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Etienne PerotandgVisor bot
5ba2eb884a
This adds a command-line tool named `gvisor_k8s_tool` that allows running the
`runsc` installer image as a DaemonSet in a Kubernetes cluster, either through
GKE or through `kubectl` configuration.
Example:
```shell
# Install using default kubectl context:
$ ./gvisor_k8s_tool install --cluster=kube: --image=my-runsc-installer
# Install using custom kubectl config and context:
$ KUBECONFIG=/tmp/myconfig ./gvisor_k8s_tool \
install --cluster=kube:mycontext --image=my-runsc-installer
# Install in a GKE cluster:
$ ./gvisor_k8s_tool install \
--cluster=gke:projects/myproject/locations/us-central1-a/clusters/mylittlecluster \
--image=my-runsc-installer
```
PiperOrigin-RevId: 557945316
39 lines
1.3 KiB
Go
39 lines
1.3 KiB
Go
// Copyright 2023 The gVisor Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// Package util contains utility functions for gvisor_k8s_tools.
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package util
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import (
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"fmt"
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"os"
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"path"
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)
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// TempDir creates and returns the path to a private temporary directory.
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// The caller must call the given cleanup function to clean up the directory.
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func TempDir() (string, func(), error) {
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tempDir, err := os.MkdirTemp("", "gvisor_k8s_tool.*.tmp")
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if err != nil {
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return "", nil, err
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}
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// Create a private subdirectory (0700) within the temporary directory.
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privateSubdir := path.Join(tempDir, "tmp")
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if err := os.Mkdir(privateSubdir, 0700); err != nil {
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os.RemoveAll(tempDir)
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return "", nil, fmt.Errorf("cannot create subdir %q: %w", privateSubdir, err)
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}
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return privateSubdir, func() { os.RemoveAll(tempDir) }, nil
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}
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