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!