Description of problem: When rebooted, sendmail service fails to startup. Starting the service manually after boot works fine. When it fails at boot, these errors show up in logs: sendmail.service: Can't open PID file /run/sendmail.pid (yet?) after start: Operation not permitted sm-client.service: Failed to parse PID from file /run/sm-client.pid: Invalid argument Version-Release number of selected component (if applicable): sendmail-8.16.1-10.el9.x86_64 Steps to Reproduce: 1. Remove postfix 2. Install sendmail (we actually do this with "-postfix" and "sendmail" in kickstart) 3. Enable sendmail and sm-client services (systemctl --enable sendmail.service sm-client.service) 4. Reboot Actual results: Sendmail fails to start. Sometimes with 2 start attempts (I think NetworkManager dispatch). Always with the above errors about pid files. Expected results: Sendmail Additional info: I'm able to work around this with the following in a /etc/systemd/system/sendmail.service.d/override.conf file: [Unit] After=network-online.target [Service] Restart=on-failure RestartSec=5s ExecStartPost=/bin/sleep 1 (ExecStartPost to sleep a second seems to be the key item, but I included the others to make sure it's after the NetworkManager stuff and restarts on failures)
My bug report https://bugzilla.redhat.com/show_bug.cgi?id=1931693 refers only the error in FC35 it does not seem to affect the starting of sendmail there. It seems to be the second line in the /run/sm-client.pid file that triggers that error.
sendmail now does fail totally on FC38 but the problem appears to be selinux context problems... type=AVC msg=audit(28/06/23 03:12:33.355:11025) : avc: denied { create } for pid=1154445 comm=sendmail name=sendmail.pid scontext=system_u:system_r:sendmail_t:s0 tcontext=system_u:object_r:sendmail_var_run_t:s0 tclass=file permissive=0 type=AVC msg=audit(29/06/23 03:24:25.076:11481) : avc: denied { create } for pid=1386699 comm=sendmail name=sendmail.pid scontext=system_u:system_r:sendmail_t:s0 tcontext=system_u:object_r:sendmail_var_run_t:s0 tclass=file permissive=0 type=AVC msg=audit(29/06/23 07:59:15.562:11553) : avc: denied { create } for pid=1459730 comm=sendmail name=sendmail.pid scontext=system_u:system_r:sendmail_t:s0 tcontext=system_u:object_r:sendmail_var_run_t:s0 tclass=file permissive=0