adding postgresql backup script

asgard/k0s.md

@@ -0,0 +1,13 @@
+# [asgard] K0S
+
+## Installation
+
+`curl -sSLf https://get.k0s.sh | sudo K0S_VERSION=v1.29.4+k0s.0 sh`
+
+`sudo mkdir /etc/k0s`
+
+`sudo k0s config create | sudo tee /etc/k0s/k0s.yml`
+
+`sudo k0s install controller --data-dir /data/k0s --single -c /etc/k0s/k0s.yml`
+
+`sudo k0s start`

asgard/storage.md

@@ -0,0 +1,43 @@
+# [asgard] Stockage
+
+## Schéma de partitionnement cible
+- **vda** (disque système cloud-init) 10G
+    - vda14 (BIOS boot)
+    - vda15 (EFI)
+    - vda1 (partition racine /)
+
+- **vdb** (disque secondaire LVM) 5G
+
+### Schéma de partitionnement LVM
+- **data** (LVM volume group) : **vdb**
+    - **k0s** (LVM logical volume) : 5G
+
+## Initialisation LVM pour le disque secondaire
+Création du *physical volume* **vdb**
+
+`sudo pvcreate /dev/vdb`
+
+Création du *volume groupe* **data**
+
+`sudo vgcreate data /dev/vdb`
+
+Création du *logical volume* **k0s**
+
+`sudo lvcreate -l+100%FREE -n k0s data`
+
+### Formatage et montage des volumes de données
+Formatage du volume en EXT4
+
+`sudo mkfs.ext4 /dev/data/k0s`
+
+Création des répertoires `/data/k0s`
+
+`sudo mkdir -p /data/k0s`
+
+Montage des volumes. Via `/etc/fstab`
+
+```
+/dev/data/k0s /data/k0s ext4 rw,discard,errors=remount-ro 0 1
+```
+
+`sudo mount /data/k0s`

midgard/backup/install

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+#!/bin/sh
+
+set -e
+
+BASEDIR=$(dirname "$0")
+
+install -o root -g root -m 755 "$BASEDIR/mkpsqlbackup" /usr/local/bin/mkpsqlbackup
+install -o root -g root -m 644 "$BASEDIR/mkpsqlbackup.conf" /etc/mkpsqlbackup.conf
+install -o root -g root -m 644 "$BASEDIR/mkpsqlbackup.service" /etc/systemd/system/mkpsqlbackup.service
+install -o root -g root -m 644 "$BASEDIR/mkpsqlbackup.timer" /etc/systemd/system/mkpsqlbackup.timer

midgard/backup/mkpsqlbackup

@@ -0,0 +1,35 @@
+#!/bin/sh
+
+set -e
+
+# Default configuration
+DATABASES=''
+BACKUP_DIR=/data/backup/postgresql
+RETENTION_DAYS=7
+
+if ! source /etc/mkpsqlbackup.conf ; then
+	echo '[MKPSQLBACKUP] : Unable to load configuration file' >&2
+	exit 1
+fi
+
+if [ "$(id -un)" != 'postgres' ] ; then
+	echo '[MKPSQLBACKUP] : This script must be run as postgres user' >&2
+	exit 2
+fi
+
+FINAL_BACKUP_DIR="$BACKUP_DIR/-$(date '+%Y-%m-%d')"
+echo "[MKPSQLBACKUP] : Creating backup directory $FINAL_BACKUP_DIR"
+if ! mkdir -p "$FINAL_BACKUP_DIR" ; then
+	echo "[MKPSQLBACKUP] : Unable to create backup directory $FINAL_BACKUP_DIR"
+	exit 3
+fi
+
+for db in DATABASES ; do
+	echo "[MKPSQLBACKUP] : Backup of $db"
+	if ! pg_dump -Fc "$db" -f "$FINAL_BACKUP_DIR/$db" ; then
+		echo "[MKPSQLBACKUP] : Unable to backup database $db" >&2
+	fi
+done
+
+echo '[MKPSQLBACKUP] : Purging old backups'
+find "$BACKUP_DIR" -maxdepth 1 mindepth 1 -mtime +"$RETENTION_DAYS" -exec rm -rf '{}' ';'

