On Wed, Aug 4, 2010 at 12:56 AM, Brett Delle Grazie <[email protected]> wrote: > Hi, > > I have two nodes (RHEL 5.5) configured in a cluster > (Corosync/Pacemaker). > > I have an IPaddr2 and Apache resources configured as clones on those > systems (configuration is shown below). > > The IPaddr2 is configured for load balancing using ClusterIP with hash > sourceip. > > My problem is that when failing back the ClusterIP after an initial > failure test the cluster no longer receives traffic even though the > ClusterIP appears to fail back correctly. > > Test as follows: > > 1. Test initial failure by adding location constraint to one node - this > moves all ClusterIP elements to the opposing node: > e.g. location loc_test cl_ipclust_0 -inf: node2 (will cause ClusterIP > to move to node 1) > > 2. Observe in web browser traffic is still being sent to Apache and > responses returned correctly > > 3. Now delete the test constraint and the ClusterIP will return back to > node 2. (confirmed with ifconfig, cat /proc/net/ipt_CLUSTER/192.168.0.10 > on both nodes - nodes respond with correct 'id', ping on both nodes to > cluster IP resolves correctly) > > 4. Attempt to connect with web-browser to ClusterIP and this fails > > 5. Restart Apache clone and retry - still doesn't work > > The only way I can restore traffic is to stop the ClusterIP clone, wait > a few seconds (5-10) and start it again. > > Anyone have any idea why this might be?
An ARP issue perhaps? > > Any advice appreciated. > > Thanks, > > Configuration as follows: > > node node1 > node node2 > primitive apache_0 ocf:heartbeat:apache \ > params configfile="/etc/httpd/conf/httpd.conf" > httpd="/usr/sbin/httpd.worker" > statusurl="http://localhost/server-status"; > envfiles="/etc/sysconfig/httpd" \ > op start interval="0" timeout="40" \ > op stop interval="0" timeout="60" \ > op monitor interval="10" timeout="40" > primitive ipclust_0 ocf:intact:IPaddr2 \ > params ip="192.168.0.10" nic="eth0" iflabel="1" > clusterip_hash="sourceip" \ > op monitor interval="10" timeout="5" > clone cl_apache0 apache_0 \ > meta globally_unique="false" interleave="true" > clone cl_ipclust_0 ipclust_0 \ > meta globally-unique="true" interleave="true" clone-node-max="2" > clone-max="2" notify="true" \ > params resource-stickiness="0" > > RHEL 5.5, kernel 2.6.18-194.8.1.el5 x86_64 > Corosync 1.2.7-1.1.el5 > Pacemaker 1.0.9.1-1.15.el5 > resource-agents 1.0.3-2.6.el5 > > > -- > Best Regards, > > Brett Delle Grazie > > ______________________________________________________________________ > This email has been scanned by the MessageLabs Email Security System. > For more information please visit http://www.messagelabs.com/email > ______________________________________________________________________ > _______________________________________________ > Linux-HA mailing list > [email protected] > http://lists.linux-ha.org/mailman/listinfo/linux-ha > See also: http://linux-ha.org/ReportingProblems > _______________________________________________ Linux-HA mailing list [email protected] http://lists.linux-ha.org/mailman/listinfo/linux-ha See also: http://linux-ha.org/ReportingProblems
