templates/postgres.9.5.template.yml

   1 params:
   2   db_synchronous_commit: "off"
   3   db_shared_buffers: "256MB"
   4   db_work_mem: "10MB"
   5   db_default_text_search_config: "pg_catalog.english"
   6   db_name: discourse
   7   db_user: discourse
   8   db_wal_level: minimal
   9   db_max_wal_senders: 0
  10   db_checkpoint_segments: 6
  11   db_logging_collector: off
  12   db_log_min_duration_statement: 100
  13
  14 hooks:
  15   before_code:
  16     - replace:
  17        filename: /etc/service/unicorn/run
  18        from: "# postgres"
  19        to: sv start postgres || exit 1
  20
  21 run:
  22   - exec: apt-get remove -y postgresql-10 postgresql-client-10 postgresql-contrib-10
  23   - exec: apt-get update && apt-get install -y postgresql-9.5 postgresql-client-9.5 postgresql-contrib-9.5
  24   - exec: mkdir -p /shared/postgres_run
  25   - exec: chown postgres:postgres /shared/postgres_run
  26   - exec: chmod 775 /shared/postgres_run
  27   - exec: rm -fr /var/run/postgresql
  28   - exec: ln -s /shared/postgres_run /var/run/postgresql
  29   - exec: socat /dev/null UNIX-CONNECT:/shared/postgres_run/.s.PGSQL.5432 || exit 0 && echo postgres already running stop container ; exit 1
  30   - exec: rm -fr /shared/postgres_run/.s*
  31   - exec: rm -fr /shared/postgres_run/*.pid
  32   - exec: mkdir -p /shared/postgres_run/9.5-main.pg_stat_tmp
  33   - exec: chown postgres:postgres /shared/postgres_run/9.5-main.pg_stat_tmp
  34   - file:
  35      path: /etc/service/postgres/run
  36      chmod: "+x"
  37      contents: |
  38         #!/bin/sh
  39         exec 2>&1
  40         echo -1000 >/proc/self/oom_score_adj
  41         HOME=/var/lib/postgresql USER=postgres exec chpst -u postgres:postgres:ssl-cert -U postgres:postgres:ssl-cert /usr/lib/postgresql/9.5/bin/postmaster -D /etc/postgresql/9.5/main
  42
  43   - file:
  44      path: /etc/runit/3.d/99-postgres
  45      chmod: "+x"
  46      contents: |
  47        #!/bin/bash
  48        sv stop postgres
  49
  50   - exec:
  51       cmd:
  52         - chown -R root /var/lib/postgresql/9.5/main
  53         - "[ ! -e /shared/postgres_data ] && install -d -m 0755 -o postgres -g postgres /shared/postgres_data && sudo -E -u postgres /usr/lib/postgresql/9.5/bin/initdb -D /shared/postgres_data || exit 0"
  54         - chown -R postgres:postgres /shared/postgres_data
  55         - chown -R postgres:postgres /var/run/postgresql
  56
  57   - replace:
  58       filename: "/etc/postgresql/9.5/main/postgresql.conf"
  59       from: "data_directory = '/var/lib/postgresql/9.5/main'"
  60       to: "data_directory = '/shared/postgres_data'"
  61
  62   # listen on all interfaces
  63   - replace:
  64       filename: "/etc/postgresql/9.5/main/postgresql.conf"
  65       from: /#?listen_addresses *=.*/
  66       to: "listen_addresses = '*'"
  67
  68   # sync commit off is faster and less spiky, also marginally less safe
  69   - replace:
  70       filename: "/etc/postgresql/9.5/main/postgresql.conf"
  71       from: /#?synchronous_commit *=.*/
  72       to: "synchronous_commit = $db_synchronous_commit"
  73
  74   # default is 128MB which is way too small
  75   - replace:
  76       filename: "/etc/postgresql/9.5/main/postgresql.conf"
  77       from: /#?shared_buffers *=.*/
  78       to: "shared_buffers = $db_shared_buffers"
  79
  80   # default is 1MB which is too small
  81   - replace:
  82       filename: "/etc/postgresql/9.5/main/postgresql.conf"
  83       from: /#?work_mem *=.*/
  84       to: "work_mem = $db_work_mem"
  85
  86   # allow for other
  87   - replace:
  88       filename: "/etc/postgresql/9.5/main/postgresql.conf"
