Installing Mongo set

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    Art van Scheppingen

    Hi Evgeniy,

    Thank you very much for reporting this issue.

    By default we set the swappiness on any database node to ensure the optimal performance from this host. The ClusterControl backend is sending out the commands, so deployments aren't following a script. We could make the update of the swappiness non-fatal.

    However, this raises another issue: which parts of the filesystem of your virtual is read-only? We are updating the vm.swappiness in /etc/sysctl.conf using systctl to persist this. If we are deploying MongoDB we will have to write its config in /etc as well, and also some helper packages that get installed may also require writing to /etc.

    Best regards,

    Art

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