templates/postgres.10.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-9.5 postgresql-client-9.5 postgresql-contrib-9.5
  23   - exec: apt-get update && apt-get install -y postgresql-10 postgresql-client-10 postgresql-contrib-10
  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/10-main.pg_stat_tmp
  33   - exec: chown postgres:postgres /shared/postgres_run/10-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         HOME=/var/lib/postgresql USER=postgres exec chpst -u postgres:postgres:ssl-cert -U postgres:postgres:ssl-cert /usr/lib/postgresql/10/bin/postmaster -D /etc/postgresql/10/main
  41
  42   - file:
  43      path: /etc/runit/3.d/99-postgres
  44      chmod: "+x"
  45      contents: |
  46        #!/bin/bash
  47        sv stop postgres
  48
  49   - file:
  50      path: /root/upgrade_postgres
  51      chmod: "+x"
  52      contents: |
  53        #!/bin/bash
  54        PG_MAJOR_OLD=`cat /shared/postgres_data/PG_VERSION`
  55
  56        if [ ! "10" = "$PG_MAJOR_OLD" ]; then
  57          echo Upgrading PostgreSQL to from version ${PG_MAJOR_OLD} to 10
  58          rm -fr /shared/postgres_data_new
  59          install -d -m 0755 -o postgres -g postgres /shared/postgres_data_new && sudo -u postgres /usr/lib/postgresql/10/bin/initdb -D /shared/postgres_data_new || exit 0
  60          apt-get update
  61          apt-get install -y postgresql-${PG_MAJOR_OLD}
  62          /etc/init.d/postgresql stop
  63          rm -fr /shared/postgres_data/postmaster.pid
  64          cd ~postgres
  65          cp -p /etc/postgresql/${PG_MAJOR_OLD}/main/*.conf /shared/postgres_data
  66          echo  >> /shared/postgres_data/postgresql.conf
  67          echo "data_directory = '/shared/postgres_data'" >> /shared/postgres_data/postgresql.conf
  68          SUCCESS=true
  69          sudo -u postgres /usr/lib/postgresql/10/bin/pg_upgrade -d /shared/postgres_data -D /shared/postgres_data_new -b /usr/lib/postgresql/${PG_MAJOR_OLD}/bin -B /usr/lib/postgresql/10/bin || SUCCESS=false
  70
  71          if [[ "$SUCCESS" == 'false' ]]; then
  72            echo -------------------------------------------------------------------------------------
  73            echo UPGRADE OF POSTGRES FAILED
  74            echo
  75            echo You are going to need to export your data and import into a clean instance:
  76            echo
  77
  78            if [ "$PG_MAJOR_OLD" = "9.5" ]; then
  79              echo 'In containers/app.yml: Change "templates/postgres.template.yml" TO "templates/postgres.9.5.template.yml"'
  80              echo
  81            fi
  82
  83            echo Run "./launcher rebuild app" again
  84            echo
  85            echo When your instance is running:
  86            echo Run "./launcher enter app"
  87            echo Run "cd /shared/postgres_backup && sudo -u postgres pg_dump discourse > backup.db"
  88            echo
  89
  90            if [ "$PG_MAJOR_OLD" = "9.5" ]; then
  91              echo Undo the base_image in your container config
  92            fi
  93
  94            echo Run: "./launcher stop app"
  95            echo Run: "sudo mv /var/discourse/shared/standalone/postgres_data /var/discourse/shared/standalone/postgres_data_old"
  96            echo Run: "./launcher rebuild app"
  97            echo
  98            echo Run: "./launcher enter app"
  99            echo Run: "cd /shared/postgres_backup"
 100            echo Run: "sv stop unicorn"
 101            echo Run: "sudo -iu postgres dropdb discourse"
 102            echo Run: "sudo -iu postgres createdb discourse"
 103            echo Run: "sudo -iu postgres psql discourse < backup.db"
 104            echo Run: "exit"
 105            echo Run: "./launcher rebuild app"
 106            exit 1
 107          fi
 108
 109          mv /shared/postgres_data /shared/postgres_data_old
 110          mv /shared/postgres_data_new /shared/postgres_data
 111
 112          echo -------------------------------------------------------------------------------------
 113          echo UPGRADE OF POSTGRES COMPLETE
 114          echo
 115          echo Old ${PG_MAJOR_OLD} database is stored at /shared/postgres_data_old
 116          echo
 117          echo To complete the upgrade, rebuild again using:
 118          echo
 119          echo     ./launcher rebuild app
 120          echo -------------------------------------------------------------------------------------
 121          # Magic exit status to denote no failure
 122          exit 77
 123        fi
 124
 125   - exec:
 126       cmd:
 127         - chown -R root /var/lib/postgresql/10/main
 128         - "[ ! -e /shared/postgres_data ] && install -d -m 0755 -o postgres -g postgres /shared/postgres_data && sudo -E -u postgres /usr/lib/postgresql/10/bin/initdb -D /shared/postgres_data || exit 0"
 129         - chown -R postgres:postgres /shared/postgres_data
 130         - chown -R postgres:postgres /var/run/postgresql
 131
