Nagios Support Forum

Hi,
I am currently monitoring VMWare ESXI hosts using VCenter(Windows Machines) server in Nagios with the help of check_vmware_esx.pl plugin.
Everything is working fine until these ESXI hosts were moved to a new VCenter server (which now runs on Linux). I'm getting authentication failures when trying to get the data from the new VCenter server. The same userid and password when used to login to the VCenter sevrer using the web console is working fine. But when tried from nagios to get the data using the plugin authentication failure is what i'm seeing. Is there a newer version of the plugin that i'm supposed to use or an additonal flag in the command that i have to add to get this working.
The command that i'm currently using looks like this
./check_vmware_esx.pl -D $VCenter_Server -H $ESXI_Host -u ###### -p ####### -S cpu -s usage -w 85 -c 90

Thanks in Advance!

Is this a typo?

./check_vmware_esx.pl -D $VCenter_Server -H $ESXI_Host -u ###### -p ####### -S cpu -s usage -w 85 -c 90

It's supposed to be: Can you try using the connect.pl as described in this post - https://support.nagios.com/forum/viewto ... 0&start=20, in order to see if you are going to be able to connect to the server?

Also, have you checked the logs on VCenter for authentication errors?

Can you post an example of you service config?

Hi,
Thank you so much for responding.

I tried using the connect.pl to connect to the Vcenter server.
"
[nagios@nagiosserver general]$ ./connect.pl --url https://xx.xx.xx.xxx/sdk/vimService --username uname -password passwd
Error: Cannot complete login due to an incorrect user name or password.
"
But the same username and password works for the Vcenter web-console.

The command above should not change if my Vcenter server is windows based or Linux based. Correct?

This is the services definition in services_$host.cfg file for monitoring CPU Usage

define service {
host_name $host
service_description ESXI_Cpu_Usage
servicegroups Services
check_command check_vmware_esx_host!$host!cpu!-s usage!-w 85 -c 90!
max_check_attempts 3
check_interval 15
retry_interval 10
check_period 24x7
notification_interval 15
contact_groups ContactTeam
notification_period 24x7
notifications_enabled 0
notification_options c,r
_xiwizard nrpe
register 1
}

My username/password has special characters, i tried the same using quotes too, still the same error.

My username/password has special characters, i tried the same using quotes too, still the same error.

Have you tried using single quotes?

Example: Can you show us the config of the "check_vmware_esx_host" command as well?

this is the command definition
define command {
command_name check_vmware_esx_host
command_line $USER1$/check_vmware_esx.pl -D $HOSTADDRESS$ -H $ARG1$ -u $USER18$ -p $USER19$ -S $ARG2$ $ARG3$ $ARG4$
}

I also tried updating the vSphere SDK version to 6.5 still the same Error: Cannot complete login due to an incorrect user name or password.

Thank you so much for your time and suggestions. I was able to get the data from the esxi hosts, i had to upgrade to vSphere SDK version from 6.0 to 6.5 and play with quotes around the username and password. It finally worked!

Glad to hear it is working!!

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