Hi,<div><br></div><div>The approach I would take to solve this is to write my own script that reads the information from /mnt/context/context.sh and configures the second IP for eth0. You can send this script along with the init.sh in the FILES attribute.</div>
<div><br></div><div>The script would be as simple as: ifconfig eth0:1 $IP_PUBLIC/$NETMASK up</div><div><br></div><div>regards,<br>Jaime</div><div class="gmail_extra"><br><br><div class="gmail_quote">On Thu, Oct 18, 2012 at 1:09 PM, Lim Kean Meng <span dir="ltr"><<a href="mailto:km.lim@mimos.my" target="_blank">km.lim@mimos.my</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div lang="EN-MY" link="blue" vlink="purple">
<div>
<p class="MsoNormal"><span style="color:#1f497d">I think I found why not any ip just bind to eth0, the ip must be defined in context.sh. In other words, the vm’s network do not recognize any other ip except the one define in context.sh, see below:<u></u><u></u></span></p>
<p class="MsoNormal"><span style="color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="color:#1f497d">Q: since I’ll need 2 ip to bind to the same interface on eth0, how do I force the 2<sup>nd</sup> ip to be registered into context.sh?<u></u><u></u></span></p>
<p class="MsoNormal"><span style="color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="color:#1f497d">root@one-dev04:/srv/cloud/one/var/262# more context.sh<u></u><u></u></span></p>
<p class="MsoNormal"><span style="color:#1f497d"># Context variables generated by OpenNebula<u></u><u></u></span></p>
<p class="MsoNormal"><span style="color:#1f497d">BROADCAST="10.4.104.255"<u></u><u></u></span></p>
<p class="MsoNormal"><span style="color:#1f497d">DNS="192.228.137.100"<u></u><u></u></span></p>
<p class="MsoNormal"><span style="color:#1f497d">FILES="/var/lib/one/vm-templates/ONE-centos/centos-init.sh"<u></u><u></u></span></p>
<p class="MsoNormal"><span style="color:#1f497d">GATEWAY="10.4.104.254"<u></u><u></u></span></p>
<p class="MsoNormal"><span style="color:#1f497d">HOSTNAME="CentOS-6.2-x64"<u></u><u></u></span></p>
<p class="MsoNormal"><span style="color:#1f497d">IP_PUBLIC="10.4.104.119"<u></u><u></u></span></p>
<p class="MsoNormal"><span style="color:#1f497d">NETMASK="255.255.255.0"<u></u><u></u></span></p>
<p class="MsoNormal"><span style="color:#1f497d">NETWORK="10.4.104.0"<u></u><u></u></span></p>
<p class="MsoNormal"><span style="color:#1f497d">TARGET="hdb"<u></u><u></u></span></p><div class="im">
<p class="MsoNormal"><span style="color:#1f497d"><u></u><u></u></span></p>
<p class="MsoNormal"><span style="color:#1f497d"><u></u> <u></u></span></p>
<div>
<p class="MsoNormal"><span lang="EN-US" style="color:#1f497d">Thanks and best regards.<u></u><u></u></span></p>
<p class="MsoNormal" align="center" style="text-align:center"><span lang="EN-US" style="color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1f497d">Lim<u></u><u></u></span></p>
</div>
<p class="MsoNormal"><span style="color:#1f497d"><u></u> <u></u></span></p>
</div><div>
<div style="border:none;border-top:solid #b5c4df 1.0pt;padding:3.0pt 0cm 0cm 0cm">
<p class="MsoNormal"><b><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> Lim Kean
Meng <br>
<b>Sent:</b> Wednesday, 17 October, 2012 4:50 PM<br>
<b>To:</b> '<a href="mailto:users@lists.opennebula.org" target="_blank">users@lists.opennebula.org</a>'<br>
<b>Subject:</b> keepalived: problem implementing virtual ip<u></u><u></u></span></p>
</div>
</div><div><div class="h5">
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">I want to setup a load balance to point to 2 VM in opennebula using keepalived, refer to <a href="http://ww.keepalived.org" target="_blank">ww.keepalived.org</a><u></u><u></u></p>
