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When k3s is installed on an OS with default high ulimits, performance issues can be observed. This was discovered on CoreOS where the default value is 1073741816. Symptoms include very slow file operations such as installing a Rook/Ceph cluster will take ~6 hours instead of ~10 minutes. A google search for 'container LimitNOFILE' will show that most major projects set this already, including the (unused) containerd systemd unit found in this repository at /vendor/github.com/containerd/containerd/containerd.service k3OS is not affected becuasse the default there is already 1048576. See description in coreos/fedora-coreos-tracker#329 |
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k3s.service.j2 |