Feat backup creation

Dockerfile

@@ -8,6 +8,7 @@ ENV SQL_SCRIPTS_DIR=${CONFIG_DIR}/sql
 ENV MYSQL_CLIENT_CONFIG=/etc/mysql/my.cnf
 ENV CUSTOM_CLIENT_CONFIG=${CONFIG_DIR}/my.cnf
 ENV APP_SCRIPTS_DIR=${CONFIG_DIR}/scripts
+ENV BACKUP_DIR=${CONFIG_DIR}/backups
 ENV USER=mysql-user
 
 # Update and Install myslq-client
@@ -25,6 +26,11 @@ RUN chmod +x *.sh \
     && chgrp ${USER} ${MYSQL_CLIENT_CONFIG} \
     && chmod g+rw ${MYSQL_CLIENT_CONFIG}
 
+# Install minio client
+RUN wget https://dl.min.io/client/mc/release/linux-amd64/mc \
+    && chmod +x mc \
+    && mv mc /usr/local/bin
+
 USER ${USER}
 WORKDIR ${SQL_SCRIPTS_DIR}
 

README.md

@@ -118,6 +118,28 @@ Available Environmental Variables at the moment will be listed below.
 | `ACTION_DATABASE_NAME`        | any                   | _N/A_                 | Name of database to create or drop.                                   |
 
 
+**Backup variables**
+| Variable Name          | Options               | Default        | Description                                                                         |
+|------------------------|-----------------------|----------------|-------------------------------------------------------------------------------------|
+| `BACKUP_ENABLED`       | yes,no                | no             | Backups MySQL.                                                                      |
+| `BACKUP_NAME`          | any (optional)        | _N/A_          | Set backup file name.                                                               |
+| `BACKUP_TYPE`          | full,database,table   | full           | Specify backup targe type.                                                          |
+| `BACKUP_DATABASE_NAME` | any                   | _N/A_          | Name of the DB to backup. Comma separate if mulyiple of them. e.g db1,db2...        |
+| `BACKUP_TABLE_NAME`    | any                   | _N/A_          | Name of the table to backup. Comma separate if mulyiple of them. e.g tab1,tab2...   |
+| `BACKUP_TO_S3`         | yes,no                | no             | Use S3 for backups. S3 variables must be set to this work.                          |
+
+
+**S3 variables**
+| Variable Name           | Options              | Default               | Description                                                                   |
+|-------------------------|----------------------|-----------------------|-------------------------------------------------------------------------------|
+| `S3_ENDPOINT`           | any (FQDN like)      | _N/A_                 | S3 endpoint name in a FQDN format.                                            |
+| `S3_REGION`             | any                  | us-east-2             | S3 region name.                                                               |
+| `S3_BUCKET`             | any                  | _N/A_                 | S3 Bucket name.                                                               |
+| `S3_FOLDER`             | any (optional)       | _N/A_                 | S3 folder inside Bucket.                                                      |
+| `S3_ACCESS_KEY`         | any                  | _N/A_                 | S3 Access Key.                                                                |
+| `S3_SECRET_KEY`         | any                  | _N/A_                 | S3 Secret Key.                                                                |
+| `S3_SSL`                | yes,no               | yes                   | Specifies if SSL should be used for the endpoint connection (recommended).    |
+
 **Others variables**
 | Variable Name              | Options    | Default       | Description                     |
 |----------------------------|------------|---------------|---------------------------------|

src/backup.sh

@@ -0,0 +1,64 @@
+#!/bin/bash
+
+# Select Backup type
+if [ $BACKUP_TYPE ]; then
+    echo "Running backup type: $BACKUP_TYPE"
+    backup_signature = ${BACKUP_NAME:-$(date +%Y-%m-%d_%s)}
+    backup_name = 'backup_'
+
+
+    echo "Creating backup directory..."
+    mkdir -p $BACKUP_DIR
+
+    case ${BACKUP_TYPE} in
+        "full")
+            echo "Running full backup..."
+            echo "Creating backup file..."
+            backup_name=${BACKUP_NAME:-"mysql-bkf_${backup_signature}.sql.gz"}
+            mysqldump --defaults-extra-file=$MYSQL_CLIENT_CONFIG --all-databases > $BACKUP_DIR/$backup_name
+            echo "Backup created."
+            ;;
+        "database")
+            echo "Running database backup..."
+            echo "Creating backup file..."
+            backup_name=${BACKUP_NAME:-"mysql-bkd_${backup_signature}.sql.gz"}
+            databases=$(echo $BACKUP_DATABASE_NAME | tr "," " ")
+            mysqldump --defaults-extra-file=$MYSQL_CLIENT_CONFIG --databases $databases > $BACKUP_DIR/$backup_name
+            echo "Backup created."
+            ;;
+        "table")
+            echo "Running table backup..."
+            echo "Creating backup file..."
+            database=$(echo "$BACKUP_DATABASE_NAME" | cut -d',' -f1)
+            tables=$(echo $BACKUP_TABLE_NAME | tr "," " ")
+            backup_name=${BACKUP_NAME:-"mysql-bkt_${backup_signature}.sql.gz"}
+            mysqldump --defaults-extra-file=$MYSQL_CLIENT_CONFIG $database $tables > $BACKUP_DIR/$backup_name
+            echo "Backup created."
+            ;;
+        *)
+            echo "Unknown Backup type: $BACKUP_TYPE"
+            exit 1
+            ;;
+    esac
+else 
+    echo "No backup type selected. Skipping..."
+    exit 1
+fi
+
+# Select backup file system
+if [ $BACKUP_TO_S3 == 'yes' ]; then
+    echo "Backing up to S3..."
+
+    if [ $S3_SSL != 'yes' ]; then
+        S3_SSL_FLAG="--insecure"
+    else
+        S3_SSL_FLAG=""
+    fi
+
+    alias_name='db_backup'
+
+    # Add S3 alias
+    mc alias set $alias_name "$S3_ENDPOINT" "$S3_ACCESS_KEY" "$S3_SECRET_KEY" --api "s3v4" $S3_SSL_FLAG
+
+    mc cp $BACKUP_DIR $alias_name/$S3_FOLDER            
+fi

src/entrypoint.sh

@@ -67,4 +67,9 @@ if [ $ACTION_USER ]; then
     esac
 fi
 
+if [ $BACKUP_ENABLED == 'yes' ]; then
+    echo "Running backup..."
+    $APP_SCRIPTS_DIR/backup.sh
+fi
+
 exit 0;