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IBM MQ RDQM Patching Guide: The hidden kernel-module dependency that can stop HA queue managers Why this IBM MQ RDQM Patching Guide exists RDQM makes IBM MQ highly available by using DRBD disk replication and a cluster stack (Pacemaker/Corosync). That’s great – until a routine RHEL patch window updates the Linux kernel.
Here’s the hidden dependency: RDQM relies on a DRBD kernel module that must be compatible with the running kernel. […]












