ceph-authtool 部署ceph-mds

admin

I'm trying to create ceph-mds manually on Centos 7 on Ceph Nautilus 14.2.19. first i created a folder inside /var/lib/ceph/mds in the format of <clusterid>-mds.<hostid> then ran the following commands:

( W" M7 S# D4 H) r! L; G( gceph-authtool --create-keyring /var/lib/ceph/mds/ceph-mds.<hostid>/keyring --gen-key -n mds.<hostid>
ceph auth add mds.<hostid> osd "allow rwx" mds "allow *" mon "allow profile mds" -i /var/lib/ceph/mds/ceph-mds.<hostid>/keyring

0 P' ^- {( _# q$ \/ H' B
3 O' y, t4 R) `1 I% B  L( BThen i changed user permissions of contents of /var/lib/ceph/mds/ to ceph:ceph. When i check the keyring and the keyring added on ceph auth list  for mds i can confirm they are matching.
2 w! J) V& u5 J1 {! V- lHowever when I run systemctl start ceph-mds@mds. the daemon doesnt start and on journalctl i get the following error output:
+ J# v. S6 J9 U/ x" ~Apr 20 11:38:14 <hostid> ceph-mds[44742]: 2021-04-20 11:38:14.592 7f53bcaef700 -1 monclient(hunting): handle_auth_bad_method server allowed_methods [2] but i only support [2]
9 R) }" Z( e" fApr 20 11:38:14 <hostid> ceph-mds[44742]: failed to fetch mon config (--no-mon-config to skip).


8 X. \+ R, j4 {/ [# Q+ p8 n! Z' dThe entire output of systemctl status ceph-mds@mds.:
# p+ D! k' a6 O0 K4 T6 _) e2 y● ceph-mds@mds.<hostid>.service - Ceph metadata server daemon
4 T, r2 ^# ~0 L% a   Loaded: loaded ([url=]/usr/lib/systemd/system/ceph-mds@.service[/url]; disabled; vendor preset: disabled)
6 y- X2 ^* H3 J' t- l   Active: failed (Result: start-limit) since Tue 2021-04-20 12:28:15 +03; 11min ago
6 Q# T7 C  \9 r4 J! J% I  Process: 15564 ExecStart=/usr/bin/ceph-mds -f --cluster ${CLUSTER} --id %i --setuser ceph --setgroup ceph (code=exited, status=1/FAILURE)
Main PID: 15564 (code=exited, status=1/FAILURE)
Apr 20 12:28:15 <hostid> systemd[1]: Unit ceph-mds@mds.<hostid>.service entered failed state.
Apr 20 12:28:15 <hostid> systemd[1]: ceph-mds@mds.<hostid>.service failed.
Apr 20 12:28:15 <hostid> systemd[1]: ceph-mds@mds.<hostid>.service holdoff time over, scheduling restart.
5 \3 `3 _* ~/ _Apr 20 12:28:15 <hostid> systemd[1]: Stopped Ceph metadata server daemon.
Apr 20 12:28:15 <hostid> systemd[1]: start request repeated too quickly for ceph-mds@mds.<hostid>.service
Apr 20 12:28:15 <hostid> systemd[1]: Failed to start Ceph metadata server daemon.
Apr 20 12:28:15 <hostid> systemd[1]: Unit ceph-mds@mds.<hostid>.service entered failed state.
Apr 20 12:28:15 <hostid> systemd[1]: ceph-mds@mds.<hostid>.service failed.


+ z$ e) q% M0 H' |6 v- kWhat might be the reason for this?

admin

[root@ceph-2 ceph-2]# mkdir -p /var/lib/ceph/mds/ceph-mds.ceph-2/
! r" A* {& J: ?$ d[root@ceph-2 ceph-2]# ceph-authtool --create-keyring /var/lib/ceph/mds/ceph-mds.ceph-2/keyring --gen-key -n mds.ceph-2
: T0 j& t! A7 k2 h! M/ k  kcreating /var/lib/ceph/mds/ceph-mds.ceph-2/keyring
0 G2 s3 d2 a! X
( P7 c/ G; w+ o9 B) |9 I- D* f7 b& f! T[root@ceph-2 ceph-2]# ceph auth add mds.ceph-2 osd "allow rwx" mds "allow *" mon "allow profile mds" -i /var/lib/ceph/mds/ceph-mds.ceph-2/keyring
) D: r9 [0 P( w- T
[root@ceph-2 ceph-2]# ceph auth add mds.ceph-2 osd "allow rwx" mds "allow *" mon "allow profile mds" -i /var/lib/ceph/mds/ceph-mds.ceph-2/keyring
8 }# W# w9 q! [7 A# badded key for mds.ceph-2
[root@ceph-2 ceph-2]#
% {2 i" _; r4 D8 ~

[root@ceph-2 mds]# chown -R ceph:ceph ceph-mds.ceph-2/

& V) t6 j! `* }0 |% e6 K: ~; x
7 ?. b, F$ V+ w- \9 F' @Jul 26 14:19:36 ceph-2.novalocal ceph-mds[40265]: NOTE: a copy of the executable, or `objdump -rdS <executable>` is needed to interpret this.
Jul 26 14:19:36 ceph-2.novalocal systemd[1]: ceph-mds@ceph-2.service: main process exited, code=killed, status=6/ABRT
Jul 26 14:19:36 ceph-2.novalocal systemd[1]: Unit ceph-mds@ceph-2.service entered failed state.
Jul 26 14:19:36 ceph-2.novalocal systemd[1]: ceph-mds@ceph-2.service failed.
: T  i2 i8 d* DJul 26 14:19:36 ceph-2.novalocal systemd[1]: ceph-mds@ceph-2.service holdoff time over, scheduling restart.
Jul 26 14:19:36 ceph-2.novalocal systemd[1]: Stopped Ceph metadata server daemon.
1 z- T4 k& o  p) [9 f2 }  a  d-- Subject: Unit ceph-mds@ceph-2.service has finished shutting down
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
& h; H' X. p1 ]3 v--
-- Unit ceph-mds@ceph-2.service has finished shutting down.
& _$ l$ i( Z: ^9 i9 k# C0 x$ uJul 26 14:19:36 ceph-2.novalocal systemd[1]: start request repeated too quickly for ceph-mds@ceph-2.service
Jul 26 14:19:36 ceph-2.novalocal systemd[1]: Failed to start Ceph metadata server daemon.
-- Subject: Unit ceph-mds@ceph-2.service has failed
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
. G1 j' b1 [" |) ~- a' N. R--
-- Unit ceph-mds@ceph-2.service has failed.
--
-- The result is failed.
Jul 26 14:19:36 ceph-2.novalocal systemd[1]: Unit ceph-mds@ceph-2.service entered failed state.
% g) {/ U5 E, [6 N7 AJul 26 14:19:36 ceph-2.novalocal systemd[1]: ceph-mds@ceph-2.service failed.