Hello Peter/ team, I am stuck with issue since four days, spent hours and hours, I am unable find a cause, I compiled syslog-ng from source and resolved all the dependencies, when I get to start it, it wont start. here is the out put, please have a look at it. Any help is appreciated. OS version : CentOS Linux release 7.3.1611 (Core) [root@my-host ~]# systemctl start syslog-ng.service Job for syslog-ng.service failed because a timeout was exceeded. See "systemctl status syslog-ng.service" and "journalctl -xe" for details. [root@my-host ~]# systemctl status syslog-ng.service ● syslog-ng.service - System Logger Daemon Loaded: loaded (/usr/lib/systemd/system/syslog-ng.service; enabled; vendor preset: enabled) Active: activating (start) since Thu 2017-05-04 16:13:44 PDT; 29s ago Docs: man:syslog-ng(8) Main PID: 5089 (syslog-ng) CGroup: /system.slice/syslog-ng.service └─5089 /usr/sbin/syslog-ng -F -p /var/run/syslogd.pid May 04 16:13:44 my-host systemd[1]: Starting System Logger Daemon... [root@my-host ~]# journalctl -xe May 04 16:10:01 my-host systemd[1]: Starting Session 348 of user root. -- Subject: Unit session-348.scope has begun start-up -- Defined-By: systemd -- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel -- -- Unit session-348.scope has begun starting up. May 04 16:10:21 my-host nslcd[1289]: [18832f] <group/member="root"> failed to bind to LDAP server ldap://ldap.vip.slc.e May 04 16:10:21 my-host nslcd[1289]: [18832f] <group/member="root"> no available LDAP server found: Can't contact LDAP May 04 16:10:21 my-host nslcd[1289]: [18832f] <group/member="root"> no available LDAP server found: Server is unavailab May 04 16:10:21 my-host CROND[5035]: (root) CMD (/usr/lib64/sa/sa1 1 1) May 04 16:10:23 my-host polkitd[676]: Registered Authentication Agent for unix-process:5039:17396299 (system bus name : May 04 16:10:23 my-host systemd[1]: Stopping Flush Journal to Persistent Storage... -- Subject: Unit systemd-journal-flush.service has begun shutting down -- Defined-By: systemd -- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel -- -- Unit systemd-journal-flush.service has begun shutting down. May 04 16:10:23 my-host systemd-journal[2711]: Journal stopped -- Subject: The journal has been stopped -- Defined-By: systemd -- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel -- -- The system journal process has shut down and closed all currently -- active journal files. May 04 16:10:23 my-host systemd-journal[5046]: Runtime journal is using 16.0M (max allowed 391.1M, trying to leave 586. May 04 16:10:23 my-host systemd-journal[5046]: Runtime journal is using 16.0M (max allowed 391.1M, trying to leave 586. May 04 16:10:23 my-host systemd-journald[2711]: Received SIGTERM from PID 1 (systemd). May 04 16:10:23 my-host systemd-journal[5046]: Journal started -- Subject: The journal has been started -- Defined-By: systemd -- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel -- -- The system journal process has started up, opened the journal -- files for writing and is now ready to process requests. May 04 16:10:23 my-host polkitd[676]: Unregistered Authentication Agent for unix-process:5039:17396299 (system bus name May 04 16:10:23 my-host systemd[1]: Starting Flush Journal to Persistent Storage... -- Subject: Unit systemd-journal-flush.service has begun start-up -- Defined-By: systemd -- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel -- -- Unit systemd-journal-flush.service has begun starting up. May 04 16:10:23 my-host systemd[1]: Started Flush Journal to Persistent Storage. -- Subject: Unit systemd-journal-flush.service has finished start-up -- Defined-By: systemd -- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel -- -- Unit systemd-journal-flush.service has finished starting up. -- -- The start-up result is done. May 04 16:12:14 my-host polkitd[676]: Registered Authentication Agent for unix-process:5066:17407401 (system bus name : May 04 16:12:14 my-host systemd[1]: Starting System Logger Daemon... -- Subject: Unit syslog-ng.service has begun start-up -- Defined-By: systemd -- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel -- -- Unit syslog-ng.service has begun starting up. May 04 16:13:08 my-host nslcd[1289]: [528108] <group/member="postfix"> failed to bind to LDAP server ldap://ldap.vip.sl May 04 16:13:08 my-host nslcd[1289]: [528108] <group/member="postfix"> no available LDAP server found: Can't contact LD May 04 16:13:08 my-host nslcd[1289]: [528108] <group/member="postfix"> no available LDAP server found: Server is unavai May 04 16:13:44 my-host systemd[1]: syslog-ng.service start operation timed out. Terminating. May 04 16:13:44 my-host systemd[1]: Failed to start System Logger Daemon. -- Subject: Unit syslog-ng.service has failed -- Defined-By: systemd -- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel -- -- Unit syslog-ng.service has failed. -- -- The result is failed. May 04 16:13:44 my-host systemd[1]: Unit syslog-ng.service entered failed state. May 04 16:13:44 my-host systemd[1]: syslog-ng.service failed. May 04 16:13:44 my-host polkitd[676]: Unregistered Authentication Agent for unix-process:5066:17407401 (system bus name May 04 16:13:44 my-host systemd[1]: syslog-ng.service holdoff time over, scheduling restart. May 04 16:13:44 my-host systemd[1]: Starting System Logger Daemon... -- Subject: Unit syslog-ng.service has begun start-up -- Defined-By: systemd -- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel -- -- Unit syslog-ng.service has begun starting up. [root@my-host ~]# ps -ef | grep syslog-ng root 5089 1 0 16:13 ? 00:00:00 /usr/sbin/syslog-ng -F -p /var/run/syslogd.pid root 5103 32598 0 16:14 pts/1 00:00:00 grep --color=auto syslog-ng [root@my-host ~]# systemctl status syslog-ng.service ● syslog-ng.service - System Logger Daemon Loaded: loaded (/usr/lib/systemd/system/syslog-ng.service; enabled; vendor preset: enabled) Active: activating (start) since Thu 2017-05-04 16:13:44 PDT; 1min 6s ago Docs: man:syslog-ng(8) Main PID: 5089 (syslog-ng) CGroup: /system.slice/syslog-ng.service └─5089 /usr/sbin/syslog-ng -F -p /var/run/syslogd.pid May 04 16:13:44 my-host systemd[1]: Starting System Logger Daemon... [root@my-host ~]#cat /usr/lib/systemd/system/syslog-ng.service [Unit] Description=System Logger Daemon Documentation=man:syslog-ng(8) [Service] Type=notify ExecStart=/usr/sbin/syslog-ng -F $SYSLOGNG_OPTS -p /var/run/syslogd.pid ExecReload=/bin/kill -HUP $MAINPID EnvironmentFile=-/etc/default/syslog-ng EnvironmentFile=-/etc/sysconfig/syslog-ng StandardOutput=journal StandardError=journal Restart=on-failure Environment=SYSTEMD_LOG_LEVEL=debug [Install] WantedBy=multi-user.target -- Thanks, Vijay Amrut.