Namespaces Linux

PID namespaces

heth@h5:~$ ps -edalfZ |grep -v -P "unconfined"
LABEL                           F S UID          PID    PPID  C PRI  NI ADDR SZ WCHAN  STIME TTY          TIME CMD
snap.docker.dockerd (enforce)   4 S root       73714       1  0  80   0 - 385638 -     Sep03 ?        00:01:53 dockerd --group docker --exec-root=/run/snap.docker --data-root=/var/snap/docker/common/var-lib-docker --pidfile=/run/snap.docker/docker.pid --config-file=/var/snap/docker/2932/config/daemon.json
snap.docker.dockerd (enforce)   0 S root       73945   73714  0  80   0 - 320637 -     Sep03 ?        00:50:35 containerd --config /run/snap.docker/containerd/containerd.toml --log-level error
/usr/sbin/dhcpd (enforce)       4 S dhcpd     166607       1  0  80   0 - 28778 -      Sep14 ?        00:00:00 dhcpd -user dhcpd -group dhcpd -f -4 -pf /run/dhcp-server/dhcpd.pid -cf /etc/dhcp/dhcpd.conf
/usr/sbin/mysqld (enforce)      4 S mysql     166837       1  0  80   0 - 446461 -     Sep14 ?        00:21:56 /usr/sbin/mysqld
snap.docker.dockerd (enforce)   0 S root      223483       1  0  80   0 - 179891 -     05:20 ?        00:00:00 /snap/docker/2932/bin/containerd-shim-runc-v2 -namespace moby -id 15990ed097e96d0d2e541d1b0655538b4a04108073dd740f7bedc79625b8c388 -address /run/snap.docker/containerd/containerd.sock
docker-default (enforce)        4 S lxd       223503  223483  0  80   0 - 658459 -     05:20 ?        00:00:10 mongod --bind_ip_all
snap.docker.dockerd (enforce)   0 S root      224273       1  0  80   0 - 179891 -     05:30 ?        00:00:00 /snap/docker/2932/bin/containerd-shim-runc-v2 -namespace moby -id dcd48cdcb73bcc8c0f98027c9e94bdf182140f98156f37b62ff26d06252c22ef -address /run/snap.docker/containerd/containerd.sock
docker-default (enforce)        4 S lxd       224292  224273  0  80   0 - 659309 -     05:30 ?        00:00:07 mongod --bind_ip_all

Links

• Overview of Linux containers