Trying to run Firebase Emulators with the command firebase emulators:start I'm not able to start it. Checking the logs I see this.

firebase-debug.log

[debug] [2022-10-13T17:03:11.665Z] ----------------------------------------------------------------------
[debug] [2022-10-13T17:03:11.667Z] Command:       /usr/local/bin/node /usr/local/share/npm-global/bin/firebase emulators:exec --project=demo-project --ui ng serve
[debug] [2022-10-13T17:03:11.667Z] CLI Version:   11.14.2
[debug] [2022-10-13T17:03:11.667Z] Platform:      linux
[debug] [2022-10-13T17:03:11.667Z] Node Version:  v16.17.1
[debug] [2022-10-13T17:03:11.673Z] Time:          Thu Oct 13 2022 17:03:11 GMT 0000 (Coordinated Universal Time)
[debug] [2022-10-13T17:03:11.674Z] ----------------------------------------------------------------------
[debug] 
[debug] [2022-10-13T17:03:11.760Z] > 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"]
[debug] [2022-10-13T17:03:12.144Z] openjdk version "11.0.16" 2022-07-19
[debug] [2022-10-13T17:03:12.145Z] 
OpenJDK Runtime Environment (build 11.0.16 8-post-Debian-1deb11u1)
OpenJDK 64-Bit Server VM (build 11.0.16 8-post-Debian-1deb11u1, mixed mode, sharing)

[debug] [2022-10-13T17:03:12.149Z] Parsed Java major version: 11
[info] i  emulators: Starting emulators: auth, functions, firestore, hosting {"metadata":{"emulator":{"name":"hub"},"message":"Starting emulators: auth, functions, firestore, hosting"}}
[info] i  emulators: Detected demo project ID "demo-project", emulated services will use a demo configuration and attempts to access non-emulated services for this project will fail. {"metadata":{"emulator":{"name":"hub"},"message":"Detected demo project ID \"demo-project\", emulated services will use a demo configuration and attempts to access non-emulated services for this project will fail."}}
[info] i  emulators: Shutting down emulators. {"metadata":{"emulator":{"name":"hub"},"message":"Shutting down emulators."}}
[debug] [2022-10-13T17:03:12.160Z] Error: listen EADDRNOTAVAIL: address not available ::1:4400
    at Server.setupListenHandle [as _listen2] (node:net:1415:21)
    at listenInCluster (node:net:1480:12)
    at doListen (node:net:1629:7)
    at processTicksAndRejections (node:internal/process/task_queues:84:21)
[error] 
[error] Error: An unexpected error has occurred.

My project is in a docker container and if I run ifconfig this is what I'm getting

eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
    inet 172.17.0.2  netmask 255.255.0.0  broadcast 172.17.255.255
    ether 02:42:ac:11:00:02  txqueuelen 0  (Ethernet)
    RX packets 251  bytes 123951 (121.0 KiB)
    RX errors 0  dropped 0  overruns 0  frame 0
    TX packets 238  bytes 36631 (35.7 KiB)
    TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
    inet 127.0.0.1  netmask 255.0.0.0
    loop  txqueuelen 1000  (Local Loopback)
    RX packets 7924  bytes 28381616 (27.0 MiB)
    RX errors 0  dropped 0  overruns 0  frame 0
    TX packets 7924  bytes 28381616 (27.0 MiB)
    TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

I've tried to force the host within firebase.json like this (also with 0.0.0.0), without luck.

"emulators": {
"auth": {
  "port": 9099,
  "host": "127.0.0.1"
},
"functions": {
  "port": 5001,
  "host": "127.0.0.1"
},
"firestore": {
  "port": 8080,
  "host": "127.0.0.1"
},
"hosting": {
  "port": 5000,
  "host": "127.0.0.1"
},
"ui": {
  "enabled": true,
  "host": "127.0.0.1"
},
"singleProjectMode": true
}

Can you help me with this issue, please?

CodePudding user response：

The project is in a docker container, for some weird reason, destroying the container and building it again, worked. However, I'm interested in knowing more about what could happen so if anyone has some clues I will be glad to read more.

CodePudding user response：

Finally!!!

After checking this Github Issue it seems that the best way to deal with this problem is to set the ip and port inside firebase.json.

"auth": {
      "port": 9099,
      "host": "0.0.0.0"
    },
    "functions": {
      "port": 5001,
      "host": "0.0.0.0"
    },
    "firestore": {
      "port": 8080,
      "host": "0.0.0.0"
    },
    "hosting": {
      "port": 5000,
      "host": "0.0.0.0"
    },
    "hub": {
      "host": "0.0.0.0",
      "port": 4400
    },
    "logging": {
      "host": "0.0.0.0",
      "port": 4500
    },
    "eventarc": {
      "host": "0.0.0.0",
      "port": 9299
    },
    "ui": {
      "enabled": true,
      "port": 4000,
      "host": "0.0.0.0"
    },