缩容这个tikv节点,ip地址:172.168.8.112
通过命令/data0/tidb-ansible/resources/bin/pd-ctl -u http://172.168.8.63:2379 -d store 找到对应ip的store id
{ "store": { "id": 11, "address": "172.168.8.112:20160", "state_name": "Up" }, "status": { "capacity": "2.0 TiB", "available": "1.9 TiB", "leader_count": 656, "leader_weight": 1, "leader_score": 67388, "leader_size": 67388, "region_count": 1977, "region_weight": 1, "region_score": 203287, "region_size": 203287, "start_ts": "2018-08-09T17:39:17+08:00", "last_heartbeat_ts": "2018-08-14T14:29:01.870548044+08:00", "uptime": "116h49m44.870548044s" } }, |
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从集群中移除这个节点,/data0/tidb-ansible/resources/bin/pd-ctl -u http://172.168.8.63:2379 -d store delete 11,执行返回SUCCESS成功状态
再次检查, /data0/tidb-ansible/resources/bin/pd-ctl -u http://172.168.8.63:2379 -d store 11,检查状态为 "state_name": "Offline",此时处于下线中的状态,等过一会变成了"state_name": "Tombstone",就表示完全下线成功了,而在此过程中,最好保持不做任何物理上的删除清理操作。
等完全下线成功后,停止 node11 上的服务:ansible-playbook stop.yml -l 172.168.8.112
编辑 inventory.ini
文件,移除节点信息: 172.168.8.112
更新 Prometheus 配置并重启:ansible-playbook rolling_update_monitor.yml --tags=prometheus
在inventory.ini,添加新的tidb节点 172.168.8.112
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初始化新增节点:
ansible-playbook bootstrap.yml -l 172.20.101.18,172.20.101.29
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部署新增节点:
ansible-playbook deploy.yml -l 172.20.101.18,172.20.101.29
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启动新节点服务:
ansible-playbook start.yml -l 172.20.101.18,172.20.101.29
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更新 Prometheus 配置并重启:
ansible-playbook rolling_update_monitor.yml --tags=prometheus
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然后再负载均衡里面,添加上这些新的tidb节点