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115 Commits 15 Branches 66 Tags
b8ce6794de1b2d43b0b572c0fa6c5310821aeae4
Commit Graph
78 Commits
Author SHA1 Message Date
Feike Steenbergen b8ce6794de Initialize cluster with encoding=UTF8 by default. 2015-05-18 13:35:43 +02:00
Alexander Kukushkin e997911b8d Merge branch 'master' of github.com:CyberDem0n/governor 
Conflicts:
	helpers/postgresql.py
 2015-05-15 16:21:59 +02:00
Alexander Kukushkin 348100752b Open connection to self via listen address 2015-05-15 16:18:31 +02:00
Feike Steenbergen 0b669e0d20 Cleanup 
Removed aws reference from Dockerfile, remove unnecessary steps.
Connect using libpq parameters, therefore providing nice application name for Governor.
 2015-05-15 13:52:20 +02:00
Alexander Kukushkin 5ab99c6589 Get rid from all AWS references here. 
connect_address give possibility to specify listen address and connect
address separetely, so there is no need to determine your external
address by doing requests to amazon api.
 2015-05-15 12:39:05 +02:00
Alexander Kukushkin af9ebfa3b9 Use connect_address instead of listen when building connection_string 2015-05-15 12:20:24 +02:00
Alexander Kukushkin 75ff91d017 rename connection_address to connect_address 2015-05-15 12:13:05 +02:00
Alexander Kukushkin 08865512f8 Differentiate between connection address and listen address 
For example you can listen on 0.0.0.0 but provide service on some
didicated ip. This should cover all possible use-cases when you are
running behind firewall, load balancer or inside for example docker.
 2015-05-15 12:06:04 +02:00
Alexander Kukushkin 2fd81a5135 Merge branch 'master' of github.com:CyberDem0n/governor into features/refactoring 2015-05-15 11:39:25 +02:00
Alexander Kukushkin 274bc14bfb Do not check maximum_lag_on_failover if it is not defined in config file 2015-05-15 11:38:50 +02:00
Alexander Kukushkin 8e5beb5883 Small optimization 2015-05-15 11:25:26 +02:00
Alexander Kukushkin 9487aec842 Bugfix: get_client_path might get into infinite loop when response code is not 200 2015-05-15 11:23:02 +02:00
Alexander Kukushkin e6e19359df Bugfix, write state_handler.name into leader key 2015-05-13 18:04:27 +02:00
Alexander Kukushkin 0c040b8ce2 Merge branch 'master' of github.com:compose/governor 
Conflicts:
	governor.py
	helpers/etcd.py
	helpers/ha.py
	helpers/postgresql.py
 2015-05-13 18:01:01 +02:00
Alexander Kukushkin b4f0909afa Merge branch 'master' of github.com:CyberDem0n/governor into features/refactoring 2015-05-13 17:12:32 +02:00
Alexander Kukushkin 40a4192504 Remove member and leader (is I was the master) keys from etcd on stop of governor 2015-05-13 17:12:17 +02:00
Alexander Kukushkin 3fa0476d8c Merge branch 'master' of github.com:zalando/governor into features/refactoring 2015-05-13 14:58:54 +02:00
Alexander Kukushkin b1f43c1461 Merge branch 'master' of github.com:CyberDem0n/governor into features/refactoring 
Conflicts:
	helpers/postgresql.py
 2015-05-13 14:57:57 +02:00
Alexander Kukushkin d25ad17c32 Add support of python3 2015-05-13 14:53:23 +02:00
Christopher Winslett 2c69074652 move stale protection from is_healthy to is_healthiest to allow stale secondaries to rejoin cluster 2015-05-12 18:29:54 -07:00
Christopher Winslett 557bad37cd ensure a stale Postgres does not become leader 2015-05-12 18:11:12 -07:00
Christopher Winslett a1bc07db33 use TTLs with member listing to keep a current list of cluster members 2015-05-12 16:33:32 -07:00
Feike Steenbergen c4168bfeb5 Bugfix: Headers sent before http status for the pg_status page. 2015-05-12 14:56:02 +02:00
Feike Steenbergen 362b6b4fa2 Made healtcheck port configurable, fixed standalone status page. 2015-05-12 14:48:40 +02:00
Feike Steenbergen ed30684d85 Merge branch 'features/refactoring' of github.com:zalando/governor into feature/status_page 
Conflicts:
	helpers/postgresql.py
 2015-05-12 14:39:51 +02:00
Feike Steenbergen d25fdd41a6 Refactoring of the status page for the healthcheck. 
Less functions, as the code is readable enough without them.
Always return some content to the client, instead of a response only.
 2015-05-12 14:14:20 +02:00
Alexander Kukushkin 17112992d0 Merge branch 'master' of github.com:zalando/governor into features/refactoring 
Conflicts:
	governor.py
 2015-05-12 12:24:09 +02:00
Feike Steenbergen a56b346295 Hardened the health checks and implemented a real status page. 
For the postgresql helper, hardened the code to get "the" cursor of the postgresql instance.
For the statuspage, a small status json is returned.
To find out what status a PostgreSQL cluster is in we use the cursor (instead of the provided query() function), as the query function does some retrying etc. For the healthcheck we want to simple provide an answer to a simple query, if we have to reconnect, we are not *that* healthy anyway.

