GuillaumeHemmen/docker-mysql-cron-backup
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Merge pull request #2 from fradelg/master

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Manuel 2018-11-12 21:08:28 +01:00 committed by GitHub
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12
Dockerfile
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@ -3,13 +3,19 @@ LABEL maintainer "Fco. Javier Delgado del Hoyo <frandelhoyo@gmail.com>"
COPY ["run.sh", "backup.sh", "restore.sh", "/"]
RUN apk add --update bash mysql-client gzip && rm -rf /var/cache/apk/* && mkdir /backup &&\
RUN apk add --update bash mysql-client gzip openssl && rm -rf /var/cache/apk/* && mkdir /backup &&\
chmod u+x /backup.sh /restore.sh
ENV DOCKERIZE_VERSION v0.6.1
RUN wget https://github.com/jwilder/dockerize/releases/download/$DOCKERIZE_VERSION/dockerize-alpine-linux-amd64-$DOCKERIZE_VERSION.tar.gz \
&& tar -C /usr/local/bin -xzvf dockerize-alpine-linux-amd64-$DOCKERIZE_VERSION.tar.gz \
&& rm dockerize-alpine-linux-amd64-$DOCKERIZE_VERSION.tar.gz
ENV CRON_TIME="0 3 * * sun" \
MYSQL_HOST="mysql" \
MYSQL_PORT="3306"
MYSQL_PORT="3306" \
TIMEOUT="10s"
VOLUME ["/backup"]
CMD ["/run.sh"]
CMD dockerize -wait tcp://${MYSQL_HOST}:${MYSQL_PORT} -timeout ${TIMEOUT} /run.sh

1
README.md
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@ -27,6 +27,7 @@ docker container run -d \
- `MAX_BACKUPS`: The number of backups to keep. When reaching the limit, the old backup will be discarded. No limit by default.
- `INIT_BACKUP`: If set, create a backup when the container starts.
- `INIT_RESTORE_LATEST`: Ff set, restores latest backup.
- `TIMEOUT`: Wait a given number of seconds for the database to be ready and make the first backup, `10s` by default. After that time, the initial attempt for backup gives up and only the Cron job will try to make a backup.
If you want to make this image the perfect companion of your MySQL container, use [docker-compose](https://docs.docker.com/compose/). You can add more services that will be able to connect to the MySQL image using the name `my_mariadb`, note that you only expose the port `3306` internally to the servers and not to the host:

2
backup.sh
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@ -12,7 +12,7 @@ do
echo "Dumping database: $db"
FILENAME=/backup/$DATE.$db.sql
LATEST=/backup/latest.$db.sql.gz
if mysqldump -h "$MYSQL_HOST" -P "$MYSQL_PORT" -u "$MYSQL_USER" -p"$MYSQL_PASS" --databases "$db" $MYSQLDUMP_OPTS > "$FILENAME"
if mysqldump -h "$MYSQL_HOST" -P "$MYSQL_PORT" -u "$MYSQL_USER" -p"$MYSQL_PASS" --databases "$db" "$MYSQLDUMP_OPTS" > "$FILENAME"
then
gzip -f "$FILENAME"
rm "$LATEST" 2> /dev/null