midgard/backup/mkpsqlbackup.conf

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+DATABASES=''
+BACKUP_DIR=/data/backup/postgresql
+RETENTION_DAYS=7

midgard/backup/mkpsqlbackup.service

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+[Unit]
+Description=Performing PostgreSQL database backups
+
+[Service]
+ExecStart=/usr/local/bin/mkpsqlbackup

midgard/backup/mkpsqlbackup.timer

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+[Unit]
+Description=Performing PostgreSQL database backups every days at 3:00am
+
+[Timer]
+# Run every days at 3:00am
+OnCalendar=*-*-* 3:00:00
+Persistent=true
+
+[Install]
+WantedBy=timers.target

midgard/postgresql.md

@@ -0,0 +1,21 @@
+# [midgard] PostgreSQL
+
+## Installation
+
+`sudo curl -o /etc/apt/trusted.gpg.d/pgdg.asc https://www.postgresql.org/media/keys/ACCC4CF8.asc`
+
+`echo "deb [signed-by=/etc/apt/trusted.gpg.d/pgdg.asc] https://apt.postgresql.org/pub/repos/apt $(lsb_release -cs)-pgdg main" | sudo tee /etc/apt/sources.list.d/pgdg.list`
+
+`sudo apt update`
+
+`sudo apt install postgresql-16`
+
+## Configuration
+
+`sudo chown postgres:postgres /data/pgdata /data/pglog`
+
+`sudo pg_dropcluster --stop 16 main`
+
+`sudo pg_createcluster -d /data/pgdata/16/midgard -l /data/pglog/postgresql-16-midgard.log 16 midgard`
+
+`sudo pg_ctlcluster start 16 midgard`

midgard/storage.md

@@ -6,12 +6,13 @@
     - vda15 (EFI)
     - vda1 (partition racine /)
 
-- **vdb** (disque secondaire LVM) 5G
+- **vdb** (disque secondaire LVM) 6G
 
 ### Schéma de partitionnement LVM
 - **data** (LVM volume group) : **vdb**
     - **pgdata** (LVM logical volume) : 4G
     - **pglog** (LVM logical volume) : 1G
+    - **backup** (LVM logical volume) : 1G
 
 
 ## Initialisation LVM pour le disque secondaire
@@ -23,11 +24,13 @@ Création du *volume groupe* **data**
 
 `sudo vgcreate data /dev/vdb`
 
-Création des *logical volumes* **pgdata** et **pglog**
+Création des *logical volumes* **pgdata**, **pglog** et **backup**
 
 `sudo lvcreate -L 4G -n pgdata data`
 
-`sudo lvcreate -l+100%FREE -n pglog data`
+`sudo lvcreate -L 1G -n pglog data`
+
+`sudo lvcreate -l+100%FREE -n backup data`
 
 ### Formatage et montage des volumes de données
 Formatage les deux volumes en EXT4
@@ -36,17 +39,22 @@ Formatage les deux volumes en EXT4
 
 `sudo mkfs.ext4 /dev/data/pgdata`
 
-Création des répertoires `/data/pgdata` et `/data/pglog`
+`sudo mkfs.ext4 /dev/data/backup`
 
-`sudo mkdir -p /data/pgdata /data/pglog`
+Création des répertoires `/data/pgdata`, `/data/pglog` et `/data/backup`
+
+`sudo mkdir -p /data/pgdata /data/pglog /data/backup`
 
 Montage des volumes. Via `/etc/fstab`
 
 ```
-/dev/data/pgdata /data/pgdata ext4 rw,discard,errors=remount-ro,x-systemd.growfs 0 1
+/dev/data/pgdata /data/pgdata ext4 rw,discard,errors=remount-ro 0 1
-/dev/data/pglog /data/pglog ext4 rw,discard,errors=remount-ro,x-systemd.growfs 0 1
+/dev/data/pglog /data/pglog ext4 rw,discard,errors=remount-ro 0 1
+/dev/data/backup /data/backup ext4 rw,discard,errors=remount-ro 0 1
 ```
 
 `sudo mount /data/pgdata`
 
 `sudo mount /data/pglog`
+
+`sudo mount /data/backup`