How can I monitor how much resources all containers are using on RHEL 8?

How can I monitor how much resources all containers are using on RHEL 8?

 SOLUTION IN PROGRESS - 已更新 2019年三月1日07:38 - 

​​English ​​

環境

• Red Hat Enterprise Linux 8

問題

• I need to see how much resources every running container on a RHEL 8 system is using.
• How can I monitor CPU, memory, disk, and network resources containers are using in real time?

決議

• Use ​

  ​podman stats​

  ​ to view real-time resource consumption for containers running on RHEL 8.

• Using the ​

  ​--all​

  ​ option provides output for all running containers
• Using ​

  ​--no-stream​

  ​ will do a 1-second poll, report the container's resource details and then exit, otherwise ​

  ​podman stats​

  ​ will continue to poll until interrupted.

# podman stats --all --no-stream
ID             NAME               CPU %   MEM USAGE / LIMIT   MEM %   NET IO              BLOCK IO     PIDS
810ad5d7bf99   fervent_thompson   --      876.5kB / 500.2MB   0.18%   1.048kB / 1.186kB   340kB / 0B   1