<html><body><div style="color:#000; background-color:#fff; font-family:times new roman, new york, times, serif;font-size:12pt"><div>Primary concern is high availability only . </div><div> </div> <div style="font-family: times new roman, new york, times, serif; font-size: 12pt;"> <div style="font-family: times new roman, new york, times, serif; font-size: 12pt;"> <div dir="ltr"> <hr size="1"> From: Digimer <lists@alteeve.ca> To: Zama Ques <queszama@yahoo.in>; linux clustering <linux-cluster@redhat.com> Sent: Tuesday, 26 June 2012 10:52 PM Subject: Re: [Linux-cluster] Clarifications needed on Setting up a two node HA cluster </div> Is your primary concern load balancing or high availability? On 06/26/2012 10:36 AM, Zama Ques wrote: > Hi , > > I need to setup a two node HA cluster on top of HP blade servers using > Redhat Cluster Solution. I have started going through the docs and have > the following doubts as of now. > > I am planning to build my two node setup based on the following > architecture as shown in Fig 1.1 in > <a href="http://www.centos.org/docs/5/pdf/Cluster_Administration.pdf" target="_blank">http://www.centos.org/docs/5/pdf/Cluster_Administration.pdf</a> > > > > As per t'he above fig, I am planning to build my setup as per the > following . > > 1) Each of the nodes will have two interfaces. One interface say eth0 on > both the nodes will be assigned private addresses and > will be connected to a switch which will be used for cluster > traffic.The other interface on both the nodes say eth1 will be > assigned public ip address and will be connected to another switch > which is connected to internet via a firewall/router . I > will also be assigning a virtual public ip address to the cluster > by configuring a ip resource in conga. This ip address I > will add it to Listen directive in apache configuration file so > that apache listens on this ip address only to serve client > requests. This ip address will also resolve to a registered domain > name for our portal which we are going to serve by this > setup. > > And as a prerequisite for conga setup , I will update /etc/hosts on > both nodes by supplying FQDNs > corresponding to private ip address assigned earlier on eth0 on both > the nodes. > > 2) Regarding storage , I am not sure as of now what kind of storage > device will be used . If it is not a SAN storage > than I will configure one of the partitions on the storage as iscsi > target and will share it to both the cluster nodes. > From both the cluster nodes , I will create volumes using clvm and will > use GFS on top of it as file system . > > 3)Regarding cluster resource , we will be using apache as one of the > resource to serve http traffic. Will configure apache > using Conga and after configuration is done , will copy the httpd config > file manually to the other cluster node . Will not > start apache service on both cluster nodes and will leave it to cluster > software to start services . Will also do chkconfig > httpd off on both the nodes and will also not update /etc/fstab with the > GFS file system leaving it to cluster node to handle > mounting of a file system. > > Sorry for writing too lenghthy , but want to clear my doubts before > starting up. > > Will be very much grateful if members can read my long mail with > patience and reply back whether I am going in the right direction. > > > Thanks in Advance > Zaman > > > > > > > > -- > Linux-cluster mailing list > <a ymailto="mailto:Linux-cluster@redhat.com" href="mailto:Linux-cluster@redhat.com">Linux-cluster@redhat.com</a> > <a href="https://www.redhat.com/mailman/listinfo/linux-cluster" target="_blank">https://www.redhat.com/mailman/listinfo/linux-cluster</a> > -- Digimer Papers and Projects: <a href="https://alteeve.com/" target="_blank">https://alteeve.com</a> </div> </div> </div></body></html>