Re: LVS backup router not taking role

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Hi

After playing around and re-install the test environment fail over seems
working i.e backup server takes over. But new problem is I configured two
read server to host the web service, which seem working for a while then
after a while my active lvs router is only point to me one Real server.
Then I restart pulse again and seem to to be working again for some time.
what is causing this problem

hereis my ipvsadm -L -n

[roottest]# ipvsadm -L -n
IP Virtual Server version 1.2.1 (size=4096)
Prot LocalAddress:Port Scheduler Flags
  -> RemoteAddress:Port           Forward Weight ActiveConn InActConn
TCP  192.168.1.1:80 wlc
  -> 192.168.1.2:80           Route   1      0          15
  -> 192.168.1.3:80           Route   1      0          15

K

On Wed, Jan 18, 2012 at 1:59 PM, Ranjith Rajaram <[email protected]>wrote:

> **
>
>
> On 01/18/2012 07:22 PM, Khapare Joshi wrote:
>
> Hi, all,
>
> first time poster. I recently deployed lvs (primary and backup) with
> piranh and ran into few issues. I turned off the primary lvs to see backup
> lvs will take over. However it does not take over right a way seem require
> restart pulse. How does this fail over works if primary goes down ? should
> not this be happen right a way if primary lvs goes down ?
>
> If primary goes, secondary has to take it over
>
> It depends on deadtime
>
>  deadtime = n
>               Length of time before a node is declared dead and IP
> takeover occurs.
>
> lvs.cf needs to be checked together with system configuration.  Look at
> /var/log/messages
>
>
>
>
>
>
> And I have four real server- and it sees if one goes down whole system is
> unavailable (httpd service). Then I restart pulse and get  the httpd
> service. I do not think this is right. could be please guide me in right
> direction to make reliable.
>
>
> Do you have separate boxes for LVS directors and real server's ? [Are you
> running pulse on any of the two real server's ?]
>
> check the output of ipvsadm -L -n from the active lvs server [paste it
> here]
>
>
> PS: I use direct routing and have
>
> net.ipv4.conf.lo.arp_ignore = 1
> net.ipv4.conf.lo.arp_announce = 2
>
> in /etc/sysctl.conf
>
> sorry for too many question.
>
> Thanks
>
>
> _______________________________________________
> Piranha-list mailing [email protected]://www.redhat.com/mailman/listinfo/piranha-list
>
>
>
> _______________________________________________
> Piranha-list mailing list
> [email protected]
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>

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Hi <br><br>After playing around and re-install the test environment fail ov=
er seems working i.e backup server takes over. But new problem is I configu=
red two read server to host the web service, which seem working for a while=
 then after a while my active lvs router is only point to me one Real serve=
r. Then I restart pulse again and seem to to be working again for some time=
. what is causing this problem<br>
<br>hereis my ipvsadm -L -n <br><br>[roottest]# ipvsadm -L -n<br>IP Virtual=
 Server version 1.2.1 (size=3D4096)<br>Prot LocalAddress:Port Scheduler Fla=
gs<br>=A0 -&gt; RemoteAddress:Port=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 Forward We=
ight ActiveConn InActConn<br>
TCP=A0 <a href=3D"http://192.168.1.1:80">192.168.1.1:80</a> wlc<br>=A0 -&gt=
; <a href=3D"http://192.168.1.2:80">192.168.1.2:80</a>=A0=A0=A0=A0=A0=A0=A0=
=A0=A0=A0 Route=A0=A0 1=A0=A0=A0=A0=A0 0=A0=A0=A0=A0=A0=A0=A0=A0=A0 15=A0=
=A0=A0=A0=A0=A0=A0 <br>=A0 -&gt; <a href=3D"http://192.168.1.3:80">192.168.=
1.3:80</a>=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 Route=A0=A0 1=A0=A0=A0=A0=A0 0=A0=
=A0=A0=A0=A0=A0=A0=A0=A0 15=A0=A0=A0 <br>
<br>K<br><br><div class=3D"gmail_quote">On Wed, Jan 18, 2012 at 1:59 PM, Ra=
njith Rajaram <span dir=3D"ltr">&lt;<a href=3D"mailto:[email protected]">=
[email protected]</a>&gt;</span> wrote:<br><blockquote class=3D"gmail_quo=
te" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"=
>
<u></u>

 =20
   =20
 =20
  <div bgcolor=3D"#ffffff" text=3D"#000000"><div class=3D"im">
    <br>
    <br>
    On 01/18/2012 07:22 PM, Khapare Joshi wrote:
    <blockquote type=3D"cite">
     =20
      Hi, all,<br>
      <br>
      first time poster. I recently deployed lvs (primary and backup)
      with piranh and ran into few issues. I turned off the primary lvs
      to see backup lvs will take over. However it does not take over
      right a way seem require restart pulse. How does this fail over
      works if primary goes down ? should not this be happen right a way
      if primary lvs goes down ?<br>
    </blockquote></div>
    If primary goes, secondary has to take it over<br>
    <br>
    It depends on deadtime<br>
    <br>
    =A0deadtime =3D n<br>
    =A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 Length of time before a node is=
 declared dead and IP
    takeover occurs.<br>
    <br>
    <a href=3D"http://lvs.cf" target=3D"_blank">lvs.cf</a> needs to be chec=
ked together with system configuration.=A0 Look
    at /var/log/messages<div class=3D"im"><br>
    <br>
    <br>
    <br>
    <br>
    <blockquote type=3D"cite">
      <br>
      And I have four real server- and it sees if one goes down whole
      system is unavailable (httpd service). Then I restart pulse and
      get=A0 the httpd service. I do not think this is right. could be
      please guide me in right direction to make reliable.<br>
      <br>
    </blockquote>
    <br></div>
    Do you have separate boxes for LVS directors and real server&#39;s ?
    [Are you running pulse on any of the two real server&#39;s ?]<br>
    <br>
    check the output of ipvsadm -L -n from the active lvs server [paste
    it here]<br>
    <br>
    <br>
    <blockquote type=3D"cite"><div class=3D"im">PS: I use direct routing an=
d have <br>
      <br>
      net.ipv4.conf.lo.arp_ignore =3D 1<br>
      net.ipv4.conf.lo.arp_announce =3D 2<br>
      <br>
      in /etc/sysctl.conf<br>
      <br>
      sorry for too many question.<br>
      <br>
      Thanks
      </div><pre><fieldset></fieldset>
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_blank">https://www.redhat.com/mailman/listinfo/piranha-list</a></pre>
    </blockquote>
    <br>
    <pre cols=3D"72"></pre>
  </div>

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