Problem: MySQL 5.7 is down.

MySQL server is shutdown unexpectedly once a month. It happened when we updated MySQL to 5.7.24. In the/var/mysql.log, the following logs are shown. What is wrong?

2020-07-09T05:54:41.056589Z 0 Giving 0 client threads a chance to die gracefully2020-07-09T05:54:41.05 ...


Port Forwarding Feature on Docker

As you know, on Docker, you can set port forwarding between host server and containers with the following command.

$ docker container run -p :

Example: Create Nginx container. In this case the packets coming to 80 port on the host server will be forwarded to ...