On ubuntu 16.04.6 on trying to mask a systemd service. I am seeing errors like below.
systemctl mask hadoop-hdfs-zkfc.service
Failed to activate service 'org.freedesktop.systemd1': timed out
I am using the default systemd version that comes with Ubuntu 16.04.6.
ubuntu@platform1:~$ systemctl --version
systemd 229
+PAM +AUDIT +SELINUX +IMA +APPARMOR +SMACK +SYSVINIT +UTMP
+LIBCRYPTSETUP +GCRYPT +GNUTLS +ACL +XZ -LZ4 +SECCOMP +BLKID +ELFUTILS
+KMOD -IDN
The issue does not come always. But once this issue is hit the only way to recover the systemd is to do a hard-reboot.
Looking at the syslog it appears systemd aborted.
May 18 08:49:24 platform3 systemd[1]: Removed slice User Slice of support.
May 18 08:49:27 platform3 systemd[1]: Assertion 's->type ==
SERVICE_ONESHOT' failed at ../src/core/service.c:1792, function
service_enter_start(). Aborting.
May 18 08:49:27 platform3 systemd[1]: Caught <ABRT>, dumped core as pid 15839.
May 18 08:49:27 platform3 systemd[1]: Freezing execution.
busctl output looks like below
ubuntu@platform3:~/logs$ busctl
NAME PID PROCESS USER CONNECTION UNIT SESSION DESCRIPTION
:1.1 976 systemd-logind root :1.1 systemd-logind.service - -
:1.3 971 accounts-daemon root :1.3 accounts-daemon.service - -
:1.5434 49174 systemctl root :1.5434 cron.service - -
:1.5435 49223 systemctl root :1.5435 ssh.service - -
:1.5436 49408 busctl ubuntu :1.5436 ssh.service - -
:1.7 1109 unattended-upgr root :1.7 unattended-upgrades.se... - -
com.ubuntu.LanguageSelector - - - (activatable) - -
org.debian.AptXapianIndex - - - (activatable) - -
org.freedesktop.Accounts 971 accounts-daemon root :1.3 accounts-daemon.service - -
org.freedesktop.DBus 936 dbus-daemon messagebus org.freedesktop.DBus dbus.service - -
org.freedesktop.hostname1 - - - (activatable) - -
org.freedesktop.locale1 - - - (activatable) - -
org.freedesktop.login1 976 systemd-logind root :1.1 systemd-logind.service - -
org.freedesktop.network1 - - - (activatable) - -
org.freedesktop.resolve1 - - - (activatable) - -
org.freedesktop.systemd1 - - - (activatable) - -
org.freedesktop.thermald - - - (activatable) - -
org.freedesktop.timedate1 - - - (activatable) - -
Can someone let me know, how to debug this?
The issue looks similar to the one discussed here. So is this some known systemd issue on Ubuntu 16.04.6?
