Blaine Gardner
5411fe4cde
cmd-reporter runs a command and puts the results of the command into a ConfigMap defined by its `--config-map-name` commandline flag. cmd-reporter is intended to be run as a Kubernetes job where an operator needs to run a single command and get return information back from the command which is more than just success/failure. The ConfigMap returned includes `stdout`, `stderr`, and `retcode` data from the command. The ConfigMap may be preexisting, in which case cmd-reporter will overwrite the return information in the ConfigMap. cmd-reporter labels the ConfigMap with `app=cmd-reporter`, and if the ConfigMap already has an app label which is different, cmd-reporter fails without modifying the ConfigMap so as not to overwrite another application's data in the event of a ConfigMap name+namespace collision. Signed-off-by: Blaine Gardner <blaine.gardner@suse.com>
57 lines
2.1 KiB
Go
57 lines
2.1 KiB
Go
/*
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Copyright 2019 The Rook Authors. All rights reserved.
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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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http://www.apache.org/licenses/LICENSE-2.0
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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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*/
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package util
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import (
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"fmt"
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"github.com/rook/rook/cmd/rook/rook"
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"github.com/rook/rook/pkg/daemon/util"
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"github.com/spf13/cobra"
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)
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// CopyBinsCmd defines a top-level utility command which copies rook and tini binaries from the Rook
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// container image to a directory.
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var CopyBinsCmd = &cobra.Command{
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Use: "copy-binaries",
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Short: "Copy 'rook' and 'tini' binaries from a container to a given directory.",
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Long: `Copy 'rook' and 'tini' binaries from a container to a given directory.
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As an example, 'cmd-reporter run' may often need to be run from a container
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other than the container containing the 'rook' binary. Use this command to copy
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the 'rook' and required 'tini' binaries from the container containing the 'rook'
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binary to a Kubernetes EmptyDir volume mounted at the given directory in a pod's
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init container. From the pod's main container, mount the volume which now
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contains the 'rook' and 'tini' binaries, and call 'rook cmd-reporter run' from
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'tini' in order to run the desired command from a non-Rook container.`,
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Args: cobra.NoArgs,
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RunE: runCopyBins,
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}
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func init() {
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// copy-binaries
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CopyBinsCmd.Flags().StringVar(©ToDir, "copy-to-dir", "",
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"The directory into which 'tini' and 'rook' binaries will be copied.")
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CopyBinsCmd.MarkFlagRequired("copy-to-dir")
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}
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func runCopyBins(cCmd *cobra.Command, cArgs []string) error {
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if err := util.CopyBinaries(copyToDir); err != nil {
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rook.TerminateFatal(fmt.Errorf("could not copy binaries to %s. %+v", copyToDir, err))
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}
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return nil
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}
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