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Phuong Nguyen
Asked: 2015-01-13 07:52:27 +0800 CST

Change update strategy of CoreOS machine

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We want to temporary disable reboot on update for a CoreOS machine, since we haven't implemented high availability of our services yet. Is there away to achieve that other than editing the cloud-init configuration (provided when the machine being provisioned the first time)

coreos

1 Answers

  1. Best Answer

    CoreOS uses a tool called locksmith to coordinate reboots across the cluster. You can use this tool to temporarily prevent reboots by jumping onto a machine and running locksmithctl lock, which will indicate to the cluster that a machine has already taken the reboot slot and will keep it occupied until you run locksmithctl unlock.

    Your best bet however, is to edit the cloud-config.

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