openstack/openstack-manuals
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openstack-manuals/doc/install-guide/source/environment-etcd-rdo.rst
blkart c2bc36fe7e Add etcd configuration steps for RHEL and CentOS 
Closes-Bug: #1740233

Change-Id: I59de4a7bf009a866c978512c6466803ba850f9c1
Signed-off-by: blkart <blkart.org@gmail.com>
2018-01-03 00:39:38 +08:00

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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.

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:

    #[Member]
ETCD_DATA_DIR="/var/lib/etcd/default.etcd"
ETCD_LISTEN_PEER_URLS="http://10.0.0.11:2380"
ETCD_LISTEN_CLIENT_URLS="http://10.0.0.11:2379"
ETCD_NAME="controller"
#[Clustering]
ETCD_INITIAL_ADVERTISE_PEER_URLS="http://10.0.0.11:2380"
ETCD_ADVERTISE_CLIENT_URLS="http://10.0.0.11:2379"
ETCD_INITIAL_CLUSTER="controller=http://10.0.0.11:2380"
ETCD_INITIAL_CLUSTER_TOKEN="etcd-cluster-01"
ETCD_INITIAL_CLUSTER_STATE="new"

Finalize installation

  1. Enable and start the etcd service:

    # systemctl enable etcd
# systemctl start etcd