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
> --
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> Phone EN: +44 (0)1332 898 999
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>
> -----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
>
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