7.7. Loading Capacity Data from a File

The Administration Console uses the same Admin Stats library used by the oo-stats command to collect capacity data. Record the YAML or JSON output from the oo-stats command and use the output directly instead of the actual system data using the following procedure:

Procedure 7.1. To Load Capacity Data from a File:

  1. Run the following command to gather capacity data on a broker host, which then records the output to a file. Replace yaml with json, if needed: 
    # oo-stats -f yaml > /tmp/stats.yaml
  2. Copy /tmp/stats.yaml to the host running the Administration Console, if needed.
  3. Set /tmp/stats.yaml in the STATS_FROM_FILE parameter in the /etc/openshift/plugins.d/openshift-origin-admin-console.conf file.
  4. SELinux limits what the broker application can read (for example, it cannot ordinarily read /tmp entries). To ensure that the broker can read the data file, adjust its context as follows: 
    # chcon system_u:object_r:httpd_sys_content_t:s0 /tmp/stats.yaml
  5. Restart the broker: 
    # service openshift-broker restart
The Administration Console will now use the loaded file for capacity views and suggestions, although navigation still only works for entities actually present.