Symptoms

In case if the debug option is enabled in the dedicated mode, sometimes some of the nodejs process can be allocated a "in-use" port, which prevents it from starting successfully. By design every process is guaranteed a debug port in the configured range as long as there are enough ports available in the system. In-use ports are skipped, so consecutive port allocation is not guaranteed.

Impact

Some of the nodejs processes fail to start which prevents normal iRuleLX operation.

Conditions

some of the ports in the range are busy.

Workaround

Consult with netstat output and set the debug-port-range-low to a higher value (eg. 10000+) to minimise the change of a port conflict.

Fix Information

None

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips