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Two handlers are added to admin API to enable profiling and disable
profiling of a server in a standalone mode, or all nodes in the
distributed mode.
/minio/admin/profiling/start/{cpu,block,mem}:
- Start profiling and return starting JSON results, e.g. one
node is offline.
/minio/admin/profiling/download:
- Stop the on-going profiling task
- Stream a zip file which contains all profiling files that can
be later inspected by go tool pprof
90 lines
2.3 KiB
Go
90 lines
2.3 KiB
Go
// +build ignore
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/*
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* Minio Cloud Storage, (C) 2017 Minio, Inc.
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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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*
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*/
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package main
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import (
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"io"
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"log"
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"os"
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"time"
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"github.com/minio/minio/pkg/madmin"
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)
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func main() {
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// Note: YOUR-ACCESSKEYID, YOUR-SECRETACCESSKEY are
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// dummy values, please replace them with original values.
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// Note: YOUR-ACCESSKEYID, YOUR-SECRETACCESSKEY are
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// dummy values, please replace them with original values.
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// API requests are secure (HTTPS) if secure=true and insecure (HTTPS) otherwise.
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// New returns an Minio Admin client object.
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madmClnt, err := madmin.New("your-minio.example.com:9000", "YOUR-ACCESSKEYID", "YOUR-SECRETACCESSKEY", true)
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if err != nil {
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log.Fatalln(err)
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}
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profiler := madmin.ProfilerCPU
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log.Println("Starting " + profiler + " profiling..")
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startResults, err := madmClnt.StartProfiling(profiler)
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if err != nil {
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log.Fatalln(err)
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}
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for _, result := range startResults {
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if !result.Success {
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log.Printf("Unable to start profiling on node `%s`, reason = `%s`\n", result.NodeName, result.Error)
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continue
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}
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log.Printf("Profiling successfully started on node `%s`\n", result.NodeName)
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}
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sleep := time.Duration(10)
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time.Sleep(time.Second * sleep)
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log.Println("Stopping profiling..")
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profilingData, err := madmClnt.DownloadProfilingData()
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if err != nil {
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log.Fatalln(err)
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}
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profilingFile, err := os.Create("/tmp/profiling-" + string(profiler) + ".zip")
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if err != nil {
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log.Fatal(err)
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}
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if _, err := io.Copy(profilingFile, profilingData); err != nil {
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log.Fatal(err)
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}
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if err := profilingFile.Close(); err != nil {
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log.Fatal(err)
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}
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if err := profilingData.Close(); err != nil {
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log.Fatal(err)
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}
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log.Println("Profiling files " + profilingFile.Name() + " successfully downloaded.")
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}
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