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Bug 1568772

Summary: Installer should prevent from installing dockergc if docker storage driver is devicemapper
Product: OpenShift Container Platform Reporter: Gan Huang <ghuang>
Component: DocumentationAssignee: Kathryn Alexander <kalexand>
Status: CLOSED CURRENTRELEASE QA Contact: Johnny Liu <jialiu>
Severity: medium Docs Contact: Vikram Goyal <vigoyal>
Priority: medium    
Version: 3.9.0CC: aos-bugs, jokerman, mmccomas, mpatel, sdodson, wmeng
Target Milestone: ---Keywords: Reopened
Target Release: 3.9.z   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of:
: 1591190 (view as bug list) Environment:
Last Closed: 2018-08-09 18:37:33 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On:    
Bug Blocks: 1591190    

Description Gan Huang 2018-04-18 09:04:01 UTC 
Description of problem:
dockergc pods would get crashed if docker storage driver is devicemapper.

Please see Bug 1511400.

Installer/OpenShift health check should stop from moving the installation forward.

Version-Release number of the following components:
openshift-ansible-3.9.22-1.git.7.92620c6.el7.noarch.rpm

How reproducible:
always

Steps to Reproduce:
1. trigger installation with devicemapper docker storage driver 
# cat inventory
<--snip-->
openshift_crio_use_rpm=true
openshift_crio_docker_gc_node_selector={"role": "node"}
<--snip-->

Actual results:
Installation succeeded, but dockergc pods got crashed:

# oc get po
NAME                       READY     STATUS             RESTARTS   AGE
docker-registry-1-xb8wj    1/1       Running            0          1h
dockergc-rrxsd             0/1       CrashLoopBackOff   24         1h
dockergc-xj6tv             0/1       CrashLoopBackOff   23         1h
registry-console-1-nsw8q   1/1       Running            0          1h
router-1-tp2vq             1/1       Running            0          1h

# oc logs dockergc-rrxsd
I0418 08:17:17.462417       1 dockergc.go:242] docker build garbage collection daemon
I0418 08:17:17.462537       1 dockergc.go:246] MinimumGCAge: {1h0m0s}, ImageGCHighThresholdPercent: 80, ImageGCLowThresholdPercent: 60


Expected results:

Additional info:
Please attach logs from ansible-playbook with the -vvv flag
Comment 1 Scott Dodson 2018-08-06 12:43:20 UTC 
Opened a docs pr to suggest only setting the node selector to match hosts with overlay2.

https://github.com/openshift/openshift-docs/pull/11392
Comment 2 Scott Dodson 2018-08-06 12:43:53 UTC 
Didn't mean to close this.
Comment 3 Johnny Liu 2018-08-09 03:35:08 UTC 
LGTM.
Comment 4 Kathryn Alexander 2018-08-09 15:20:18 UTC 
I've merged and cherry-picked the PR. It should be live soon.
Comment 5 Kathryn Alexander 2018-08-09 18:37:33 UTC 
This is fixed on docs.openshift:
- https://docs.openshift.com/container-platform/3.7/release_notes/ocp_3_7_release_notes.html#ocp-37-crio
- https://docs.openshift.com/container-platform/3.9/release_notes/ocp_3_9_release_notes.html#ocp-39-crio

and on the portal:

- https://access.redhat.com/documentation/en-us/openshift_container_platform/3.9/html-single/release_notes/#ocp-39-crio
- https://access.redhat.com/documentation/en-us/openshift_container_platform/3.7/html-single/release_notes/#ocp-37-crio