Figure 3 shows a management LAN in which the hosts are known as mgmtA, mgmtB, mgmtC, and mgmtD. With this management LAN, gWLM can manage the hosts in a single SRD. Complete the following procedure to set up gWLM to manage such hosts in an SRD:

1.For each host in the management LAN that you want to manage in an SRD:

a.Edit the /etc/opt/gwlm/conf/gwlmagent.properties file to include the following property:

com.hp.gwlm.security.virtualLocalHostName=hostnameOnLAN

For example, with the host mgmtA, its property would be: com.hp.gwlm.security.virtualLocalHostName=mgmtA

b.Restart gwlmagent on the host:

# /opt/gwlm/bin/gwlmagent --restart

2.The CMS must also be in the management LAN. If the primary hostname for the CMS is not the name, it uses in the management LAN:

a.Edit the gwlmagent.properties file on the CMS to include the property: com.hp.gwlm.security.virtualLocalHostName=hostnameOnLAN

On HP-UX, the gwlmagent.properties file is in /etc/opt/gwlm/conf/. On Windows, it is in C:\Program Files\HP\Virtual Server Environment\conf\. (The given Windows path is the default; however, a different path might have been selected at installation.)

b.Restart System Insight Manager and gwlmcmsd.

3.On each host in the SRD (CMS and managed nodes), ping every other host in the SRD—using the hostname you intend to have gWLM discover (its hostnameOnLAN)—to verify communication is possible.

4.Discover (or re-discover) the hosts using the gWLM Manage Systems and Workloads wizard.

Creating “Golden Images”

If you create golden images of a system’s applications and operating system to store in an IgniteUX server for distribution to other systems, here are tips for creating images that include gWLM.

When creating an image of a managed node:

•Ensure the gWLM agent is set to start automatically.

In the file /etc/rc.config.d/gwlmCtl, set the variable GWLM_AGENT_START equal to 1.

•Ensure no deployed SRD includes the node. (If the file /etc/opt/gwlm/deployed.config exists, an SRD is deployed on the node. Temporarily undeploy the SRD or unmanage the node.)

If a node based on a virtual partition is part of a deployed SRD and you make a golden image of the virtual partition, once you push that golden image out, the gWLM agent on the new system will still consider itself part of the SRD. The agent will then try to rendezvous with that SRD’s other managed nodes. You can reset the agent by deleting the deployed.config file (mentioned previously), then stopping and restarting gwlmagent.

Multiple network interface cards

As a client/server application, gWLM is more sensitive than other types of applications to the network configuration of your host. It supports management only within a single network domain. For example, if your CMS host has multiple network interface cards that are connected to multiple distinct networks, gWLM requires that the fully qualified host name resolve to the IP address that is reachable by the gWLM agents to be managed.

48 Additional configuration and administration tasks

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HP UX 11i Workload Management (gWLM/WLM) Software manual Creating Golden Images, Multiple network interface cards
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UX 11i Workload Management (gWLM/WLM) Software specifications

HP-UX 11i Workload Management (gWLM/WLM) software is an integral component of HP's premier UNIX operating system, designed to enhance system performance and resource management across diverse workloads. This advanced tool allows system administrators to monitor, control, and allocate resources effectively to achieve optimal performance, reliability, and service levels in enterprise environments.

One of the main features of gWLM/WLM is its ability to classify workloads and manage them according to specific policies set by the administrator. By using service level objectives (SLOs), administrators can define the performance criteria for various applications and workloads. gWLM continuously tracks these workloads, ensuring that they adhere to the defined SLOs, thus maintaining a high level of application performance.

The software employs resource pools, which segment resources such as CPU, memory, and I/O bandwidth among different workloads based on predefined priorities. This capability ensures that critical applications receive the resources they require, even during peak usage periods, thereby preventing resource starvation that could lead to system slowdowns or crashes.

Another significant characteristic of gWLM/WLM is its real-time monitoring and reporting capabilities. The software provides detailed insights into resource utilization, workload performance, and system health. Administrators can access this information through a user-friendly interface, allowing for informed decision-making and proactive management.

Integration with HP Serviceguard adds another layer of functionality, enabling high availability for critical applications. gWLM can orchestrate workload migration to ensure that service levels are maintained, even in the event of hardware failures or resource contention.

The technology behind gWLM/WLM is built on advanced algorithms that leverage historical data and predictive modeling to optimize resource allocation dynamically. This means that as workloads change, the system can automatically adjust resource distribution to meet performance targets without the need for constant manual intervention.

gWLM also supports integration with various enterprise management tools, enabling administrators to implement comprehensive monitoring and management strategies across the IT infrastructure. The scalability of gWLM allows organizations of all sizes to benefit from its robust workload management features, ensuring that they can adapt to changing demands in their operational environments.

In summary, HP-UX 11i Workload Management software offers a sophisticated solution for optimizing resource utilization, managing workloads effectively, and maintaining high performance in complex enterprise environments. Its comprehensive features and technologies make it an essential tool for any organization seeking to enhance their IT operations.
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