Error checking serverStatus:undefined method `[]' for nil:NilClass

[nnsaln]

Error checking serverStatus:undefined method []' for nil:NilClass ["/etc/sensu/plugins/apps/metrics-mongodb.rb:173:ingather_replication_metrics'", "/etc/sensu/plugins/apps/metrics-mongodb.rb:140:in run'", "/opt/sensu/embedded/lib/ruby/gems/2.3.0/gems/sensu-plugin-1.3.0/lib/sensu-plugin/cli.rb:57:inblock in class:CLI'"]

[andrewawagner]

I ran into the same thing with the latest metrics change.

[eheydrick]

Can you try the latest version (1.1.0) and see if it fixes this issue.

[nnsaln]

I still got this error
Check failed to run: undefined method[]' for nil:NilClass, ["/opt/sensu/embedded/lib/ruby/gems/2.3.0/gems/sensu-plugins-mongodb-1.1.0/lib/sensu-plugins-mongodb/metics.rb:120:in server_metrics'", "/etc/sensu/plugins/apps/check-mongodb-metric.rb:126:inrun'", "/opt/sensu/embedded/lib/ruby/gems/2.3.0/gems/sensu-plugin-1.3.0/lib/sensu-plugin/cli.rb:57:in block in <class:CLI>'"]

[naemono]

For me this error occurred because I did not supply the proper credentials to authenticate to the mongodb database. (--user, --password options)

[eheydrick]

@nnsaln is this still an issue for you?

[ankitjain2]

@eheydrick I am still seeing the issue with check-mongodb-metrics.rb

I am trying to run the simple
/etc/sensu/plugins/check-mongodb-metric.rb --host <myhostname.com> --ssl

Check failed to run: undefined method []' for nil:NilClass, ["/opt/sensu/embedded/lib/ruby/gems/2.3.0/gems/sensu-plugins-mongodb-1.2.0/lib/sensu-plugins-mongodb/metics.rb:120:in server_metrics'", "/etc/sensu/plugins/check-mongodb-metric.rb:126:in run'", "/opt/sensu/embedded/lib/ruby/gems/2.3.0/gems/sensu-plugin-1.4.2/lib/sensu-plugin/cli.rb:58:in block in <class:CLI>'"]

[majormoses]

@ankitjain2 I notice you are not using embedded ruby from the path, does this bug affect you if you use sensu embedded ruby?

[majormoses]

Can someone confirm that specifying credentials as per: #34 (comment) solves the issue?

We should ensure that credentials are not required as last I checked mongodb does not authentication despite this being a good security posture.

[majormoses]

Also I am noticing that the same issue effects multiple checks based on the comments here, we should keep track of which ones are affected and their resolution:

• check-mongodb-metric.rb
• metrics-mongodb.rb

[majormoses]

@ankitjain2 @nnsaln @andrewawagner can you please confirm that #34 (comment) fixes this for you? I would like to know if its a matter of improving error handling or a bug.

[DoctorOgg]

I had the same issue, however, i added the role "clusterMonitor" to a user I created on the admin database and it workes ....

[majormoses]

interesting, let's minimally document that it needs that permission for the user and can look at better error handling.