 132   - exec: /root/upgrade_postgres
 133   - exec: rm /root/upgrade_postgres
 134
 135   - replace:
 136       filename: "/etc/postgresql/10/main/postgresql.conf"
 137       from: "data_directory = '/var/lib/postgresql/10/main'"
 138       to: "data_directory = '/shared/postgres_data'"
 139
 140   # listen on all interfaces
 141   - replace:
 142       filename: "/etc/postgresql/10/main/postgresql.conf"
 143       from: /#?listen_addresses *=.*/
 144       to: "listen_addresses = '*'"
 145
 146   # sync commit off is faster and less spiky, also marginally less safe
 147   - replace:
 148       filename: "/etc/postgresql/10/main/postgresql.conf"
 149       from: /#?synchronous_commit *=.*/
 150       to: "synchronous_commit = $db_synchronous_commit"
 151
 152   # default is 128MB which is way too small
 153   - replace:
 154       filename: "/etc/postgresql/10/main/postgresql.conf"
 155       from: /#?shared_buffers *=.*/
 156       to: "shared_buffers = $db_shared_buffers"
 157
 158   # default is 1MB which is too small
 159   - replace:
 160       filename: "/etc/postgresql/10/main/postgresql.conf"
 161       from: /#?work_mem *=.*/
 162       to: "work_mem = $db_work_mem"
 163
 164   # allow for other
 165   - replace:
 166       filename: "/etc/postgresql/10/main/postgresql.conf"
 167       from: /#?default_text_search_config *=.*/
 168       to: "default_text_search_config = '$db_default_text_search_config'"
 169
 170   # Necessary to enable backups
 171   - exec:
 172       cmd:
 173         - install -d -m 0755 -o postgres -g postgres /shared/postgres_backup
 174
 175   - replace:
 176       filename: "/etc/postgresql/10/main/postgresql.conf"
 177       from: /#?max_wal_senders *=.*/
 178       to: "max_wal_senders = $db_max_wal_senders"
 179
 180   - replace:
 181       filename: "/etc/postgresql/10/main/postgresql.conf"
 182       from: /#?wal_level *=.*/
 183       to: "wal_level = $db_wal_level"
 184
 185   - replace:
 186       filename: "/etc/postgresql/10/main/postgresql.conf"
 187       from: /#?checkpoint_segments *=.*/
 188       to: "checkpoint_segments = $db_checkpoint_segments"
 189
 190   - replace:
 191       filename: "/etc/postgresql/10/main/postgresql.conf"
 192       from: /#?logging_collector *=.*/
 193       to: "logging_collector = $db_logging_collector"
 194
 195   - replace:
 196       filename: "/etc/postgresql/10/main/postgresql.conf"
 197       from: /#?log_min_duration_statement *=.*/
 198       to: "log_min_duration_statement = $db_log_min_duration_statement"
 199
 200   - replace:
 201       filename: "/etc/postgresql/10/main/pg_hba.conf"
 202       from: /^#local +replication +postgres +peer$/
 203       to: "local replication postgres  peer"
 204
 205   # allow all to connect in with md5 auth
 206   - replace:
 207       filename: "/etc/postgresql/10/main/pg_hba.conf"
 208       from: /^host.*all.*all.*127.*$/
 209       to: "host all all 0.0.0.0/0 md5"
 210
 211   - exec:
 212       background: true
 213       # use fast shutdown for pg
 214       stop_signal: INT
 215       cmd: HOME=/var/lib/postgresql USER=postgres exec chpst -u postgres:postgres:ssl-cert -U postgres:postgres:ssl-cert /usr/lib/postgresql/10/bin/postmaster -D /etc/postgresql/10/main
 216
 217   # give db a few secs to start up
 218   - exec: "sleep 5"
 219
 220   - exec: su postgres -c 'createdb $db_name' || true
 221   - exec: su postgres -c 'psql $db_name -c "create user $db_user;"' || true
 222   - exec: su postgres -c 'psql $db_name -c "grant all privileges on database $db_name to $db_user;"' || true
 223   - exec: su postgres -c 'psql $db_name -c "alter schema public owner to $db_user;"'
 224   - exec: su postgres -c 'psql template1 -c "create extension if not exists hstore;"'
 225   - exec: su postgres -c 'psql template1 -c "create extension if not exists pg_trgm;"'
 226   - exec: su postgres -c 'psql $db_name -c "create extension if not exists hstore;"'
 227   - exec: su postgres -c 'psql $db_name -c "create extension if not exists pg_trgm;"'
 228   - exec:
 229       stdin: |
 230         update pg_database set encoding = pg_char_to_encoding('UTF8') where datname = '$db_name' AND encoding = pg_char_to_encoding('SQL_ASCII');
 231       cmd: sudo -u postgres psql $db_name
 232       raise_on_fail: false
 233
 234   - file:
 235      path: /var/lib/postgresql/take-database-backup
 236      chown: postgres:postgres
 237      chmod: "+x"
 238      contents: |
 239         #!/bin/bash
 240         ID=db-$(date +%F_%T)
 241         FILENAME=/shared/postgres_backup/$ID.tar.gz
 242         pg_basebackup --format=tar --pgdata=- --xlog --gzip --label=$ID > $FILENAME
 243         echo $FILENAME
 244
 245   - file:
 246      path: /var/spool/cron/crontabs/postgres
 247      contents: |
 248         # m h  dom mon dow   command
 249         #MAILTO=?
 250         #0 */4 * * * /var/lib/postgresql/take-database-backup
 251
 252   - exec:
 253       hook: postgres
 254       cmd: "echo postgres installed!"