Hi johnny Are you using nagios (within ZLB) to monitor servers or externally on another box.
I would have been less bothered about monitoring, other than over the last few days I have seen a number of failures and ZLB disguises the fault, certainly on the summary screen. The beauty of a load balancer is to offer system continuity during a fault. But without useful warning/alerting this situation can be worse than a single server failure. Ta Nick Sent from my BlackBerry, sorry for the short reply. Nick -----Original Message----- From: "Johnny Handsome" <[email protected]> Cc: <[email protected]> Sent: 20/02/2012 23:19:42 Subject: Re: [Zenloadbalancer-support] Enhancement request -Farm Monitoring/SMTP Hello, I would agree with Emilio and crew, it shouldn't be on zen to monitor the status of servers. I would recommend that a 2nd nic be but in servers and utilize that subnet to manage and monitor your servers. For example I have 3 nicks in each server 1 for the zen farm network 1 for my management access for the box 1 as a spare I also run nagios that monitors various aspects of each of my real servers and alerts me if there is a failure or issue with the box or a service on the box. So on my boxes I monitor the apache services and MySQL services. Johnny On 2012-02-20, at 1:39 PM, "Emilio Campos" <[email protected]> wrote: > Hi Nick, At the moment we aren't going to develope a method to indicate the > users that a backends or a farms are down. As Marco wrote in other mail it is > work for your monitoring solution. But by other hand I think that your > proposal of indicate the backend status (how many are dead, how many are OK > or how many are in maintenance mode) in the global farm view is very > interesting, we are going to try to develope in new version > > Regards! > > 2012/2/20 Marco Tiggelaar - Key4ce <[email protected]> > Actually.. "dedicated" monitoring's can be very cheap - and for those with a > Virtual environment --> you can run them with as little as 512 mb for each. > That aside for me it's mostly what is required to send out mails (postfix > etc) that ups the resources (every bit counts ;)) > > i do agree for some specially small environments it will be beneficial but it > should be some form of an option (if not for the resources then for double > mails on errors ;)) > > For the colors part i really haven't got much of an idea yet.. we have only > experimented with zen for a little bit.. and are currently waiting for NAT > support. > (as anti-spam/ fail2ban/ etc can't work with sNAT so that means our servers > have to run less secure in case we want to use loadbalancer with sNAT at this > point - can't afford that with daily brute force attempts and 1000's of spams > ^^) > > Little side note: hopefully NAT will be supported before Juli (thats when our > new environment will launch.. hoping to do that with a zen loadbalancer to go > with it haha :) > > Regards, > Marco > -- > Key4ce General Manager > --------------------------------------------------- > Phone NL: +31 (0)40 290 3310 > Phone EN: +44 (0)1332 898 999 > > Italielaan 9 > Eindhoven > The Netherlands > --------------------------------------------------- > http://www.key4ce.com > > -----Original Message----- > From: Nick Furnell <[email protected]> > Reply-to: Nick Furnell <[email protected]> > To: [email protected] > Subject: Re: [Zenloadbalancer-support] Enhancement request - Farm > Monitoring/SMTP > Date: Mon, 20 Feb 2012 17:21:55 +0000 > > Hi All I understand the concerns about overloading ZLB by adding monitoring > tools, and the benefits of using external 'dedicated' monitoring equipment - > but we are not large enough to have that level of monitoring, but benefit > massively from the load balancing ZLB offers. So a simple SMTP report on > exception changes to Farm status, 'real' server availability, FarmGuardian > triggers - would be helpful. Even if this SMTP feed can't cant be done, how > about a series of colours? We already have RED for OFF, GREEN for ON, YELLOW > for MAINTENANCE... how about BLUE for 'FarmGuardian fault'? I think a quick > the summary screen could also display a quick count - maybe a percentage of > 'availability' ? eg Example Farm A - 5 real servers, 1 in maintenance mode, 1 > with FarmGuardian fault -> would show 60% available What do you think? 3 > greens 1 yellow 1 blue Nick > > Transform Medical Group (CS) Limited. > Registered in England & Wales with Company Number: 3228476 > Registered office: 192 Altrincham Road, Manchester M22 4RZ > > Transform Medical Group(CS) is registered in England and Wales, number > 3228476. The registered office is at 192 Altrincham Road, Manchester, M22 > 4RZ. The information contained in this electronic message and any attachments > (the "Message") is intended for one or more specific individuals or entities, > and may be confidential, proprietary, privileged or otherwise protected by > law. If you are not the intended recipient, please notify the sender > immediately, delete this Message and do not disclose, distribute, or copy it > to any third party or otherwise use this Message. Electronic messages are not > secure or error free and can contain viruses or may be delayed, and the > sender is not liable for any of these occurrences. The sender reserves the > right to monitor, record and retain electronic messages. > > > ------------------------------------------------------------------------------ > Try before you buy = See our experts in action! > The most comprehensive online learning library for Microsoft developers > is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, > Metro Style Apps, more. 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Free future releases when you subscribe now! > http://p.sf.net/sfu/learndevnow-dev2 > _______________________________________________ > Zenloadbalancer-support mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/zenloadbalancer-support Transform Medical Group (CS) Limited. Registered in England & Wales with Company Number: 3228476 Registered office: 192 Altrincham Road, Manchester M22 4RZ Transform Medical Group(CS) is registered in England and Wales, number 3228476. The registered office is at 192 Altrincham Road, Manchester, M22 4RZ. The information contained in this electronic message and any attachments (the "Message") is intended for one or more specific individuals or entities, and may be confidential, proprietary, privileged or otherwise protected by law. If you are not the intended recipient, please notify the sender immediately, delete this Message and do not disclose, distribute, or copy it to any third party or otherwise use this Message. Electronic messages are not secure or error free and can contain viruses or may be delayed, and the sender is not liable for any of these occurrences. The sender reserves the right to monitor, record and retain electronic messages. ------------------------------------------------------------------------------ Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d _______________________________________________ Zenloadbalancer-support mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/zenloadbalancer-support
