You may see the following message when logging into the LogLogic LMI GUI:


This warning occurs as a result of one or more specific LMI-related engines that are in disabled status. Not every LMI engine will trigger this warning though but this warning is specifically triggered by LMI engines. In other words, standard Linux processes will not trigger this warning. Only the engines in the "BACKEND" group will trigger this warning. The engine definition in /loglogic/conf/node_config.xml dictates whether an engine is in the BACKEND group or another group.

If you want to see which specific engine(s) triggered this you can login as toor using ssh and execute the watchqueue command. The default first page of information shows each engine status. You should see one or more that are in disabled status. The command syntax is simply:
$ watchqueue

Here is the list of engines that are part of the BACKEND group. The appliance model dictates which engines appear in your watchqueue output so only a subset of these engines will be running on a given appliance.
engine_collector
engine_filecollector
engine_highpri_reader
engine_http_collector
engine_led
engine_llaggregation
engine_llcorrelation
engine_lldaemon
engine_lldatanode
engine_llquerynode
engine_llzookeeper
engine_llzookeeper_sync
engine_llwebapp
engine_lx_parser
engine_lx_scheduler
engine_rcollector
engine_rsender
engine_rtserver
engine_st_reporter
engine_stunnel
engine_tcp_scheduler
engine_tcpcollector
engine_tcpforwarder
engine_trapcollector
engine_uldpcollector
ll_opsec_manager
 

Physical and virtual appliances

Typically if an engine is in disabled status it is for good reason and was put into that status by mtask itself as a safety mechanism. You can try to remove this GUI warning by starting the engine(s) that are disabled. Do not be surprised though if the engine immediately (within a couple seconds) goes back to disabled status. This indicates more troubleshooting and analysis is required to determine what the problem is and resolve it so the engine can remain healthy. If the engine reverts back to disabled status again the best practice is to not attempt manually starting it again otherwise engine escalations can be triggered which can lead to other engine restarts and possibly hardware reboots.

$ mtask -s <engine_name> start

For example:
$ mtask -s engine_filecollector start

If the engine(s) will not stay in running status then, as the message suggests, contact TIBCO LogLogic LMI Technical Support so we can assist with getting the appliance back to a healthy state.

This article explains the cause for this warning and methods for resolving it.