offen/docker-volume-backup
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make log output more consistent

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This commit is contained in:
Frederik Ring 2021-04-03 09:33:11 +02:00
parent 17a3523ded
commit 204a0862c6
3 changed files with 16 additions and 15 deletions
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2
README.md
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@ -28,7 +28,7 @@ AWS_SECRET_ACCESS_KEY="<xxx>"
AWS_S3_BUCKET_NAME="<xxx>" AWS_S3_BUCKET_NAME="<xxx>"
# This is the FQDN of your storage server, e.g. `storage.example.com`. # This is the FQDN of your storage server, e.g. `storage.example.com`.
# You can leave it blank when working against AWS S3. # Do not set this when working against AWS S3.
# AWS_ENDPOINT="<xxx>" # AWS_ENDPOINT="<xxx>"
########### BACKUP PRUNING ########### BACKUP PRUNING

25
src/backup.sh
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@ -12,7 +12,7 @@ function info {
echo -e "\n[INFO] $1\n" echo -e "\n[INFO] $1\n"
} }
info "Backup starting" info "Preparing backup"
DOCKER_SOCK="/var/run/docker.sock" DOCKER_SOCK="/var/run/docker.sock"
if [ -S "$DOCKER_SOCK" ]; then if [ -S "$DOCKER_SOCK" ]; then
@ -25,12 +25,12 @@ if [ -S "$DOCKER_SOCK" ]; then
CONTAINERS_TO_STOP_TOTAL="$(cat $TEMPFILE | wc -l)" CONTAINERS_TO_STOP_TOTAL="$(cat $TEMPFILE | wc -l)"
CONTAINERS_TOTAL="$(docker ps --format "{{.ID}}" | wc -l)" CONTAINERS_TOTAL="$(docker ps --format "{{.ID}}" | wc -l)"
rm "$TEMPFILE" rm "$TEMPFILE"
echo "$CONTAINERS_TOTAL containers running on host in total" echo "$CONTAINERS_TOTAL containers running on host in total."
echo "$CONTAINERS_TO_STOP_TOTAL containers marked to be stopped during backup" echo "$CONTAINERS_TO_STOP_TOTAL containers marked to be stopped during backup."
else else
CONTAINERS_TO_STOP_TOTAL="0" CONTAINERS_TO_STOP_TOTAL="0"
CONTAINERS_TOTAL="0" CONTAINERS_TOTAL="0"
echo "Cannot access \"$DOCKER_SOCK\", won't look for containers to stop" echo "Cannot access \"$DOCKER_SOCK\", won't look for containers to stop."
fi fi
if [ "$CONTAINERS_TO_STOP_TOTAL" != "0" ]; then if [ "$CONTAINERS_TO_STOP_TOTAL" != "0" ]; then
@ -57,9 +57,9 @@ fi
if [ ! -z "$AWS_S3_BUCKET_NAME" ]; then if [ ! -z "$AWS_S3_BUCKET_NAME" ]; then
info "Uploading backup to remote storage" info "Uploading backup to remote storage"
echo "Will upload to bucket \"$AWS_S3_BUCKET_NAME\"" echo "Will upload to bucket \"$AWS_S3_BUCKET_NAME\"."
mc cp "$BACKUP_FILENAME" "backup-target/$AWS_S3_BUCKET_NAME" mc cp "$BACKUP_FILENAME" "backup-target/$AWS_S3_BUCKET_NAME"
echo "Upload finished" echo "Upload finished."
fi fi
if [ -f "$BACKUP_FILENAME" ]; then if [ -f "$BACKUP_FILENAME" ]; then
@ -68,7 +68,7 @@ if [ -f "$BACKUP_FILENAME" ]; then
fi fi
info "Backup finished" info "Backup finished"
echo "Will wait for next scheduled backup" echo "Will wait for next scheduled backup."
if [ ! -z "$BACKUP_RETENTION_DAYS" ]; then if [ ! -z "$BACKUP_RETENTION_DAYS" ]; then
info "Pruning old backups" info "Pruning old backups"
@ -76,18 +76,19 @@ if [ ! -z "$BACKUP_RETENTION_DAYS" ]; then
rule_applies_to=$(mc rm --fake --recursive -force --older-than "${BACKUP_RETENTION_DAYS}d" "backup-target/$bucket" | wc -l) rule_applies_to=$(mc rm --fake --recursive -force --older-than "${BACKUP_RETENTION_DAYS}d" "backup-target/$bucket" | wc -l)
if [ "$rule_applies_to" == "0" ]; then if [ "$rule_applies_to" == "0" ]; then
echo "No backups found that match the configured retention period. Doing nothing." echo "No backups found older than the configured retention period of $BACKUP_RETENTION_DAYS days."
echo "Doing nothing."
exit 0 exit 0
fi fi
available=$(mc ls "backup-target/$bucket" | wc -l) total=$(mc ls "backup-target/$bucket" | wc -l)
if [ "$rule_applies_to" == "$available" ]; then if [ "$rule_applies_to" == "$total" ]; then
echo "Using a retention of $BACKUP_RETENTION_DAYS days would prune all currently existing backups, will not continue." echo "Using a retention of ${BACKUP_RETENTION_DAYS} days would prune all currently existing backups, will not continue."
echo "If this is what you want, please remove files manually instead of using this script." echo "If this is what you want, please remove files manually instead of using this script."
exit 1 exit 1
fi fi
mc rm --recursive -force --older-than "${BACKUP_RETENTION_DAYS}d" "backup-target/$bucket" mc rm --recursive -force --older-than "${BACKUP_RETENTION_DAYS}d" "backup-target/$bucket"
echo "Successfully pruned all backups older than ${BACKUP_RETENTION_DAYS} days" echo "Successfully pruned ${rule_applies_to} backups older than ${BACKUP_RETENTION_DAYS} days."
fi fi

4
src/entrypoint.sh
View File

@ -27,9 +27,9 @@ source env.sh
mc alias set backup-target "https://$AWS_ENDPOINT" "$AWS_ACCESS_KEY_ID" "$AWS_SECRET_ACCESS_KEY" mc alias set backup-target "https://$AWS_ENDPOINT" "$AWS_ACCESS_KEY_ID" "$AWS_SECRET_ACCESS_KEY"
# Add our cron entry, and direct stdout & stderr to Docker commands stdout # Add our cron entry, and direct stdout & stderr to Docker commands stdout
echo "Installing cron.d entry with expression $BACKUP_CRON_EXPRESSION" echo "Installing cron.d entry with expression $BACKUP_CRON_EXPRESSION."
echo "$BACKUP_CRON_EXPRESSION backup 2>&1" | crontab - echo "$BACKUP_CRON_EXPRESSION backup 2>&1" | crontab -
# Let cron take the wheel # Let cron take the wheel
echo "Starting cron in foreground" echo "Starting cron in foreground."
crond -f -l 8 crond -f -l 8