zrok does not handle SIGCHLD producing zombie processes in container mode #1016
Description
Just use quichstark and connect to zrok-zrok-frontend-1 as docker exec -u root zrok-zrok-frontend-1 bash and install procps then run ps ax:
you will find here a number of zombie processes
as zrok runs as init in the container, and did not listen for SIGCHLD notifications from children
These are related to my attempts to manage the container, but as zrok runs as init, it is up to him to take care of all possible SIGCHLD signals.
bash-5.1# ps ax
PID TTY STAT TIME COMMAND
1 ? Ssl 0:26 zrok access public /etc/zrok-frontend/config.yml --verbose
65 pts/1 Ss 0:00 bash
74 pts/1 Z 0:00 [gpgconf] <defunct>
76 pts/1 Z 0:00 [gpgconf] <defunct>
78 pts/1 Z 0:00 [gpg] <defunct>
80 pts/1 Z 0:00 [microdnf] <defunct>
82 pts/1 Z 0:00 [gpgconf] <defunct>
84 pts/1 Z 0:00 [gpg] <defunct>
86 pts/1 Z 0:00 [gpg] <defunct>
88 ? Ssl 0:00 gpg-agent --homedir /var/cache/yum/metadata/ubi-9-baseos-rpms-9-x86_64.tmp/gpgdir --use-standard-socket --daemon
90 ? SLl 0:00 scdaemon --multi-server --homedir /var/cache/yum/metadata/ubi-9-baseos-rpms-9-x86_64.tmp/gpgdir
98 pts/1 Z 0:00 [gpg] <defunct>
100 pts/1 Z 0:00 [gpg] <defunct>
102 ? Ssl 0:00 gpg-agent --homedir /var/cache/yum/metadata/ubi-9-appstream-rpms-9-x86_64.tmp/gpgdir --use-standard-socket --daemon
104 ? SLl 0:00 scdaemon --multi-server --homedir /var/cache/yum/metadata/ubi-9-appstream-rpms-9-x86_64.tmp/gpgdir
112 pts/1 Z 0:00 [gpg] <defunct>
114 pts/1 Z 0:00 [gpg] <defunct>
116 ? Ssl 0:00 gpg-agent --homedir /var/cache/yum/metadata/ubi-9-codeready-builder-rpms-9-x86_64.tmp/gpgdir --use-standard-socket --daemon
118 ? SLl 0:00 scdaemon --multi-server --homedir /var/cache/yum/metadata/ubi-9-codeready-builder-rpms-9-x86_64.tmp/gpgdir
129 pts/1 R+ 0:00 ps ax
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