Messaging Solutions in a Linux Environment

68 Messaging Solutions in a Linux Environment

Example 3-17 /proc/drbd output

version: 0.6.12 (api:64/proto:62)

0: cs:Connected st:Primary/Secondary ns:40 nr:0 dw:16 dr:39 pe:0 ua:0

1: cs:Connected st:Secondary/Primary ns:484 nr:10 dw:21 dr:511 pe:0 ua:0

Example 3-18 shows the drbd system in a failover situation with the other node

down. See the drbd documentation for more information about the counters and

possible status codes available here.

Example 3-18 /proc/drbd output: failover

version: 0.6.12 (api:64/proto:62)

0: cs:WFConnection st:Primary/Unknown ns:4061 nr:0 dw:166 dr:3930 pe:0 ua:0

1: cs:WFConnection st:Primary/Unknown ns:484 nr:10 dw:23 dr:511 pe:0 ua:0

3.2.9 HA configuration summary

In summary, our high availability configuration looks like Table 3-1:

Table 3-1 Overview of IP address and filesystems in different situations

3.3 Installing and configuring WebSphere MQ

This section provides an outline of a WebSphere MQ installation on Linux.

Node(s) Up: IP Addresses: Mounted Filesystems:

wmq1 and wmq2 wmq1 - 192.168.10.101

wmq2 - 192.168.10.102

wmq1 - /var/mqm/wmq1

wmq2 - /var/mqm/wmq2

wmq1 only wmq1 - 192.168.10.101

wmq1 - 192.168.10.102

wmq1 - /var/mqm/wmq1

wmq1 - /var/mqm/wmq2

wmq2 only wmq2 - 192.168.10.102

wmq2 - 192.168.10.101

wmq2 - /var/mqm/wmq2

wmq2 - /var/mqm/wmq1

Tip: The complete installation guide should be followed. Download the latest

available guide, WebSphere MQ for Linux V5.3 Quick Beginnings, from:

http://publibfp.boulder.ibm.com/epubs/pdf/amq1ac03.pdf

In addition, it is strongly recommended that you review the readme file

included with the software delivery for late changes.