How to control OMC cloudagent using systemd on Oracle Linux 7

Controlling Oracle Management Cloud agent to startup at boot can be a little complicated. Often admins KLUDGE up shell scripts to make it work, but there is a cleaner way using systemd commands.systemd is one of the core components of a Oracle Linux 7 deployment. Is is also part of the RHEL7 deployment. It controls demons, allows admins to easily start and stop services. It is not just the daemon, but also an entire suite of components, and is often considered a blackbox to many Linux admins. This post will show how to make the OMC cloudagent managed by systemd.

These steps assume that OMC is installed in /u01/omc and using the oracle user.

The first step is to create three wrapper scripts to start, stop and check the status

These are assuming that OMC is installed into /u01/omc

You will need to copy these files into /u01

The following files goes into /u01/omc/omc_start

#!/bin/bash

su – “oracle” -c “/u01/omc/agent_inst/bin/omcli start agent”

The following files goes into /u01/omc/omc_status

#!/bin/bash

su – “oracle” -c “/u01/omc/agent_inst/bin/omcli status agent”

The following files goes into /u01/omc/omc_stop

#!/bin/bash

su – “oracle” -c “/u01/omc/agent_inst/bin/omcli stop agent”

Finally , create a new file usr/lib/systemd/system/omc.service

[Unit]

Description=OMC daemon

Documentation=http://www.talesformthedatacenter.com

After=network.target syslog.target

[Service]

# see man systemd.service

Type=oneshot

ExecStart=/u01/omc/omc_start

RemainAfterExit=true

ExecStop=/u01/omc/omc_stop

StandardOutput=journal

[Install]

WantedBy=multi-user.target

Then check the omc.service, to make sure there are no errors. No output is good!

systemd-analyze verify /usr/lib/systemd/system/omc.service

Next enable the service, that will startup OMC on reboot

systemctl enable omc.service

Now verify that it is enabled

systemctl list-unit-files | grep omc.service

Now the normal systemctl commands  will work,

systemctl start omc.service

systemctl stop omc.service

systemctl status omc.service

Hopefully this helps you get OMC running on Oracle Linux 7 as a proper service.