Bug 47222 - Changes made to ping_timeout via Status Worker not synced across Apache Children
Summary: Changes made to ping_timeout via Status Worker not synced across Apache Children
Status: RESOLVED FIXED
Alias: None
Product: Tomcat Connectors
Classification: Unclassified
Component: mod_jk (show other bugs)
Version: 1.2.28
Hardware: PC Linux
: P2 normal (vote)
Target Milestone: ---
Assignee: Tomcat Developers Mailing List
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2009-05-19 15:06 UTC by Joe Kislo
Modified: 2010-02-23 02:56 UTC (History)
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Description Joe Kislo 2009-05-19 15:06:22 UTC 
Changes made to ping_timeout via Status Worker not synced across Apache Children

Configure Apache to use the mpm_worker, and start 2 children by default

Access the Status Worker, and change the "Ping Timeout:" on a worker.  EG: Change it from 10000 to 15000

Query the status worker using a non-keepalived webbrowser (such as curl) and see what the setting is set to.  It will alternate between the OLD setting and the NEW setting.  EG:

curl "http://SERVERNAMEHERE/ajpstatus?cmd=show&w=WORKERNAMEHERE&mime=txt"
-> First request returned 10000 (the 'old' value)

curl "http://SERVERNAMEHERE/ajpstatus?cmd=show&w=WORKERNAMEHERE&mime=txt"
-> Second request returned 15000 (the 'new' value)

If you change another value, such as 'Retries', your change will by synced across the children
Comment 1 Joe Kislo 2009-05-19 15:07:26 UTC 
This bug seems simple now, but it caused alot of head banging for me.  I didn't realize that it was just this one parameter; I was assuming it was ALL parameters that weren't being synced, and I kept looking for problems with my Shm file.  It wasn't until I was writing this bug report I discovered it appears (although I didn't throughly test) that it's just this one parameter
Comment 2 Rainer Jung 2009-05-20 04:08:02 UTC 
I will investigate.
Comment 3 Mladen Turk 2009-12-21 03:47:10 UTC 
Fixed in the SVN by adding ping_timeout to the shared memory
Comment 4 Rainer Jung 2010-02-23 02:56:24 UTC 
Will be part of 1.2.29.