Re: LVS backup router not taking role
Khapare Joshi <[email protected]> Wed, 18 Jan 2012 15:58:56 +0000
| Newsgroups | gmane.linux.redhat.piranha |
|---|---|
| Message-ID | <CABHhH+sAbAjtK83fUxVU2wYiXg2gY=bdZ3_33++x-jEF8n-XoQ@mail.gmail.com> |
--===============8787617445641536531== Content-Type: multipart/alternative; boundary=f46d040839556de9e704b6cf860e --f46d040839556de9e704b6cf860e Content-Type: text/plain; charset=ISO-8859-1 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 > > > > I configured these parameter as this : > Heartbeat interval (seconds): Assume dead after (seconds): Heartbeat runs on port: Monitor NIC links for failures: Syncdaemon: and copied lvs.cf to redudant server as well. > > > 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 ?] > I have two servers for lvs i.e lvs1 lvs2 and configured using piranha tool. I started pulse on these two machines. Rest of other four server I only started httpd not the pulse > > 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] > https://www.redhat.com/mailman/listinfo/piranha-list > --f46d040839556de9e704b6cf860e Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable <br><br><div class=3D"gmail_quote">On Wed, Jan 18, 2012 at 1:59 PM, Ranjith= Rajaram <span dir=3D"ltr"><<a href=3D"mailto:[email protected]">rraja= [email protected]</a>></span> wrote:<br><blockquote class=3D"gmail_quote" s= tyle=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> I configured these parameter as this=A0 :<br></div></div></blockquote><= div><table><tbody><tr><td>Heartbeat interval (seconds):</td> <td><input name=3D"hb_interval" size=3D"5" value=3D"2" type=3D"TEXT"> </td> </tr> <tr> <td>Assume dead after (seconds):</td> <td><input name=3D"dead_after" size=3D"5" value=3D"10" type=3D"TEXT"> = </td> </tr> <tr> <td>Heartbeat runs on port:</td> <td><input name=3D"hb_port" size=3D"5" value=3D"539" type=3D"TEXT"> </= td> </tr> <tr> <td>Monitor NIC links for failures:</td> <td><input name=3D"monitor_links" checked type=3D"checkbox"> </td> </tr> <tr> <td>Syncdaemon:</td> <td><input name=3D"syncdaemon" checked type=3D"checkbox"></td></tr></tbo= dy></table><br>and copied <a href=3D"http://lvs.cf">lvs.cf</a> to redudant = server as well. <br></div><blockquote class=3D"gmail_quote" style=3D"margin= :0pt 0pt 0pt 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"= > <div bgcolor=3D"#ffffff" text=3D"#000000"><div class=3D"im"> <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's ? [Are you running pulse on any of the two real server's ?]<br></div>= </blockquote><div><br>I have two servers for lvs i.e lvs1 lvs2 and configur= ed using piranha tool. I started pulse on these two machines. Rest of other= four server I only started httpd not the pulse=A0 <br> </div><blockquote class=3D"gmail_quote" style=3D"margin:0pt 0pt 0pt 0.8ex;b= order-left:1px solid rgb(204,204,204);padding-left:1ex"><div bgcolor=3D"#ff= ffff" text=3D"#000000"> <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> _______________________________________________ Piranha-list mailing list <a href=3D"mailto:[email protected]" target=3D"_blank">Piranha-list@r= edhat.com</a> <a href=3D"https://www.redhat.com/mailman/listinfo/piranha-list" target=3D"= _blank">https://www.redhat.com/mailman/listinfo/piranha-list</a></pre> </blockquote> <br> <pre cols=3D"72"></pre> </div> <br>_______________________________________________<br> Piranha-list mailing list<br> <a href=3D"mailto:[email protected]">[email protected]</a><br> <a href=3D"https://www.redhat.com/mailman/listinfo/piranha-list" target=3D"= _blank">https://www.redhat.com/mailman/listinfo/piranha-list</a><br></block= quote></div><br> --f46d040839556de9e704b6cf860e-- --===============8787617445641536531== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ Piranha-list mailing list [email protected] https://www.redhat.com/mailman/listinfo/piranha-list --===============8787617445641536531==--