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Add Profiler Admin API (#6463)

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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
This commit is contained in:
Anis Elleuch
2018-09-19 00:46:35 +01:00
committed by kannappanr
parent 6fe9a613c0
commit 9531cddb06
20 changed files with 654 additions and 64 deletions
Download Patch File Download Diff File Expand all files Collapse all files
pkg/madmin/examples/profiling.go
+89
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// +build ignore
/*
* Minio Cloud Storage, (C) 2017 Minio, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package main
import (
"io"
"log"
"os"
"time"
"github.com/minio/minio/pkg/madmin"
)
func main() {
// Note: YOUR-ACCESSKEYID, YOUR-SECRETACCESSKEY are
// dummy values, please replace them with original values.
// Note: YOUR-ACCESSKEYID, YOUR-SECRETACCESSKEY are
// dummy values, please replace them with original values.
// API requests are secure (HTTPS) if secure=true and insecure (HTTPS) otherwise.
// New returns an Minio Admin client object.
madmClnt, err := madmin.New("your-minio.example.com:9000", "YOUR-ACCESSKEYID", "YOUR-SECRETACCESSKEY", true)
if err != nil {
log.Fatalln(err)
}
profiler := madmin.ProfilerCPU
log.Println("Starting " + profiler + " profiling..")
startResults, err := madmClnt.StartProfiling(profiler)
if err != nil {
log.Fatalln(err)
}
for _, result := range startResults {
if !result.Success {
log.Printf("Unable to start profiling on node `%s`, reason = `%s`\n", result.NodeName, result.Error)
continue
}
log.Printf("Profiling successfully started on node `%s`\n", result.NodeName)
}
sleep := time.Duration(10)
time.Sleep(time.Second * sleep)
log.Println("Stopping profiling..")
profilingData, err := madmClnt.DownloadProfilingData()
if err != nil {
log.Fatalln(err)
}
profilingFile, err := os.Create("/tmp/profiling-" + string(profiler) + ".zip")
if err != nil {
log.Fatal(err)
}
if _, err := io.Copy(profilingFile, profilingData); err != nil {
log.Fatal(err)
}
if err := profilingFile.Close(); err != nil {
log.Fatal(err)
}
if err := profilingData.Close(); err != nil {
log.Fatal(err)
}
log.Println("Profiling files " + profilingFile.Name() + " successfully downloaded.")
}