课程大纲： Highly Available Services with DRBD and Pacemaker培训
DRBD basics
Theory of operation
Installation
Supported replication modes and their use cases
Creation of a two-node single-primary cluster
Manual failover
Recovering from split-brain
Corosync
Installation and initial configuration
Pacemaker
Theory of operation
Installation
Role of STONITH devices
Configuration of resource agents
DRBD
Mounted filesystem
Virtual IP address
LSB and systemd services
Groups, ordering and colocation constraints
DRBD in Dual-Primary mode
Use with OCFS2
Advanced topic: root filesystem on DRBD
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