NAME

       ipa-join - Join a machine to an IPA realm and get a keytab for the host service principal

SYNOPSIS

       ipa-join  [-d|--debug]  [-q|--quiet] [-u|--unenroll] [-h|--hostname hostname] [-s|--server
       hostname] [-k|--keytab filename] [-w|--bindpw password] [-b|--basedn  basedn]  [-?|--help]
       [--usage]

DESCRIPTION

       Joins  a  host  to  an  IPA  realm  and  retrieves  a kerberos keytab for the host service
       principal, or unenrolls an enrolled host from an IPA server.

       Kerberos keytabs are used for services (like sshd) to perform kerberos  authentication.  A
       keytab is a file with one or more secrets (or keys) for a kerberos principal.

       The    ipa-join   command   will   create   and   retrieve   a   service   principal   for
       host/foo.example.com@EXAMPLE.COM and  place  it  by  default  into  /etc/krb5.keytab.  The
       location can be overridden with the -k option.

       The IPA server to contact is set in /etc/ipa/default.conf by default and can be overridden
       using the -s,--server option.

       In order to join the machine needs to be authenticated. This can  happen  in  one  of  two
       ways:

       * Authenticate using the current kerberos principal

       * Provide a password to authenticate with

       If  a client host has already been joined to the IPA realm the ipa-join command will fail.
       The host will need to be removed from the server using `ipa host-del  FQDN`  in  order  to
       join the client to the realm.

       This  command  is  normally  executed  by  the  ipa-client-install  command as part of the
       enrollment process.

       The reverse is unenrollment. Unenrolling a host  removes  the  Kerberos  key  on  the  IPA
       server.  This  prepares the host to be re-enrolled. This uses the host principal stored in
       /etc/krb5.conf to authenticate to the IPA server to perform the unenrollment.

       Please note, that while the ipa-join option removes the client from the  domain,  it  does
       not actually uninstall the client or properly remove all of the IPA-related configuration.
       The only way to uninstall a client completely is  to  use  ipa-client-install  --uninstall
       (see ipa-client-install(1)).

OPTIONS

       -h,--hostname hostname
              The   hostname   of  this  server  (FQDN).  By  default  the  canonical  name  from
              getaddrinfo(3) for gethostname(2) is used.

       -s,--server server
              The hostname  of  the  IPA  server  (FQDN).  Note  that  by  default  there  is  no
              /etc/ipa/default.conf, in most cases it needs to be supplied.

       -k,--keytab keytab-file
              The keytab file where to append the new key (will be created if it does not exist).
              Default: /etc/krb5.keytab

       -w,--bindpw password
              The password to use if not using Kerberos to authenticate. Use a password  of  this
              particular host (one time password created on IPA server)

       -b,--basedn basedn
              The  basedn  of the IPA server (of the form dc=example,dc=com). This is only needed
              when not using Kerberos to authenticate and anonymous binds are disallowed  in  the
              IPA LDAP server.

       -f,--force
              Force enrolling the host even if host entry exists.

       -u,--unenroll
              Unenroll  this  host from the IPA server. No keytab entry is removed in the process
              (see ipa-rmkeytab(1)).

       -q,--quiet
              Quiet mode. Only errors are displayed.

       -d,--debug
              Print the raw RPC output in GSSAPI mode.

EXAMPLES

       Join IPA domain and retrieve a keytab with kerberos credentials.

         # kinit admin
         # ipa-join

       Join IPA domain and retrieve a keytab using a one-time password.

         # ipa-join -w secret123

       Join IPA domain and save the keytab in another location.

         # ipa-join -k /tmp/host.keytab

EXIT STATUS

       The exit status is 0 on success, nonzero on error.

       0 Success

       1 Kerberos context initialization failed

       2 Incorrect usage

       3 Out of memory

       4 Invalid service principal name

       5 No Kerberos credentials cache

       6 No Kerberos principal and no bind DN and password

       7 Failed to open keytab

       8 Failed to create key material

       9 Setting keytab failed

       10 Bind password required when using a bind DN

       11 Failed to add key to keytab

       12 Failed to close keytab

       13 Host is already enrolled

       14 LDAP failure

       15 Incorrect bulk password

       16 Host name must be fully-qualified

       17 RPC fault

       18 Principal not found in host entry

       19 Unable to generate Kerberos credentials cache

       20 Unenrollment result not in RPC response

       21 Failed to get default Kerberos realm

       22 Unable to auto-detect fully-qualified hostname

SEE ALSO

       ipa-rmkeytab(1) ipa-client-install(1)