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113 lines
3.2 KiB
113 lines
3.2 KiB
//go:build linux
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// +build linux
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package containerd
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import (
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"errors"
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"io/fs"
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"os/exec"
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"github.com/k3s-io/k3s/pkg/agent/templates"
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"github.com/sirupsen/logrus"
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)
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// A map with string as value and `templates.ContainerdRuntimeConfig` as values.
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// The key holds the name of the runtime
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type runtimeConfigs map[string]templates.ContainerdRuntimeConfig
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// searchForRuntimes searches for runtimes and add into foundRuntimes
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// It checks the PATH for the executables
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func searchForRuntimes(potentialRuntimes runtimeConfigs, foundRuntimes runtimeConfigs) {
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// Fill in the binary location with just the name of the binary,
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// and check against each of the possible locations. If a match is found,
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// set the location to the full path.
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for runtimeName, runtimeConfig := range potentialRuntimes {
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logrus.Debugf("Searching for %s container runtime", runtimeName)
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path, err := exec.LookPath(runtimeConfig.BinaryName)
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if err != nil {
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if errors.Is(err, fs.ErrNotExist) {
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logrus.Debugf("%s container runtime not found in $PATH: %v", runtimeName, err)
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} else {
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logrus.Debugf("Error searching for %s in $PATH: %v", runtimeName, err)
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}
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continue
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}
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logrus.Infof("Found %s container runtime at %s", runtimeName, path)
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runtimeConfig.BinaryName = path
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foundRuntimes[runtimeName] = runtimeConfig
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}
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}
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// findContainerRuntimes is a function that searches for all the runtimes and
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// return a list with all the runtimes that have been found
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func findContainerRuntimes() runtimeConfigs {
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foundRuntimes := runtimeConfigs{}
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findCRunContainerRuntime(foundRuntimes)
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findNvidiaContainerRuntimes(foundRuntimes)
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findWasiRuntimes(foundRuntimes)
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return foundRuntimes
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}
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func findCRunContainerRuntime(foundRuntimes runtimeConfigs) {
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potentialRuntimes := runtimeConfigs{
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"crun": {
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RuntimeType: "io.containerd.runc.v2",
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BinaryName: "crun",
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},
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}
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searchForRuntimes(potentialRuntimes, foundRuntimes)
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}
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func findNvidiaContainerRuntimes(foundRuntimes runtimeConfigs) {
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potentialRuntimes := runtimeConfigs{
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"nvidia": {
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RuntimeType: "io.containerd.runc.v2",
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BinaryName: "nvidia-container-runtime",
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},
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"nvidia-experimental": {
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RuntimeType: "io.containerd.runc.v2",
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BinaryName: "nvidia-container-runtime-experimental",
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},
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}
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searchForRuntimes(potentialRuntimes, foundRuntimes)
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}
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func findWasiRuntimes(foundRuntimes runtimeConfigs) {
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potentialRuntimes := runtimeConfigs{
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"lunatic": {
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RuntimeType: "io.containerd.lunatic.v1",
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BinaryName: "containerd-shim-lunatic-v1",
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},
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"slight": {
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RuntimeType: "io.containerd.slight.v1",
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BinaryName: "containerd-shim-slight-v1",
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},
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"spin": {
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RuntimeType: "io.containerd.spin.v2",
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BinaryName: "containerd-shim-spin-v2",
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},
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"wws": {
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RuntimeType: "io.containerd.wws.v1",
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BinaryName: "containerd-shim-wws-v1",
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},
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"wasmedge": {
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RuntimeType: "io.containerd.wasmedge.v1",
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BinaryName: "containerd-shim-wasmedge-v1",
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},
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"wasmer": {
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RuntimeType: "io.containerd.wasmer.v1",
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BinaryName: "containerd-shim-wasmer-v1",
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},
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"wasmtime": {
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RuntimeType: "io.containerd.wasmtime.v1",
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BinaryName: "containerd-shim-wasmtime-v1",
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},
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}
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searchForRuntimes(potentialRuntimes, foundRuntimes)
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}
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