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