2 Jun
2021
2 Jun
'21
7:12 a.m.
Ok - so looks like that 167 was a red herring. That was actually a valid result. The issue
is the container was starting up then dying.
Looks like this all went downhill as a result of me changing the name of an image (I had
named it iscsi-img-005 instead of iscsi-img-0005 to match all my other image names). Looks
like iSCSI gateway does not like that. It worked fine after the rename, but when I
redeployed the gateways, they never came back up. I saw an error in the logs that
indicated it was having trouble with that name.
I managed to get things back up and running on one gateway after a lot of messing around
getting it to the point where I could delete the configuration that it didn’t like. Right
now I’m running on one gateway fine. I tried to scale back up to 4 servers and the other
three all have different issues. One comes up, but when I try to provision a target to use
it, I get an out of index error. On the 3rd the docker containers come up, but the gateway
never shows up. The 4th the containers never come up because it fails with this message:
subprocess.CalledProcessError: Command 'ceph -n
client.iscsi.iscsi.cxcto-c240-j27-05.noraaw --conf /etc/ceph/ceph.conf osd blacklist rm
10.122.242.200:6977/1317769556' returned non-zero exit status 13.
I feel like it would probably be best to just wipe all the iscsi gateway configuration and
start from scratch with the iSCSI configuration piece - however even when I remove the
service (ceph orch rm iscsi.iscsi) the configuration appears to still be maintained.
Where is all this configuration stored? Is there a way to completely remove it to start
the iscsi gateways on a clean slate?
-Paul
On Jun 1, 2021, at 8:05 PM, Paul Giralt (pgiralt)
<pgiralt(a)cisco.com> wrote:
CEPH 16.2.4. I was having an issue where I put a server into maintenance mode and after
doing so, the containers for the iSCSI gateway were not running, so I decided to do a
redeploy of the service. This caused all the servers running iSCSI to get in a state where
it looks like ceph orch was trying to delete the container, but it was stuck. My only
recourse was to reboot the servers. I ended up doing a ‘ceph orch rm iscsi.iscsi’ to just
remove the services and then tried to redeploy. When I do this, I’m seeing the following
in the cephadm logs on the servers where the iscsi gateway is being deployed:
2021-06-01 19:48:15,110 INFO Deploy daemon iscsi.iscsi.cxcto-c240-j27-02.zeypah ...
2021-06-01 19:48:15,111 DEBUG Running command: /bin/docker run --rm --ipc=host --net=host
--entrypoint stat --init -e
CONTAINER_IMAGE=docker.io/ceph/ceph@sha256:54e95ae1e11404157d7b329d0bef866ebbb214b195a009e87aae4eba9d282949
-e NODE_NAME=cxcto-c240-j27-02.cisco.com -e CEPH_USE_RANDOM_NONCE=1
docker.io/ceph/ceph@sha256:54e95ae1e11404157d7b329d0bef866ebbb214b195a009e87aae4eba9d282949
-c %u %g /var/lib/ceph
2021-06-01 19:48:15,529 DEBUG stat: 167 167
Later in the logs I see:
2021-06-01 19:48:25,933 DEBUG Running command: /bin/docker inspect --format
{{.Id}},{{.Config.Image}},{{.Image}},{{.Created}},{{index .Config.Labels
"io.ceph.version"}}
ceph-a67d529e-ba7f-11eb-940b-5c838f8013a5-iscsi.iscsi.cxcto-c240-j27-02.zeypah
2021-06-01 19:48:25,984 DEBUG /bin/docker:
2021-06-01 19:48:25,984 DEBUG /bin/docker: Error: No such object:
ceph-a67d529e-ba7f-11eb-940b-5c838f8013a5-iscsi.iscsi.cxcto-c240-j27-02.zeypah
Obviously no such object because the container creation failed.
If I try to run that command that is in the logs manually, I get:
[root@cxcto-c240-j27-02 ceph]# /bin/docker run --rm --ipc=host --net=host --entrypoint
stat --init -e
CONTAINER_IMAGE=docker.io/ceph/ceph@sha256:54e95ae1e11404157d7b329d0bef866ebbb214b195a009e87aae4eba9d282949
-e NODE_NAME=cxcto-c240-j27-02.cisco.com -e CEPH_USE_RANDOM_NONCE=1
docker.io/ceph/ceph@sha256:54e95ae1e11404157d7b329d0bef866ebbb214b195a009e87aae4eba9d282949
-c %u %g /var/lib/ceph
stat: cannot stat '%g': No such file or directory
167
So the 167 seems to line up with what’s showing up in the script. I’m not clear on what
the deal is with the %g. What is supposed to be in that placeholder? Any thoughts on why
this is failing?
Right now all my iSCSI gateways are down and basically my whole environment is down as a
result 🙁
-Paul
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