openstack/openstack-manuals
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openstack-manuals/doc/install-guide/source/environment-etcd-rdo.rst
Stephen Finucane 2250b193e4 Remove '.. end' comments 
These were used by now-dead tooling. We can remove them.

Change-Id: I4b4ef694206249da8b98589b3026f2a2be501ee3
Signed-off-by: Stephen Finucane <sfinucan@redhat.com>
2018-09-25 16:02:19 +01:00

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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