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4c3af2d1a0
keep as much backward compatibility as possible.
Following changes were made:
1. All internal checks are performed as `role in ('master', 'primary')`
2. All internal variables/functions/methods are renamed
3. `GET /metrics` endpoint returns `patroni_primary` in addition to `patroni_master`.
4. Logs are changed to use leader/primary/member/remote depending on the context
5. Unit-tests are using only role = 'primary' instead of 'master' to verify that 1 works.
6. patronictl still supports old syntax, but also accepts `--leader` and `--primary`.
7. `master_(start|stop)_timeout` is automatically translated to `primary_(start|stop)_timeout` if the last one is not set.
8. updated the documentation and some examples
Future plan: in the next major release switch role name from `master` to `primary` and maybe drop `master` altogether.
The Kubernetes implementation will require more work and keep two labels in parallel. Label values should probably be configurable as described in https://github.com/zalando/patroni/issues/2495.
confd
confd directory contains haproxy and pgbouncer template files for the confd -- lightweight configuration management tool
You need to copy content of confd directory into /etcd/confd and run confd service:
$ confd -prefix=/service/$PATRONI_SCOPE -backend etcd -node $PATRONI_ETCD_URL -interval=10
It will periodically update haproxy.cfg and pgbouncer.ini with the actual list of Patroni nodes from etcd and "reload" haproxy and pgbouncer.ini when it is necessary.
startup-scripts
startup-scripts directory contains startup scripts for various OSes and management tools for Patroni.