HP-UX Workload Manager A.03.05.xx Release Notes for HP-UX 11i v3 HP Part Number: B8843-90051 Published: September 2012 Edition: 3.
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Contents 1 Announcement...........................................................................................5 2 New in this version.....................................................................................6 3 Known problems and workarounds ..............................................................7 System panic when PRM is enabled; install failure in absence of PRM when certain kernel patches are present....................................................................................
5 Patches and fixes in this version .................................................................30 6 Software availability in native languages ....................................................31 7 Security...................................................................................................32 Relationship between host name and SSL certificates...................................................................32 Data collectors.............................................................
1 Announcement HP-UX Workload Manager (WLM) A.03.05 runs under the following HP-UX operating systems and hardware: Operating Systems Hardware HP-UX 11i v3 (B.11.31) HP 9000 servers, HP Integrity servers, and servers combining HP 9000 partitions and HP Integrity partitions HP-UX WLM provides goal-based workload management. This management enables automatic resource allocation and application performance management through the use of prioritized service-level objectives (SLOs).
2 New in this version This section lists the new or changed functionality for WLM A.03.05. WLM A.03.05 supports HP-UX 11i v3 (B.11.31). HP-UX Workload Manager A.03.05 contains the same binaries as HP-UX Workload Manager A.03.04. This new version is a repackaged bundle to support installation on newer platforms like HP Integrity BL 800 series. Running the HP-UX Workload Manager commands with the version option (-V) will continue to return A.03.04. This repackaged version is available only for HP-UX 11iv3.
3 Known problems and workarounds This section discusses problems and workarounds for version A.03.04 and A.03.05. System panic when PRM is enabled; install failure in absence of PRM when certain kernel patches are present Issue On HP-UX 11i v1, a system panic problem occurs when Process Resource Manager (PRM) is enabled. In addition, WLM installation fails when certain core kernel patches are present and PRM is absent. Workaround Install the version A.01.00.00.
Temporary Instant Capacity (TiCAP) expires while WLM is managing nPartitions Issue WLM manages nPartitions using its wlmpard daemon. Assume wlmpard is started on a system that has Temporary Instant Capacity in use. If that temporary capacity expires, wlmpard will still be able to deactivate cores without any problems. However, wlmpard may attempt to activate cores based on the expired capacity. These attempts will fail because the temporary capacity no longer exists.
npar:Partition 0:0:n:32:3:8:3:29:29:8:8:0:90.000:90.000:0.000: npar:Partition 1:1:n:32:32:8:32:0::8:8:0:78.000:78.000:0.000: vpar:okra04:0:y:1::1:1:0:29::::::: vpar:virt10:0:n:1::1:::::::::: vpar:virt14:0:n:1::1:::::::::: In the output, if the 'global' line includes an 'n' and partitions are listed, WLM is affected. Workaround Run icapstatus with no options. If the output shows that the number of inactive cores is: • 0 Run icapmodify -a 0.
“Shutdown initiated” message. This most likely means that the partition modifications have not yet completed. They can take longer than 120 seconds. When the modifications have been made, WLM will honor the shutdown request. You can verify the shutdown has succeeded by using the ps command (if necessary, issue your shutdown command again). In addition, check the messages in /var/opt/wlm/msglog.
GlancePlus may not correctly identify processes’ PRM groups Issue On some systems, GlancePlus would not correctly identify processes’ PRM groups. WLM uses these PRM groups as its workload groups. On these systems, GlancePlus would report all processes as belonging to the PRM_SYS group (ID 0). As a result, the WLM glance_prm data collection script could not be used to track application (APP) metrics for a PRM group of processes. Workaround This issue is fixed in GlancePlus C.03.35.00.
Workaround Increase the system’s memory or decrease the minimum dynamic buffer cache using the kernel parameter dbc_min_pct. Secure Resource Partitions: Blocked port on a virtual network interface Issue Using the HP-UX feature Security Containment, you can set up a virtual network interface for each secure compartment. A process in one secure compartment can bind to a socket on a virtual network interface associated with a different secure compartment.
