Re: Starting service rbd-target-api fails

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Hi Mike,

actually you point to the right log; I can find relevant information in
this logfile /var/log/rbd-target-api/rbd-target-api.log:
root@ld5505:~# tail -f /var/log/rbd-target-api/rbd-target-api.log
2019-12-04 12:09:52,986    ERROR [rbd-target-api:2918:<module>()] -
'rbd' pool does not exist!
2019-12-04 12:09:52,986 CRITICAL [rbd-target-api:2736:halt()] - Unable
to open/read the configuration object
2019-12-04 12:09:53,474    DEBUG [common.py:128:_open_ioctx()] -
(_open_ioctx) Opening connection to rbd pool
2019-12-04 12:09:53,481    ERROR [common.py:133:_open_ioctx()] -
(_open_ioctx) rbd does not exist
2019-12-04 12:09:53,481    ERROR [rbd-target-api:2918:<module>()] -
'rbd' pool does not exist!
2019-12-04 12:09:53,481 CRITICAL [rbd-target-api:2736:halt()] - Unable
to open/read the configuration object
2019-12-04 12:09:53,977    DEBUG [common.py:128:_open_ioctx()] -
(_open_ioctx) Opening connection to rbd pool
2019-12-04 12:09:53,986    ERROR [common.py:133:_open_ioctx()] -
(_open_ioctx) rbd does not exist
2019-12-04 12:09:53,986    ERROR [rbd-target-api:2918:<module>()] -
'rbd' pool does not exist!
2019-12-04 12:09:53,986 CRITICAL [rbd-target-api:2736:halt()] - Unable
to open/read the configuration object

This error message is clear: pool 'rbd' does not exist.

However, this pool does exist:
root@ld5505:~# ceph osd pool ls detail
pool 11 'hdb_backup' replicated size 3 min_size 2 crush_rule 1
object_hash rjenkins pg_num 16384 pgp_num 16384 last_change 404671 lfor
0/0/319352 flags hashpspool,selfmanaged_snaps stripe_width 0 pg_num_min
8192 application rbd
        removed_snaps [1~3]
pool 59 'hdd' replicated size 3 min_size 2 crush_rule 3 object_hash
rjenkins pg_num 2048 pgp_num 2048 last_change 319283 lfor
307105/317145/317153 flags hashpspool,selfmanaged_snaps stripe_width 0
pg_num_min 1024 application rbd
        removed_snaps [1~3]
pool 62 'cephfs_data' replicated size 3 min_size 2 crush_rule 3
object_hash rjenkins pg_num 32 pgp_num 32 last_change 319282 lfor
300310/300310/300310 flags hashpspool stripe_width 0 pg_num_min 32
application cephfs
pool 63 'cephfs_metadata' replicated size 3 min_size 2 crush_rule 3
object_hash rjenkins pg_num 8 pgp_num 8 last_change 319280 flags
hashpspool stripe_width 0 pg_autoscale_bias 4 pg_num_min 8
recovery_priority 5 application cephfs
pool 65 'nvme' replicated size 2 min_size 2 crush_rule 2 object_hash
rjenkins pg_num 128 pgp_num 128 last_change 319281 flags hashpspool
stripe_width 0 pg_num_min 128 application rbd
pool 66 'ssd' replicated size 2 min_size 2 crush_rule 4 object_hash
rjenkins pg_num 1024 pgp_num 1024 last_change 405344 lfor 0/0/405339
flags hashpspool stripe_width 0 pg_num_min 512 application rbd
pool 67 'rbd' replicated size 3 min_size 2 crush_rule 3 object_hash
rjenkins pg_num 32 pgp_num 32 last_change 457155 flags hashpspool
stripe_width 0 application rbd

So, the next issue is:
Why is the required pool 'rbd' not identified?

Remark:
Pool 67 'rbd' was renamed, means the original name was 'iscsi'.
I hope this is not the root cause.

THX

Am 05.12.2019 um 19:15 schrieb Mike Christie:
> On 12/05/2019 03:16 AM, Thomas Schneider wrote:
>> Hi,
>>
>> I want to setup Ceph iSCSI Gateway and I follow this
>> <https://docs.ceph.com/docs/master/rbd/iscsi-overview/> documentation.
>> In step "Setup" of process "Configuring the iSCSI target using the
>> command line interface
>> <https://docs.ceph.com/docs/master/rbd/iscsi-target-cli/>" I cannot
>> start service rbd-target-api.
>>
>> There's no error message in status or anywhere else:
>> root@ld5505:~# systemctl status rbd-target-api
>> _ rbd-target-api.service - Ceph iscsi target configuration API
>>    Loaded: loaded (/lib/systemd/system/rbd-target-api.service; enabled;
>> vendor preset: enabled)
>>    Active: failed (Result: exit-code) since Wed 2019-12-04 13:47:51 CET;
>> 3min 16s ago
>>   Process: 4143457 ExecStart=/usr/bin/rbd-target-api (code=exited,
>> status=1/FAILURE)
>>  Main PID: 4143457 (code=exited, status=1/FAILURE)
>>
>> Dec 04 13:47:51 ld5505 systemd[1]: rbd-target-api.service: Service
>> RestartSec=100ms expired, scheduling restart.
>> Dec 04 13:47:51 ld5505 systemd[1]: rbd-target-api.service: Scheduled
>> restart job, restart counter is at 3.
>> Dec 04 13:47:51 ld5505 systemd[1]: Stopped Ceph iscsi target
>> configuration API.
>> Dec 04 13:47:51 ld5505 systemd[1]: rbd-target-api.service: Start request
>> repeated too quickly.
>> Dec 04 13:47:51 ld5505 systemd[1]: rbd-target-api.service: Failed with
>> result 'exit-code'.
>> Dec 04 13:47:51 ld5505 systemd[1]: Failed to start Ceph iscsi target
>> configuration API.
>>
> Check /var/log/messages and journalctl for rbd-target-api messages.
> There is also a log in /var/log/rbd-target-api/rbd-target-api.log, but I
> thinking we probably crashed before we got anything useful there.
>
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