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migrate curve
Wine93 edited this page Aug 15, 2022
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1 revision
修改拓扑文件中需要迁移的主机:
$ vim topology.yaml
kind: curvebs
global:
variable:
machine1: debian10-001
machine2: debian10-002
machine3: debian10-003
machine4: debian10-004 # 新增机器
chunkserver_services:
config:
listen.ip: ${service_host}
listen.port: 82${format_replicas_sequence}
data_dir: /data/chunkserver${service_replicas_sequence}
copysets: 100
deploy:
- host: ${machine1}
replicas: 3
- host: ${machine2}
replicas: 3
- host: ${machine4} # 将 ${machine3} 修改为 ${machine4}
replicas: 3
⚠️ 警告:
- 每一次只能迁移同一种角色的服务
- 每一次只能迁移同一台主机的服务
$ curveadm migrate topology.yaml
💡 提醒:
迁移操作属于幂等操作,用户在执行失败后可重复执行,不用担心服务残留问题
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