Replaces kubelet-extra-args.conf in /etc/systemd/system/kubelet.service.d/ on each of the kubernetes nodes and restarts the service to apply the new config.
The file provided by default allows containers to apply any sysctls in the net namespace. As of this writing, we use it primarily to enable net.core.somaxconn in our containers which is an "unsafe" sysctl, i.e. not isolated between different pods on a node. See the k8s docs on sysctls. If you have existing options or additional extra args to add to the kubelet, modify the role vars
AIStore proxy and target Pods under load receive a very high number of
socket connections from GPU client nodes.
If average object size is small then the connection rate is correspondingly higher, and it is easy to
overwhelm the socket listen queue depth.
Modifying net.core.somaxconn increases this queue.
$ ansible-playbook -i ../hosts.ini config_kubelet.ymlThis should be run for all nodes that may host an AIStore Pod.