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Unable to Start pf9-kube Service Due to Package Hold
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Problem
The pf9-kube service does not start on one of the nodes due to hold present on the docker-ce package with the following errors observed in the nodelet and kube logs.
x
pf9@host:/var/log/pf9$ less nodelet.logUse 'sudo apt autoremove' to remove them.The following packages will be REMOVED:docker-ce*The following held packages will be changed:docker-ce0 upgraded, 0 newly installed, 1 to remove and 1 not upgraded. E: Held packages were changed and -y was used without --allow-change-held-packages." func=main.startKubeService file="/pf9/nodelet/nodeletd.go:210"time="XXXX-XX-XXTXX:XX:XX-XX:XX" level=warning msg="Trying to start pf9-kube 66. Failed task on the last run was: Configure Docker" func=main.writeExtensionData file="/pf9/nodelet/nodeletd.go:261"time="XXXX-XX-XXTXX:XX:XX-XX:XX" level=warning msg="pf9-kube restarted due to failure of status check: Check if start operation in progress" func=main.writeExtensionData file="/pf9/nodelet/nodeletd.go:269"xxxxxxxxxxpf9@host:/var/log/pf9/kube$ less kube.logThe following packages have unmet dependencies:docker-ce : Depends: docker-ce-cli but it is not going to be installedE: Error, pkgProblemResolver::Resolve generated breaks, this may be caused by held packages.Environment
- Platform9 Managed Kubernetes - All Versions
- Docker
Cause
- Hold is present on the packages and can be verified using the following command.
xxxxxxxxxxpf9@host:/var/log/pf9$ apt-mark showholddocker-cedocker-ce-cliResolution
- Remove the hold on the packages.
xxxxxxxxxx$ apt-mark unhold [PackageName]- Once the hold is removed, the pf9-kube service starts successfully.
pf9@host:/var/log/pf9$ less nodelet.logtime="XXXX-XX-XXTXX:XX:XX-XX:XX" level=info msg="pf9-kube is already running..." func=main.handleKubeServiceStartState file="/pf9/nodelet/nodeletd.go:341"time="XXXX-XX-XXTXX:XX:XX-XX:XX" level=info msg="Expected service state: &{ClusterRole:master ClusterID:UUID ServiceState:true}" func=main.handleExpectedServiceState file="/pf9/nodelet/nodeletd.go:172"time="XXXX-XX-XXTXX:XX:XX-XX:XX" level=info msg="pf9-kube is already running..." func=main.handleKubeServiceStartState file="/pf9/nodelet/nodeletd.go:341"time="XXXX-XX-XXTXX:XX:XX-XX:XX" level=info msg="Expected service state: &{ClusterRole:master ClusterID:UUID ServiceState:true}" func=main.handleExpectedServiceState file="/pf9/nodelet/nodeletd.go:172"VariableType to search · ESC to discard
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