Installation of Linux agent failed

[mmoser]

I had downloaded the nagios-5.7.2-64.ova image and I am running that on a Windows 10 Enterprise laptop using VMware Workstation.

After initial setup I was trying to deploy my first agent on a Linux box running SUSE Enterprise. I entered the address, selected the OS type, entered my root credentials into the form but then I only got an error page stating:

FAILED - MODULE FAILURE See stdout/stderr for the exact error.

The console of the NagiosXI VM shows nothing. What stdout/stderr is meant here? How can I find out, why that agent installation failed?

[cdienger]

Run the following while you try to deploy again:

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tail -f  /usr/local/nagiosxi/var/cmdsubsys.log

It should show you something like:

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CMDLINE=php /usr/local/nagiosxi/scripts/deploy_run_job.php -j '3'
OUTPUT=
RETURNCODE=4

Try running the CMDLINE directly on the command line of the XI machine as nagios:

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su - nagios 
php /usr/local/nagiosxi/scripts/deploy_run_job.php -j '3'

The number passed with the -j argument will likely be different. Make sure to use whatever was logged int he cmdsubsys.log file.

[mmoser]

Already the tail fails. There *is* no such file. Which - I presume - indicates, that already the login fails. Even though I am sure to pass it the exact credentials I am using myself to ssh into the box. And - yes - that's a login using uid&pwd, not using any keys.

Can one trigger the script (or whatever is executed by that form) manually? I tried to peek into the .php script and wanted to single-step it but that seems to be compiled or something. It's not readable text...

I then found the following summary:

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                   "hosts": {
                        "hostname_here": {
                            "_ansible_no_log": false, 
                            "action": "zypper", 
                            "changed": false, 
                            "exception": "Traceback (most recent call last):\r\n  
							File \"/root/.ansible/tmp/ansible-tmp-1597307430.26-17558-199103016661433/AnsiballZ_zypper.py\", line 102, in <module>\r\n
							_ansiballz_main()\r\n
							File \"/root/.ansible/tmp/ansible-tmp-1597307430.26-17558-199103016661433/AnsiballZ_zypper.py\", line 94, in _ansiballz_main\r\n
							invoke_module(zipped_mod, temp_path, ANSIBALLZ_PARAMS)\r\n
							File \"/root/.ansible/tmp/ansible-tmp-1597307430.26-17558-199103016661433/AnsiballZ_zypper.py\", line 40, in invoke_module\r\n
							runpy.run_module(mod_name='ansible.modules.packaging.os.zypper', init_globals=None, run_name='__main__', alter_sys=True)\r\n
							File \"/usr/lib64/python2.7/runpy.py\", line 176, in run_module\r\n
							fname, loader, pkg_name)\r\n  File \"/usr/lib64/python2.7/runpy.py\", line 82, in _run_module_code\r\n
							mod_name, mod_fname, mod_loader, pkg_name)\r\n
							File \"/usr/lib64/python2.7/runpy.py\", line 72, in _run_code\r\n
							exec code in run_globals\r\n
							File \"/tmp/ansible_zypper_payload_w5Pfyo/ansible_zypper_payload.zip/ansible/modules/packaging/os/zypper.py\", line 195, in <module>\r\n
							ImportError: No module named xml\r\n", 
                            "failed": true, 
                            "module_stderr": "Shared connection to hostname_here closed.\r\n", 
                            "module_stdout": "Traceback (most recent call last):\r\n
							File \"/root/.ansible/tmp/ansible-tmp-1597307430.26-17558-199103016661433/AnsiballZ_zypper.py\", line 102, in <module>\r\n
							_ansiballz_main()\r\n
							File \"/root/.ansible/tmp/ansible-tmp-1597307430.26-17558-199103016661433/AnsiballZ_zypper.py\", line 94, in _ansiballz_main\r\n
							invoke_module(zipped_mod, temp_path, ANSIBALLZ_PARAMS)\r\n
							File \"/root/.ansible/tmp/ansible-tmp-1597307430.26-17558-199103016661433/AnsiballZ_zypper.py\", line 40, in invoke_module\r\n
							runpy.run_module(mod_name='ansible.modules.packaging.os.zypper', init_globals=None, run_name='__main__', alter_sys=True)\r\n
							File \"/usr/lib64/python2.7/runpy.py\", line 176, in run_module\r\n
							fname, loader, pkg_name)\r\n  File \"/usr/lib64/python2.7/runpy.py\", line 82, in _run_module_code\r\n
							mod_name, mod_fname, mod_loader, pkg_name)\r\n  File \"/usr/lib64/python2.7/runpy.py\", line 72, in _run_code\r\n
							exec code in run_globals\r\n
							File \"/tmp/ansible_zypper_payload_w5Pfyo/ansible_zypper_payload.zip/ansible/modules/packaging/os/zypper.py\", line 195, in <module>\r\n
							ImportError: No module named xml\r\n", 
                            "msg": "MODULE FAILURE\nSee stdout/stderr for the exact error", 
                            "rc": 1
                        }
                    }, 

Does that bring us any further?
Sigh! I though I was going to install a monitoring tool, not debug a monitoring tool...

[benjaminsmith]

HI,

Looking over that log output, you might be hitting this issue:

https://lists.opensuse.org/opensuse-bug ... 04383.html

Let's try to install python-xml on this host, and let me know if that resolves the issues.

https://software.opensuse.org/package/python-xml

Otherwise, let us know what version of Enterprise SUSE you're using so we can try to replicate this on our end.

Thanks,
Benjamin