Preparing for Changes to HP-UX Clusters

(If you will not be upgrading any HP-UX ("DUX") clusters, you can skip this section.)

HP-UX 10.01 replaces HP's proprietary mechanism for clusters, often called "DUX," with NFS technology, NFS Diskless.

Most of the work of converting a Series 700 cluster to NFS Diskless will be done for you by the upgrade software, but there are some important tasks you need to do yourself, particularly if your Series 700 cluster supports Series 300 and 400 clients — these computers are not supported as of 10.0, so you will have to make other provisions for them before upgrading the cluster: see “Providing for Series 300 and 400 Clients ” for some suggestions.

The following sections summarize what the pre-upgrade tools and the upgrade software do to convert the cluster, and what you need to do yourself. See also “Converting HP-UX ("DUX") Clusters”.

What the Tools Do

The snoop(update_aid) tool checks your system for:
- Series 300 and 400 clients.
- "Invalid" clients:
  Clients that have entries in /etc/clusterconf but lack kernel or critical configuration files.
  Clients whose entries in /etc/clusterconf have been "commented out".
  All other clients are considered "valid", although full conversion is possible only for clients that are actually booted to the server during the upgrade.

The upgrade software:

Removes the Series 300/400 operating system if it finds one on the server.
Preserves all HP-UX "system" CDFs for the server and "valid" Series 700 clients as regular HP-UX files.
Upgrades the server to HP-UX 10.01.




	CAUTION: The NFS Diskless software you will need on 10.x will be automatically selected for you during the upgrade when you choose `Match What Target Has`. DO NOT DESELECT IT! See “What Is Match-What-Target-Has?”, later in this chapter. The upgrade software does not follow symbolic links when searching for and converting CDFs.

Post-upgrade tools:
- Reclaim and reassign swap space on the server.
- Add back clients as NFS Diskless clients.
- Reconfigure networking, peripherals, etc. on the clients, using the 9.x configuration files and your input.

What You Need to Do (Summary)

Use this list as a checklist; details are later in this chapter and the chapters that follow.

Before you upgrade:
1. Run snoop(update_aid).
  See “Analyzing Your System ”, later in this chapter.
2. Make other provisions for Series 300/400 clients.
  See “Providing for Series 300 and 400 Clients ”.
3. Remove any Series 300 or 400 clients and any client "fragments" from the cluster.
  See “Removing Series 300/400 Clients and Inactive Clients ”, later in this chapter.
4. Re-run snoop to check that the cluster is ready to be upgraded.
5. Copy any non-"system" CDFs to regular files; back up those files; remove the non-HP CDFs.
  See “Handling Non-"System" CDFs ”, later in this chapter.
6. If the cluster is a Trusted System, "unsecure" the system so it can be upgraded.
  Do this just before you run the upgrade. See “"Unsecuring" a Trusted System ”, later in this chapter.
After upgrading to 10.01:
1. Run tools to convert and add back clients.
  See “Upgrading HP-UX ("DUX") Cluster Clients ”.
2. Boot the clients.
3. Fine-tune client configuration as needed.
4. Upgrade applications, add optional HP-UX features, and upgrade the cluster to 10.10 if you so decide.
5. "Resecure" a Trusted System cluster.
  See Chapter 7 “After the Upgrade ”.

Preparing for Changes to HP-UX Clusters

Technical documentation

» Table of Contents

What the Tools Do

What You Need to Do (Summary)