NAME¶

evQueue - evQueue core engine

SYNOPSIS¶

evqueue [ OPTIONS ]

DESCRIPTION¶

evQueue is the core engine daemon. It must be running if you want to launch tasks and workflows.

An IPC queue is used for communication between tasks monitors and evQueue daemon. This is used to allow daemon restarting while tasks are running (as IPC queue is persistent). Missed messages will be processed after restart. So it is safe to restart the engine while workflows are running.

OPTIONS¶

--config configfile

Load configuration from file configfile.

--daemon

Run in background.

--ipcq-remove

Remove the IPC queue. This will erase all persistent state of processes termination. In general you should never use this option unless the IPC queue has become corrupted. This can happen after an upgrade to an incompatible version when messages are pending in queue.

--ipcq-stats

Display information about IPC queue.

--ipc-terminate-tid tid

Send IPC message to notify evQueue that the task identified by tid is terminated. The return code -1 is sent (error status). This can be used if a task is stuck (task is terminated but message from monitor to daemon has been lost). This can happen when multiple daemons are launched with the same queue ID and the wrong daemon gets notified.

--version

Display version information and build date.

SEE ALSO¶

http://www.evqueue.net/