How to monitor the running status of docker container shell script

Scenario

The company project is deployed in Docker. Due to unknown reasons, the container occasionally stops. It is necessary to write a script to monitor the running status of the container. If the container stops, start the container again.

Shell Script

#!/bin/bash
# Pass in the container name containerName=$1
currTime=`date +"%Y-%m-%d %H:%M:%S"`
# Check if the process exists=`docker inspect --format '{{.State.Running}}' ${containerName}`
if [ "${exist}" != "true" ]; then
 docker start ${containerName}
 # Record echo "${currTime} restart docker container, container name: ${containerName}" >> /mnt/xvde1/ms_ctynyd/scripts/wbwf_monitor.log
 
fi

Scheduled tasks crontab

crontab -e to edit Linux scheduled tasks

# Monitor docker 8081 container*/1 * * * * sh /mnt/xvde1/ms_ctynyd/scripts/wbwf_monitor.sh server_wbwf_wbwf-app_1
# Monitor docker 7081 container*/1 * * * * sh /mnt/xvde1/ms_ctynyd/scripts/wbwf_monitor.sh server_hb_hb-test-app_1

Supplement: Shell script determines whether a service is running

Shell script to determine whether a service is enabled

The script is as follows:

#!/bin/bash
#Check the service status to see if it is installed read -p "Please enter the service to be tested:" SERVICE
netstat -anp | grep $SERVICE &> /dev/null
if [ $? -eq 0 ]
then
  echo "$SERVICE service has been started!"
else
  rpm -q $SERVICE &> /dev/null
 
  if [ $? -eq 0 ]
  then
 echo "$SERVICE service has been installed and is starting...."
    service $SERVICE start
  else
 echo "The service is not installed!"
 fi
fi

The results are as follows:

The above is my personal experience. I hope it can give you a reference. I also hope that you will support 123WORDPRESS.COM. If there are any mistakes or incomplete considerations, please feel free to correct me.

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