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https://issues.apache.org/jira/browse/MESOS-9162?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16596432#comment-16596432
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A. Dukhovniy commented on MESOS-9162:
-------------------------------------
We had another manifestation of the unkillable pod task, however in a different
test. There is one thing that those tests all do -
1. they start a pod
2. kill it (either on the agent directly or through the Marathon)
3. restart the pod
The test **never fails in step1** but *always in step 3*. Also, all tests use
the same pod definition **which uses volume**.
I'll not attach new logs since they symptoms (container stuck in ISOLATING)
look the same.
/cc [~abudnik] [~gilbert] [~jieyu]
> Unkillable pod container stuck in ISOLATING
> -------------------------------------------
>
> Key: MESOS-9162
> URL: https://issues.apache.org/jira/browse/MESOS-9162
> Project: Mesos
> Issue Type: Bug
> Components: containerization
> Affects Versions: 1.6.0, 1.7.0
> Reporter: A. Dukhovniy
> Assignee: Gilbert Song
> Priority: Major
> Labels: container-stuck
> Attachments: dcos-marathon.service.log, dcos-mesos-master.service.gz,
> dcos-mesos-slave.service.gz, diagnostics.zip,
> sandbox_10_10_0_222_var_lib.tar.gz
>
>
> We have a simple test that launches a pod with two containers (one writes in
> a file and the other reads it). This test is flaky because the container
> sometimes fails to start.
> Marathon app definition:
> {code:java}
> {
> "id": "/simple-pod",
> "scaling": {
> "kind": "fixed",
> "instances": 1
> },
> "environment": {
> "PING": "PONG"
> },
> "containers": [
> {
> "name": "ct1",
> "resources": {
> "cpus": 0.1,
> "mem": 32
> },
> "image": {
> "kind": "DOCKER",
> "id": "busybox"
> },
> "exec": {
> "command": {
> "shell": "while true; do echo the current time is $(date) >
> ./test-v1/clock; sleep 1; done"
> }
> },
> "volumeMounts": [
> {
> "name": "v1",
> "mountPath": "test-v1"
> }
> ]
> },
> {
> "name": "ct2",
> "resources": {
> "cpus": 0.1,
> "mem": 32
> },
> "exec": {
> "command": {
> "shell": "while true; do echo -n $PING ' '; cat ./etc/clock; sleep
> 1; done"
> }
> },
> "volumeMounts": [
> {
> "name": "v1",
> "mountPath": "etc"
> },
> {
> "name": "v2",
> "mountPath": "docker"
> }
> ]
> }
> ],
> "networks": [
> {
> "mode": "host"
> }
> ],
> "volumes": [
> {
> "name": "v1"
> },
> {
> "name": "v2",
> "host": "/var/lib/docker"
> }
> ]
> }
> {code}
> During the test, Marathon tries to launch the pod but doesn't receive a
> {{TASK_RUNNING}} for the first container and so after 2min decides to kill
> the pod which also fails.
> Agent sandbox (attached to this ticket minus docker layers, since they're too
> big to attach) shows that one of the containers wasn't started properly - the
> last line in the agent log says:
> {code}
> Transitioning the state of container
> ff4f4fdc-9327-42fb-be40-29e919e15aee.e9b05652-e779-46f8-9b76-b2e1ce7e5940
> from PREPARING to ISOLATING
> {code}
> Until then the log looks pretty unspektakular.
> Afterwards, Marathon tries to kill the container repeatedly, but doesn't
> succeed - the executor receives the reuests but doesn't send anything back:
> {code}
> I0816 22:52:53.111995 4 default_executor.cpp:204] Received SUBSCRIBED
> event
> I0816 22:52:53.112520 4 default_executor.cpp:208] Subscribed executor on
> 10.10.0.222
> I0816 22:52:53.112783 4 default_executor.cpp:204] Received LAUNCH_GROUP
> event
> I0816 22:52:53.116516 11 default_executor.cpp:428] Setting
> 'MESOS_CONTAINER_IP' to: 10.10.0.222
> I0816 22:52:53.169596 4 default_executor.cpp:204] Received ACKNOWLEDGED
> event
> I0816 22:52:53.194416 10 default_executor.cpp:204] Received ACKNOWLEDGED
> event
> I0816 22:54:50.559470 8 default_executor.cpp:204] Received KILL event
> I0816 22:54:50.559496 8 default_executor.cpp:1251] Received kill for task
> 'simple-pod-bcc8f180b611494aa972520b8b650ca9.instance-1ad9ecbb-a1a7-11e8-b35a-6e17842c13e2.ct1'
> I0816 22:54:50.559737 4 default_executor.cpp:204] Received KILL event
> I0816 22:54:50.559751 4 default_executor.cpp:1251] Received kill for task
> 'simple-pod-bcc8f180b611494aa972520b8b650ca9.instance-1ad9ecbb-a1a7-11e8-b35a-6e17842c13e2.ct2'
> ...
> {code}
> Relevant Ids for grepping the logs:
> {code}
> Marathon app id: /simple-pod-bcc8f180b611494aa972520b8b650ca9
> Mesos tasks id:
> simple-pod-bcc8f180b611494aa972520b8b650ca9.instance-1ad9ecbb-a1a7-11e8-b35a-6e17842c13e2.ct1
> Mesos container id: e9b05652-e779-46f8-9b76-b2e1ce7e5940
> {code}
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