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 -
wmq2 -
wmq1 - /var/mqm/wmq1
wmq2 - /var/mqm/wmq2
wmq1 only wmq1 -
wmq1 -
wmq1 - /var/mqm/wmq1
wmq1 - /var/mqm/wmq2
wmq2 only wmq2 -
wmq2 -
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:
In addition, it is strongly recommended that you review the readme file
included with the software delivery for late changes.

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