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environment-etcd-rdo.rst 1.4KB

Etcd for RHEL and CentOS

OpenStack services may use Etcd, a distributed reliable key-value store for distributed key locking, storing configuration, keeping track of service live-ness and other scenarios.

The etcd service runs on the controller node.

Install and configure components

  1. Install the package:

    # yum install etcd
  2. Edit the /etc/etcd/etcd.conf file and set the ETCD_INITIAL_CLUSTER, ETCD_INITIAL_ADVERTISE_PEER_URLS, ETCD_ADVERTISE_CLIENT_URLS, ETCD_LISTEN_CLIENT_URLS to the management IP address of the controller node to enable access by other nodes via the management network:

Finalize installation

  1. Enable and start the etcd service:

    # systemctl enable etcd
    # systemctl start etcd