Participate: Colorado Phase 1 Open Design review
By tf on Feb 16, 2009
Colorado is the OpenSolaris project to have Open HA Cluster running on the OpenSolaris binary distribution. In a past blog I explained why this is not just a "compile and run" experience. Last year in September and October 2008 there have been two CLARC (CLuster Architecture Review Committee) slots assigned to review the Colorado requirements specification.
Prior to the call it makes sense to first read the design documents:
- The main document explains how generic requirements get implemented, like necessary (ksh) script changes, modifications to some agent, specifically support for the ipkg brand type within the HA Containers agent, details on the IPS support implementation, build changes to support compilation with Sun Studio Express, etc.
- The document about weak membership does explain the modifications to achieve a two node cluster without requiring an extra quorum device. Instead a new mechanism gets implemented which makes use of health checks. The changed behavior to the already existing strong membership model gets explained, as well as the modifications to the command line interface to switch between those two membership models.
- The networking design document describes the changes necessary to work with the OpenSolaris projects Clearview and Crossbow. Especially the later also requires changes within the cluster CLI to support the configuration of virtual network interfaces (VNIC).
- The iSCSI design document describes the changes required within the DID (device id) driver and the interaction with the Solaris iSCSI subsystem.
You can also send your comments to the ha-clusters-dicsuss-at-opensolaris-dot-org mailing list.
Don't miss this interesting opportunity to participare and learn a lot about the Open HA Cluster internals. Hear you at the CLARC slot or read you on the maillist