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for CentOS Appliance only: ( smaller than v5.0)
Customers have full root access on the appliance and can therefore execute OS/Security updates at any point in time. During these yum updates/upgrades it may happen that GreenLight (built on docker) can not be successfully started up anymore because of the changes.
This article explains several cases which you can use in order to resolve your problem.
Please note that the docker daemon version has to be between v20 and v23 (docker -v)
After yum update, GreenLight can not be started any more
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