mysql backup

README.md

@@ -11,6 +11,7 @@ Collection of lightweight and ready-to-use docker images
 * **[Jekyll](https://github.com/schickling/dockerfiles/tree/master/jekyll)** - Lightweight jekyll working environment
 * **[Latex](https://github.com/schickling/dockerfiles/tree/master/latex)** - Full texlive distribution
 * **[Mailcatcher](https://github.com/schickling/dockerfiles/tree/master/mailcatcher)** - Extra small mailcatcher image
+* **[mysql-backup-s3](https://github.com/schickling/dockerfiles/tree/master/mysql-backup-s3)** - Backup MySQL to S3 (supports periodic backups)
 * **[NodeJS](https://github.com/schickling/dockerfiles/tree/master/nodejs)** - Minimal NodeJS + NPM image
 * **[Octave](https://github.com/schickling/dockerfiles/tree/master/octave)** - Lightweight ocatve development environment
 * **[OpenCV](https://github.com/schickling/dockerfiles/tree/master/opencv)** - Lightweight ready-to use OpenCV image

mysql-backup-s3/Dockerfile

@@ -0,0 +1,23 @@
+FROM alpine:3.1
+MAINTAINER Johannes Schickling "schickling.j@gmail.com"
+
+ADD install.sh install.sh
+RUN sh install.sh && rm install.sh
+
+ENV MYSQLDUMP_OPTIONS --quote-names --quick --add-drop-table --add-locks --allow-keywords --disable-keys --extended-insert --single-transaction --create-options --comments --net_buffer_length=16384
+ENV MYSQLDUMP_DATABASE --all-databases
+ENV MYSQL_HOST **None**
+ENV MYSQL_PORT 3306
+ENV MYSQL_USER **None**
+ENV MYSQL_PASSWORD **None**
+ENV S3_ACCESS_KEY_ID **None**
+ENV S3_SECRET_ACCESS_KEY **None**
+ENV S3_BUCKET **None**
+ENV S3_PATH 'backup'
+ENV S3_REGION us-west-1
+ENV SCHEDULE **None**
+
+ADD run.sh run.sh
+ADD backup.sh backup.sh
+
+CMD ["sh", "run.sh"]

mysql-backup-s3/README.md

@@ -0,0 +1,15 @@
+# mysql-backup-s3
+
+Backup MySQL to S3 (supports periodic backups)
+
+## Usage
+
+```sh
+$ docker run -e S3_ACCESS_KEY_ID=key -e S3_SECRET_ACCESS_KEY=secret -e S3_BUCKET=my-bucket -e S3_PREFIX=backup -e MYSQL_USER=user -e MYSQL_PASSWORD=password -e MYSQL_HOST=localhost schickling/mysql-backup-s3
+```
+
+### Automatic Periodic Backups
+
+You can additionally set the `SCHEDULE` environment variable like `-e SCHEDULE="@daily"` to run the backup automatically.
+
+More information about the scheduling can be found [here](http://godoc.org/github.com/robfig/cron#hdr-Predefined_schedules).

mysql-backup-s3/backup.sh

@@ -0,0 +1,50 @@
+#! /bin/sh
+
+set -e
+
+if [ "${S3_ACCESS_KEY_ID}" = "**None**" ]; then
+  echo "You need to set the S3_ACCESS_KEY_ID environment variable."
+  exit 1
+fi
+
+if [ "${S3_SECRET_ACCESS_KEY}" = "**None**" ]; then
+  echo "You need to set the S3_SECRET_ACCESS_KEY environment variable."
+  exit 1
+fi
+
+if [ "${S3_BUCKET}" = "**None**" ]; then
+  echo "You need to set the S3_BUCKET environment variable."
+  exit 1
+fi
+
+if [ -z "${MYSQL_HOST}" ]; then
+  echo "You need to set the MYSQL_HOST environment variable."
+  exit 1
+fi
+
+if [ -z "${MYSQL_USER}" ]; then
+  echo "You need to set the MYSQL_USER environment variable."
+  exit 1
+fi
+
+if [ -z "${MYSQL_PASSWORD}" ]; then
+  echo "You need to set the MYSQL_PASSWORD environment variable or link to a container named MYSQL."
+  exit 1
+fi
+
+# env vars needed for aws tools
+export AWS_ACCESS_KEY_ID=$S3_ACCESS_KEY_ID
+export AWS_SECRET_ACCESS_KEY=$S3_SECRET_ACCESS_KEY
+export AWS_DEFAULT_REGION=$S3_REGION
+
+MYSQL_HOST_OPTS="-h $MYSQL_HOST --port $MYSQL_PORT -u $MYSQL_USER -p$MYSQL_PASSWORD"
+
+echo "Creating dump of ${MYSQLDUMP_DATABASE} database(s) from ${MYSQL_HOST}..."
+
+mysqldump $MYSQL_HOST_OPTS $MYSQLDUMP_OPTIONS $MYSQLDUMP_DATABASE | gzip > dump.sql.gz
+
+echo "Uploading dump to $S3_BUCKET"
+
+cat dump.sql.gz | aws s3 cp - s3://$S3_BUCKET/$S3_PREFIX/$(date +"%Y")/$(date +"%m")/$(date +"%d").sql.gz || exit 2
+
+echo "SQL backup uploaded successfully"

mysql-backup-s3/install.sh

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+#! /bin/sh
+
+# exit if a command fails
+set -e
+
+
+apk update
+
+# install mysqldump
+apk add mysql-client
+
+# install s3 tools
+apk add python py-pip
+pip install awscli
+apk del py-pip
+
+# install go-cron
+apk add curl
+curl -L --insecure https://github.com/odise/go-cron/releases/download/v0.0.6/go-cron-linux.gz | zcat > /usr/local/bin/go-cron
+chmod u+x /usr/local/bin/go-cron
+apk del curl
+
+
+# cleanup
+rm -rf /var/cache/apk/*

mysql-backup-s3/run.sh

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+#! /bin/sh
+
+set -e
+
+if [ "${SCHEDULE}" = "**None**" ]; then
+  sh backup.sh
+else
+  exec go-cron "$SCHEDULE" /bin/sh backup.sh
+fi