Managing OpenStack services

Stopping all OpenStack services

In an HA environment

  1. Disable OpenStack services on the compute nodes. On each compute node, run:

      openstack-service stop

  2. Disable all Pacemaker managed resources. You can do this by setting the stop_all_services property on the cluster. Run the following on a single member of your Pacemaker cluster:

      pcs property set stop_all_resources=true

    Then wait until the output of pcs status shows that all resources have stopped.

In a non-HA environment

Run the following command on all of your OpenStack hosts:

# openstack-service stop

Starting all OpenStack services

In an HA environment

  1. Allow Pacemaker to restart your resources by resetting the stop_all_resources property. On a single member of your Pacemaker cluster, run:

      pcs property set stop_all_resources=false

    Then wait until the output of pcs status shows that all resources have started (this may take several minutes).

  2. Restart OpenStack services on the compute nodes. On each compute node, run:

      openstack-service start

In a non-HA environment

On all of the systems in your OpenStack environment, run:

# openstack-service start

A note regarding the openstack-service command

These instructions make use of the openstack-service command, available from the openstack-utils package. After configuring the appropriate repositories, you can upgrade to the latest version by running:

# yum install openstack-utils