Error setting Coturn Server on Google Compute Cloud VM instance - gcloud

Question

I am trying to setup the coturn server on a google compute cloud VM instance running ubuntu 14.04. I think this is a firewall issue but I have opened the port tcp:3478 and udp:3478 in the firewall settings. No other process is running on the 3478 port. Anyone tried setting this on gcloud?
What am I doing wrong.
$ sudo turnserver -a -v -n -r north.gov -L 35.189.173.237
0: log file opened: /var/log/turn_2564_2017-07-06.log
0:
RFC 3489/5389/5766/5780/6062/6156 STUN/TURN Server
Version Coturn-4.5.0.6 'dan Eider'
0:
Max number of open files/sockets allowed for this process: 65536
0:
Due to the open files/sockets limitation,
max supported number of TURN Sessions possible is: 32500 (approximately)
0:
==== Show him the instruments, Practical Frost: ====
0: TLS supported
0: DTLS supported
0: DTLS 1.2 supported
0: TURN/STUN ALPN supported
0: Third-party authorization (oAuth) supported
0: GCM (AEAD) supported
0: OpenSSL compile-time version: OpenSSL 1.0.2g 1 Mar 2016 (0x1000207f)
0:
0: SQLite supported, default database location is /usr/local/var/db/turndb
0: Redis is not supported
0: PostgreSQL is not supported
0: MySQL is not supported
0: MongoDB is not supported
0:
0: Default Net Engine version: 3 (UDP thread per CPU core)
=====================================================
0: Listener address to use: 35.189.173.237
0: Domain name:
0: Default realm: north.gov
0: WARNING: cannot find certificate file: turn_server_cert.pem (1)
0: WARNING: cannot start TLS and DTLS listeners because certificate file is not set properly
0: WARNING: cannot find private key file: turn_server_pkey.pem (1)
0: WARNING: cannot start TLS and DTLS listeners because private key file is not set properly
0: Relay address to use: 35.189.173.237
0: pid file created: /var/run/turnserver.pid
0: IO method (main listener thread): epoll (with changelist)
0: WARNING: I cannot support STUN CHANGE_REQUEST functionality because only one IP address is provided
0: Wait for relay ports initialization...
0: relay 35.189.173.237 initialization...
0: relay 35.189.173.237 initialization done
0: Relay ports initialization done
0: IO method (general relay thread): epoll (with changelist)
0: turn server id=1 created
bind: Cannot assign requested address
0: IO method (general relay thread): epoll (with changelist)
0: turn server id=0 created
bind: Cannot assign requested address
bind: Cannot assign requested address
0: Trying to bind fd 16 to <35.189.173.237:3478>: errno=99
Cannot bind local socket to addr: Cannot assign requested address
0: Trying to bind fd 20 to <35.189.173.237:3478>: errno=99
Cannot bind local socket to addr: Cannot assign requested address
0: Cannot bind DTLS/UDP listener socket to addr 35.189.173.237:3478
0: Trying to bind DTLS/UDP listener socket to addr 35.189.173.237:3478, again...
0: Cannot bind TLS/TCP listener socket to addr 35.189.173.237:3478
0: Trying to bind TLS/TCP listener socket to addr 35.189.173.237:3478, again...
0: Trying to bind fd 18 to <35.189.173.237:3478>: errno=99
Cannot bind local socket to addr: Cannot assign requested address
0: Cannot bind TLS/TCP listener socket to addr 35.189.173.237:3478
0: Trying to bind TLS/TCP listener socket to addr 35.189.173.237:3478, again...
bind: Cannot assign requested address
0: Trying to bind fd 20 to <35.189.173.237:3478>: errno=99
Cannot bind local socket to addr: Cannot assign requested address
0: Cannot bind DTLS/UDP listener socket to addr 35.189.173.237:3478
0: Trying to bind DTLS/UDP listener socket to addr 35.189.173.237:3478, again...
bind: Cannot assign requested address
0: Trying to bind fd 16 to <35.189.173.237:3478>: errno=99
bind: Cannot assign requested address
0: Trying to bind fd 18 to <35.189.173.237:3478>: errno=99
Cannot bind local socket to addr: Cannot assign requested address
Cannot bind local socket to addr: Cannot assign requested address
0: Cannot bind TLS/TCP listener socket to addr 35.189.173.237:3478
0: Trying to bind TLS/TCP listener socket to addr 35.189.173.237:3478, again...
0: Cannot bind TLS/TCP listener socket to addr 35.189.173.237:3478
0: Trying to bind TLS/TCP listener socket to addr 35.189.173.237:3478, again...
bind: Cannot assign requested address
0: Trying to bind fd 20 to <35.189.173.237:3478>: errno=99
Cannot bind local socket to addr: Cannot assign requested address
0: Cannot bind DTLS/UDP listener socket to addr 35.189.173.237:3478
0: Trying to bind DTLS/UDP listener socket to addr 35.189.173.237:3478, again...
bind: Cannot assign requested address
bind: Cannot assign requested address

Answer 1

I figured out I was using a wrong command to start the turnserver. If anyone is facing problems setting up a a coturn server on AmazaonEC2/GCloud, this really helped me a lot: https://blog.knoldus.com/2013/10/24/configure-turn-server-for-webrtc-on-amazon-ec2/