Table of Contents
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Pacemaker Administration
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Introduction
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The Scope of this Document
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What Is Pacemaker?
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Cluster Architecture
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Pacemaker Architecture
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Node Redundancy Designs
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Installing Cluster Software
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The Cluster Layer
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Client Options
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Configuring Pacemaker
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Configuration Using Higher-level Tools
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Configuration Using Pacemaker’s Command-Line Tools
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Working with CIB Properties
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Querying and Setting Cluster Options
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When Options are Listed More Than Once
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Connecting from a Remote Machine
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Using Pacemaker Command-Line Tools
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Controlling Command Line Output
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Monitor a Cluster with crm_mon
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Styling crm_mon HTML output
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Edit the CIB XML with cibadmin
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Batch Configuration Changes with crm_shadow
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Simulate Cluster Activity with crm_simulate
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Replaying cluster decision-making logic
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Why decisions were made
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Visualizing the action sequence
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What-if scenarios
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Manage Node Attributes, Cluster Options and Defaults with crm_attribute and attrd_updater
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Other Commonly Used Tools
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Administrative Modes
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Maintenance Mode
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Unmanaged Resources
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Disabled Configuration
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Standby Mode
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Rules
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Moving Resources
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Moving Resources Manually
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Standby Mode
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Moving One Resource
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Moving Resources Due to Connectivity Changes
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Tell Pacemaker to Monitor Connectivity
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Tell Pacemaker How to Interpret the Connectivity Data
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Troubleshooting Cluster Problems
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Logging
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Reading the Logs
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Transitions
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Node Failures
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Resource Failures
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Upgrading a Pacemaker Cluster
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Pacemaker Versioning
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Upgrading Cluster Software
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Complete Cluster Shutdown
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Rolling (node by node)
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Detach and Reattach
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Upgrading the Configuration
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What Changed in 2.1
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What Changed in 2.0
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What Changed in 1.0
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New
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Changed
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Removed
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Alert Agents
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Using the Sample Alert Agents
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Writing an Alert Agent
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Resource Agents
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Action Completion
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OCF Resource Agents
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Location of Custom Scripts
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Actions
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How Are OCF Return Codes Interpreted?
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OCF Return Codes
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Environment Variables
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Clone Resource Agent Requirements
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LSB Resource Agents (Init Scripts)
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LSB Compliance
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Quick Comparison of pcs and crm shell
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Show Cluster Configuration and Status
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Manage Nodes
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Manage Cluster Properties
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Show Resource Agent Information
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Manage Resources
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Manage Constraints
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Advanced Configuration
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Manipulate Configuration Elements by Type
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Batch Changes
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Template Creation
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Log Analysis
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Configuration Scripts