49 lines
1.4 KiB
ReStructuredText
49 lines
1.4 KiB
ReStructuredText
========================
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Etcd for RHEL and CentOS
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========================
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OpenStack services may use Etcd, a distributed reliable key-value store
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for distributed key locking, storing configuration, keeping track of service
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live-ness and other scenarios.
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The etcd service runs on the controller node.
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Install and configure components
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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#. Install the package:
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.. code-block:: console
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# dnf install etcd
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2. Edit the ``/etc/etcd/etcd.conf`` file and set the ``ETCD_INITIAL_CLUSTER``,
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``ETCD_INITIAL_ADVERTISE_PEER_URLS``, ``ETCD_ADVERTISE_CLIENT_URLS``,
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``ETCD_LISTEN_CLIENT_URLS`` to the management IP address of the controller
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node to enable access by other nodes via the management network:
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.. code-block:: ini
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#[Member]
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ETCD_DATA_DIR="/var/lib/etcd/default.etcd"
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ETCD_LISTEN_PEER_URLS="http://10.0.0.11:2380"
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ETCD_LISTEN_CLIENT_URLS="http://10.0.0.11:2379"
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ETCD_NAME="controller"
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#[Clustering]
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ETCD_INITIAL_ADVERTISE_PEER_URLS="http://10.0.0.11:2380"
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ETCD_ADVERTISE_CLIENT_URLS="http://10.0.0.11:2379"
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ETCD_INITIAL_CLUSTER="controller=http://10.0.0.11:2380"
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ETCD_INITIAL_CLUSTER_TOKEN="etcd-cluster-01"
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ETCD_INITIAL_CLUSTER_STATE="new"
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Finalize installation
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~~~~~~~~~~~~~~~~~~~~~
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#. Enable and start the etcd service:
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.. code-block:: console
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# systemctl enable etcd
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# systemctl start etcd
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