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mobz / elasticsearch-head

A web front end for an elastic search cluster
http://mobz.github.io/elasticsearch-head/
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How to run elasticsearch-head permanently #450

Closed its-ogawa closed 3 years ago

its-ogawa commented 3 years ago

I've cloned git and installed elasticsearch-head.

I've been running it in the background while the terminal is running, but I want to keep it running after I close the terminal.

I ran the following command, but when I close the terminal, I cannot access elasticsearch-head from my browser.

$ nohup npm run start &

Is there any better way to do this?

philipskokoh commented 3 years ago

Running npm run in the background should work, for example like the one mentioned here: https://medium.com/idomongodb/how-to-npm-run-start-at-the-background-%EF%B8%8F-64ddda7c1f1

Any error message?

its-ogawa commented 3 years ago

Thank you for your advice.

I do not see any error messages.

When I run the command, it appears to work.

There is also just the following in nohup.out.

$ cat nohup.out

> elasticsearch-head@0.0.0 start /usr/local/elastic/elasticsearch-head
> grunt server

Running "connect:server" (connect) task
Waiting forever...
Started connect web server on http://localhost:9100

However, it loses its effect when you close the terminal. If you access elasticsearch-head from a browser, you will see ERR_CONNECTION_REFUSED.

Does elasticsearch-head not support the nohup command?

Should I get PM2 as the URL says?

its-ogawa commented 3 years ago

I tried to install pm2, but it didn't work.

wanted {"os": "darwin", "arch": "any"} (current: {"os": "linux", "arch": "x64"})

It looks like it has to be darwin, but I'm using centos7.

Is there any other better way?

its-ogawa commented 3 years ago

@philipskokoh Do you have any better ideas?

its-ogawa commented 3 years ago

I'll leave a note of the error I got when I installed pm2 just in case.

$ npm install pm2 -g
npm WARN deprecated uuid@3.4.0: Please upgrade  to version 7 or higher.  Older versions may use Math.random() in certain circumstances, which is known to be problematic.  See https://v8.dev/blog/math-random for details.
/usr/bin/pm2 -> /usr/lib/node_modules/pm2/bin/pm2
/usr/bin/pm2-dev -> /usr/lib/node_modules/pm2/bin/pm2-dev
/usr/bin/pm2-docker -> /usr/lib/node_modules/pm2/bin/pm2-docker
/usr/bin/pm2-runtime -> /usr/lib/node_modules/pm2/bin/pm2-runtime
/usr/lib
mqw pm2@5.1.0
  tqw @pm2/agent@2.0.0
  x tqq UNMET PEER DEPENDENCY bufferutil@^4.0.1
  x tqq fast-json-patch@3.0.0-1
  x tqw nssocket@0.6.0
  x x tqq eventemitter2@0.4.14
  x x mqq lazy@1.0.11
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  x x tqq agent-base@6.0.2
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  x x x mqq @tootallnate/once@1.1.2
  x x tqq https-proxy-agent@5.0.0
  x x tqw lru-cache@5.1.1
  x x x mqq yallist@3.1.1
  x x tqw pac-proxy-agent@4.1.0
  x x x tqw get-uri@3.0.2
  x x x x tqq data-uri-to-buffer@3.0.1
  x x x x tqq file-uri-to-path@2.0.0
  x x x x tqw fs-extra@8.1.0
  x x x x x tqq graceful-fs@4.2.6
  x x x x x tqq jsonfile@4.0.0
  x x x x x mqq universalify@0.1.2
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  x x x x   tqw readable-stream@1.1.14
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  x x x x mqq netmask@2.0.2
  x x x mqw raw-body@2.4.1
  x x x   tqq bytes@3.1.0
  x x x   tqw http-errors@1.7.3
  x x x   x tqq depd@1.1.2
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  x tqq UNMET PEER DEPENDENCY utf-8-validate@^5.0.2
  x mqq ws@7.4.6
  tqw @pm2/io@5.0.0
  x tqw @opencensus/core@0.0.9
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  x x x x mqq semver@5.7.1
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  x tqw require-in-the-middle@5.1.0
  x x tqq module-details-from-path@1.0.3
  x x mqw resolve@1.20.0
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  tqw @pm2/js-api@0.6.7
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  x x mqq follow-redirects@1.14.1
  x tqq UNMET PEER DEPENDENCY bufferutil@^4.0.1
  x tqq eventemitter2@6.4.4
  x mqq UNMET PEER DEPENDENCY utf-8-validate@^5.0.2
  tqq @pm2/pm2-version-check@1.0.4
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  tqq blessed@0.1.81
  tqw chalk@3.0.0
  x tqw ansi-styles@4.3.0
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  tqw chokidar@3.5.2
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  x x mqq binary-extensions@2.2.0
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  x mqq tv4@1.3.0
  tqw pm2-multimeter@0.1.2
  x mqq charm@0.1.2
  tqw pm2-sysmonit@1.2.8
  x tqq systeminformation@5.7.7
  x mqw tx2@1.0.4
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  tqw promptly@2.2.0
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  tqw vizion@2.2.1
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  x   mqq pako@0.2.9
  mqw yamljs@0.3.0
    tqw argparse@1.0.10
    x mqq sprintf-js@1.0.3
    mqw glob@7.1.7
      tqq fs.realpath@1.0.0
      tqw inflight@1.0.6
      x mqq wrappy@1.0.2
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      tqw minimatch@3.0.4
      x mqw brace-expansion@1.1.11
      x   tqq balanced-match@1.0.2
      x   mqq concat-map@0.0.1
      tqq once@1.4.0
      mqq path-is-absolute@1.0.1

npm WARN optional SKIPPING OPTIONAL DEPENDENCY: fsevents@~2.3.2 (node_modules/pm2/node_modules/chokidar/node_modules/fsevents):
npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for fsevents@2.3.2: wanted {"os":"darwin","arch":"any"} (current: {"os":"linux","arch":"x64"})
npm WARN ws@7.4.6 requires a peer of bufferutil@^4.0.1 but none was installed.
npm WARN ws@7.4.6 requires a peer of utf-8-validate@^5.0.2 but none was installed.
its-ogawa commented 3 years ago

I created the following Unit definition file and decided to start it with `systemctl

Here is the procedure for your reference.

  1. create a Unit definition file

    $ cat /etc/systemd/system/elasticsearch-head.service
Unit]
Description = elasticsearch-head

Service]
WorkingDirectory=/usr/local/elastic/elasticsearch-head
ExecStart = /usr/bin/npm start
Restart = always
Type = simple

[Install] WantedBy = multi-user.target
WantedBy = multi-user.target

  2. Activate the service

    $ systemctl enable elasticsearch-head

$ systemctl list-unit-files --type=service | grep elasticsearch-head
elasticsearch-head.service enabled

  3. Start the service

    $ systemctl start elasticsearch-head

Have a good ElasticSearch-Head life!

philipskokoh commented 3 years ago

Good that you solve your problem. Sorry, cannot help much on it since I do not encounter the same issue.

its-ogawa commented 3 years ago

@philipskokoh Thank you for commenting.

It may be a very rare case. Still, I hope it can help someone who has faced a similar problem.