Processes in transient FSS groups appear unexpectedly in other workload groups Issue A deployed WLM configuration that has transient_groups set to 1 and contains FSS transient group candidates from time-to-time contains an FSS group called _IDLE_. As needed, WLM moves the jobs of the transient groups to _IDLE_, where they get the minimum of CPU and memory resources. The internal identifier for group _IDLE_ is picked by WLM on the fly (taken from the pool of unused identifiers).
operation, and then restart WLM. To stop WLM, stop the wlmpard and wlmd daemons (use the -k option with the corresponding commands). Note that wlmd should be stopped on all partitions managed by WLM. You can check the status of online cell operations by using parolrad -m command.
4 Compatibility information and installation requirements HP-UX WLM A.03.05 is available for the following environments: • HP-UX 11i v3 (B.11.31) on HP 9000 servers, HP Integrity servers, and servers combining HP 9000 partitions and HP Integrity partitions HP-UX WLM A.03.04 (B8843CA) is available for the following environments: • HP-UX 11i v1 (B.11.11) on HP 9000 servers • HP-UX 11i v2 (B.11.23) on HP 9000 servers or HP Integrity servers • HP-UX 11i v1 (B.11.11) and HP-UX 11i v2 (B.11.
Compatibility with other software WLM A.03.04 was verified using the software listed in the following table. Compatibility with other versions of the software packages is unknown unless explicitly stated. Table 1 Verified software configurations Software package Version on HP-UX 11i v1 (B.11.11) Version on HP-UX 11i v2 Update Version on HP-UX 11i v3 2 (B.11.23) (B.11.31) PRM C.03.04 C.03.03.01 C.03.04 Processor Sets A.01.00.00.
Compatibility with HP Integrity Virtual Machines WLM supports HP Integrity Virtual Machines (Integrity VM). You can run WLM both on the Integrity VM Host and in an Integrity VM (guest), but each WLM runs as an independent instance. To run WLM on the Integrity VM Host, you must use a strictly host-based configuration—a WLM configuration designed exclusively for moving cores across HP-UX Virtual Partitions or nPartitions, or for activating Temporary Instant Capacity (TiCAP) cores or Pay per use (PPU) cores.
Compatibility with PRM As of version A.03.01, WLM no longer includes PRM in the bundle. As a result, upgrading WLM no longer triggers a reboot. WLM will run only with PRM C.03.00 or later. If PRM C.03.00 or later is already on the machine where you are installing or upgrading WLM, you can continue to manage FSS and PSET-based workload groups just as if PRM had been installed with WLM.
Installation procedure If you are installing WLM from the quarterly Application Release (AR) media, use the procedure in this section to minimize system reboots. To install your software, use the SD-UX swinstall command. For information on installing using a GUI, see “Using the swinstall Graphical User Interface (GUI)” (page 28). NOTE: If you are upgrading your version of WLM, after installation, you must explicitly restart HP-UX WLM with the wlmd -a or wlmd -A commands.
1. Verify that HP-UX is up-to-date HP suggests that as part of your systems’ ongoing maintenance and support, the systems be kept up-to-date through the HP IT Resource Center’s Support Plus program. This program delivers quarterly patch bundles via the web and as part of the quarterly AR media. To register, go to the following location: http://itrc.hp.com Select the patch/firmware database link and register to create an account and log in, as instructed.
• HP Technical Documentation (http://docs.hp.com) Refer to the HP-UX 11i v1 topics “Installing and Updating” and “Patch Management”. 2. (Optional) Configure long hostnames Ensure the NodeHostNameXpnd bundle is installed if you want to use long host names on HP-UX 11i v2 or v3. Configure long host names as described below.
4. Determine what patches are needed a. Check the following data to determine what patches are suggested for WLM: If you plan to use the WLM configuration wizard, the wlmgui command, or wlminfo’s interactive mode GUI (-i), all of which depend on Java (Java Runtime Environment version 1.5 or later is required), refer to the following location for patch information: http://www.hp.com/go/java In addition, running these utilities with PRM-based configurations requires PRM C.03.00 or later.
