Hey everyone,
today a bit for entertainment: Did you ever wonder how old the oldest
ceph cluster is in the world?
I think can easily answer that, because I have logged into it today! The
oldest cluster is ... drum rolls...: 136 years old and was setup in 1886!
Don't believe me? As a proof, attached is the ceph -s output:
--------------------------------------------------------------------------------
ceph -s
cluster:
id: ...
health: HEALTH_WARN
mons are allowing insecure global_id reclaim
clock skew detected on mon.b, mon.c
611 slow ops, oldest one blocked for 2014 sec, mon.c has slow ops
services:
mon: 3 daemons, quorum a,b,c (age 35m)
mgr: a(active, since 136y)
osd: 14 osds: 14 up (since 136y), 14 in (since 136y)
data:
pools: 2 pools, 288 pgs
objects: 1 objects, 19 B
usage: 117 MiB used, 1.9 TiB / 1.9 TiB avail
pgs: 288 active+clean
--------------------------------------------------------------------------------
It is somewhat impressive that the disks in it also lasted 136 years,
but given the setup date, I assume that the cluster likely used paper
based drives and thus the 136 years are somewhat reasonable expectation
for storage...
Hope this made your evening like it made mine.
Best regards,
Nico
p.s.: In case you wonder what is going on - I assume this is a bug in
ceph-mgr happening due to time shifting / clock synchronisation. But to
be fair, it's still pretty cool, given that this piece of software was
written in 1886...
--
Sustainable and modern Infrastructures by ungleich.ch
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