Ceph2
Ceph2
Сборник рецептов по ceph
Удаление OSD из кластера
123- номер OSD на удалениеnode-2- хостнейм ноды на котрой этот OSDsdd- блочное устройство
Пометить OSD out из кластера Ceph
ceph osd out osd.123
Remove the failed OSD from the CRUSH map
ceph osd crush rm osd.123
Delete Ceph authentication keys for the OSD
ceph auth del osd.123
Remove the OSD from the Ceph cluster
ceph osd rm osd.123
Please keep in mind that whenever an OSD is unavailable your cluster health will not be OK, and it will continue to perform the recovery which is a normal Ceph operation in this situation. 5. So as long as the server is hot swappable which it should be, then just put the new drive in and perform the following tasks. If its node-2 then, keep in mind you will need to use the name of your node.
ceph-deploy disk list node-2
Before adding the disk to the Ceph cluster, perform a disk zap
(Watch the output of the disk list for the location that gets assigned, that will be the location that you will run the osd create command on. For example if disk list output is [node-2][DEBUG ] /dev/sdd other, btrfs then disk zap will be the following:
ceph-deploy disk zap node-2:sdd
Create an OSD on the disk, and Ceph will add it as osd.123
ceph-deploy --overwrite-conf osd create node-2:sdd
Additional Information
Once an OSD is created Ceph will run a recovery operation and start moving placement groups from secondary OSDs to the new OSD. Again the recovery operation will take a while depending on the size of your cluster, once it is completed your Ceph cluster will be HEALTH_OK.
When a new host or disk is added to a Ceph cluster, CRUSH starts a rebalancing operation, under which it moves the data from existing hosts/disks to a new host/ disk. Rebalancing is performed to keep all disks equally utilized, which improves the cluster performance and keeps it healthy. Internal Notes
