firebase-tools: Error: It seems that you are running multiple instances of the emulator suite

[REQUIRED] Environment info

8.2.0 firebase-tools:

Platform: Macos

[REQUIRED] Test case

https://github.com/QuantumInformation/svelte-fullstack-starter

[REQUIRED] Steps to reproduce

Run firebase emulators:start at the root of the above url

[REQUIRED] Expected behavior

emulator to start

[REQUIRED] Actual behavior

the following output

image

debug log:

svelte-fullstack-starter git:(master) firebase emulators:start --debug
[2020-05-09T19:44:10.572Z] > command requires scopes: ["email","openid","https://www.googleapis.com/auth/cloudplatformprojects.readonly","https://www.googleapis.com/auth/firebase","https://www.googleapis.com/auth/cloud-platform"]
[2020-05-09T19:44:10.574Z] > authorizing via signed-in user
i  emulators: Starting emulators: functions, firestore, database, hosting, pubsub
⚠  emulators: It seems that you are running multiple instances of the emulator suite for project svelte-fullstack-starter. This may result in unexpected behavior.
[2020-05-09T19:44:10.593Z] [hub] writing locator at /var/folders/wk/xpjrzzgj0937n2ys2j951wyr0000gn/T/hub-svelte-fullstack-starter.json
✔  hub: emulator hub started at http://localhost:4400
⚠  Your requested "node" version "8" doesn't match your global version "12"
✔  functions: functions emulator started at http://localhost:5002
⚠  firestore: Did not find a Cloud Firestore rules file specified in a firebase.json config file.
⚠  firestore: The emulator will default to allowing all reads and writes. Learn more about this option: https://firebase.google.com/docs/emulator-suite/install_and_configure#security_rules_configuration.
[2020-05-09T19:44:10.875Z] Ignoring unsupported arg: projectId
[2020-05-09T19:44:10.875Z] Ignoring unsupported arg: auto_download
[2020-05-09T19:44:10.875Z] Starting firestore emulator with command {"binary":"java","args":["-Duser.language=en","-jar","/Users/nikos/.cache/firebase/emulators/cloud-firestore-emulator-v1.11.3.jar","--host","localhost","--port",8080,"--functions_emulator","localhost:5002"],"optionalArgs":["port","webchannel_port","host","rules","functions_emulator","seed_from_export"],"joinArgs":false}
i  firestore: firestore emulator logging to firestore-debug.log
[2020-05-09T19:44:11.974Z] API endpoint: http://localhost:
[2020-05-09T19:44:11.974Z] 8080
If you are using a library that supports the FIRESTORE_EMULATOR_HOST environment variable, run:

   export FIRESTORE_EMULATOR_HOST=localhost:8080

Dev App Server is now running.


✔  firestore: firestore emulator started at http://localhost:8080
i  firestore: For testing set FIRESTORE_EMULATOR_HOST=localhost:8080
⚠  database: Did not find a Realtime Database rules file specified in a firebase.json config file.
⚠  database: The emulator will default to allowing all reads and writes. Learn more about this option: https://firebase.google.com/docs/emulator-suite/install_and_configure#security_rules_configuration.
[2020-05-09T19:44:12.158Z] Ignoring unsupported arg: projectId
[2020-05-09T19:44:12.158Z] Ignoring unsupported arg: auto_download
[2020-05-09T19:44:12.158Z] Starting database emulator with command {"binary":"java","args":["-Duser.language=en","-jar","/Users/nikos/.cache/firebase/emulators/firebase-database-emulator-v4.4.1.jar","--host","localhost","--port",9000,"--functions_emulator_host","localhost","--functions_emulator_port",5002],"optionalArgs":["port","host","functions_emulator_port","functions_emulator_host"],"joinArgs":false}
i  database: database emulator logging to database-debug.log
[2020-05-09T19:44:13.695Z] 21:44:13.694 [NamespaceSystem-akka.actor.default-dispatcher-5] INFO akka.event.slf4j.Slf4jLogger - Slf4jLogger started

[2020-05-09T19:44:13.874Z] 21:44:13.873 [main] INFO com.firebase.server.forge.App$ - Listening at localhost:9000

