templates/postgres.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
   7 hooks:
   8   before_code:
   9     - replace:
  10        filename: /etc/service/unicorn/run
  11        from: "# postgres"
  12        to: sv start postgres || exit 1
  13
  14 run:
  15   - exec: mkdir -p /shared/postgres_run
  16   - exec: chown postgres:postgres /shared/postgres_run
  17   - exec: chmod 775 /shared/postgres_run
  18   - exec: rm -fr /var/run/postgresql
  19   - exec: ln -s /shared/postgres_run /var/run/postgresql
  20   - exec: socat /dev/null UNIX-CONNECT:/shared/postgres_run/.s.PGSQL.5432 || exit 0 && echo postgres already running stop container ; exit 1
  21   - exec: rm -fr /shared/postgres_run/.s*
  22   - exec: rm -fr /shared/postgres_run/*.pid
  23   - exec: mkdir -p /shared/postgres_run/9.3-main.pg_stat_tmp
  24   - exec: chown postgres:postgres /shared/postgres_run/9.3-main.pg_stat_tmp
  25   - file:
  26      path: /etc/service/postgres/run
  27      chmod: "+x"
  28      contents: |
  29         #!/bin/sh
  30         exec 2>&1
  31         HOME=/var/lib/postgresql USER=postgres exec chpst -u postgres:postgres:ssl-cert -U postgres:postgres:ssl-cert /usr/lib/postgresql/9.3/bin/postmaster -D /etc/postgresql/9.3/main
  32
  33   - file:
  34      path: /etc/runit/3.d/99-postgres
  35      chmod: "+x"
  36      contents: |
  37        #!/bin/bash
  38        sv stop postgres
  39
  40   - file:
  41      path: /root/upgrade_postgres
  42      chmod: "+x"
  43      contents: |
  44        #!/bin/bash
  45        if [ "9.2" = `cat /shared/postgres_data/PG_VERSION` ]; then
  46          echo Upgrading PostgreSQL to from version 9.2 to 9.3
  47          rm -fr /shared/postgres_data_new
  48          install -d -m 0755 -o postgres -g postgres /shared/postgres_data_new && sudo -u postgres /usr/lib/postgresql/9.3/bin/initdb -D /shared/postgres_data_new || exit 0
  49          apt-get update
  50          apt-get install -y postgresql-9.2
  51          /etc/init.d/postgresql stop
  52          rm -fr /shared/postgres_data/postmaster.pid
  53          cd ~postgres
  54          cp /etc/postgresql/9.2/main/*.conf /shared/postgres_data
  55          echo  >> /shared/postgres_data/postgresql.conf
  56          echo "data_directory = '/shared/postgres_data'" >> /shared/postgres_data/postgresql.conf
  57          SUCCESS=true
  58          sudo -u postgres /usr/lib/postgresql/9.3/bin/pg_upgrade -d /shared/postgres_data -D /shared/postgres_data_new -b /usr/lib/postgresql/9.2/bin -B /usr/lib/postgresql/9.3/bin || SUCCESS=false
  59
  60          if [[ "$SUCCESS" == 'false' ]]; then
  61            echo -------------------------------------------------------------------------------------
  62            echo UPGRADE OF POSTGRES FAILED
  63            echo
  64            echo You are going to need to export your data and import into a clean instance:
  65            echo
  66            echo Add the line: 'base_image: "samsaffron/discourse:0.1.1"'
  67            echo Change: "templates/postgres.template.yml TO templates/postgres.9.2.template.yml"
  68            echo
  69            echo Run "./launcher bootstrap" again
  70            echo
  71            echo When your instance is running:
  72            echo - Go to the admin UI, enable readonly and backup your site
  73            echo
  74            echo Then destroy your container "./launcher destroy standalone"
  75            echo Undo the base_image and postgres.9.2 template from your container config
  76            echo Run: "sudo mv /var/discourse/shared/postgres_data /var/shared/postgres_data_old"
  77            echo Run: "./launcher bootstrap"
  78            echo
  79            echo "Login to the blank site, and import your backup (remember to set the allow_restore site setting)"
  80            echo Restart your container: "./launcher restart"
  81            echo -------------------------------------------------------------------------------------
  82            exit 1
  83          fi
  84
  85          mv /shared/postgres_data /shared/postgres_data_old
  86          mv /shared/postgres_data_new /shared/postgres_data
  87
  88          echo -------------------------------------------------------------------------------------
  89          echo UPGRADE OF POSTGRES COMPLETE
  90          echo
  91          echo Old 9.2 database is stored at /shared/postgres_data_old
  92          echo
  93          echo Please run "./launcher bootstrap" again
  94          echo -------------------------------------------------------------------------------------
