红帽全球峰会1.3.2. 替换节点
heketi 不允许一对一替换另一个节点。但是，如果一个节点失败，请按照以下示例进行替换故障节点及其对应设备所需的操作顺序。
使用以下命令查找出现故障的节点：
# heketi-cli topology info … … ... Nodes: Node Id: 8faade64a9c8669de204b66bc083b10d ... ... … Id:a811261864ee190941b17c72809a5001 Name:/dev/vdc State:online Size (GiB):499 Used (GiB):281 Free (GiB):218 Bricks: Id:34c14120bef5621f287951bcdfa774fc Size (GiB):280 Path: /var/lib/heketi/mounts/vg_a811261864ee190941b17c72809a5001/brick_34c14120bef5621f287951bcdfa774fc/brick … … ...以下示例说明了替换故障节点所需的操作顺序。这个示例使用节点 ID 8faade64a9c8669de204b66bc083b10d。
扩展 OCP 集群以添加替换节点。有关如何添加节点的详情，请参考 第 1.1.2 节 “添加新节点” 部分中的步骤。
注意如果替换节点已是 OCP 集群的一部分，请跳过这一步并继续下一步 2。
添加一个新节点，最好具有与要替换节点相同的设备。
# heketi-cli node add --zone=1 --cluster=597fceb5d6c876b899e48f599b988f54 --management-host-name=node4.example.com --storage-host-name=192.168.10.104 # heketi-cli device add --name /dev/vdd --node 8faade64a9c8669de204b66bc083b10d Node and device added successfully禁用故障节点。
# heketi-cli node disable 8faade64a9c8669de204b66bc083b10d Node 8faade64a9c8669de204b66bc083b10d is now offline删除故障的节点。
# heketi-cli node remove 8faade64a9c8669de204b66bc083b10d Node 8faade64a9c8669de204b66bc083b10d is now removed在这个阶段，brick 从故障节点迁移。他基于 brick 分配算法选择合适的设备。
执行以下命令删除与节点关联的设备，因为无法删除与其关联的设备：
# heketi-cli device delete <device_id>例如：
# heketi-cli device delete 56912a57287d07fad0651ba0003cf9aa Device 56912a57287d07fad0651ba0003cf9aa deleted对节点上的每个设备执行 命令。
删除出现故障的节点。
# heketi-cli node delete 8faade64a9c8669de204b66bc083b10d Node 8faade64a9c8669de204b66bc083b10d deleted注意如果要替换节点中的块，请参阅 第 3.2.2 节 “替换块存储中的块”
'%20d='M201.5%20305.5c-13.8%200-24.9-11.1-24.9-24.6%200-13.8%2011.1-24.9%2024.9-24.9%2013.6%200%2024.6%2011.1%2024.6%2024.9%200%2013.6-11.1%2024.6-24.6%2024.6zM504%20256c0%20137-111%20248-248%20248S8%20393%208%20256%20119%208%20256%208s248%20111%20248%20248zm-132.3-41.2c-9.4%200-17.7%203.9-23.8%2010-22.4-15.5-52.6-25.5-86.1-26.6l17.4-78.3%2055.4%2012.5c0%2013.6%2011.1%2024.6%2024.6%2024.6%2013.8%200%2024.9-11.3%2024.9-24.9s-11.1-24.9-24.9-24.9c-9.7%200-18%205.8-22.1%2013.8l-61.2-13.6c-3-.8-6.1%201.4-6.9%204.4l-19.1%2086.4c-33.2%201.4-63.1%2011.3-85.5%2026.8-6.1-6.4-14.7-10.2-24.1-10.2-34.9%200-46.3%2046.9-14.4%2062.8-1.1%205-1.7%2010.2-1.7%2015.5%200%2052.6%2059.2%2095.2%20132%2095.2%2073.1%200%20132.3-42.6%20132.3-95.2%200-5.3-.6-10.8-1.9-15.8%2031.3-16%2019.8-62.5-14.9-62.5zM302.8%20331c-18.2%2018.2-76.1%2017.9-93.6%200-2.2-2.2-6.1-2.2-8.3%200-2.5%202.5-2.5%206.4%200%208.6%2022.8%2022.8%2087.3%2022.8%20110.2%200%202.5-2.2%202.5-6.1%200-8.6-2.2-2.2-6.1-2.2-8.3%200zm7.7-75c-13.6%200-24.6%2011.1-24.6%2024.9%200%2013.6%2011.1%2024.6%2024.6%2024.6%2013.8%200%2024.9-11.1%2024.9-24.6%200-13.8-11-24.9-24.9-24.9z'/%3e%3c/svg%3e){kind=small}