替换集群节点

本文内容：

• 在紧急情况下替换节点

在紧急情况下替换节点

1. Provision and install GitHub Enterprise Server with a unique hostname on the replacement node.

2. Using the administrative shell or DHCP, only configure the IP address of the replacement node. 不要配置任何其他设置。

3. 要将失败的节点标记为离线，在任何节点上修改相关代码部分的群集配置文件 (cluster.conf)，以包含文本 offline = true。

   例如，下面修改的 cluster.conf 会将 ghe-data-node-3 节点标记为离线：

   [cluster "ghe-data-node-3"]
   hostname = ghe-data-node-3offline = trueipv4 = 192.168.0.6
   # ipv6 = fd12:3456:789a:1::6
   

4. From the administrative shell of the node where you modified cluster.conf, run ghe-cluster-config-apply. This will validate the configuration file, copy it to each node in the cluster, and mark the node offline.

5. 要添加新配置的更换节点，在任何节点上，修改 cluster.conf 文件以删除失败的节点并添加更换节点。 例如，下面修改的 cluster.conf 文件会将 ghe-data-node-3 替换为新配置的节点 ghe-replacement-data-node-3：

   [cluster "ghe-replacement-data-node-3"]
   hostname = ghe-replacement-data-node-3ipv4 = 192.168.0.7

   ipv6 = fd12:3456:789a:1::7

   git-server = true pages-server = true mysql-server = true elasticsearch-server = true redis-server = true memcache-server = true metrics-server = true storage-server = true

6. If you're replacing the MySQL master node or Redis master node, in cluster.conf, modify the mysql-master or redis-master value with the replacement node name.

   For example, this modified cluster.conf file specifies a newly provisioned cluster node, ghe-replacement-data-node-1 as the MySQL and Redis master node:

   mysql-master = ghe-replacement-data-node-1redis-master = ghe-replacement-data-node-1

7. From the administrative shell of the node with the modified cluster.conf, run ghe-cluster-config-init. This will initialize the newly added node in the cluster.

8. From the same node, run ghe-cluster-config-apply. This will validate the configuration file, copy it to each node in the cluster, and configure each node according to the modified cluster.conf file.