Environment:
Servers Alive Enterprise 6.1.2127
Windows 2003 Server on a VMWare virtual machine
No domains
Problem:
About 2 months ago I upgraded from version 5 to version 6 and have
experienced many situations where Servers Alive appears to hang. It is
in the middle of a check cycle and it fails to come back from a check.
The user interface remains responsive, but the process shows 90%+ CPU
utilization, and nothing further gets logged to the log file. If you
use the user interface to close, it does prompt with "Are you sure you
want to exit Servers Alive?" After responding yes, the user interface
exits, but the process remains, still using 90%+ CPU.
I have been recording the items it is checking to see if there is a
pattern, and the closest thing I've been able to see is:
URL check - down
URL check - in maintenance
ping check - up
Here are the records from 2 instances:
22-apr-2007 3:11 AM Check cycle 530
Supplier.agrium.com - URL - Maintenance
Agroutes Htdig - URL - Down
Webtrends server - Ping - OK
Fort Sask Replication check - URL - Maint
Carseland Replication check - URL - Maint
Redwater Replication Check - URL - Maint
Sodaweb1 Replication check - URL - Maint
Vanscoy Replication check - URL - Maint
West Sac replication check - URL - Maint
13-May-2007 3:xx Am Check Cycle 746
Supplier.agrium.com - URL - Maintenance
Agroutes Htdig - URL - Down
Webtrends server - Ping - OK
Carseland Replication check - URL - Maint
Fort Sask Replication check - URL - Maint
Redwater Replication Check - URL - Maint
Sodaweb1 Replication check - URL - Maint
Vanscoy Replication check - URL - Maint
West Sac replication check - URL - Maint
The instances shown above were from when I was using version 6.1.2093.
I upgraded to 6.1.2127 last week to see if the problem had been fixed,
but it happened again last night. Again, it was a URL check that was
down, some ping checks were running, and several checks in maintenance.
The URL that was down was set to alert with an email and XMPP. The log
file shows it establishing the connection then nothing until Servers
Alive is restarted.
When I restarted Servers Alive, it hung again at the same checks on the
first cycle. When I restarted again, it failed on check cycle 2. When
I restarted the next time, I set the known failed web server check to
maintenance and it ran OK all night.
I have the log files set to detailed and can provide them upon
request.
Thank you,
Brett Hanson
Systems Analyst, Agrium Inc.
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