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This article is to share with you about how Ceph implements IP replacement and cluster startup. The editor thinks it is very practical, so share it with you as a reference and follow the editor to have a look.

Modify the ceph.conf file

Change host to modified IP

Override the synchronize cepf.conf file command

Ceph-deploy-overwrite-conf config push ceph-1 ceph-2 ceph-3

Generate the map of mon

Monmaptool-- create-- generate-c / etc/ceph/ceph.conf / etc/ceph/monmap

View the content in map monmaptool-- print monmap

Note: the name is not specified in the mon.

Monmaptool-- create-- generate-c / etc/ceph/ceph.conf / etc/ceph/monmap

The command is the content of the generated file. The default path of mon is in the / var/lib/ceph/mon/ directory, and the default name is

Ceph- {nodeName}

If the cluster is already crash, execute

Monmaptool-- create-- generate-c / etc/ceph/ceph.conf / etc/ceph/monmap

The name of the generated mon is incorrect. This name needs to be modified, like the following:

4. Delete the original mon node

Monmaptool-- rm noname-a-- rm noname-b-- rm noname-c monmapmonmaptool-- add dstore_002 10.112.101.141Rose 6789-- add dstore_003 10.112.101.143Rose 6789-- add dstore_004 10.112.101.142Rose 6789 monmap

# Command monmaptool for viewing monmap content-- print map

5. Copy monmap to other mon nodes and execute

Ceph-mon-I {nodename}-- inject-monmap monmap

6. Restart each mon node

Systemctl restart ceph-mon@ {nodename} .service Thank you for your reading! This is the end of the article on "how to implement IP replacement in Ceph, cluster startup". I hope the above content can be of some help to you, so that you can learn more knowledge. if you think the article is good, you can share it for more people to see!

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