This post objective is to find out the stats of running container, system information related to space used by images and containers on /var/lib/docker.
1. ‘docker stats‘ command used to check the containers stats on system like CPU usage, IO usage, Memory usage. Below example is for 2 running containers dockerweb and webserver2.
# docker stats dockerweb webserver2 CONTAINER ID NAME CPU % MEM USAGE / LIMIT MEM % NET I/O BLOCK I/O PIDS e33f00e0e3ce dockerweb 0.00% 7.934MiB / 975.9MiB 0.81% 2.64kB / 0B 14.5MB / 0B 9 ab9e9c22b93c webserver2 0.00% 6.98MiB / 975.9MiB 0.72% 1.87kB / 0B 13.1MB / 0B 6
2. ‘docker system df‘ command is used to check number of docker images and containers on system with space usage.
# docker system df TYPE TOTAL ACTIVE SIZE RECLAIMABLE Images 6 4 1.415GB 237.3MB (16%) Containers 9 1 407.2MB 407.2MB (99%) Local Volumes 0 0 0B 0B Build Cache 0 0 0B 0B