Why Che server is unable to ping your workspace?

Question

I have install Eclipse Che on my Ubuntu 16.04 and I m connecting from a remote computer to my eclipse che with an external IP. I have opened port 8000,8080,9500,9000 on my ubuntu firewall.

I changed my ports to avoid tomcat conflict and ip to be able to redirect the ip

docker run -it --rm -p 9000:9500 -e CHE_PORT=9500 -v /var/run/docker.sock:/var/run/docker.sock -v ~/EclipseChe:/data -e CHE_HOST=192.168.1.32 eclipse/che start

INFO: (che start): Preflight checks
WARNING: No swap limit support
mem (1.5 GiB): [OK]
disk (100 MB): [OK]
port 9500 (http): [AVAILABLE]
conn (browser => ws): [OK]
conn (server => ws): [OK]


INFO: (che start): Starting containers...
INFO: (che start): Services booting...
INFO: (che start): Server logs at "docker logs -f che-9500"
^CERROR: (che start): Timeout waiting for server. Run "docker logs che-9500" to inspect.

I can launch che, but when I create a blank workspace I have this error

Could not start workspace wksp-onaa. Reason: Start of environment
'default' failed. Error: Timeout. The Che server is unable to ping
your workspace. This implies a network configuration issue, workspace
boot failure, or an unusually slow workspace boot.

I have tried to:

• disable firewall using sudo ufw disable

• change the times max che.workspace.agent.dev.max_start_time_ms=600000 and che.agent.dev.max_start_time_ms=600000

• run another web application docker run -d -p 32829:80 nginx. curl - v 192.168.1.32:32829 gives me the welcome page

• The info --network gives :
  INFO: (che cli): 5.17.0 - using docker 17.07.0-ce / native
  WARN: (che cli): 'CHE_HOST=192.168.1.32' from command line overriding
  'CHE_HOST=172.17.0.1' from che.env
  INFO:
  INFO: ---------------------------------------
  INFO: -------- CONNECTIVITY TEST --------
  INFO: ---------------------------------------
  INFO: (che network): eclipse/che-ip:5.17.0: 192.168.1.32 INFO: (che network): Browser => Workspace Agent (localhost): Connection failed
  INFO: (che network): Browser => Workspace Agent (192.168.1.32): Connection
  succeeded
  INFO: (che network): Server => Workspace Agent (External IP): Connection
  succeeded
  INFO: (che network): Server => Workspace Agent (Internal IP): Connection
  succeeded
  

When I run a worspace, here is the log :
che_unable_ping_workspace
INFO: ---------------------------------------
INFO: --------- LAUNCHER INFO ------------
INFO: ---------------------------------------
INFO:
INFO: --------- PLATFORM INFO -------------
INFO: DOCKER_INSTALL_TYPE = native
WARNING: No swap limit support

INFO: DOCKER_HOST_OS = Ubuntu 16.04.3 LTS
INFO: DOCKER_HOST_IP = 172.17.0.1
INFO: DOCKER_HOST_EXTERNAL_IP = not set
INFO: DOCKER_DAEMON_VERSION = 17.07.0-ce
INFO:
INFO:
INFO: --------- CHE INSTANCE LIST ----------
INFO: ---- CURRENT COMMAND LINE OPTIONS ---
INFO: CHE_VERSION = nightly
INFO: CHE_DATA = /home/user/che
INFO: CHE_CONF = not set
INFO: CHE_ASSEMBLY = not set
INFO: CHE_PORT = 8080
INFO: CHE_HOST_IP = 172.17.0.1
INFO: CHE_RESTART_POLICY = no
INFO: CHE_USER = root
INFO: CHE_LOG_LEVEL = info
INFO: CHE_DEBUG_SERVER = false
INFO: CHE_DEBUG_SERVER_PORT = 8000
INFO: CHE_HOSTNAME = localhost
INFO: CHE_SERVER_CONTAINER_NAME = che-server
INFO: CHE_SERVER_IMAGE_NAME = codenvy/che-server

Che Diagnostic :
Websockets
No reply of websocket test after 5 seconds. Websocket is failing to connect to ws://17x.xxx.xxx.xx:9000/api/ws
Che try to connect from my external IP adress???

Test connection from browser to workspace agent by using Workspace Agent IP Unable to perform call on http://192.168.1.32:32771/api: Status -1,
statusText:/null
Please, I need help

OS and version:
Ubuntu 16.04 LTS (not a VM)

Answer 1

You need to open the ephemeral port range too since workspace agent ports are chosen from that range.