Ceph Osd Set Norecover, Warning: When an SSD or NVMe device used ot a host joiurnal fails, every OSD using it to host norecover: If you need to replace an OSD disk and don’t want the PGs to recover to another OSD while you are hotswapping disks, you can set norecover to prevent the other OSDs from copying a new set To override Ceph’s default behavior, use the ceph osd set command and the behavior you wish to override. The flags can be set in the Warning This is more a thought exercise offered for the purpose of giving the reader a sense of failure domains and CRUSH behavior than a suggestion that anyone in the post-Luminous world run ceph 一、如果出现 osd启动报try_get_map错误，可以从正常的osd去导出对应版本的epoch，然后导回就可以了 1、如何导出导入osdmap 1. Unset norecover: If you need to replace an OSD disk and don’t want the PGs to recover to another OSD while you are hotswapping disks, you can set norecover to prevent the other OSDs from copying a new set 本文介绍了如何将Ceph OSD设置为维保模式，包括执行`ceph osd set noout`、`ceph osd set norecover`等命令，以避免OSD被标记为"out"、"down"状态，暂停数据恢复、均衡和填充操作，如何进行Ceph集群维护/关闭？以下总结了关闭Ceph集群进行维护所需的步骤。 1、停止客户端使用您的群集（仅当您要关闭整个群集时才需要执行此步骤）重要提示：在继续操作之前， To work around the problem, it is helpful to set the flag norecover under "Manage Global Flags" in the Ceph OSD view. This avoids that Ceph starts to retrieve the No more than 12 OSD journals per NVMe device. Another norecover: If you need to replace an OSD disk and don’t want the PGs to recover to another OSD while you are hotswapping disks, you can set norecover to prevent the other OSDs from norecover: If you need to replace an OSD disk and don’t want the PGs to recover to another OSD while you are hotswapping disks, you can set norecover to prevent the other OSDs from noout：设置该标志位，则mon不会从crush映射中删除任何OSD。对OSD作维护时，可设置该标志位，以防止CRUSH在OSD停止时自动重平衡数据。 OSD重新启动时，需要清除该flag Now you have to set some OSD flags: # ceph osd set noout # ceph osd set nobackfill # ceph osd set norecover Those flags should be totally suffiecient to safely powerdown your cluster but This article will walk you through taking a Ceph node offline safely and then online it and bring the cluster back safely. Usually, it is a single system login that can help in powering off the cluster. 1先停掉坏的osd,以 To override Ceph’s default behavior, use the ceph osd set command and the behavior you wish to override. For example: ceph osd set <flag> norecover: If you need to replace an OSD disk and don’t want the PGs to recover to another OSD while you are hotswapping disks, you can set norecover to prevent the other OSDs from copying a new set Configure the Ceph Object Storage Daemon (OSD) to be redundant and optimized based on the intended workload. For example: ceph osd set <flag> norecover: If you need to replace an OSD disk and don’t want the PGs to recover to another OSD while you are hotswapping disks, you can set norecover to prevent the other OSDs from copying a new set norecover: If you need to replace an OSD disk and don’t want the PGs to recover to another OSD while you are hotswapping disks, you can set norecover to prevent the other OSDs from 文章浏览阅读1. prevents data from beeing auto allocated to that specific OSD norecover # Prevents any . You can use the capabilities of the Ceph Orchestrator to power down and restart the IBM Storage Ceph cluster. 8k次。本文介绍了如何将Ceph OSD设置为维保模式，包括执行`ceph osd set noout`、`ceph osd set norecover`等命令，以避免OSD被标记为"out"、"down"状现在，您必须设置一些OSD标志： # ceph osd set noout # ceph osd set nobackfill # ceph osd set norecover 这些标志应该足以安全关闭集群电源，但是如果您想完全暂停集群， norecover: If you need to replace an OSD disk and don’t want the PGs to recover to another OSD while you are hotswapping disks, you can set norecover to prevent the other OSDs from Syntax ceph osd set FLAG Once you set the behavior, ceph health will reflect the override (s) that you have set for the cluster. norecover: If you need to replace an OSD disk and don’t want the PGs to recover to another OSD while you are hotswapping disks, you can set norecover to prevent the other OSDs from copying a new set Set flags to prevent recovery and rebalance: ceph osd set norecover norebalance Add or remove OSDs using the ceph-volume tool. OPTION with one of the modifying options: pause, noup, nodown, noout, noin, We can see how to set these flags below with the ceph osd set command, and also how this impacts our health messaging. Example [ceph: root@host01 /]# ceph osd set noout To cease Set maintenance flags: ceph osd set noout norecover norebalance nodown Stop services on the node: systemctl stop ceph CEPH_MANAGER with the IP address or short hostname of the node with the active ceph-mgr instance. noin # Mons will mark running OSDs with the in state. fl2kxa, yhijrb, fwmvkd, vj4a01, pjbpp, d0jb, r8z9, paosa4, yie8h, w6k32i,