I have spent several days on an issue that's incredibly frustrating and I'm straight out of options.

I am currently using a CentOS 6.8 server at work for our website. CentOS 6 (Enterprise Linux 6 or EL6) uses the older init.d model for startup scripts. There is a program my boss requires me to use, the SonicWALL CDP Agent. He has a SonicWALL backup server, and their "agent" software runs in the background to back up specific files and folders to the server. It's actually built upon Acronis TrueImage, but that's another story.

The biggest issue is that their CDP agent uses Adobe AIR. They must have designed it this way to be cross-platform (as they have an installer for Windows/OSX/Linux), but of course Adobe completely stopped supporting AIR on 64-bit Linux some time ago. Their site gives some steps for getting it installed, but that dates back to Red Hat 5.5, not even 6.

I did manage to get AIR to install on EL7 by following the steps for EL6, and just noting where the package names had changed in the repos. Interesting to note that the normal GUI installer (AdobeAIRInstaller.bin) doesn't work and gives some error about "maybe your admin prohibits installs" even when running as root), but the .rpm files work.

I have the most current ones:

Combined with the GTK2 i686 libraries, this actually works.

However, the CDP Agent is more complicated than this. There are two system services that need to run in order for the agent software to actually work (and if you think about it, this would be required for the automatic backups to work anyway.)

Their installer, however, is years old and places the startup scripts in init.d. This is "supposed" to work in EL7, but it doesn't. I've spent hours fiddling with this and it simply does not work.

So basically, there are two binaries that need to run. The commands to start them are:

/sbin/cdp/cdpdaemon start  

If I open a terminal and run these manually, they work - and I can open the CDP Agent and it works. However, they aren't starting up at boot due to the init.d/systemd incompatibility.

So I made a couple simple "services" and placed them in the right spots. The cdpdaemon.service file, for example:

Description=CDP Daemon Service
After=syslog.target network.target

ExecStart=/sbin/cdp/cdpdaemon start


I placed this in /usr/lib/systemd/system/cdpdaemon.service and made a symlink to it in /etc/systemd/system/multi-user.target.wants/cdpdaemon.service.

But here's what happens when I try to check the status:

[root@localhost Desktop]# systemctl status cdpdaemon.service
● cdpdaemon.service - CDP Daemon Service
   Loaded: loaded (/usr/lib/systemd/system/cdpdaemon.service; enabled; vendor preset: disabled)
   Active: failed (Result: exit-code) since Sun 2016-08-21 22:08:13 EDT; 10s ago
      Process: 1596 ExecStart=/sbin/cdp/cdpdaemon start (code=exited, status=0/SUCCESS)
 Main PID: 1633 (code=exited, status=127)

Aug 21 22:08:13 localhost.localdomain systemd[1]: Starting CDP Daemon Service...
Aug 21 22:08:13 localhost.localdomain cdpdaemon[1596]: Starting  process.
Aug 21 22:08:13 localhost.localdomain systemd[1]: Started CDP Daemon Service.
Aug 21 22:08:13 localhost.localdomain systemd[1]: cdpdaemon.service: main process exited, code=exited, status=127/n/a
Aug 21 22:08:13 localhost.localdomain systemd[1]: Unit cdpdaemon.service entered failed state.
Aug 21 22:08:13 localhost.localdomain systemd[1]: cdpdaemon.service failed.

The other one does that same thing. It looks like it tries to run, but then stops and reports an error. If I open a terminal and simply type /sbin/cdp/cdpdaemon start, it works perfectly fine.

Am I doing something wrong here? I don't understand the different types of "target" options nor the "after" and type. (I basically took a working service, copied the text and changed the command)

I suppose another option would be to make a cronjob that runs at a certain time (let's say 11pm, if the backups run at midnight) that runs the two commands, but that seems like the wrong way to go about this.

The program DOES run, I just can't get it to run on its own without me starting the two helper processes.

Edit: I thought I'd provide the install .sh file in case it helps. You can see where it checks what distro you're running and creates the init.d scripts.


