NAME

       swift-dispersion-report - OpenStack Swift dispersion report

SYNOPSIS

       swift-dispersion-report   [-d|--debug]  [-j|--dump-json]  [-p|--partitions]  [--container-
       only|--object-only] [--insecure] [conf_file]

DESCRIPTION

       This is one of the swift-dispersion utilities that is used to evaluate the overall cluster
       health.  This  is accomplished by checking if a set of deliberately distributed containers
       and objects are currently in their proper places within the cluster.

       For instance, a common deployment has three replicas of each object.  The health  of  that
       object  can  be  measured by checking if each replica is in its proper place. If only 2 of
       the 3 is in place the object's health can be said to be at 66.66%,  where  100%  would  be
       perfect.

       Once  the  swift-dispersion-populate has been used to populate the dispersion account, one
       should run the swift-dispersion-report tool repeatedly for the life  of  the  cluster,  in
       order to check the health of each of these containers and objects.

       These  tools  need  direct access to the entire cluster and to the ring files.  Installing
       them on a proxy server will probably do or a box used for  swift  administration  purposes
       that also contains the common swift packages and ring.  Both swift-dispersion-populate and
       swift-dispersion-report use the same configuration file, /etc/swift/dispersion.conf .  The
       account used by these tool should be a dedicated account for the dispersion stats and also
       have admin privileges.

OPTIONS

       -d, --debug
              output any 404 responses to standard error

       -j, --dump-json
              output dispersion report in json format

       -p, --partitions
              output the partition numbers that have any missing replicas

       --container-only
              Only run the container report

       --object-only
              Only run the object report

       --insecure
              Allow accessing insecure keystone server. The keystone's certificate  will  not  be
              verified.

       -P, --policy-name
              Specify storage policy name

CONFIGURATION

       Example /etc/swift/dispersion.conf:

          [dispersion]
          auth_url = https://127.0.0.1:443/auth/v1.0
          auth_user = dpstats:dpstats
          auth_key = dpstats
          swift_dir = /etc/swift
          # project_name = dpstats
          # project_domain_name = default
          # user_domain_name = default
          # dispersion_coverage = 1.0
          # retries = 5
          # concurrency = 25
          # dump_json = no
          # endpoint_type = publicURL

EXAMPLE

       $ swift-dispersion-report

        Queried 2622 containers for dispersion reporting, 31s, 0 retries
        100.00% of container copies found (7866 of 7866)
        Sample represents 1.00% of the container partition space

        Queried 2621 objects for dispersion reporting, 22s, 0 retries
        100.00% of object copies found (7863 of 7863)
        Sample represents 1.00% of the object partition space

DOCUMENTATION

       More  in depth documentation about the swift-dispersion utilities and also OpenStack Swift
       as           a           whole            can            be            found            at
       https://docs.openstack.org/swift/latest/admin_guide.html#dispersion-report             and
       https://docs.openstack.org/swift/latest/

SEE ALSO

       swift-dispersion-populate(1), dispersion.conf(5)