Compaq Reliable Transaction Router Bedienungsanleitung PDF herunterladen (Seite 8)

New Features and Problems Fixed

1.2 RTR Version T5.2 EFT1

This section contains information speciﬁc to RTR Version T5.2 EFT1.

1.2.1 New Features

• HP Reliable Transaction Router for Linux 5.2 (x86_64) servers

RTR is now available on HP Proliant x86 64 bit Linux platform.

RedHat Cluster-suite and Global File System (GFS) are required for

conﬁguring RTR in an ACTIVE/STANDBY mode.

• Platform Support Details:

Kernel Version: Redhat Linux 2.6.18-92.el5

Linux OS Version: RHEL 5.2

• Compiler Details:

C Compiler: gcc version 4.1.2 20071124 (Red Hat 4.1.2-42)

• RTR application compiler ﬂags

Compile RTR applications with fPIC and m64 ﬂag of gcc compiler.

Note

RTR supports only 64-bit applications.

Note

While conﬁguring RTR in the ACTIVE/STANDBY mode, the journal must

be created in the shared disk (GFS), which is accessible from all nodes

conﬁgured in the Linux cluster.

For RTR, to work in the ACTIVE/STANDBY mode, the following

environmental variables must be set:

• RTR_CLU_MEM_NODES: This variable enables RTR to recognize

the back-end nodes of the cluster that is participating in the

ACTIVE/STANDBY mode. For example:

RTR_CLU_MEM_NODES="BE1, BE2"

• RTR_CLU_LCK_DISK: This variable enables RTR to maintain

the "cluster node locks" on a common shared disk in the cluster.

All back-end nodes in the cluster must use the same disk for

maintaining "cluster node locks". For example:

RTR_CLU_LCK_DISK="/dev/mapper/rtrvg-lvol0"

• RTR error messages

Selective RTR error messages are enhanced to display the appropriate error

or information, along with the cause for the error, in the RTR log ﬁle.

RTR online help is also enhanced to display the detailed explanation for

various error codes.

• New monitor picture to display the front-end links on the transaction

router node

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