✔  database: database emulator started at http://localhost:9000
i  database: For testing set FIREBASE_DATABASE_EMULATOR_HOST=localhost:9000
[2020-05-09T19:44:13.950Z] > refreshing access token with scopes: ["email","https://www.googleapis.com/auth/cloud-platform","https://www.googleapis.com/auth/cloudplatformprojects.readonly","https://www.googleapis.com/auth/firebase","openid"]
[2020-05-09T19:44:13.950Z] >>> HTTP REQUEST POST https://www.googleapis.com/oauth2/v3/token
 <request body omitted>
[2020-05-09T19:44:14.125Z] <<< HTTP RESPONSE 200 {"content-type":"application/json; charset=utf-8","vary":"X-Origin, Referer, Origin,Accept-Encoding","date":"Sat, 09 May 2020 19:44:14 GMT","server":"scaffolding on HTTPServer2","cache-control":"private","x-xss-protection":"0","x-frame-options":"SAMEORIGIN","x-content-type-options":"nosniff","alt-svc":"h3-27=\":443\"; ma=2592000,h3-25=\":443\"; ma=2592000,h3-Q050=\":443\"; ma=2592000,h3-Q049=\":443\"; ma=2592000,h3-Q048=\":443\"; ma=2592000,h3-Q046=\":443\"; ma=2592000,h3-Q043=\":443\"; ma=2592000,quic=\":443\"; ma=2592000; v=\"46,43\"","accept-ranges":"none","transfer-encoding":"chunked"}
[2020-05-09T19:44:14.137Z] >>> HTTP REQUEST GET https://firebase.googleapis.com/v1beta1/projects/svelte-fullstack-starter/webApps/-/config

[2020-05-09T19:44:14.786Z] <<< HTTP RESPONSE 200 {"content-type":"application/json; charset=UTF-8","vary":"X-Origin, Referer, Origin,Accept-Encoding","date":"Sat, 09 May 2020 19:44:14 GMT","server":"ESF","cache-control":"private","x-xss-protection":"0","x-frame-options":"SAMEORIGIN","x-content-type-options":"nosniff","alt-svc":"h3-27=\":443\"; ma=2592000,h3-25=\":443\"; ma=2592000,h3-Q050=\":443\"; ma=2592000,h3-Q049=\":443\"; ma=2592000,h3-Q048=\":443\"; ma=2592000,h3-Q046=\":443\"; ma=2592000,h3-Q043=\":443\"; ma=2592000,quic=\":443\"; ma=2592000; v=\"46,43\"","accept-ranges":"none","transfer-encoding":"chunked"}
i  hosting: Serving hosting files from: public
✔  hosting: Local server: http://localhost:5000
✔  hosting: hosting emulator started at http://localhost:5000
[2020-05-09T19:44:14.811Z] Ignoring unsupported arg: projectId
[2020-05-09T19:44:14.811Z] Ignoring unsupported arg: auto_download
[2020-05-09T19:44:14.811Z] Starting pubsub emulator with command {"binary":"/Users/nikos/.cache/firebase/emulators/pubsub-emulator-0.1.0/pubsub-emulator/bin/cloud-pubsub-emulator","args":["--host=localhost","--port=8085"],"optionalArgs":["port","host"],"joinArgs":true}
i  pubsub: pubsub emulator logging to pubsub-debug.log
[2020-05-09T19:44:14.985Z] This is the Google Pub/Sub fake.

[2020-05-09T19:44:14.986Z] Implementation may be incomplete or differ from the real system.

[2020-05-09T19:44:15.015Z] May 09, 2020 9:44:14 PM com.google.cloud.pubsub.testing.v1.Main main
INFO: IAM integration is disabled. IAM policy methods and ACL checks are not supported

[2020-05-09T19:44:15.547Z] May 09, 2020 9:44:15 PM io.gapi.emulators.netty.NettyUtil applyJava7LongHostnameWorkaround
INFO: Unable to apply Java 7 long hostname workaround.

[2020-05-09T19:44:15.630Z] May 09, 2020 9:44:15 PM com.google.cloud.pubsub.testing.v1.Main main
INFO: Server started, listening on 8085

✔  pubsub: pubsub emulator started at http://localhost:8085
i  functions: Watching "/Users/nikos/WebstormProjects/svelte-fullstack-starter/functions" for Cloud Functions...
[2020-05-09T19:44:15.845Z] [worker-pool] addWorker(~diagnostic~)
[2020-05-09T19:44:15.846Z] [worker-pool] Adding worker with key ~diagnostic~, total=1
[2020-05-09T19:44:15.846Z] [worker-pool] submitWork(triggerId=)
[2020-05-09T19:44:15.847Z] [worker-~diagnostic~-d5e3219e-99af-4c9f-85e3-90482760af04]: Assigning socketPath: /var/folders/wk/xpjrzzgj0937n2ys2j951wyr0000gn/T/fire_emu_31830.sock
[2020-05-09T19:44:15.847Z] [worker-~diagnostic~-d5e3219e-99af-4c9f-85e3-90482760af04]: BUSY
[2020-05-09T19:44:15.991Z] May 09, 2020 9:44:15 PM io.gapi.emulators.grpc.GrpcServer$3 operationComplete
INFO: Adding handler(s) to newly registered Channel.

