I'm not seeing that capability of the Cisco CSM unfortunately.
-----Original Message-----
From: Action Request System discussion list(ARSList)
[mailto:[email protected]] On Behalf Of [email protected]
Sent: Friday, December 10, 2010 12:28 PM
To: [email protected]
Subject: Re: Load Balancers and how?
Some Load Balancers are able to snmp checks. I've found that this works
pretty well with arsnmpd.
-Dave
LJ LongWing
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**
Dave,
I also have similar monitoring on the app/db/web servers…but that doesn’t
solve the problem of having two app servers with a load balancer sitting in
front of them, and ensuring that if node 1 goes offline, that the load
balancer will stop sending traffic to it…that’s what I’m needing.
From: Action Request System discussion list(ARSList) [
mailto:[email protected]] On Behalf Of Shellman, David
Sent: Friday, December 10, 2010 9:37 AM
To: [email protected]
Subject: Re: Load Balancers and how?
**
LJ,
Here are a few approaches that can be used.
A product called SiteScope can be configured to access a form through the
MidTier. This gives you end to end up/down information.
We also use HP OpenView to monitor the services on the MidTier, app and
Database servers. We also monitor the arerror, stderr.log and stdout log
files on the app server, the Oracle logs on the DB server and the MidTier
log files on the MidTier servers.
I have also created a health check for email services. This simply sends
an email out of the system to one of two email addresses we use for
incoming ticket generation. The email creates a record in a receiving form
that when the record is created updates the record on the sending form. If
the record on the sending form does not generate within a specific time
period an escalation will send us email and page us.
Dave
From: Action Request System discussion list(ARSList) [
mailto:[email protected]] On Behalf Of LJ LongWing
Sent: Friday, December 10, 2010 11:12 AM
To: [email protected]
Subject: Re: Load Balancers and how?
**
Roger,
What method did they use to determine it was started/running? I personally
have found ‘other teams’ don’t usually have a concept of what ‘functional’
means in a remedy world. I don’t consider the fact that arserver.exe is in
memory an indicator that my server is functional…I’ve had TOO many
situations where it was in memory, but you couldn’t log onto it.
From: Action Request System discussion list(ARSList) [
mailto:[email protected]] On Behalf Of Roger Justice
Sent: Friday, December 10, 2010 9:00 AM
To: [email protected]
Subject: Re: Load Balancers and how?
** I was able to have the group that configured the load balancer determine
if the Remedy Service was started/running.
-----Original Message-----
From: LJ LongWing <[email protected]>
To: arslist <[email protected]>
Sent: Fri, Dec 10, 2010 10:51 am
Subject: Load Balancers and how?
**
Ok….I’m going down a road that I KNOW some of you have travelled before, I
need your travel tips. We are setting up a server group on 7.5 Windows and
we are putting a load balancer in front of it. How do you all tell if a
node is up? There are 4 types of probes that I’m being told are available…
PING
HTTP
TCP
Script
Ping - Obviously doesn’t tell you anything other than the host OS is up
HTTP - Won’t work for telling if a remedy service is up
TCP – My instincts are telling me that this one simply does something
similar to a telnet to a given port, if the port allows you ‘in’, then the
service is considered up. I don’t consider this one viable because it
doesn’t ‘test’ much and I expect that my remedy server could respond to the
port request without actually being functional
Script – This one is the most promising in my mind, but I know nothing
about the scripting language of TCL.
How does the rest of the remedy world ‘verify’ that their remedy instance
is online so that their load balancer can know to route traffic to it or
not. I just this week finished a java servlet that allows the mid tier
load balancer to know if an individual node is working properly, but the
same can’t be said yet for Remedy….any and all help is appreciated
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