  95          exit 1
  96        fi
  97   - exec:
  98       cmd:
  99         - chown -R root /var/lib/postgresql/9.3/main
 100         - "[ ! -e /shared/postgres_data ] && install -d -m 0755 -o postgres -g postgres /shared/postgres_data && sudo -E -u postgres /usr/lib/postgresql/9.3/bin/initdb -D /shared/postgres_data || exit 0"
 101         - chown -R postgres:postgres /shared/postgres_data
 102         - chown -R postgres:postgres /var/run/postgresql
 103
 104   - exec: /root/upgrade_postgres
 105   - exec: rm /root/upgrade_postgres
 106
 107   - replace:
 108       filename: "/etc/postgresql/9.3/main/postgresql.conf"
 109       from: "data_directory = '/var/lib/postgresql/9.3/main'"
 110       to: "data_directory = '/shared/postgres_data'"
 111
 112   # listen on all interfaces
 113   - replace:
 114       filename: "/etc/postgresql/9.3/main/postgresql.conf"
 115       from: /#?listen_addresses *=.*/
 116       to: "listen_addresses = '*'"
 117
 118   # sync commit off is faster and less spiky, also marginally less safe
 119   - replace:
 120       filename: "/etc/postgresql/9.3/main/postgresql.conf"
 121       from: /#?synchronous_commit *=.*/
 122       to: "synchronous_commit = $db_synchronous_commit"
 123
 124   # default is 128MB which is way too small
 125   - replace:
 126       filename: "/etc/postgresql/9.3/main/postgresql.conf"
 127       from: /#?shared_buffers *=.*/
 128       to: "shared_buffers = $db_shared_buffers"
 129
 130   # default is 1MB which is too small
 131   - replace:
 132       filename: "/etc/postgresql/9.3/main/postgresql.conf"
 133       from: /#?work_mem *=.*/
 134       to: "work_mem = $db_work_mem"
 135
 136   # allow for other
 137   - replace:
 138       filename: "/etc/postgresql/9.3/main/postgresql.conf"
 139       from: /#?default_text_search_config *=.*/
 140       to: "default_text_search_config = '$db_default_text_search_config'"
 141
 142   # Necessary to enable backups
 143   - exec:
 144       cmd:
 145         - install -d -m 0755 -o postgres -g postgres /shared/postgres_backup
 146
 147   - replace:
 148       filename: "/etc/postgresql/9.3/main/postgresql.conf"
 149       from: /#?max_wal_senders *=.*/
 150       to: "max_wal_senders = 4"
 151
 152   - replace:
 153       filename: "/etc/postgresql/9.3/main/postgresql.conf"
 154       from: /#?wal_level *=.*/
 155       to: "wal_level = hot_standby"
 156
 157   - replace:
 158       filename: "/etc/postgresql/9.3/main/pg_hba.conf"
 159       from: /^#local +replication +postgres +peer$/
 160       to: "local replication postgres  peer"
 161
 162   # allow all to connect in with md5 auth
 163   - replace:
 164       filename: "/etc/postgresql/9.3/main/pg_hba.conf"
 165       from: /^host.*all.*all.*127.*$/
 166       to: "host all all 0.0.0.0/0 md5"
 167
 168   - exec:
 169       background: true
 170       # use fast shutdown for pg
 171       stop_signal: INT
 172       cmd: HOME=/var/lib/postgresql USER=postgres exec chpst -u postgres:postgres:ssl-cert -U postgres:postgres:ssl-cert /usr/lib/postgresql/9.3/bin/postmaster -D /etc/postgresql/9.3/main
 173
 174   # give db a few secs to start up
 175   - exec: "sleep 5"
 176
 177   - exec: su postgres -c 'createdb discourse' || true
 178   - exec: su postgres -c 'psql discourse -c "create user discourse;"' || true
 179   - exec: su postgres -c 'psql discourse -c "grant all privileges on database discourse to discourse;"' || true
 180   - exec: su postgres -c 'psql discourse -c "alter schema public owner to discourse;"'
 181   - exec: su postgres -c 'psql template1 -c "create extension if not exists hstore;"'
 182   - exec: su postgres -c 'psql template1 -c "create extension if not exists pg_trgm;"'
 183   - exec: su postgres -c 'psql discourse -c "create extension if not exists hstore;"'
 184   - exec: su postgres -c 'psql discourse -c "create extension if not exists pg_trgm;"'
 185
 186   - file:
 187      path: /var/lib/postgresql/take-database-backup
 188      chown: postgres:postgres
 189      chmod: "+x"
 190      contents: |
 191         #!/bin/bash
 192         ID=db-$(date +%F_%T)
 193         FILENAME=/shared/postgres_backup/$ID.tar.gz
 194         pg_basebackup --format=tar --pgdata=- --xlog --gzip --label=$ID > $FILENAME
 195         echo $FILENAME
 196
 197   - file:
 198      path: /var/spool/cron/crontabs/postgres
 199      contents: |
 200         # m h  dom mon dow   command
 201         #MAILTO=?
 202         #0 */4 * * * /var/lib/postgresql/take-database-backup
 203
 204   - exec:
 205       hook: postgres
 206       cmd: "echo postgres installed!"