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Oracle Solaris Cluster Overview |
1. Introduction to Oracle Solaris Cluster
2. Key Concepts for Oracle Solaris Cluster
Cluster Configuration Repository
Shared Devices, Local Devices, and Device Groups
How Oracle Solaris Cluster Uses Shared Devices
Description of a Resource Type
Description of a Resource Group
Description of a Failover Data Service
Description of a Scalable Data Service
Description of a Parallel Application
Visualization of System Resource Usage
This section describes the primary features and benefits of a zone cluster.
A zone cluster provides the following features and benefits.
Application fault isolation – A failure of applications on one zone cluster does not affect applications on other zone clusters. For example, if a zone cluster node starts, halts, or reboots, nodes in other zone clusters are not affected.
Security – Applications that are, or a person who is, logged into a zone cluster node cannot see or modify elements in the global cluster or in other zone clusters. A zone cluster only contains those elements, such as file systems, ZFS datasets, or network resources that are explicitly configured as part of that zone cluster. A failover application in a zone cluster can fail over or switch over only from one node in a zone cluster to another node in the same zone cluster. All instances of a scalable application run only in the same zone cluster. The zone cluster is a security container that applications cannot escape.
Resource management – You can apply the full range of Oracle Solaris resource management controls to a zone cluster. Consequently, you can control all applications on a node in a zone cluster at the zone level. This control enables you to better manage the resources that are available to a zone cluster node. For example, this control enables you to place an application in a zone cluster and reduce the number of CPUs. You can thus reduce your per-CPU license fee.
Delegated administration – You can delegate the ability to manage applications in a zone cluster to an administrator who is operating in that zone cluster. A zone cluster functions independently of the global cluster and other zone clusters. As the global zone administrator, you can set up cross-cluster dependencies and affinities and administer applications in the zone cluster.
Simplified cluster – All you need to do in a zone cluster is administer the applications and resources that are used by those applications. As the global-zone administrator, you can create, manage, and remove a zone cluster at any time by issuing a command both inside and outside that zone cluster. You can do so without affecting the global cluster or other zone clusters.
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