linux:ceph:howtos:howto_remove_pool
Table of Contents
[HOWTO] Completely remove a POOL from cluster
Documentation | |
---|---|
Name: | [HOWTO] Completely remove a POOL from cluster |
Description: | HOW TO Completely remove a POOL from cluster (hardcore edition) |
Modification date : | 13/06/2018 |
Owner: | dodger |
Notify changes to: | Owner |
Tags: | ceph, object storage |
Scalate to: | The_fucking_bofh |
Variables used in this documentation
Name | Description | Sample |
---|---|---|
${POOL_NAME} | Name of the gw node | export POOL_NAME="new.default.rgw.buckets.data" |
Instructions
Removing a pool will DESTROY all the data inside, there will be no way to recover it:
Error EPERM: WARNING: this will *PERMANENTLY DESTROY* all data stored in pool new.default.rgw.buckets.data. If you are *ABSOLUTELY CERTAIN* that is what you want, pass the pool name *twice*, followed by --yes-i-really-really-mean-it.
Droping a pool:
ceph osd pool delete ${POOL_NAME}
Will result in the upper message:
Error EPERM: WARNING: this will *PERMANENTLY DESTROY* all data stored in pool ${POOL_NAME}. If you are *ABSOLUTELY CERTAIN* that is what you want, pass the pool name *twice*, followed by --yes-i-really-really-mean-it.
So:
ceph osd pool delete ${POOL_NAME} ${POOL_NAME} --yes-i-really-really-mean-it
That by default will show a message:
Error EPERM: pool deletion is disabled; you must first set the mon_allow_pool_delete config option to true before you can destroy a pool
So you need to change that parameter prior to dropping the pool:
ceph tell mon.${x} injectargs '--mon-allow-pool-delete=true'
Where ${x}
is the master monitor (I suppose any mon
on the pool will propagate the setting).
Then drop the pool:
ceph osd pool delete ${POOL_NAME} ${POOL_NAME} --yes-i-really-really-mean-it
And re-set the parameter, THIS IS MANDATORY:
ceph tell mon.${x} injectargs '--mon-allow-pool-delete=false'
linux/ceph/howtos/howto_remove_pool.txt · Last modified: 2022/02/11 11:36 by 127.0.0.1