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 _attend WWRUG11 <http://www.wwrug.com/> www.wwrug.com ARSlist: "Where the Answers Are"_ _attend WWRUG11 www.wwrug.com ARSlist: "Where the Answers Are"_ _attend WWRUG11 www.wwrug.com ARSlist: "Where the Answers Are"_ _attend WWRUG11 www.wwrug.com ARSlist: "Where the Answers Are"_ _______________________________________________________________________________ UNSUBSCRIBE or access ARSlist Archives at www.arslist.org attend wwrug11 www.wwrug.com ARSList: "Where the Answers Are"