<p class="MsoNormal">I am having problem when implementing virtual ip or vip. <u></u>
<u></u></p>
<p class="MsoNormal">The vip which is actually an arbitrary ip in the same network can bind to my VM eth0 (this is the master server) and if the master is down, the vip will float and bind to the standby VM eth0.<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">But the vip cannot be ping from other VM except the VM that is binding the vip as below. Here my vip is 10.4.104.88 and my master and standby VM are 10.4.104.28 and 10.4.104.91 respectively, available below.<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">[root@DW-LB01-253 ~]# ping 10.4.104.88<u></u><u></u></p>
<p class="MsoNormal">PING 10.4.104.88 (10.4.104.88) 56(84) bytes of data.<u></u><u></u></p>
<p class="MsoNormal">64 bytes from <a href="http://10.4.104.88" target="_blank">10.4.104.88</a>: icmp_seq=1 ttl=64 time=0.127 ms<u></u><u></u></p>
<p class="MsoNormal">^C<u></u><u></u></p>
<p class="MsoNormal">--- 10.4.104.88 ping statistics ---<u></u><u></u></p>
<p class="MsoNormal">1 packets transmitted, 1 received, 0% packet loss, time 760ms<u></u><u></u></p>
<p class="MsoNormal">rtt min/avg/max/mdev = 0.127/0.127/0.127/0.000 ms<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">[root@DW-LB02-254 ~]# ping 10.4.104.88<u></u><u></u></p>
<p class="MsoNormal">PING 10.4.104.88 (10.4.104.88) 56(84) bytes of data.<u></u><u></u></p>
<p class="MsoNormal">^C<u></u><u></u></p>
<p class="MsoNormal">--- 10.4.104.88 ping statistics ---<u></u><u></u></p>
<p class="MsoNormal">1 packets transmitted, 0 received, 100% packet loss, time 804ms<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">[root@DW-LB01-253 ~]# ip add sh eth0<u></u><u></u></p>
<p class="MsoNormal">2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000<u></u><u></u></p>
<p class="MsoNormal"> link/ether 02:00:0a:04:68:1c brd ff:ff:ff:ff:ff:ff<u></u><u></u></p>
<p class="MsoNormal"> inet <a href="http://10.4.104.28/24" target="_blank">10.4.104.28/24</a> brd 10.4.104.255 scope global eth0<u></u><u></u></p>
<p class="MsoNormal"> inet <a href="http://10.4.104.88/32" target="_blank">10.4.104.88/32</a> scope global eth0<u></u><u></u></p>
<p class="MsoNormal"> inet6 fe80::aff:fe04:681c/64 scope link<u></u><u></u></p>
<p class="MsoNormal"> valid_lft forever preferred_lft forever<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">[root@DW-LB02-254 ~]# ip add sh eth0<u></u><u></u></p>
<p class="MsoNormal">2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000<u></u><u></u></p>
<p class="MsoNormal"> link/ether 02:00:0a:04:68:5b brd ff:ff:ff:ff:ff:ff<u></u><u></u></p>
<p class="MsoNormal"> inet <a href="http://10.4.104.91/24" target="_blank">10.4.104.91/24</a> brd 10.4.104.255 scope global eth0<u></u><u></u></p>
<p class="MsoNormal"> inet6 fe80::aff:fe04:685b/64 scope link<u></u><u></u></p>
<p class="MsoNormal"> valid_lft forever preferred_lft forever<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1f497d">Thanks and best regards.<u></u><u></u></span></p>
<p class="MsoNormal" align="center" style="text-align:center"><span lang="EN-US" style="color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1f497d">Lim<u></u><u></u></span></p>
<p class="MsoNormal"><u></u> <u></u></p>
</div></div></div>
</div>
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<br></blockquote></div><br></div><br clear="all"><div><br></div>-- <br>Jaime Melis<br>Project Engineer<br>OpenNebula - The Open Source Toolkit for Cloud Computing<br><a href="http://www.OpenNebula.org" target="_blank">www.OpenNebula.org</a> | <a href="mailto:jmelis@opennebula.org" target="_blank">jmelis@opennebula.org</a><br>