[2020-05-09T19:44:16.076Z] [runtime-status] [31830] Functions runtime initialized. {"cwd":"/Users/nikos/WebstormProjects/svelte-fullstack-starter/functions","node_version":"12.13.1"}
[2020-05-09T19:44:16.077Z] [runtime-status] [31830] Disabled runtime features: undefined
[2020-05-09T19:44:16.080Z] [runtime-status] [31830] Resolved module firebase-admin {"declared":true,"installed":true,"version":"8.12.1","resolution":"/Users/nikos/WebstormProjects/svelte-fullstack-starter/functions/node_modules/firebase-admin/lib/index.js"}
[2020-05-09T19:44:16.082Z] [runtime-status] [31830] Resolved module firebase-functions {"declared":true,"installed":true,"version":"3.6.1","resolution":"/Users/nikos/WebstormProjects/svelte-fullstack-starter/functions/node_modules/firebase-functions/lib/index.js"}
[2020-05-09T19:44:16.082Z] [runtime-status] [31830] Set PUBSUB_EMULATOR_HOST to localhost:8085
[2020-05-09T19:44:16.085Z] [runtime-status] [31830] Outgoing network have been stubbed. [{"name":"http","status":"mocked"},{"name":"http","status":"mocked"},{"name":"https","status":"mocked"},{"name":"https","status":"mocked"},{"name":"net","status":"mocked"}]
[2020-05-09T19:44:16.133Z] [runtime-status] [31830] Checked functions.config() {"config":{}}
[2020-05-09T19:44:16.133Z] [runtime-status] [31830] Resolved module firebase-functions {"declared":true,"installed":true,"version":"3.6.1","resolution":"/Users/nikos/WebstormProjects/svelte-fullstack-starter/functions/node_modules/firebase-functions/lib/index.js"}
[2020-05-09T19:44:16.134Z] [runtime-status] [31830] Resolved module firebase-admin {"declared":true,"installed":true,"version":"8.12.1","resolution":"/Users/nikos/WebstormProjects/svelte-fullstack-starter/functions/node_modules/firebase-admin/lib/index.js"}
[2020-05-09T19:44:16.134Z] [runtime-status] [31830] Resolved module firebase-functions {"declared":true,"installed":true,"version":"3.6.1","resolution":"/Users/nikos/WebstormProjects/svelte-fullstack-starter/functions/node_modules/firebase-functions/lib/index.js"}
[2020-05-09T19:44:16.134Z] [runtime-status] [31830] firebase-admin has been stubbed. {"adminResolution":{"declared":true,"installed":true,"version":"8.12.1","resolution":"/Users/nikos/WebstormProjects/svelte-fullstack-starter/functions/node_modules/firebase-admin/lib/index.js"}}
[2020-05-09T19:44:16.137Z] [runtime-status] [31830] initializeApp(DEFAULT) {"databaseURL":"https://svelte-fullstack-starter.firebaseio.com","storageBucket":"svelte-fullstack-starter.appspot.com","projectId":"svelte-fullstack-starter"}
✔  functions[listUsers]: http function initialized (http://localhost:5002/svelte-fullstack-starter/us-central1/listUsers).
✔  functions[upsertUsername]: http function initialized (http://localhost:5002/svelte-fullstack-starter/us-central1/upsertUsername).
✔  emulators: All emulators started, it is now safe to connect.
[2020-05-09T19:44:16.139Z] [worker-~diagnostic~-d5e3219e-99af-4c9f-85e3-90482760af04]: IDLE

About this issue

  • Original URL
  • State: open
  • Created 4 years ago
  • Reactions: 9
  • Comments: 47 (10 by maintainers)

Most upvoted comments

@christhompsongoogle a simple pkill -f firebase is working for me on Ubuntu.

+9
laurentpayot on Dec 22, 2022

Hi folks - I’m running into this issue with firebase-tools: 10.7.2, which is how I found this thread. Seems like this was fixed a couple of years ago - is this an issue that has re-emerged?

+8
rlacatus on May 11, 2022

I had this problem too, in having instances of the emulator working even after finishing/shut down (Ctrl + C).

So, I used a script on my package.json with all the ports I use in my firebase.json file, and after the shot down I run the script, I believe it can be a good workaround.

package.json

"scripts": {
...
"stopall": "lsof -t -i:2000 -i:6001 -i:9080 -i:8086 -i:9099 | xargs kill -9",
...
}

firebase.json

 ...
"emulators": {
    "hosting": {
      "port": 2000
    },
    "functions": {
      "port": 6001
    },
    "firestore": {
      "port": 9080
    },
    "pubsub": {
      "port": 8086
    },
    "auth": {
      "port": 9099
    },
    "ui": {
      "enabled": true
    },
  }
...

On the project root:

  • Ctrl + C
  • npm run stopall
+7
AlexBrasileiro on Dec 10, 2020

Couldn’t be there an firebase emulators:stop to kill any running emulators?

Edit: this seems closed but still happens here.

