Hp StorageWorks Scalable File Share User Manual download pdf (Page 49)

heartbeat-2.1.3-1.01hp

2. Obtain the failover pair information from the overall Lustre configuration.

3. Heartbeat uses one or more of the network interfaces to send Heartbeat messages using IP

multicast. Each failover pair of nodes must have IP multicast connectivity over those

interfaces. HP SFS G3.2-0 uses eth0 and ib0.

4. Each node of a failover pair must have mount-points for all the Lustre servers that might

be run on that node; both the ones it is primarily responsible for and those which might fail

over to it. Ensure that all the mount-points are present on all nodes.

5. Heartbeat uses iLO for STONITH and requires the iLO IP address or name, and iLO login

and password for each node. Each node in a failover pair must be able to reach the iLO

interface of its peer over the network.

5.2.2 Generating Heartbeat Configuration Files Automatically

Because the version of lustre_config contained in Lustre 1.8 does not produce correct

Heartbeat V2.1.3 configurations, the -t hbv2 option should not be used. The lustre_config

script does however correctly add failover information to the mkfs.lustre parameters (allowing

clients to failover to a different OSS) if the failover NIDs are specified in the CSV file.

The HP SFS G3.2-0 software tarball includes the

/opt/hp/sfs/scripts/gen_hb_config_files.pl script which is used to generate

Heartbeat configuration files for all the nodes from the lustre_config CSV file. The

gen_hb_config_files.pl script must be run on a node where Heartbeat is installed. An

additional CSV file of iLO and other information must be provided. A sample is included in the

HP SFS G3.2-0 software tarball at /opt/hp/sfs/scripts/ilos.csv. For more information,

run gen_hb_config_files.pl with the -h switch. The Text::CSV Perl module is required

by gen_hb_config_files.pl.

5.2.3 Configuration Files

Four files are required to configure Heartbeat. These files can be automatically generated and

distributed by the gen_hb_config_files.pl script (including the edits to cib.xml described

later) using the recommended command:

# gen_hb_config_files.pl -i ilos.csv -v -e -x -c testfs.csv

Descriptions of the Heartbeat configuration files in the remainder of this section are included

for reference and further understanding, or so they can be generated by hand if necessary. For

more information, see http://www.linux-ha.org/Heartbeat.

Use of the gen_hb_config_files.pl script is recommended.

• /etc/ha.d/ha.cf

Contains basic configuration information.

• /etc/ha.d/haresources

Describes the resources (in this case file systems corresponding to Lustre servers) managed

by Heartbeat.

• /etc/ha.d/authkeys

Contains information used for authenticating clusters. It should be readable and writable

by root only.

• /var/lib/heartbeat/crm/cib.xml

Contains the Heartbeat V2.1.3 Cluster Information Base. This file is usually generated from

ha.cf and haresources. It is modified by Heartbeat after Heartbeat starts. Edits to this

file must be completed before Heartbeat starts.

5.2 Configuring Heartbeat 49

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