ceph:extending_cluster_add_mons
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Table of Contents
Extending the cluster: Adding monitors
| Documentation | |
|---|---|
| Name: | Extending the cluster: Adding monitors |
| Description: | How to add more nodes to a running cluster |
| Modification date : | 19/07/2019 |
| Owner: | dodger@ciberterminal.net |
| Notify changes to: | Owner |
| Tags: | ceph, object storage |
Pre-Requisites
- Bootstrap new nodes
Variables used in this documentation
| Name | Description | Sample |
|---|---|---|
${THESERVER} | Variable used as salt target, it can be a mask of serves (see sample) | export THESERVER="pro-cephm-00[56]*" |
${NEWSERVERS} | Variable used for clonewars target and ceph-deploy | export NEWSERVERS="pro-cephm-005 pro-cephm-006" |
${VMNAMESTART} | Variable used to perform a regex in salt execution, it will match the environment (pro, demoenv …) | export VMNAMESTART="pro" |
Instructions
Method 1: ceph-deploy
As seen here:
ceph-deploy mon create ${NEWSERVERS}
Method 2: Manual (as official instructions)
As seen here:
As ceph user, in the admin node:
export TMPDIR=~/joining_ceph mkdir ${TMPDIR} cd ${TMPDIR} sudo ceph auth get mon. -o keyfile.txt sudo ceph mon getmap -o mapfile.bin for i in ${NEWSERVERS} ; do scp -r "${TMPDIR}" ${i}:${TMPDIR} ; done
Then in each new node:
export TMPDIR=~/joining_ceph sudo ceph-mon -i $(hostname) --mkfs --monmap ${TMPDIR}/mapfile.bin --keyring ${TMPDIR}/keyfile.txt
Method 3: Fully manual with fsid (the working one)
Maybe tomorrow…. today is late…
ceph/extending_cluster_add_mons.1563874530.txt.gz · Last modified: 2019/07/23 09:35 by dodger