`require': cannot load such file -- mail

[downright770]

here is the server log file

"version":"0.26.5","timestamp":1515181908},"check":{"command":"/etc/sensu/plugins/sensu-plugins-memory-checks-master/bin/check-memory-percent.rb","handler":"mailer","contact":"support","subscribers":["Infrastructure"],"interval":5,"name":"check-memory-percent","issued":1515181910,"executed":1515181910,"duration":0.082,"output":"MEM CRITICAL - system memory usage: 96%\n","status":2,"type":"standard","history":["2","2","2","2","2","2","2","2","2","2","2","2","2","2","2","2","2","2","2","2","2"],"total_state_change":0},"occurrences":259317,"occurrences_watermark":259317,"action":"create","timestamp":1515181910,"id":"9ea995ea-aa4c-44c2-af66-bb43b4f4dac6","last_state_change":1513884914,"last_ok":1513884914,"silenced":false,"silenced_by":[]}} {"timestamp":"2018-01-05T14:51:50.901343-0500","level":"error","message":"handler output","handler":{"type":"pipe","command":"/etc/sensu/plugins/sensu-plugins-mailer-master/bin/handler-mailer.rb","name":"mailer"},"event":{"id":"9ea995ea-aa4c-44c2-af66-bb43b4f4dac6"},"output":["/opt/sensu/embedded/lib/ruby/site_ruby/2.4.0/rubygems/core_ext/kernel_require.rb:55:in require': cannot load such file -- mail (LoadError)\n\tfrom /opt/sensu/embedded/lib/ruby/site_ruby/2.4.0/rubygems/core_ext/kernel_require.rb:55:in require'\n\tfrom /etc/sensu/plugins/sensu-plugins-mailer-master/bin/handler-mailer.rb:18:in

'\nignoring event -- no handler defined\n"]}`

[downright770]

Was able to get this going after installing
/opt/sensu/embedded/bin/gem install mail
cp mail.rb into the dir /opt/sensu/embedded/bin/
/opt/sensu/embedded/bin/gem install erubis
/opt/sensu/embedded/bin/gem install ruby-ntlm

still get error
{"timestamp":"2018-01-08T15:16:57.202950-0500","level":"error","message":"unknown handler","handler_name":"default"} {"timestamp":"2018-01-08T15:16:57.444794-0500","level":"info","message":"handler output","handler":{"type":"pipe","command":"/etc/sensu/plugins/sensu-plugins-mailer-master/bin/handler-mailer.rb","name":"mailer"},"event":{"id":"9ea995ea-aa4c-44c2-af66-bb43b4f4dac6"},"output":["mail -- sent alert for prd-confluence-01.mtl.bios.run/check-memory-percent to [email protected]\n"]}

and just keeps sending the email every time it does the check.

[majormoses]

That is odd, it should have been pulled in as a dependency when it installed as it is part of the runtime dependencies here how did you install the plugin?

[nynhex]

We're also experiencing the exact same problem using this plugin with Sensu.

I installed the mail gem as such sudo /opt/sensu/embedded/bin/gem install mail

Restarted all the sensu services, and receive the following stacktrace/error when trying to fire the handler/plugin:

:{"id":"141e08d8-3fac-4f94-8150-396bc5d31bc9"},"output":["/opt/sensu/embedded/lib/ruby/site_ruby/2.4.0/rubygems/core_ext/kernel_require.rb:55:in `require': cannot load such file -- erubis (LoadError)\n\tfrom /opt/sensu/embedded/lib/ruby/site_ruby/2.4.0/rubygems/core_ext/kernel_require.rb:55:in `require'\n\tfrom /etc/sensu/plugins/mailer.rb:20:in `<main>'\nignoring event -- no handler defined\n"]}

[majormoses]

I also see that erubis dep also called out: https://github.com/sensu-plugins/sensu-plugins-mailer/blob/2.0.0/sensu-plugins-mailer.gemspec#L34

[majormoses]

Can you please show me the output of sudo /opt/sensu/embedded/bin/gem list?