Dropped catching exceptions in the do_GET block, as the HTTPServer will do that nicely for us anyway.
 2015-05-12 11:58:47 +02:00
Alexander Kukushkin e21e896852 Merge branch 'master' of github.com:CyberDem0n/governor into features/refactoring 2015-05-12 11:08:33 +02:00
Alexander Kukushkin 281b0b8455 Bugfix in has_lock: sometimes leader can be undefined 2015-05-12 11:07:52 +02:00
Alexander Kukushkin 9dcbc75fd2 Bugfix. It wasn't possible to start the old cluster if all its members were shutdown. 
Basically this is rollback to the original decision tree with the small exception:
1 - If leader is defined and it's not me - then slave would be started immidiately
with the correct recovery conf.
2 - If leader is defined in and it's my host, then it will start instance in
readonly (but without primary_conninfo in recovery.conf)
3 - And the third case - if the leader is not defined - it also will start
instance in readonly, without primary_conninfo.
After performing 2 or 3 it will perform usual decision tree.
 2015-05-12 10:19:45 +02:00
Alexander Kukushkin 41942ee722 Merge branch 'master' of github.com:CyberDem0n/governor into features/refactoring 2015-05-12 09:09:49 +02:00
Alexander Kukushkin be7677a1b8 Bugfix, hostname and address are not keys of dict but properties of Member object 2015-05-12 09:08:45 +02:00
Alexander Kukushkin 1370923e84 Merge branch 'master' of github.com:CyberDem0n/governor into features/refactoring 2015-05-11 16:58:26 +02:00
Alexander Kukushkin e2faf641d5 Start slave with the correct recovery.conf on governor start 
Also governor is able to pick up already running master and slave
instances without restarting them.
In case is you have a lock and postgres is not running behaviour remains
the same: it will start master in read only mode and then promote if it
still has the lock.
 2015-05-11 16:50:21 +02:00
Alexander Kukushkin eb1721f65f Minimize amount of requests to etcd 2015-05-11 15:15:08 +02:00
Feike Steenbergen e7adb69503 Start the http request handler for load balancing as a thread in Governor. 
When not running standalone, some better referencing to the Postgresql instance was needed.
 2015-05-11 13:11:09 +02:00
Feike Steenbergen 91b71f8579 Created tatuspage, a health check for a PostgreSQL cluster served using http. 
The StatusPage uses a BaseHTTPServer to server 3 simple http endpoints:

- pg_master, returns 200 if PostgreSQL is running as master
- pg_slave,  returns 200 if PostgreSQL is running as slave
- pg_status, returns some information about the cluster

It does this by relying on the PostgreSQL connection of the Governor.
 2015-05-11 11:46:01 +02:00
Alexander Kukushkin 42d9c08c37 Merge branch 'master' of github.com:CyberDem0n/governor into features/refactoring 2015-05-11 10:06:29 +02:00
Alexander Kukushkin 6d17d39776 Backport from compose/governor: compare xlog positions based on bytes since 0/000000 based on feedback 2015-05-11 10:06:18 +02:00
Alexander Kukushkin b3d6997289 Merge branch 'master' of github.com:CyberDem0n/governor into features/refactoring 2015-05-11 09:54:28 +02:00
Alexander Kukushkin 2e3eb333cb Shutdown fast 2015-05-11 09:48:59 +02:00
Alexander Kukushkin 0b288a7f3e Track list of already existing physical replication slots 
Drop replication slot when it was removed from etcd.
Execute pg_create_physical_replication_slot only when something new appeared in etcd.
 2015-05-11 09:48:15 +02:00
Alexander Kukushkin 8cfbdcfcd4 Track list of already existing physical replication slots 
Drop replication slot when it was removed from etcd.
Execute pg_create_physical_replication_slot only when something new appeared in etcd.
 2015-05-11 09:44:57 +02:00
Alexander Kukushkin 588c951a86 Return True after success call of update_leader and check return code 2015-05-11 08:48:51 +02:00
Christopher Winslett 36c4c31e83 compare xlog positions based on bytes since 0/000000 based on feedback 2015-05-10 19:36:59 -07:00
Alexander Kukushkin db7a38f025 Merge branch 'master' of github.com:CyberDem0n/governor into features/refactoring 2015-05-08 16:33:41 +02:00
Alexander Kukushkin 3a6afe5a9b Set environment variable PGPASSFILE via os.environ before running pg_basebackup and unset it afterwards 2015-05-08 16:32:57 +02:00
Alexander Kukushkin 72010f68cc Bugfix: two calls has_lock and update_lock are not atomic 
Having a lock a few moments ago, doesn't mean that you will be able to
update it.
 2015-05-08 16:21:09 +02:00
Alexander Kukushkin d9f3b232c5 Merge branch 'master' of github.com:CyberDem0n/governor into features/refactoring 
Conflicts:
	helpers/postgresql.py
 2015-05-08 13:36:49 +02:00