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Propagate Medusa process exit code in k8s docker-entrypoint #806

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merged 1 commit into from
Sep 23, 2024
Merged

Propagate Medusa process exit code in k8s docker-entrypoint #806

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17 changes: 11 additions & 6 deletions k8s/docker-entrypoint.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -11,12 +11,12 @@ set -e
echo "MEDUSA_MODE = $MEDUSA_MODE"

restore() {
# The BACKUP_NAME and RESTORE_KEY env vars have to be set in order for a
# The BACKUP_NAME and RESTORE_KEY env vars have to be set in order for a
# restore to be performed. BACKUP_NAME specifies the backup to restore.
# RESTORE_KEY is written out to a file after the restore completes. We
# compare the value in the file to RESTORE_KEY. We perform a restore if the
# the file does not exist or if the values differ.

echo "Running Medusa in restore mode"
last_restore_file=/var/lib/cassandra/.last-restore

Expand All @@ -38,7 +38,7 @@ restore() {
fi

if [ "$restore_key" == "$RESTORE_KEY" ]; then
echo "Skipping restore operation"
echo "Skipping restore operation"
else
echo "Restoring backup $BACKUP_NAME"
poetry run python -m medusa.service.grpc.restore -- "/etc/medusa/medusa.ini" $RESTORE_KEY
Expand All @@ -53,20 +53,25 @@ grpc() {
exec poetry run python -m medusa.service.grpc.server server.py &
MEDUSA_PID=$!

while true; do
# Loop while Medusa process is running
while kill -0 "$MEDUSA_PID" 2>/dev/null; do
CURRENT_DIGEST=$(md5sum /etc/medusa/medusa.ini | awk '{print $1}')
if [ "$ORIGINAL_MEDUSA_INI_DIGEST" != "$CURRENT_DIGEST" ]; then
echo "Detected change in medusa.ini, checking for running backups"
if ! [ -f /tmp/medusa_backup_in_progress ]; then
echo "No backups in progress, stopping Medusa"
kill $MEDUSA_PID
break
# Always exit with 0 on config change.
exit 0
else
echo "Backup in progress, postponing restart restart"
echo "Backup in progress, postponing restart"
fi
fi
sleep 5
done

# Exit with the Medusa process exit code.
wait "$MEDUSA_PID"
}

echo "sleeping for $DEBUG_SLEEP sec"
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