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Document create_replicas_methods in standby_cluster section (#939)

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Fixes https://github.com/zalando/patroni/issues/935
This commit is contained in:
Maxim Ivanov
2019-01-30 11:36:24 +00:00
committed by Alexander Kukushkin
parent 93d157dea3
commit f0b12b7e2e
1 changed files with 11 additions and 3 deletions
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14
docs/replica_bootstrap.rst
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@@ -177,9 +177,15 @@ standby nodes replicating from some remote master. This type of clusters has:
Standby leader holds and updates a leader lock in DCS. If the leader lock
expires, cascade replicas will perform an election to choose another leader
from the standbys. For the sake of flexibility, you can specify different
methods of creating a replica and recovery WAL records when a cluster is in the
"standby mode", and after it was detached to function as a normal cluster.
from the standbys.
For the sake of flexibility, you can specify methods of creating a replica and
recovery WAL records when a cluster is in the "standby mode" by providing
`create_replica_methods` key in `standby_cluster` section. It is distinct from
creating replicas, when cluster is detached and functions as a normal cluster,
which is controlled by `create_replica_methods` in `postgresql` section. Both
"standby" and "normal" `create_replica_methods` reference keys in `postgresql`
section.
To configure such cluster you need to specify the section ``standby_cluster``
in a patroni configuration:
@@ -192,6 +198,8 @@ in a patroni configuration:
host: 1.2.3.4
port: 5432
primary_slot_name: patroni
create_replica_methods:
- basebackup
Note, that these options will be applied only once during cluster bootstrap,
and the only way to change them afterwards is through DCS.