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Better support for static etcd cluster (#986)

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if the `etcd.use_proxies` is set to true, Patroni will stick to the list of hosts specified in the `etcd.hosts` and avoid doing topology discovery. Such mode might be useful when you know that you connect to the etcd cluster via the set of proxies or when th etcd cluster has static topology.
This commit is contained in:
Alexander Kukushkin
2019-03-07 11:36:36 +01:00
committed by GitHub
parent f0990532dc
commit c64d51f79c
5 changed files with 60 additions and 50 deletions
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docs/ENVIRONMENT.rst
+1
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@@ -50,6 +50,7 @@ Etcd
- **PATRONI\_ETCD\_PROXY**: proxy url for the etcd. If you are connecting to the etcd using proxy, use this parameter instead of **PATRONI\_ETCD\_URL**
- **PATRONI\_ETCD\_URL**: url for the etcd, in format: http(s)://(username:password@)host:port
- **PATRONI\_ETCD\_HOSTS**: list of etcd endpoints in format 'host1:port1','host2:port2',etc...
- **PATRONI\_ETCD\_USE\_PROXIES**: If this parameter is set to true, Patroni will consider **hosts** as a list of proxies and will not perform a topology discovery of etcd cluster but stick to a fixed list of **hosts**.
- **PATRONI\_ETCD\_PROTOCOL**: http or https, if not specified http is used. If the **url** or **proxy** is specified - will take protocol from them.
- **PATRONI\_ETCD\_HOST**: the host:port for the etcd endpoint.
- **PATRONI\_ETCD\_SRV**: Domain to search the SRV record(s) for cluster autodiscovery.
docs/SETTINGS.rst
+3 -2
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@@ -50,8 +50,8 @@ Bootstrap configuration
- **slots**: define permanent replication slots. These slots will be preserved during switchover/failover. Patroni will try to create slots before opening connections to the cluster.
- **my_slot_name**: the name of replication slot. It is the responsibility of the operator to make sure that there are no clashes in names between replication slots automatically created by Patroni for members and permanent replication slots.
- **type**: slot type. Could be ``physical`` or ``logical``. If the slot is logical, you have to additionally define ``database`` and ``plugin``.
**database**: the database name where logical slots should be created.
**plugin**: the plugin name for the logical slot.
- **database**: the database name where logical slots should be created.
- **plugin**: the plugin name for the logical slot.
- **method**: custom script to use for bootstrapping this cluster.
See :ref:`custom bootstrap methods documentation <custom_bootstrap>` for details.
When ``initdb`` is specified revert to the default ``initdb`` command. ``initdb`` is also triggered when no ``method``
@@ -97,6 +97,7 @@ Most of the parameters are optional, but you have to specify one of the **host**
- **host**: the host:port for the etcd endpoint.
- **hosts**: list of etcd endpoint in format host1:port1,host2:port2,etc... Could be a comma separated string or an actual yaml list.
- **use\_proxies**: If this parameter is set to true, Patroni will consider **hosts** as a list of proxies and will not perform a topology discovery of etcd cluster.
- **url**: url for the etcd
- **proxy**: proxy url for the etcd. If you are connecting to the etcd using proxy, use this parameter instead of **url**
- **srv**: Domain to search the SRV record(s) for cluster autodiscovery.