Nagios Support Forum

Posted: **Thu Jan 22, 2015 6:54 am**

Hi,

i try to install VMware vMA Settings Manager but get stuck with an error message. When i test the ssh configuration the webinterface shows:

Host key verification failed.

In SSH Terminal everything is fine. If i start

/usr/local/nagios/libexec/check_by_ssh -E -H xxx.xxx.xxx.xx -C "~/box293_check_vmware.pl --server virtual_center_server --check vCenter_Name_Version" --logname=vi-admin -t 30

The answer is correct:

OK: VMware vCenter Server 5.5.0 Build-1945274

without asking for credentials.

I'm stuck can anybody help me?

Posted: **Thu Jan 22, 2015 3:26 pm**

When check commands are run in the UI, they are run as the user nagios.

Can you login as nagios and rerun the command?

Code: Select all

su - nagios
/usr/local/nagios/libexec/check_by_ssh -E -H xxx.xxx.xxx.xx -C "~/box293_check_vmware.pl --server virtual_center_server --check vCenter_Name_Version" --logname=vi-admin -t 30

Posted: **Thu Jan 22, 2015 3:49 pm**

vMA Settings manager is a little different as it runs at the apache user not nagios (but the nagios user is used for the checks).

In the steps below,
10.XXX.XXX.XXX = vMA host
10.ZZZ.ZZZ.ZZZ = vCenter server

Try these commands and post back the results please:
The following commands will be done as the nagios user

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su nagios

Does this command prompt you for credentials?

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ssh [email protected]

If you do login or are not prompted for credentials, type exit so end the SSH session and return to the nagios host.

Does this command prompt you for credentials, what is the output?

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/usr/local/nagios/libexec/check_by_ssh -E 1 -l vi-admin -H 10.XXX.XXX.XXX -C '~/box293_check_vmware.pl --server 10.ZZZ.ZZZ.ZZZ --version'

We'll stop being the nagios user now, type exit

The following commands will be done as the apache user:

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su -s /bin/sh apache

Does this command prompt you for credentials?

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ssh [email protected]

If you do login or are not prompted for credentials, type exit so end the SSH session and return to the nagios host.

Does this command prompt you for credentials, what is the output?

Code: Select all

/usr/local/nagios/libexec/check_by_ssh -E 1 -l vi-admin -H 10.XXX.XXX.XXX -C '~/box293_check_vmware.pl --server 10.ZZZ.ZZZ.ZZZ --version'

Also, provide the output from these commands:

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ls -al /var/www/

ls -al /var/www/.ssh/

Do these commands produce output? Don't post the output here.

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cat /var/www/.ssh/id_dsa

cat /var/www/.ssh/known_hosts

We'll stop being the apache user now, type exit

Also, what version of check_by_ssh do you have?

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/usr/local/nagios/libexec/check_by_ssh -V

Posted: **Fri Jan 23, 2015 2:27 am**

Hi Box293,

i hoped you would reply. Thanks a lot!

I nailed the problem.

Code: Select all
su -s /bin/sh apache
Does this command prompt you for credentials?

it came back with:

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The authenticity of host '10.xxx.xxx.xxx (10.xxx.xxx.xxx)' can't be established.
ECDSA key fingerprint is lalalalala.
Are you sure you want to continue connecting (yes/no)? yes
Failed to add the host to the list of known hosts (/usr/share/httpd/.ssh/known_hosts).

i reseted the permissions and

Welcome to vSphere Management Assistant

Now all checks are woring fine.
Thanks a lot man!!

Posted: **Fri Jan 23, 2015 8:28 am**

I am glad your issue has been resolved! I am locking this topic.

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