GuillaumeHemmen/docker-mysql-cron-backup
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merge PR #14 from alancnet/master

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Enhancements
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Fco. Javier Delgado del Hoyo 2018-04-27 09:06:35 +02:00 committed by GitHub
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2 changed files with 4 additions and 3 deletions
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1
README.md
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@ -20,6 +20,7 @@ This docker image runs mysqldump to backup your databases periodically using cro
MYSQL_USER the username of your mysql database MYSQL_USER the username of your mysql database
MYSQL_PASS the password of your mysql database MYSQL_PASS the password of your mysql database
MYSQL_DB the database name to dump. Default: `--all-databases` MYSQL_DB the database name to dump. Default: `--all-databases`
MYSQLDUMP_OPTS command line arguments to pass to mysqldump. Example: `--single-transaction`
CRON_TIME the interval of cron job to run mysqldump. `0 0 * * *` by default, which is every day at 00:00 CRON_TIME the interval of cron job to run mysqldump. `0 0 * * *` by default, which is every day at 00:00
MAX_BACKUPS the number of backups to keep. When reaching the limit, the old backup will be discarded. No limit by default 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_BACKUP if set, create a backup when the container starts

6
backup.sh
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@ -1,17 +1,17 @@
#!/bin/bash #!/bin/bash
[ -z "${MYSQL_USER}" ] && { echo "=> MYSQL_USER cannot be empty" && exit 1; } [ -z "${MYSQL_USER}" ] && { echo "=> MYSQL_USER cannot be empty" && exit 1; }
[ -z "${MYSQL_PASS}" ] && { echo "=> MYSQL_PASS cannot be empty" && exit 1; } [ -z "${MYSQL_PASS:=$MYSQL_PASSWORD}" ] && { echo "=> MYSQL_PASS cannot be empty" && exit 1; }
DATE=$(date +%Y%m%d%H%M) DATE=$(date +%Y%m%d%H%M)
echo "=> Backup started at $DATE" echo "=> Backup started at $DATE"
databases=$(mysql -h "$MYSQL_HOST" -P "$MYSQL_PORT" -u "$MYSQL_USER" -p"$MYSQL_PASS" -e "SHOW DATABASES;" | tr -d "| " | grep -v Database) databases=${MYSQL_DATABASE:-${MYSQL_DB:-$(mysql -h "$MYSQL_HOST" -P "$MYSQL_PORT" -u "$MYSQL_USER" -p"$MYSQL_PASS" -e "SHOW DATABASES;" | tr -d "| " | grep -v Database)}}
for db in $databases for db in $databases
do do
if [[ "$db" != "information_schema" ]] && [[ "$db" != "performance_schema" ]] && [[ "$db" != "mysql" ]] && [[ "$db" != _* ]] if [[ "$db" != "information_schema" ]] && [[ "$db" != "performance_schema" ]] && [[ "$db" != "mysql" ]] && [[ "$db" != _* ]]
then then
echo "Dumping database: $db" echo "Dumping database: $db"
FILENAME=/backup/$DATE.$db.sql FILENAME=/backup/$DATE.$db.sql
if mysqldump -h "$MYSQL_HOST" -P "$MYSQL_PORT" -u "$MYSQL_USER" -p"$MYSQL_PASS" --databases "$db" > "$FILENAME" if mysqldump -h "$MYSQL_HOST" -P "$MYSQL_PORT" -u "$MYSQL_USER" -p"$MYSQL_PASS" --databases "$db" $MYSQLDUMP_OPTS > "$FILENAME"
then then
gzip -f "$FILENAME" gzip -f "$FILENAME"
else else