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Section 2.3.1, “Enabling IP Ports on Cluster Nodes”

Section 2.3.2, “ Enabling IP Ports on Computers That Run lu ci”

2.3.1. Enabling IP Port s on Clust er Nodes

To allow Red Hat Cluster nodes to communicate with each other, you must enable the IP ports

assigned to certain Red Hat Cluster components. Table 2.1, “Enabled IP Ports on Red Hat Cluster

Nodes” lists the IP port numbers, their respective protocols, and the components to which the port

numbers are assigned. At each cluster node, enable IP ports according to Table 2.1, “Enabled IP

Ports on Red Hat Cluster Nodes” .

Note

IPV6 is not supported for Cluster Suite in Red Hat Enterprise Linux 5.

T ab le 2.1. En ab led IP Po rt s o n Red H at Clu st er N o d es

IP Po rt N u mb er Pro t o co l Co mpo n en t

5404, 5405 UDP

cman

(Cluster Manager)

11111 TCP

ricci

(part of

Co n g a

remote agent)

14567 TCP

gnbd

(Global Network Block Device)

16851 TCP

modclusterd

(part of

Co n g a

remote agent)

21064 TCP

dlm

(Distributed Lock Manager)

50006, 50008,

50009

TCP

ccsd

(Cluster Configuration System daemon)

50007 UDP

ccsd

(Cluster Configuration System daemon)

Note

Table 2.1, “ Enabled IP Ports on Red Hat Cluster Nodes” shows no IP ports to enable for

rgmanager. For Red Hat Enterprise Linux 5.1 and later, rgmanager does not use TCP or

UDP sockets.

2.3.2. Enabling IP Port s on Comput ers T hat Run luci

To allow client computers to communicate with a computer that runs lu ci (the Co n g a user interface

server), and to allow a computer that runs lu ci to communicate with ricci in the cluster nodes, you

must enable the IP ports assigned to lu ci and ricci. Table 2.1, “Enabled IP Ports on Red Hat Cluster

Nodes” lists the IP port numbers, their respective protocols, and the components to which the port

numbers are assigned. At each computer that runs lu ci, enable IP ports according to Table 2.2,

“ Enabled IP Ports on a Computer That Runs luci” .

Note

If a cluster node is running lu ci, port 11111 should already have been enabled.

⁠Chapt er 2 . Before Config uring a Red Hat Clust er