Poly Serve Matrix Server

This high-availability product belongs to the category of datacenter clusters that we described at the beginning of this section. It is a clustering solution for SUSE Linux Enterprise Server that can run applications like Oracle databases or web servers. The applications can run on several nodes in the cluster simultaneously. Figure 1.4 shows a typical PolyServe cluster with NFS exports. With that you can balance the load of an application, and when a node fails the application remains...

Preparing the Linux Cluster to Install Groupwise

We start with preparatory steps on our cluster before installing GroupWise. We want to have the shared disks and resources configured so that the shared data store is online and tested. For the system where we are installing GroupWise, we have already created EVMS volumes that can be mounted as grpwise gwdom1 and grpwise gwpo1 . How to create a shared EVMS volume is explained in detail in Chapter 5 . Perform the following steps to prepare your cluster for the GroupWise installation 1. First...

Creating Clustered Volumes on OES Linux and Net Ware

After setting up the cluster, the first step to take is to set up the clustered volumes. This procedure involves three main steps 1. Create shared disk partitions 3. Create clustered volume objects The following procedure describes all necessary steps. The procedure is applicable to NetWare as well as Linux. Any differences between the operating systems are marked as such. Before shared disk partitions can be created, Novell Cluster Services must be installed. After installation of Novell...

Choosing the Right File System Type for Cluster Volumes on Linux

On OES Linux, you can create clustered NSS volumes as described previously as well. In a rolling cluster migration, it is even possible to mount an NSS volume created on OES NetWare on an OES Linux node. You can read the procedure given previously to learn all about the configuration of cluster-enabled NSS volumes on OES Linux the NSSMU tool described previously is available in OES Linux as well. If, however, you don't need any of the specific benefits offered by NSS, you can cluster...

Clustering Group Wise

Of all applications that run in clustered environments, GroupWise is definitely the one that is used the most. Why Very simple Email has become the number-one application in every office. Take away people's email and they are unable to perform their jobs, or so they say. We will look into configurations for GroupWise on NetWare and Linux in clustered environments. We expect that you have experience with GroupWise. We expect you to know what a POA is and what an MTA is, and how these components...

Mware Clustering Configuration

VMware clustering configuration is detailed in the following subsections. Adding a Shared Disk in VMware ESX Server There are two possibilities to set up clustering for virtual machines in VMware ESX Server. You can either use a physical LUN (Logical Unit) from your SAN and assign that to two or more virtual machines, or create a new virtual disk file and add that to the virtual machines. Configuration of the virtual machines can be performed from the Management Interface, from the Remote...

EDirectory Cluster Guidelines

Novell Cluster Services uses eDirectory as its repository for configuration information, and eDirectory also is the main database where information is stored about all resources that are configured for access to the cluster. Most applications that run on the cluster also use eDirectory to store their configuration and to control access to its resources. The cluster configuration is stored in the cluster container. This container object itself contains general configuration information for the...

Managing Novell Cluster Services from the Command Line

When tuning and troubleshooting Novell Cluster Services, the administrator has the important task of managing Cluster Services from the command line. For this purpose, the cluster command was created. This command has many options that can be used from the command line to manage the cluster environment. All the commands in the following list are arguments for the cluster command for example, the command down should be used as cluster down . To indicate whether the command can be used on...