  89       from: /#?default_text_search_config *=.*/
  90       to: "default_text_search_config = '$db_default_text_search_config'"
  91
  92   # Necessary to enable backups
  93   - exec:
  94       cmd:
  95         - install -d -m 0755 -o postgres -g postgres /shared/postgres_backup
  96
  97   - replace:
  98       filename: "/etc/postgresql/9.5/main/postgresql.conf"
  99       from: /#?max_wal_senders *=.*/
 100       to: "max_wal_senders = $db_max_wal_senders"
 101
 102   - replace:
 103       filename: "/etc/postgresql/9.5/main/postgresql.conf"
 104       from: /#?wal_level *=.*/
 105       to: "wal_level = $db_wal_level"
 106
 107   - replace:
 108       filename: "/etc/postgresql/9.5/main/postgresql.conf"
 109       from: /#?checkpoint_segments *=.*/
 110       to: "checkpoint_segments = $db_checkpoint_segments"
 111
 112   - replace:
 113       filename: "/etc/postgresql/9.5/main/postgresql.conf"
 114       from: /#?logging_collector *=.*/
 115       to: "logging_collector = $db_logging_collector"
 116
 117   - replace:
 118       filename: "/etc/postgresql/9.5/main/postgresql.conf"
 119       from: /#?log_min_duration_statement *=.*/
 120       to: "log_min_duration_statement = $db_log_min_duration_statement"
 121
 122   - replace:
 123       filename: "/etc/postgresql/9.5/main/pg_hba.conf"
 124       from: /^#local +replication +postgres +peer$/
 125       to: "local replication postgres  peer"
 126
 127   # allow all to connect in with md5 auth
 128   - replace:
 129       filename: "/etc/postgresql/9.5/main/pg_hba.conf"
 130       from: /^host.*all.*all.*127.*$/
 131       to: "host all all 0.0.0.0/0 md5"
 132
 133   - exec:
 134       background: true
 135       # use fast shutdown for pg
 136       stop_signal: INT
 137       cmd: HOME=/var/lib/postgresql USER=postgres exec chpst -u postgres:postgres:ssl-cert -U postgres:postgres:ssl-cert /usr/lib/postgresql/9.5/bin/postmaster -D /etc/postgresql/9.5/main
 138
 139   # give db a few secs to start up
 140   - exec: "sleep 5"
 141
 142   - exec: su postgres -c 'createdb $db_name' || true
 143   - exec: su postgres -c 'psql $db_name -c "create user $db_user;"' || true
 144   - exec: su postgres -c 'psql $db_name -c "grant all privileges on database $db_name to $db_user;"' || true
 145   - exec: su postgres -c 'psql $db_name -c "alter schema public owner to $db_user;"'
 146   - exec: su postgres -c 'psql template1 -c "create extension if not exists hstore;"'
 147   - exec: su postgres -c 'psql template1 -c "create extension if not exists pg_trgm;"'
 148   - exec: su postgres -c 'psql $db_name -c "create extension if not exists hstore;"'
 149   - exec: su postgres -c 'psql $db_name -c "create extension if not exists pg_trgm;"'
 150   - exec:
 151       stdin: |
 152         update pg_database set encoding = pg_char_to_encoding('UTF8') where datname = '$db_name' AND encoding = pg_char_to_encoding('SQL_ASCII');
 153       cmd: sudo -u postgres psql $db_name
 154       raise_on_fail: false
 155
 156   - file:
 157      path: /var/lib/postgresql/take-database-backup
 158      chown: postgres:postgres
 159      chmod: "+x"
 160      contents: |
 161         #!/bin/bash
 162         ID=db-$(date +%F_%T)
 163         FILENAME=/shared/postgres_backup/$ID.tar.gz
 164         pg_basebackup --format=tar --pgdata=- --xlog --gzip --label=$ID > $FILENAME
 165         echo $FILENAME
 166
 167   - file:
 168      path: /var/spool/cron/crontabs/postgres
 169      contents: |
 170         # m h  dom mon dow   command
 171         #MAILTO=?
 172         #0 */4 * * * /var/lib/postgresql/take-database-backup
 173
 174   - exec:
 175       hook: postgres
 176       cmd: "echo postgres installed!"