From e924eb6bc4e68ae6342fb41b609026ded44d3338 Mon Sep 17 00:00:00 2001
From: Sam <sam.saffron@gmail.com>
Date: Tue, 17 May 2016 22:52:20 +1000
Subject: [PATCH] try to get template to work

---
 templates/postgres.9.3.template.yml | 101 ++++++++++++++++++++++++++++
 1 file changed, 101 insertions(+)

diff --git a/templates/postgres.9.3.template.yml b/templates/postgres.9.3.template.yml
index fc1308c..57f1398 100644
--- a/templates/postgres.9.3.template.yml
+++ b/templates/postgres.9.3.template.yml
@@ -1,3 +1,17 @@
+params:
+  db_synchronous_commit: "off"
+  db_shared_buffers: "256MB"
+  db_work_mem: "10MB"
+  db_default_text_search_config: "pg_catalog.english"
+  db_name: discourse
+  db_user: discourse
+  db_wal_level: minimal
+  db_max_wal_senders: 0
+  db_checkpoint_segments: 6
+  db_logging_collector: off
+  db_log_min_duration_statement: 100
+
+
 hooks:
   before_code:
     - replace:
@@ -6,6 +20,7 @@ hooks:
        to: sv start postgres || exit 1
 
 run:
+  - exec: apt-get remove -y postgresql-9.5
   - exec: apt-get update && apt-get install -y postgresql-9.3
   - exec: /etc/init.d/postgresql stop
   - exec: mkdir -p /shared/postgres_run
@@ -52,6 +67,60 @@ run:
       from: /#?listen_addresses *=.*/
       to: "listen_addresses = '*'"
 
+  # sync commit off is faster and less spiky, also marginally less safe
+  - replace:
+      filename: "/etc/postgresql/9.3/main/postgresql.conf"
+      from: /#?synchronous_commit *=.*/
+      to: "synchronous_commit = $db_synchronous_commit"
+
+  # default is 128MB which is way too small
+  - replace:
+      filename: "/etc/postgresql/9.3/main/postgresql.conf"
+      from: /#?shared_buffers *=.*/
+      to: "shared_buffers = $db_shared_buffers"
+
+  # default is 1MB which is too small
+  - replace:
+      filename: "/etc/postgresql/9.3/main/postgresql.conf"
+      from: /#?work_mem *=.*/
+      to: "work_mem = $db_work_mem"
+
+  # allow for other
+  - replace:
+      filename: "/etc/postgresql/9.3/main/postgresql.conf"
+      from: /#?default_text_search_config *=.*/
+      to: "default_text_search_config = '$db_default_text_search_config'"
+
+  # Necessary to enable backups
+  - exec:
+      cmd:
+        - install -d -m 0755 -o postgres -g postgres /shared/postgres_backup
+
+  - replace:
+      filename: "/etc/postgresql/9.3/main/postgresql.conf"
+      from: /#?max_wal_senders *=.*/
+      to: "max_wal_senders = $db_max_wal_senders"
+
+  - replace:
+      filename: "/etc/postgresql/9.3/main/postgresql.conf"
+      from: /#?wal_level *=.*/
+      to: "wal_level = $db_wal_level"
+
+  - replace:
+      filename: "/etc/postgresql/9.3/main/postgresql.conf"
+      from: /#?checkpoint_segments *=.*/
+      to: "checkpoint_segments = $db_checkpoint_segments"
+
+  - replace:
+      filename: "/etc/postgresql/9.3/main/postgresql.conf"
+      from: /#?logging_collector *=.*/
+      to: "logging_collector = $db_logging_collector"
+
+  - replace:
+      filename: "/etc/postgresql/9.3/main/postgresql.conf"
+      from: /#?log_min_duration_statement *=.*/
+      to: "log_min_duration_statement = $db_log_min_duration_statement"
+
   - replace:
       filename: "/etc/postgresql/9.3/main/pg_hba.conf"
       from: /^#local +replication +postgres +peer$/
@@ -72,6 +141,38 @@ run:
   # give db a few secs to start up
   - exec: "sleep 5"
 
+  - exec: su postgres -c 'createdb $db_name' || true
+  - exec: su postgres -c 'psql $db_name -c "create user $db_user;"' || true
+  - exec: su postgres -c 'psql $db_name -c "grant all privileges on database $db_name to $db_user;"' || true
+  - exec: su postgres -c 'psql $db_name -c "alter schema public owner to $db_user;"'
+  - exec: su postgres -c 'psql template1 -c "create extension if not exists hstore;"'
+  - exec: su postgres -c 'psql template1 -c "create extension if not exists pg_trgm;"'
+  - exec: su postgres -c 'psql $db_name -c "create extension if not exists hstore;"'
+  - exec: su postgres -c 'psql $db_name -c "create extension if not exists pg_trgm;"'
+  - exec:
+      stdin: |
+        update pg_database set encoding = pg_char_to_encoding('UTF8') where datname = '$db_name' AND encoding = pg_char_to_encoding('SQL_ASCII');
+      cmd: sudo -u postgres psql $db_name
+      raise_on_fail: false
+
+  - file:
+     path: /var/lib/postgresql/take-database-backup
+     chown: postgres:postgres
+     chmod: "+x"
+     contents: |
+        #!/bin/bash
+        ID=db-$(date +%F_%T)
+        FILENAME=/shared/postgres_backup/$ID.tar.gz
+        pg_basebackup --format=tar --pgdata=- --xlog --gzip --label=$ID > $FILENAME
+        echo $FILENAME
+
+  - file:
+     path: /var/spool/cron/crontabs/postgres
+     contents: |
+        # m h  dom mon dow   command
+        #MAILTO=?
+        #0 */4 * * * /var/lib/postgresql/take-database-backup
+
   - exec:
       hook: postgres
       cmd: "echo postgres installed!"
-- 
2.25.1