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[Linux-cluster] rhcs x iptables



Hi there,

I have a Fedora 10 system with two KVM virtual machines, both running RHEL 5.2 and RHCS. The intent
is to prototype a cluster configuration for a customer.

The problem is, everything is fine unless I start iptables on the VMs. But it's unacceptable to run
the cluster without am OS-level firewall. The ports list on rhcs manuals, on the cluster project
wiki, and what I observe using netstat do not agree. None of them talks about port 5149 which I
observe being opened by aisexec (cman). And I don't see any use of ports 41966 through 41968 which
are supposed to be opened my rgmanager or 5404 by cman.

But even after I changed my iptables config to open all ports, I still canot relocate or failover
services between nodes.

I configured apache as a script service to play with cluster administration. My vms are on the
default KVM network, 192.168.122./24.

It's very strange system-config-cluster on node 1 shows both nodes (cs1 and cs2) joined the cluster
and starts my teste-httpd service, but node 2 doesn't show the status of any cluster service (on
system-config-cluster).

If I try to use clusvnadm to relocate the service from cs1 to cs2, it hangs. And I can't stop
rgmanager with iptables enabled. Flushing iptables doesn't help when cman and rgmanager were started
with iptables on.

Attached are my cluster.conf, /etc/sysconfig/iptables and netstat -anp


[]s, Fernando Lozano

Attachment: iptables
Description: Binary data

Attachment: cluster.conf
Description: Binary data

Conexões Internet Ativas (servidores e estabelecidas)
Proto Recv-Q Send-Q Local Address               Foreign Address             State       PID/Program name   
tcp        0      0 127.0.0.1:2208              0.0.0.0:*                   OUÇA       4624/hpiod          
tcp        0      0 0.0.0.0:738                 0.0.0.0:*                   OUÇA       4372/rpc.statd      
tcp        0      0 192.168.122.101:21064       0.0.0.0:*                   OUÇA       -                   
tcp        0      0 0.0.0.0:111                 0.0.0.0:*                   OUÇA       4328/portmap        
tcp        0      0 192.168.122.100:80          0.0.0.0:*                   OUÇA       6544/httpd          
tcp        0      0 127.0.0.1:631               0.0.0.0:*                   OUÇA       4667/cupsd          
tcp        0      0 0.0.0.0:50008               0.0.0.0:*                   OUÇA       5028/ccsd           
tcp        0      0 127.0.0.1:6010              0.0.0.0:*                   OUÇA       4951/0              
tcp        0      0 127.0.0.1:2207              0.0.0.0:*                   OUÇA       4629/python         
tcp        0      0 127.0.0.1:6010              127.0.0.1:33082             ESTABELECIDA4951/0              
tcp        0      0 127.0.0.1:60925             127.0.0.1:6010              ESTABELECIDA6121/python2        
tcp        0      0 127.0.0.1:6010              127.0.0.1:60925             ESTABELECIDA4951/0              
tcp        0      0 127.0.0.1:33082             127.0.0.1:6010              ESTABELECIDA4979/gedit          
tcp        0      0 ::1:50006                   :::*                        OUÇA       5028/ccsd           
tcp        0      0 :::22                       :::*                        OUÇA       4649/sshd           
tcp        0      0 ::1:6010                    :::*                        OUÇA       4951/0              
tcp        0      0 :::443                      :::*                        OUÇA       6544/httpd          
tcp        0      0 ::ffff:192.168.122.101:22   ::ffff:192.168.122.1:40891  ESTABELECIDA4951/0              
udp        0      0 0.0.0.0:32768               0.0.0.0:*                               4802/avahi-daemon:  
udp        0      0 192.168.122.101:5405        0.0.0.0:*                               5034/aisexec        
udp        0      0 192.168.122.101:5149        0.0.0.0:*                               5034/aisexec        
udp        0      0 239.192.13.142:5405         0.0.0.0:*                               5034/aisexec        
udp        0      0 0.0.0.0:732                 0.0.0.0:*                               4372/rpc.statd      
udp        0      0 0.0.0.0:735                 0.0.0.0:*                               4372/rpc.statd      
udp        0      0 0.0.0.0:5353                0.0.0.0:*                               4802/avahi-daemon:  
udp        0      0 0.0.0.0:111                 0.0.0.0:*                               4328/portmap        
udp        0      0 0.0.0.0:631                 0.0.0.0:*                               4667/cupsd          
udp        0      0 :::32769                    :::*                                    4802/avahi-daemon:  
udp        0      0 :::50007                    :::*                                    5028/ccsd           
udp        0      0 :::5353                     :::*                                    4802/avahi-daemon:  
raw        0      0 0.0.0.0:1                   0.0.0.0:*                   7           6424/rdisc          

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