Re: Healthchecking problem on Alteons

Hi,

I guess the original problem is referred to the server health check and not=
 to the sessions so increasing this value will not help.

It might help to increase the interval between health check attempts: =

 /cfg/slb/real <server number>/inter   =

Default is 2 seconds. It might be that the server is not responding fast en=
ough and increasing the interval will give a little more time.

This is just a supposition and the best way to understand the problem is ta=
king sniffer files and to check the error log files generated by the applic=
ation in the server itself.

Thanks,
Juan Carlos Ca=F1ete
EMEA Technical Consultant Radware-Alteon =


-----Mensaje original-----
De: [email protected] [mailto:[email protected]] En nombre de mat=
mane
Enviado el: mi=E9rcoles, 13 de enero de 2010 11:48
Para: [email protected]
Asunto: Re: [load balancing] Healthchecking problem on Alteons


Hi,

10 mins is the default timeout of session entry, i think you must increase
this value.

Command : /cfg/slb/real <server number>/tmout

eg : if you have 3 real servers , you need to define one tmout for each real
server :
 =

/cfg/slb/real 1/tmout 15
/cfg/slb/real 2/tmout 15
/cfg/slb/real 3/tmout 15

regards,

MATMANE.


sivakumar wrote:
> =

> Hi,
> =

> I have a cluster setup for https and https with real servers in it and the
> problem is one of the real server(real2) fails intermittently every 10
> mins and we couldn't find out why it happens. When I do a ping &
> Traceroute it works and the server is reachable. Could you tell me is
> there any way i could sort this out or any config that i missed needs to
> be configured. Let me know if you need any other info..
> =

> Here is the config below
> =

>  virt 240
>  240: IP4 203.x.x.x,   00:00:5e:0f:f1:f0, dname www.xyz.com
>     virtual ports:
>     http: rport http, group 240, HTTP, backup none, content
> //PRXYTREwww/LBhealth.txt, pbind cookie, rtspslb none, dbind
>       cookie name: PRXYTRE
>       cookie persistence mode: insert
>     inserted cookie expires with the session
>         real servers:
>          241: real1, backup none, 50 ms, group ena, up
>          242: real2, backup none, 24 ms, group ena, Failed
>          243: real3, backup none, 35 ms, group ena, up
>     https: rport https, group 241, HTTPS, backup none, pbind sslid,
> rtspslb none, dbind
>         real servers:
>          241: real1, backup none, 48 ms, group ena, up
>          242: real2, backup none, 22 ms, group ena, Failed
>          243: real3, backup none, 30 ms, group ena, up
> =

> =

>  242: real2, 00:14:5e:ff:0a:0a, vlan 9, port 9, health 4, Failed
>     rport 80, Failed
>     rport 443, Failed
>     Real server group 240 , Workload Manager none
>       Virtual services:
>       http: vport http, rtspslb none, pbind cookie
>       cookie name: PRXYTRE
>       cookie persistence mode: insert
>     inserted cookie expires with the session
>         virtual server: 240, IP4 203.x.x.x
>     Real server group 241 , Workload Manager none
>       Virtual services:
>       https: vport https, rtspslb none, pbind sslid
>         virtual server: 240, IP4 203.x.x.x
> =

> =

> Real server 242 stats:
> Real server failures:              4142
> Last time real server up:     20:38:32 Mon Jan 12, 2009
> Last time real server failed: 20:38:22 Mon Jan 12, 2009
> Health check attempts:           698982
> Health check failures:             8308
> Health check responses:          641778
> Last valid response time:         24194 usecs
> Average valid response time:      51967 usecs
> Longest valid response time:    9951033 usecs
> Health check type:           http
> Last SNMP HC response:
> Buddy Health check failures:          0
> Current sessions:                     1
> Total sessions:                   89415
> Highest sessions:                    58
> Octets:                      3639171273
> =

> =


-- =

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