.gitignore

@@ -1 +0,0 @@
-*/.env.dist

README.md

@@ -1,13 +1,3 @@
 # scripts
 
 Random scripts for different tasks
-
-## Configuration
-
-If the script provides any configuration, make a copy of `.env.dist` file to `.env` and edit configuration there.
-
-```shell
-cd some_script
-cp .env.dist .env
-nano .env
-```

postgresql_backup/.env.dist

@@ -1,22 +0,0 @@
-# Backup path
-BACKUP_PATH="/path/to/backup/directory"
-
-# Compression levels
-ZSTD_LEVEL=5
-GZIP_LEVEL=7
-
-# Servers configuration
-# Add as many as needed
-
-# Database 1 configuration
-DB1_HOST="localhost"
-DB1_PORT="5432"
-DB1_USER="user1"
-# "custom" for .dump or "sql" for SQL compressed with Gzip
-DB1_DUMP_FORMAT="custom"
-
-# Database 2 configuration
-#DB2_HOST="remote_host"
-#DB2_PORT="5432"
-#DB2_USER="user2"
-#DB2_DUMP_FORMAT="sql"

postgresql_backup/README.md

@@ -1,57 +0,0 @@
-# Usage
-
-## Authentication
-
-Do not forget to create and/or edit `~/.pgpass` file providing all needed passwords for each host:
-
-The format is the following:
-```properties
-hostname:port:database:username:password
-```
-
-Example
-
-```properties
-localhost:5432:*:postgres:pg_password_1
-localhost:5433:*:postgres:pg_password_2
-```
-
-## Scheduling
-
-### Systemd
-
-#### Service
-
-`/etc/systemd/system/postgresql_backup.service`
-
-```ini
-[Unit]
-Description=PostgreSQL backup Script
-
-[Service]
-Type=oneshot
-WorkingDirectory=/root/scripts/postgresql_backup
-ExecStart=/root/scripts/postgresql_backup/pg_backup.sh
-```
-
-#### Timer
-
-`/etc/systemd/system/postgresql_backup.timer`
-
-```ini
-[Unit]
-Description=Run Backup Script Every Night
-
-[Timer]
-OnCalendar=*-*-* 22:00:00
-Unit=postgresql_backup.service
-
-[Install]
-WantedBy=timers.target
-```
-
-Then:
-
-```shell
-systemctl enable postgresql_backup.timer --now
-```

postgresql_backup/pg_backup.sh

@@ -1,77 +1,38 @@
 #!/bin/bash
 
-# Load environment variables from .env file
-if [ -f .env ]; then
-  export $(grep -v '^#' .env | xargs)
-else
-  echo ".env file not found! Please create it with the necessary configuration."
-  exit 1
+# Configuration
+HOST="localhost"
+PORT="5432"
+USER="your_postgres_user"
+BACKUP_PATH="/path/to/backup/directory"
+DUMP_FORMAT="custom" # Set to "custom" for .dump or "sql" for plaintext SQL
+EXTENSION="dump" # Default extension
+
+# Adjust file extension based on dump format
+if [[ "$DUMP_FORMAT" == "sql" ]]; then
+  EXTENSION="sql.gz"
 fi
 
-# Ensure BACKUP_PATH is set
-if [ -z "$BACKUP_PATH" ]; then
-  echo "BACKUP_PATH not set in .env file!"
-  exit 1
-fi
+# Create backup directory if it doesn't exist
+mkdir -p "$BACKUP_PATH"
 
-# Extract unique database prefixes (DB1, DB2, ...)
-DATABASE_PREFIXES=$(env | grep -o 'DB[0-9]*_' | sort -u)
+# Get a list of all databases, excluding template databases
+DATABASES=$(psql -h "$HOST" -p "$PORT" -U "$USER" -d postgres -t -c "SELECT datname FROM pg_database WHERE datistemplate = false;")
 
-# Loop through each database configuration prefix
-for PREFIX in $DATABASE_PREFIXES; do
-  HOST_VAR="${PREFIX}HOST"
-  PORT_VAR="${PREFIX}PORT"
-  USER_VAR="${PREFIX}USER"
-  FORMAT_VAR="${PREFIX}DUMP_FORMAT"
+# Loop over each database and create a backup
+for DB in $DATABASES; do
+  BACKUP_FILE="$BACKUP_PATH/$DB.$EXTENSION"
   
-  HOST=${!HOST_VAR}
-  PORT=${!PORT_VAR}
-  USER=${!USER_VAR}
-  DUMP_FORMAT=${!FORMAT_VAR:-"custom"} # Default to "custom" if not set
-
-  if [ -z "$HOST" ] || [ -z "$PORT" ] || [ -z "$USER" ]; then
-    echo "Incomplete configuration for $PREFIX. Skipping..."
-    continue
-  fi
-
-  # Create a directory for each server using host and port, only if it doesn't exist
-  SERVER_DIR="$BACKUP_PATH/${HOST}_${PORT}"
-  if [ ! -d "$SERVER_DIR" ]; then
-    echo "Creating backup directory: $SERVER_DIR"
-    mkdir -p "$SERVER_DIR"
+  if [[ "$DUMP_FORMAT" == "custom" ]]; then
+    # Create a compressed custom-format backup
+    pg_dump -h "$HOST" -p "$PORT" -U "$USER" -Fc "$DB" -f "$BACKUP_FILE"
+  elif [[ "$DUMP_FORMAT" == "sql" ]]; then
+    # Create a plain-text SQL backup and compress it with gzip
+    pg_dump -h "$HOST" -p "$PORT" -U "$USER" "$DB" | gzip > "$BACKUP_FILE"
   else
-    echo "Backup directory $SERVER_DIR already exists, skipping creation."
+    echo "Invalid DUMP_FORMAT specified: $DUMP_FORMAT"
+    exit 1
   fi
 
-  # Get a list of all databases for this server, excluding template databases
-  echo "Fetching databases for $HOST:$PORT ..."
-  DATABASES=$(psql -h "$HOST" -p "$PORT" -U "$USER" -d postgres -t -c "SELECT datname FROM pg_database WHERE datistemplate = false;")
-
-  # Loop over each database and create a backup
-  for DB_NAME in $DATABASES; do
-    # Set file extension based on DUMP_FORMAT
-    EXTENSION="dump"
-    if [[ "$DUMP_FORMAT" == "sql" ]]; then
-      EXTENSION="sql.gz"
-    fi
-
-    # Set backup file path within the server-specific directory
-    BACKUP_FILE="$SERVER_DIR/$DB_NAME.$EXTENSION"
-
-    echo "Dumping '$DB_NAME' on $HOST:$PORT to $BACKUP_FILE"
-
-    # Perform the backup based on the specified format
-    if [[ "$DUMP_FORMAT" == "custom" ]]; then
-      pg_dump -h "$HOST" -p "$PORT" -U "$USER" -Fc --compress="zstd:$ZSTD_LEVEL" "$DB_NAME" -f "$BACKUP_FILE"
-    elif [[ "$DUMP_FORMAT" == "sql" ]]; then
-      pg_dump -h "$HOST" -p "$PORT" -U "$USER" "$DB_NAME" | gzip -$GZIP_LEVEL > "$BACKUP_FILE"
-    else
-      echo "Invalid DUMP_FORMAT for $PREFIX: $DUMP_FORMAT. Skipping..."
-      continue
-    fi
-
-    du -sh $BACKUP_FILE
-  done
+  echo "Backup for database '$DB' created at '$BACKUP_FILE'"
 done
-
-echo "Backup process completed."