "Sales" column showing the status of the "sales"
              page on the Baltimore Xymon server.

              Note: Pages defined using alternate pageset definitions cannot  be  used,  the  URL
              must point to a web page from the default set of Xymon webpages.

OTHER TAGS

       pulldata[=[IP][:port]]
              This  option  is recognized by the xymonfetch(8) utility, and causes it to poll the
              host for client data. The optional IP-address and port-number can be  used  if  the
              client-side  msgcache(8)  daemon is listening on a non-standard IP-address or port-
              number.

FILES

       ~xymon/server/etc/hosts.cfg

SEE ALSO

       xymongen(1), xymonnet(1), xymondigest(1), xymonserver.cfg(5), xymon(7)