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Add support for atomic host
Updates based on feedback Simplify checks for file exists remove invalid char Review feedback. Use regular systemd file. Add template for docker systemd atomic
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docs/atomic.md
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docs/atomic.md
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Atomic host bootstrap
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=====================
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Atomic host testing has been done with the network plugin flannel. Change the inventory var `kube_network_plugin: flannel`.
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Note: Flannel is the only plugin that has currently been tested with atomic
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### Vagrant
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* For bootstrapping with Vagrant, use box centos/atomic-host
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* Update VagrantFile variable `local_release_dir` to `/var/vagrant/temp`.
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* Update `vm_memory = 2048` and `vm_cpus = 2`
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* Networking on vagrant hosts has to be brought up manually once they are booted.
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```
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vagrant ssh
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sudo /sbin/ifup enp0s8
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```
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* For users of vagrant-libvirt download qcow2 format from https://wiki.centos.org/SpecialInterestGroup/Atomic/Download/
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Then you can proceed to [cluster deployment](#run-deployment)
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