Installing HP 3PAR InForm Command Line Interface (CLI)

HP 3PAR Cluster Extension communicates with the HP 3PAR storage system using the HP 3PAR InForm Command Line Interface (CLI). Ensure that you install the supported version of HP 3PAR Command Line Interface (CLI) on a host where clx3PARrun can be used.

Creating and configuring the user configuration file

The CLI expects as an argument the name configured as the APPLICATION tag value.

The following is an example of a customized user configuration file when using clx3PARrun:

#

COMMON

#LogLevel info # errorinfo default: error (optional)

#The APPLICATION part defines failover information for the application

#specified as value of the APPLICATION tag.

#For example, the command - clx3PARrun CLXTEST1 — will use the below

#settings to check and allow access to the disk set specified as volume

#Group CLX_VGTEST1. Example includes similar kind of settings for another

#cluster group CLXTEST2.

#Necessary object when clx3PARrun is used are:

#APPLICATION, DC_A_InServStorage_SerNum, DC_B_InServStorage_SerNum,

#RCVolumeGroupA, RCVolumeGroupB, DC_A_Hosts and DC_B_Hosts

#APPLICATION CLXTEST1

# package/service/cluster group test_application

#DC_A_InServStorage_SerNum

1302871 # 1302871 is the data

center A HP 3PAR

array serial number

 

 

#DC_B_InServStorage_SerNum

1302835 # 1302835 is the data

center B HP 3PAR

array serial number

 

 

#RCVolumeGroupA

CLX_VGTEST1 # CLX_VGTEST1 is the

data center A

HP 3PAR Remote Copy volume group name

 

#RCVolumeGroupB

CLX_VGTEST1.r2835 # CLX_VGTEST1.r2835 is the data

center B HP 3PAR Remote Copy volume group name

 

#DC_A_Hosts clx_node1 clx_node2 # clx_node1, clx_node2 are data

centre A cluster

nodes

 

 

#DC_B_Hosts clx_node3 clx_node4 # clx_node3, clx_node4 are data

centre B cluster

nodes

#ApplicationStartup fastfailback # values: fastfailback resyncwait

#UseNonCurrentDataOk yes # values: yes no #Default value is yes which causes the failover operation to succeed at the destination site when the data at the destination site might not be current. On setting the value to No the resource will not come online at the destination site since the data might not be current.

#APPLICATION CLXTEST2

# package/service/cluster group test_application

#DC_A_InServStorage_SerNum

1302871

# 1302871

is the data center A HP 3PAR

array serial number

 

 

 

#DC_B_InServStorage_SerNum

1302835

# 1302835

is the data center B HP 3PAR

array serial number

 

 

 

#RCVolumeGroupA

CLX_VGTEST2 # CLX_VGTEST2 is the data center A

HP 3PAR Remote Copy volume group name

 

 

#RCVolumeGroupB

CLX_VGTEST2.r2835 # CLX_VGTEST2.r2835 is the data

center B HP 3PAR Remote Copy volume group name

#DC_A_Hosts clx_node1 clx_node2 # clx_node1, clx_node2 are data centre A cluster nodes

#DC_B_Hosts clx_node3 clx_node4 # clx_node3, clx_node4 are data centre B cluster nodes

#ApplicationStartup resyncwait # values: fastfailback resyncwait

#UseNonCurrentDataOk yes # values: yes no #Default value is yes which causes the failover operation to succeed at the destination site when the data at the destination site might not be current. On setting the value to No the resource will not come online at the destination site since the data might not be current.

Timing considerations

HP 3PAR Cluster Extension gives priority to storage system operations over cluster software operations. If HP 3PAR Cluster Extension is invoked at the point when virtual volumes of Remote Copy volume group are in resynchronization or full synchronization operation or is gathering information about the remote storage system, it waits until the requested status information is reported. This ensures the priority of data integrity over cluster software failover behavior. Because the failover timing depends on the configuration of your Remote Copy environment, load on the

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HP Cluster Software manual Installing HP 3PAR InForm Command Line Interface CLI, Timing considerations

Cluster Software specifications

HP Cluster Software is a robust solution designed to enhance the reliability, availability, and scalability of computing environments in enterprise settings. This software is instrumental in managing clusters of servers, providing a unified framework that allows for efficient resource management, workload distribution, and high availability.

One of the main features of HP Cluster Software is its ability to deliver high availability through failover mechanisms. In the event of a hardware or software failure, the software automatically shifts workloads from the affected node to a standby node within the cluster, minimizing downtime. This feature is critical for organizations that require continuous access to their data and applications.

Scalability is another significant characteristic of HP Cluster Software. Organizations can easily add or remove nodes from the cluster without disrupting ongoing operations. This flexibility ensures that enterprises can adapt to changing workloads and resource demands efficiently, making it suitable for environments ranging from small businesses to large data centers.

Load balancing is a key technology employed by HP Cluster Software. It intelligently distributes workloads across the available nodes, optimizing resource utilization and ensuring that no single server is overwhelmed. By balancing the load, organizations can achieve better performance and enhance the response times of applications, which are essential for user satisfaction.

HP Cluster Software supports various clustering topologies, including active-active and active-passive configurations. This versatility allows organizations to choose the architecture that best fits their operational requirements. Additionally, the software integrates seamlessly with various HP and third-party hardware and software solutions, thus providing a holistic environment for managing IT resources.

Moreover, HP Cluster Software offers centralized management tools that simplify cluster administration. Administrators can monitor cluster performance, manage workloads, and configure settings all from a single interface. This ease of use reduces the complexity often associated with managing large clusters and empowers IT teams to respond rapidly to issues.

In summary, HP Cluster Software is an essential tool for organizations looking to enhance their IT infrastructure's availability, reliability, and performance. With its failover capabilities, scalability options, load balancing technology, and centralized management features, it stands out as a comprehensive solution for modern computing challenges.