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Я пытался установить Sensu некоторое время, я следовал руководству по установке, все шло хорошо во время установки, но когда я добавлял примеры проверок из документации, Sensu внезапно не смог подключиться к RabbitMQ. В частности, когда я добавил check_cron.json конфигурацию. Я попытался перезапустить и удалить конфигурацию (и перезапустить снова после этого), но время ожидания Sensu постоянно истекает. Стоит отметить, что RabbitMQ установлен и запущен, даже можно перемещаться через интерфейс управления, однако Sensu, похоже, этого не распознает.

Ниже приведен журнал моего сервера:

 {"timestamp":"2014-07-03T11:39:00.254061-0300","level":"warn","message":"config file applied changes","config_file":"/etc/sensu/conf.d/check_cron.json","changes":{"checks":{"cron_check":[null,{"handlers":["default"],"command":"/etc/sensu/plugins/check-proc.rb -p crond -C 1","interval":30,"subscribers":["webservers"]}]}}}
{"timestamp":"2014-07-03T11:39:00.254279-0300","level":"warn","message":"config file applied changes","config_file":"/etc/sensu/conf.d/client.json","changes":{"client":[null,{"name":"sensu-test","address":"127.0.0.1","subscriptions":["test","webservers"]}]}}
{"timestamp":"2014-07-03T11:39:00.262568-0300","level":"info","message":"loaded extension","type":"mutator","name":"only_check_output","description":"returns check output"}
{"timestamp":"2014-07-03T11:39:00.265246-0300","level":"info","message":"loaded extension","type":"handler","name":"debug","description":"outputs json event data"}
{"timestamp":"2014-07-03T11:39:00.313486-0300","level":"info","message":"i am the master"}
{"timestamp":"2014-07-03T11:39:03.326913-0300","level":"warn","message":"reconnecting to rabbitmq"}
{"timestamp":"2014-07-03T11:39:03.327281-0300","level":"warn","message":"unsubscribing from keepalive and result queues"}
{"timestamp":"2014-07-03T11:39:03.327463-0300","level":"warn","message":"resigning as master"}
{"timestamp":"2014-07-03T11:39:03.328908-0300","level":"info","message":"removed master lock"}
{"timestamp":"2014-07-03T11:39:11.343859-0300","level":"warn","message":"reconnecting to rabbitmq"}
{"timestamp":"2014-07-03T11:39:19.366786-0300","level":"warn","message":"reconnecting to rabbitmq"}
{"timestamp":"2014-07-03T11:39:20.294332-0300","level":"fatal","message":"rabbitmq connection error","error":"timed out while attempting to connect"}
{"timestamp":"2014-07-03T11:39:20.294816-0300","level":"warn","message":"stopping"}
{"timestamp":"2014-07-03T11:39:20.294959-0300","level":"warn","message":"unsubscribing from keepalive and result queues"}
{"timestamp":"2014-07-03T11:39:20.295122-0300","level":"info","message":"completing handlers in progress","handlers_in_progress_count":0}
{"timestamp":"2014-07-03T11:39:20.796222-0300","level":"warn","message":"stopping reactor"}
{"timestamp":"2014-07-03T11:50:59.786233-0300","level":"warn","message":"config file applied changes","config_file":"/etc/sensu/conf.d/client.json","changes":{"client":[null,{"name":"sensu-test","address":"127.0.0.1","subscriptions":["test","webservers"]}]}}
{"timestamp":"2014-07-03T11:50:59.808513-0300","level":"info","message":"loaded extension","type":"mutator","name":"only_check_output","description":"returns check output"}
{"timestamp":"2014-07-03T11:50:59.811049-0300","level":"info","message":"loaded extension","type":"handler","name":"debug","description":"outputs json event data"}
{"timestamp":"2014-07-03T11:50:59.858109-0300","level":"info","message":"i am the master"}
{"timestamp":"2014-07-03T11:51:02.867913-0300","level":"warn","message":"reconnecting to rabbitmq"}
{"timestamp":"2014-07-03T11:51:02.868369-0300","level":"warn","message":"unsubscribing from keepalive and result queues"}
{"timestamp":"2014-07-03T11:51:02.868466-0300","level":"warn","message":"resigning as master"}
{"timestamp":"2014-07-03T11:51:02.869157-0300","level":"info","message":"removed master lock"}
{"timestamp":"2014-07-03T11:51:10.889055-0300","level":"warn","message":"reconnecting to rabbitmq"}
{"timestamp":"2014-07-03T11:51:18.910561-0300","level":"warn","message":"reconnecting to rabbitmq"}
{"timestamp":"2014-07-03T11:51:19.842039-0300","level":"fatal","message":"rabbitmq connection error","error":"timed out while attempting to connect"}
{"timestamp":"2014-07-03T11:51:19.842408-0300","level":"warn","message":"stopping"}
{"timestamp":"2014-07-03T11:51:19.842551-0300","level":"warn","message":"unsubscribing from keepalive and result queues"}
{"timestamp":"2014-07-03T11:51:19.842714-0300","level":"info","message":"completing handlers in progress","handlers_in_progress_count":0}
{"timestamp":"2014-07-03T11:51:20.343916-0300","level":"warn","message":"stopping reactor"}
  

Если вы используете ssl-сертификаты на своем сервере rabbitmq, то у вас, вероятно, проблема с сертификатами. На github есть скрипт, клонируйте его и запустите следующие команды:

 git clone git://github.com/joemiller/joemiller.me-intro-to-sensu.git
cd joemiller.me-intro-to-sensu/

./ssl_certs.sh clean
./ssl_certs.sh generate
  

А затем настройте Rabbitmq на использование этих сертификатов:

 mkdir /etc/rabbitmq/ssl
cp server_key.pem /etc/rabbitmq/ssl/
cp server_cert.pem /etc/rabbitmq/ssl/
cp testca/cacert.pem /etc/rabbitmq/ssl/
  

И добавьте эту конфигурацию в /etc/rabbitmq/rabbitmq.config:

 [
  {rabbit, [
    {ssl_listeners, [5671]},
    {ssl_options, [{cacertfile,"/etc/rabbitmq/ssl/cacert.pem"},
                   {certfile,"/etc/rabbitmq/ssl/server_cert.pem"},
                   {keyfile,"/etc/rabbitmq/ssl/server_key.pem"},
                   {verify,verify_peer},
                   {fail_if_no_peer_cert,true}]}
  ]}
].
  

здесь вы указываете rabbitmq, какие сертификаты он будет использовать, убедитесь, что пути сертификатов совпадают с теми, в которые вы скопировали сертификаты.

 update-rc.d sensu-server defaults
update-rc.d sensu-api defaults
update-rc.d sensu-client defaults
update-rc.d sensu-dashboard defaults
  

А затем скопируйте SSL client_key и сертификат, как вы делали ранее, используя:

 cp client_key.pem client_cert.pem  /etc/sensu/ssl/
  

А затем добавьте различные конфигурации в /etc/sensu /config.json.