Hi,
The servers have moved to the new datacenter and I got it online
following the instruction.
# ceph -s
cluster:
id: 7712ab7e-3c38-44b3-96d3-4e1de9da0ff6
health: HEALTH_OK
services:
mon: 3 daemons, quorum ceph-mon1,ceph-mon2,ceph-mon3
mgr: ceph-mon3(active), standbys: ceph-mon1, ceph-mon2
mds: cephfs-1/1/1 up {0=ceph-mds=up:active}, 1 up:standby
osd: 63 osds: 63 up, 63 in
data:
pools: 4 pools, 640 pgs
objects: 108.6 k objects, 379 GiB
usage: 1.3 TiB used, 228 TiB / 229 TiB avail
pgs: 640 active+clean
Thanks guys:)
Eugen Block <eblock@xxxxxx> 于2019年2月27日周三 上午2:45写道：
Hi,
> Well, I've just reacted to all the text at the beginning of
> http://docs.ceph.com/docs/luminous/rados/operations/add-or-rm-mons/#changing-a-monitor-s-ip-address-the-messy-way
> including the title "the messy way". If the cluster is clean I see no
> reason for doing brain surgery on monmaps
> just to "save" a few minutes of redoing correctly from scratch.
with that I would agree. Careful planning and an installation
following the docs should be first priority. But I would also
encourage users to experiment with ceph before going into production.
Dealing with failures and outages on a production cluster causes much
more headache than on a test cluster. ;-)
If the cluster is empty anyway, I would also rather reinstall it, it
doesn't take that much time. I just wanted to point out that there is
a way that worked for me, although that was only a test cluster.
Regards,
Eugen
Zitat von Janne Johansson <icepic.dz@xxxxxxxxx>:
> Den mån 25 feb. 2019 kl 13:40 skrev Eugen Block <eblock@xxxxxx>:
>> I just moved a (virtual lab) cluster to a different network, it worked
>> like a charm.
>> In an offline method - you need to:
>>
>> - set osd noout, ensure there are no OSDs up
>> - Change the MONs IP, See the bottom of [1] "CHANGING A MONITOR’S IP
>> ADDRESS", MONs are the only ones really
>> sticky with the IP
>> - Ensure ceph.conf has the new MON IPs and network IPs
>> - Start MONs with new monmap, then start OSDs
>>
>> > No, certain ips will be visible in the databases, and those will
>> not change.
>> I'm not sure where old IPs will be still visible, could you clarify
>> that, please?
>
> Well, I've just reacted to all the text at the beginning of
> http://docs.ceph.com/docs/luminous/rados/operations/add-or-rm-mons/#changing-a-monitor-s-ip-address-the-messy-way
> including the title "the messy way". If the cluster is clean I see no
> reason for doing brain surgery on monmaps
> just to "save" a few minutes of redoing correctly from scratch. What
> if you miss some part, some command gives you an error
> you really aren't comfortable with, something doesn't really feel
> right after doing it, then the whole lifetime of that cluster
> will be followed by a small nagging feeling that it might have been
> that time you followed a guide that tries to talk you out of
> doing it that way, for a cluster with no data.
>
> I think that is the wrong way to learn how to run clusters.
>
> --
> May the most significant bit of your life be positive.
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