Upgrade your current version by using rolling upgrade
You can perform a rolling upgrade from your previous version to the latest version (supported by your selected operating system) of IBM® Spectrum Conductor.
Benefits of a rolling upgrade
- Phased process is low risk
- Rolling upgrade is a two-phased process: first upgrade your hosts by installing and enabling the latest version of IBM Spectrum Conductor on each host, and then upgrade the cluster to the latest version and enable new features. This way, a cluster administrator can verify each phase before proceeding to the next step. If required, you can also fully roll back your upgrade, so your cluster and hosts return to their original states.
- No additional or reduced resources
- When you perform a rolling upgrade on your host, your resources are not affected: no extra resources are required, nor are any resources reduced for the cluster. In contrast, during a parallel upgrade, you have two versions of IBM Spectrum Conductor co-existing: both the original cluster or new cluster can never reach full capacity and can never fully use all resources, since compute hosts are gradually moving from the old cluster to new cluster.
- Minimal impact to workload
- The impact to workload during a rolling upgrade is minimal: no downtime to existing running workload as that workload remains running on hosts, and the only downtime to new workload is when the cluster restarts (so new binaries can be started, instead of the old binaries).
- Automatic migration of configuration files
- A rolling upgrade does not require a complicated manual migration of the cluster configuration files. The appropriate binaries are installed over your existing version of IBM Spectrum Conductor and all existing configuration remain in tact. Required cluster configuration changes are automatic; new features can be enabled by adding new parameters. In contrast, a parallel upgrade requires more effort and manual configuration changes.
Supported upgrade paths
Perform a rolling upgrade of IBM Spectrum Conductor from your previous version to 2.3.0. To upgrade IBM Platform Conductor for Spark 1.1.0 to IBM Spectrum Conductor 2.3.0, you must perform a parallel upgrade. See Upgrade in parallel with an existing cluster.
You can use this release of IBM Spectrum Conductor to leverage the generalized service control capabilities of IBM Spectrum Conductor.
If your environment includes other products in the IBM Spectrum Computing family (such as IBM Spectrum Symphony), then when you run the IBM Spectrum Conductor installer during the upgrade process, it checks whether common components (such as EGO) require upgrading or if they were already upgraded during another product upgrade. The installer upgrades only those components that are required for IBM Spectrum Conductor 2.3.0.