Check Queues Health Redis Docker Containers

check-redis-queues-containers.sh

#!/bin/bash

## Check Queues Health Redis Docker Containers
# if your have many redis containers with queue processing, this script can help you
# when any application worker stop or have delayed, this script can send mail for you with this information

sendTo="email@email.com"
lengthToWarning="10"

docker ps | grep redis | awk '{print $1}' | while read container; do

  queues=$(echo 'keys *' | xargs docker exec $container redis-cli | grep queue | grep -v reserved)
  queuesCount=$(echo 'keys *' | xargs docker exec $container redis-cli | grep queue | wc -l)
  queuesArray=$(echo $queues | tr " ", "\n")

  for queue in $queuesArray; do
    queueLength=$(echo llen $queue | xargs docker exec $container redis-cli)
    if [ "$queueLength" -gt "$lengthToWarning" ]; then

      containerName=$(docker ps --format="{{.ID}} {{.Names}}" | grep $container | awk '{print $2}')

      echo "Queues Redis: $containerName: $queue have  $queueLength itens to processed, its normal?." >> tmpQueueChecker

    fi
  done

done

TOTAL=$(cat tmpQueueChecker | uniq | wc -l)
if [[ "$TOTAL" -gt "0" ]]; then
  cat tmpQueueChecker | mutt -s "Warning - Many Queues Waiting Process" $sendTo
  rm tmpQueueChecker
fi