# /usr/sbin/swlist [-l patch] patch where patch is the patch’s tag. For example, to check that patch PHKL_32061 is installed, use the following command line: # /usr/sbin/swlist -l patch PHKL_32061 Similarly, if you downloaded patch bundles in Step 1, check the bundles for the patches: # /usr/sbin/swlist -d patch @ /tmp/bundle_name If a given patch is not listed, check HP’s IT Resource Center (http://itrc.hp.com) for a superseding patch, then use swlist to list the superseding patch. c.
b. Create a directory for the depot: # mkdir /tmp/wlm_depot c. d. Place any patch bundles you downloaded in Step 1 (GOLDQPK11i or HWEnable11i) in /tmp/ if they are not already there. Check each of the patch bundles. # /usr/sbin/swlist -d @ bundle_path For example, check GOLDQPK11i as follows: # swlist -d @ /tmp/GOLDQPK11i_11.11.depot The output should include lines similar to the following lines: GOLDAPPS11i B.11.11.0312.4 Gold Applications Patches for HP-UX 11i v1, December 2003 GOLDBASE11i B.11.11.
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If you have previously installed WLM or PRM, ensure that PRM’s remote configuration daemon is disabled from starting automatically by setting the variable PRM_RMTCONF to 0 in the file /etc/rc.config.d/prm: PRM_RMTCONF=0 8. Shut down WLM if it is currently running Run the following command on every system or partition where you will install/upgrade WLM: # /opt/wlm/bin/wlmd -k Also shut down any running instances of the WLM global arbiter: # /opt/wlm/bin/wlmpard -k 9.
-s /tmp/wlm_depot \ B8843CA GOLDAPPS11i GOLDBASE11i PHKL_32619 SD-UX will attempt to build a new kernel and reboot the system. NOTE: Starting with WLM A.03.01, WLM no longer requires a reboot. The autoreboot option need no longer be set to true to satisfy requirements of the HP PRM kernel-building fileset PRM-Sw-Krn.PRM-KRN. Consequently, the SD-UX Interactive User Interface no longer prompts for an OK to reboot.
11. (Optional) Ensure you have the proper version of GlancePlus If you plan to use WLM data collectors that are based on Glance Adviser (such as glance_app or glance_tt), be sure to install and use GlancePlus C.03.35.00 or later to avoid a memory leak that occurs when Glance Adviser runs continuously. If you are using processor sets, install GlancePlus C.03.58.05 or later. 12.
NOTE: If this was the first time you installed WLM and you have not previously installed PRM, be sure to edit the file /etc/rc.config.d/prm to set the following variables as indicated: PRM_CONFIG=0 PRM_RMTCONF=0 These settings prevent PRM and its remote configuration daemon from starting automatically at reboot. (The PRM remote configuration daemon is not useful with WLM and does not need to be started.
5 Patches and fixes in this version There were no patches or fixes to previous releases to include in WLM A.03.05.
6 Software availability in native languages The manpages are available only in English. The release notes and user’s guide are available in English and Japanese.
7 Security This section highlights security items you should be aware of. Relationship between host name and SSL certificates SSL certificates are created when you install WLM. This enables WLM to run in secure mode within the system on which it is installed. As of version A.03.01, when you start WLM using the “/sbin/init.d/wlm start” script, the script uses secure mode by default.
• Rely—only to the extent that you trust your intranet—on the monitoring information from wlmgui to decide on a course of action. • The WLM GUI sends data to wlmcomd over the network without verifying the recipient. • Each connection to wlmcomd represents a separate process on the system. As such, each connection consumes resources, such as open file descriptors, a process ID, memory, and so forth. A large number of connections could result in denial of service.
8 Available manuals Several related manuals are available. These manuals can be accessed at http://www.hp.com/ go/wlm. They are also available for order. Specific WLM information can be found in: • HP-UX Workload Manager User’s Guide (B8844-90014) The release notes for each version of WLM can be found at http://www.hp.com/go/wlm. The user’s guide is available in /opt/wlm/share/doc/.
9 WLM toolkits Hewlett-Packard provides integration toolkits to simplify integrating Workload Manager with major third-party applications. The toolkits are made available on the web as they are developed. Also, they are bundled with the subsequent Workload Manager release. To download toolkits, visit the Workload Manager web page: http://www.hp.
10 Providing feedback • Email your feedback to the WLM and WLM Toolkit development teams at the following address: wlmfeedback@rsn.hp.com • For a forum with other WLM users, visit the IT Resource Center’s forum for HP-UX Workload/Resource Management: http://forums.itrc.hp.com/cm/ • For the latest patch information, white papers, and documentation, visit the Workload Manager web page: http://www.hp.
11 Training HP offers a course in HP-UX resource management using WLM. For information, including a course outline, visit: http://www.hp.com/education/courses/u5447s.
