Monday, October 27, 2014

Signal 17 and RHEL upgrades

This weekend we upgraded servers to Red Hat Enterprise Linux (RHEL) 5.11 but found quite a surprise when the DBA ran a simple ps command and received the following error message:

Signal 17 (CHLD) caught by ps (procps version 3.2.8).

What did we find out by searching the Interwebs in the middle of the night?  A KB article from Red Hat (subscription required) that told us that the error is confirmed on version 6.6 and has a few simple solutions.  Luckily our system administrators were able to implement one of them in order to return the ps command back to service!

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