+7
SrBrahma on Oct 5, 2020

Have a fix going here: https://github.com/firebase/firebase-tools/pull/2230

+5
samtstern on May 11, 2020

I had this problem too, in having instances of the emulator working even after finishing/shut down (Ctrl + C).

So, I used a script on my package.json with all the ports I use in my firebase.json file, and after the shot down I run the script, I believe it can be a good workaround.

package.json

"scripts": {
...
"stopall": "lsof -t -i:2000 -i:6001 -i:9080 -i:8086 -i:9099 | xargs kill -9",
...
}

firebase.json

 ...
"emulators": {
    "hosting": {
      "port": 2000
    },
    "functions": {
      "port": 6001
    },
    "firestore": {
      "port": 9080
    },
    "pubsub": {
      "port": 8086
    },
    "auth": {
      "port": 9099
    },
    "ui": {
      "enabled": true
    },
  }
...

On the project root:

  • Ctrl + C
  • npm run stopall

That’s good! I’ve been using sudo pkill node and sometimes java, but this may kill other non related processes.

+4
SrBrahma on Dec 10, 2020

10.1.14 (I think) but after reading through some other threads, I ran the update code from the cli and it fixed the issue. Sorry for not coming back! Thanks for checking in!!

+2
jaredgibb on Feb 8, 2022

@joehan I found that the issue occurs when I run the script using turbo from the root of my turborepo and the emulator is not able to shut down correctly when I do ctrl+c, but if I use pnpm or run It from the subworkspace it works and shuts down correctly.

+1
Ferezoz on Feb 14, 2024

Any update on this? I am having the issue on 13.2.1, neither pids=$(ps aux | grep '[p]ubsub' | awk '{print $2}'); if [ ! -z "$pids" ]; then kill $pids; fi; nor pkill -f firebase worked for me, it still shows ⚠ emulators: It seems that you are running multiple instances of the emulator suite for project hello-world. This may result in unexpected behavior..

+1
Ferezoz on Feb 8, 2024

Yeah, I’ll start a new issue. To be clear, the

⚠ emulators: It seems that you are running multiple instances of the emulator suite for project firestripe-boilerplate. This may result in unexpected behavior.

still comes up every time afterwards, just not the first time firestore emulators:start is run after changing the port in the firebase.json, or after initiating a new project.

+1
Elijer on May 29, 2020

@samstern thanks for the quick reply. So I think I’m missing something about npm: when I do npm install -g firebase-tools I get +firebase-tools@8.4.1 but when I print npm firebase-tools -v I get 6.14.4. Sorry I know this isn’t how the issues should be used.

I don’t think I’m running multiple copies of the emulator, but I might also be missing something there. I don’t have any other terminals open that are running any processes. Is there any other way I could have other copies of the emulator running?

How do I find the sentinel file to delete it?

+1
Elijer on May 29, 2020

I restarted my system and this error went away, close ticket?

+1
quantuminformation on May 11, 2020

Same on Linux with firebase-tools:8.2.0

Start/Stop all emulators command shows warning after repeated use.

If I run firebase emulators:start for the first time I see normal expected output:

╰─$ firebase emulators:start                                                                         1 ↵
i  emulators: Starting emulators: functions, firestore, database, hosting, pubsub
✔  hub: emulator hub started at http://localhost:4400
✔  functions: functions emulator started at http://localhost:5001
<...>

But then I press CTRL+C seems that some resources are not cleaned-up (no msg about stopping emulators)

If I try to run firebase emulators:start for the 2nd time I see output with warning:

╰─$ firebase emulators:start                                                                       130 ↵
i  emulators: Starting emulators: functions, firestore, database, hosting, pubsub
⚠  emulators: It seems that you are running multiple instances of the emulator suite for project my-project. This may result in unexpected behavior.
✔  hub: emulator hub started at http://localhost:4400
✔  functions: functions emulator started at http://localhost:5001
<...>

Start/Stop --only emulators command works as expected after repeated use.

I start command firebase emulators:start --only functions,firestore,database

╰─$ firebase emulators:start --only functions,firestore,database                                     1 ↵
i  emulators: Starting emulators: functions, firestore, database
✔  hub: emulator hub started at http://localhost:4400
✔  functions: functions emulator started at http://localhost:5001
<...>

Then I press CTRL+C I see printed out message about emulators being stopped

i  emulators: Shutting down emulators.
i  hub: Stopping emulator hub
i  functions: Stopping functions emulator
i  firestore: Stopping firestore emulator
i  database: Stopping database emulator

I can repeat this as many times, and never see It seems that you are running multiple instances<...> warning

Maybe only one type of emulator is not being stopped which is not in my --only functions,firestore,database list. I haven’t tested this much. But maybe this help to find root cause.

+1
audkar on May 11, 2020
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