Alexander Kukushkin e38fe78b56 Fix callbacks behavior (mostly for standby cluster) (#998) ...

First of all, this patch changes the behavior of `on_start`/`on_restart` callbacks, they will be called only when postgres is started or restarted without role changes. In case if the member is promoted or demoted only the `on_role_change` callback will be executed. `on_role_change` was never called for standby leader, only `on_start`/`on_restart` and with a wrong role argument.
Before that `on_role_change` was never called for standby leader, only `on_start`/`on_restart` and with a wrong role argument.

In addition to that, the REST API will return standby_leader role for the leader of the standby cluster.

Closes https://github.com/zalando/patroni/issues/988

2019-03-29 10:28:07 +01:00

1.3 KiB

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