standby cluster support

Added standby cluster support

Image: registry.opensource.zalan.do/acid/spilo-11:1.5-p7

Spilo-1.5-p6

• Patroni 1.5.5
• timescaledb 1.2.1
• pg_stat_kcache extension is enabled by default
• pg_stat_statements.track_utility is set of off
• custom build wal-g (temporary, until it stabilizes)
• better compatibility with S3-compatible storages

Spilo-1.5-p5

• wal-g 0.2.4
• fixed bug in the clone_with_wale.py custom bootstrap script
• More insistent retries in the callback_role.py
• Added after-create.sql for pg_partman, which grants some permissions on partman tables and functions to admin
• Renamed CLONE_WAL_GSC_BUCKET to CLONE_WAL_GCS_BUCKET (fixed a typo)

Spilo-1.5-p3

• PostgreSQL 11
• Patroni 1.5.4
• WAL-G support
• Automatic upgrade of TimescaleDB extension (if installed)
• Experimental support of pg_upgrade following a custom bootstrap (this is not in place pg_upgrade of running cluster!)

Docker image: registry.opensource.zalan.do/acid/spilo-11:1.5-p3

Spilo-10:1.4-p9

• support uploading PostgreSQL logs to S3
  The new LOG_ENV_DIR, LOG_S3_BUCKET, LOG_BUCKET_SCOPE_PREFIX, LOG_BUCKET_SCOPE_SUFFIX, LOG_TMPDIR, PGLOG variables controls where the logs should be uploaded. AWSREGION can be used to choose the AWS region explicitly

• Detect streaming replication in a way compatible with PostgreSQL 11.
  In the new version PostgreSQL the processes names in the ps list has been renamed.

• Protect user management functions from CVE-2018-1058
  Some of the functions have security definer are owned by superuser, therefore it is very important to make sure that they are executed with search_path = 'pg_catalog'

• Attempt to initialize roles and extensions after each promotion.
  This way we can propagate recent changes to those objects during the rolling update

• move all scripts into the /scripts directory

Spilo-1.4-p11

• Bump up Patroni commit ID and use Patroni from the master branch
  Incorporate fixes for the enforcement of the max_worker_processes parameter on 9.3 (the parameter has been introduced only in 9.4), improve the stability of crash_recovery and consult pg_controldata on the replica during the start for parameters like max_connections that are mentioned there and can have a different value on the master. Those fixes will be a part of next Patroni release, but are important enough to use them right away.

Spilo 1.4-p10

• Fix basebackup path in the init script
  In the previous release basebackup was not running because of the typo in the script

• Implement backup retention policy in days
  The old retention policy of using up to certain number of backups was too bad for k8s, where failovers/switchovers would happen rather often

• Add recently added AWS regions to WAL-E

spilo-10-1.4-p8

The new image is based on Ubuntu 18.04 and includes Patroni 1.4.4 and PostgreSQL 9.3, 9.4, 9.5, 9.6 and 10

You can choose the version of PostgreSQL to run by providing PGVERSION environment variable.

Spilo-9.4-0.75-p1

New version of Spilo, incorporating Patroni 0.6 and 0.75 releases. Brings you the ability to use configurable replication_methods, tags (nofailover), the command-line client patronictl (you have to run it from inside the docker container with docker exec) and a lot of bug fixes.

The image can be obtained from registry.opensource.zalan.do/acid/spilo-9.4:0.75-p1. Note that at the moment it relies heavily on the stups.io infrastructure, particularly Taupage (which, in itself, has some other dependencies).