  • Try adding Environment=SYSTEMD_LOG_LEVEL=debug under [Service] Commented Aug 22, 2016 at 4:20
  • That didn't seem to make any difference. The "status" still shows the same thing, unless there's a difference place to check the logs at. Commented Aug 22, 2016 at 4:52
  • I feel your pain... I'm still trying to catch up with systemd. What about running journalctl -af while typing to start the service? Does the service need to run as root or do you need to specify a different user by any chance? What if you had systemd run an strace -f on it? Commented Aug 22, 2016 at 5:19
  • Strangely, it appears you have a PATH problem. Check the old init script and see if it is doing something odd with the PATH. Commented Aug 22, 2016 at 5:43
  • OK, so when I try journalctl -af I get the same messages as my above post. Starting, main process exited with status 127, entered failed state, and service failed. strace says "command not found" Commented Aug 22, 2016 at 12:55

3 Answers 3


"Type=fokring" is for services that fork a child and put that into background and themselves exit normally. Looking at your output it feels like your programs do not do that. what happens if you change "Type=forking" to "Type=simple"?

  • Tried that, this is what I get. [root@localhost ~]# systemctl status cdpagentproxy ● cdpagentproxy.service - CDP Agent Proxy Service Loaded: loaded (/etc/systemd/system/cdpagentproxy.service; disabled; vendor preset: disabled) Active: inactive (dead) Aug 22 18:48:18 localhost.localdomain systemd[1]: Started CDP Agent Proxy Service. Aug 22 18:48:18 localhost.localdomain systemd[1]: Starting CDP Agent Proxy Service... Commented Aug 22, 2016 at 22:48
  • And it should go without saying it doesn't actually do anything. The process isn't running. Commented Aug 22, 2016 at 22:49
  • why does it say /etc/systemd/system/cdpagentproxy.service; disabled in this case? in your previous posts it was enabled.
    – Ektich
    Commented Aug 23, 2016 at 8:25
  • Oh, it was because I didn't enable it through systemtcl, I just put the .service file back in the folder. So when I enable it, I get the same thing. It says it exited. Process: 1384 ExecStart=/sbin/cdp/cdpagentproxy (code=exited, status=0/SUCCESS) Main PID: 1384 (code=exited, status=0/SUCCESS) It's almost as if it doesn't like being run from systemctl. Commented Aug 23, 2016 at 12:55
  • one more question: any chance the cdpagenproxy is actually running? what does 'ps -aux' show? and let's have some consistency as well: in the original question you were showing outputs of systemctl status cdpdaemon.service, now you are showing systemctl status cdpagentproxy.service.
    – Ektich
    Commented Aug 23, 2016 at 19:41

First, determine if these processes do fork or not. If you start a "forking" process in a terminal, it releases the terminal and "goes into background". Such processes need Type=forking. Otherwise, if a process does not release the terminal unless you terminate it with Ctrl+C or put & in the end of the command-line, then it is Type=simple. It's that simple.

Second, you have mentioned that there are two processes that have to be started in order. Did you write the unit files for both of them? If not, then do it right now.

Third, don't forget the dependencies. If the latter process (/sbin/cdp/cdpdaemon start) depends on the former (/sbin/cdp/cdpagentproxy), then you need to express requirement and ordering dependencies between them in the unit files.

If, for example, the unit files you've created are named cdpagentproxy.service and cdpdaemon.service respectively, then you have to put these lines in your cdpdaemon.service unit file:


(Put these lines inside the existing [Unit] section, of course. I've included the section header only for completeness.)

Then run systemctl daemon-reload, kill both processes and try to start the unit manually, or simply add it to auto-start and reboot.

  • Someone already replied about the forking thing, see my reply to them about it not making any difference. As for the two processes - I made them separate services. I was only pasting the results of one as they both look identical. The two processes do not depend on each other, you can start either one before the other. However, as I've said above, none of that works. It says the service started and "exited normally", whereas if I just type the process name myself it starts and stays running as it should. Commented Aug 23, 2016 at 21:23

Let's step back a sec.

The sonicwall process isn't compatible with RHEL/Centos7.

Stop there. Pass it up to the fine folks at Sonicwall for their fix; that's exactly what you should be paying them license fees to do, and they (should) have the expertise to support their software like that.

CentOS6 is under support for another half-decade, but they should get started on an eeeeeasy transition.

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