From 826bec925f11718fe1c8f06ecd6bf705315f45b5 Mon Sep 17 00:00:00 2001
From: Moritz <moritz.m@local-it.org>
Date: Thu, 24 Oct 2024 17:03:02 +0200
Subject: [PATCH] add example pg_backup.sh script

---
 README.md    |  2 +-
 pg_backup.sh | 34 ++++++++++++++++++++++++++++++++++
 2 files changed, 35 insertions(+), 1 deletion(-)
 create mode 100644 pg_backup.sh

diff --git a/README.md b/README.md
index 0bcdb81..99985f7 100644
--- a/README.md
+++ b/README.md
@@ -192,7 +192,7 @@ services:
         backupbot.backup.pre-hook: "/pg_backup.sh backup"
         backupbot.backup.volumes.db.path: "backup.sql"
         backupbot.restore.post-hook: '/pg_backup.sh restore'
-        backupbot.backup.volumes.redis: false
+        backupbot.backup.volumes.redis: "false"
 ```
 
 - `backupbot.backup` -- set to `true` to back up this service (REQUIRED)
diff --git a/pg_backup.sh b/pg_backup.sh
new file mode 100644
index 0000000..4029803
--- /dev/null
+++ b/pg_backup.sh
@@ -0,0 +1,34 @@
+#!/bin/bash
+
+set -e
+
+BACKUP_FILE='/var/lib/postgresql/data/backup.sql'
+
+function backup {
+  export PGPASSWORD=$(cat $POSTGRES_PASSWORD_FILE)
+  pg_dump -U ${POSTGRES_USER} ${POSTGRES_DB} > $BACKUP_FILE
+}
+
+function restore {
+    cd /var/lib/postgresql/data/
+    restore_config(){
+        # Restore allowed connections
+        cat pg_hba.conf.bak > pg_hba.conf
+        su postgres -c 'pg_ctl reload'
+    }
+    # Don't allow any other connections than local
+    cp pg_hba.conf pg_hba.conf.bak
+    echo "local all all trust" > pg_hba.conf
+    su postgres -c 'pg_ctl reload'
+    trap restore_config EXIT INT TERM
+
+    # Recreate Database
+    psql -U ${POSTGRES_USER} -d postgres -c "DROP DATABASE ${POSTGRES_DB} WITH (FORCE);" 
+    createdb -U ${POSTGRES_USER} ${POSTGRES_DB}
+    psql -U ${POSTGRES_USER} -d ${POSTGRES_DB} -1 -f $BACKUP_FILE
+
+    trap - EXIT INT TERM
+    restore_config
+}
+
+$@