atop package
In ubuntu 18, I am not able to install anything using apt package manager because of atop package. *root@dummyhost:~# systemctl status atopacct.serviceā atopacct.service - Atop process accounting daemon Loaded: loaded (/lib/systemd/system/atopacct.service; enabled; vendor preset: enabled) Active: failed (Result: protocol) since Thu 2023-12-14 12:10:00 WIB; 49s ago Docs: man:atopacctd(8)Dec 14 12:10:00 smartpesantren2 systemd[1]: Starting Atop process accounting daemon...Dec 14 12:10:00 smartpesantren2 atopacctd[367437]: /run/pacct_shadow.d: File existsDec 14 12:10:00 smartpesantren2 systemd[1]: atopacct.service: Can't open PID file /run/atopacctd.pid (yet?) after start: No such file or directoryDec 14 12:10:00 smartpesantren2 systemd[1]: atopacct.service: Failed with result 'protocol'.Dec 14 12:10:00 smartpesantren2 systemd[1]: Failed to start Atop process accounting daemon.* The systemctl status shows error that /run/atopacctd.pid is missing. I executed "ln -s /run/atop.pid /run/atopacctd.pid" to create symlink of atopacctd.pid from atop.pid and then restarted the atopacct.service which fixed the problem. But is this the proper way to solve this issue?
[systemd-devel] enabling cgroups v2
*ISSUE 1:* In ubuntu20, centos8 and almalinux8: *root@host:~# grep cgroup /proc/filesystemsnodev cgroupnodev cgroup2* In centos7: *root@centos:~# grep cgroup /proc/filesystemsnodev cgroup* In my centos 7, command '*grep cgroup /proc/filesystems'* does not output "nodev cgroup2". Does this mean cgroups v2 is not supported in it and cannot be enabled in it? *ISSUE 2:* In my ubuntu20, centos8 and alma8 server, I enable cgroups v2 by: 1. adding "systemd.unified_cgroup_hierarchy=1" to GRUB_CMDLINE_LINUX in /etc/default/grub, 2. executing the command "grub2-mkconfig" or "update-grub" as root and then 3. reboot the server. Without reboot, cgroups v2 does not come into effect when i check using the below command: *root@host:~# stat -fc %T /sys/fs/cgroup/tmpfs* Is there a way this can be done without a reboot? I am looking for a way to enable cgroups v2 which should n't need a reboot.
