Client has aborted connection. Response writing omitted.

[YanngLiu]

I downloaded Che source code and built it in a Ubuntu machine (not VM).
Then I started the server using following command:
docker run -v /var/run/docker.sock:/var/run/docker.sock -e CHE_LOCAL_BINARY=/home/yang/che/assembly/assembly-main/target/eclipse-che-5.9.0-SNAPSHOT/eclipse-che-5.9.0-SNAPSHOT codenvy/che-launcher:nightly start
I open the url http://10.99.24.179:8080/dashboard in firefox on another machine which is in the same internal network, and try to create a simple hello world Java project in the workspace, the error message appears.

Reproduction Steps:

1. Run Che server using local assembly
2. Connect to server in firefox
3. Create a project in a workspace

OS and version:
Linux yang-OptiPlex-960 4.8.0-36-generic #36~16.04.1-Ubuntu SMP Sun Feb 5 09:39:57 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux

Diagnostics:
yang@yang-OptiPlex-960:~$ docker run -v /var/run/docker.sock:/var/run/docker.sock eclipse/che info
WARN: Bound 'eclipse/che' to 'eclipse/che:5.8.1'
WARNING: No swap limit support
WARN: Did not detect TTY - interactive mode disabled
INFO: Welcome to Eclipse Che!
INFO:
INFO: We could not detect a location to save data.
INFO: Volume mount a local directory to ':/data'.
INFO:
INFO: Simplest syntax:
INFO: docker run -it --rm -v /var/run/docker.sock:/var/run/docker.sock
INFO: -v <YOUR_LOCAL_PATH>:/data
INFO: eclipse/che info
INFO:
INFO:
INFO: Or, run with additional overrides:
INFO: docker run -it --rm -v /var/run/docker.sock:/var/run/docker.sock
INFO: -v <YOUR_LOCAL_PATH>:/data
INFO: -v <YOUR_INSTANCE_PATH>:/data/instance
INFO: -v <YOUR_BACKUP_PATH>:/data/backup
INFO: eclipse/che info

[YanngLiu]

After the error messages, there will be a dialog:
Title: Workspace Agent Not Responding
Message body: Our workspace agent is no longer responding. To fix the problem, verify you have a good network connection and restart the workspace.

[YanngLiu]

console messages:
[DOCKER] latest: Pulling from codenvy/ubuntu_jdk8
[DOCKER] Digest: sha256:018f74a9a6f407f10c2815c39fb965f9dea8a1acb0f5cd2de7ef1ec32f133ed5
[DOCKER] Status: Image is up to date for codenvy/ubuntu_jdk8:latest
Listening for transport dt_socket at address: 4403
2017-05-31 15:45:16,918[main] [INFO ] [o.a.c.s.VersionLoggerListener 89] - Server version: Apache Tomcat/8.0.38
2017-05-31 15:45:16,936[main] [INFO ] [o.a.c.s.VersionLoggerListener 91] - Server built: Oct 6 2016 20:51:55 UTC
2017-05-31 15:45:16,937[main] [INFO ] [o.a.c.s.VersionLoggerListener 93] - Server number: 8.0.38.0
2017-05-31 15:45:16,938[main] [INFO ] [o.a.c.s.VersionLoggerListener 95] - OS Name: Linux
2017-05-31 15:45:16,938[main] [INFO ] [o.a.c.s.VersionLoggerListener 97] - OS Version: 4.8.0-36-generic
2017-05-31 15:45:16,938[main] [INFO ] [o.a.c.s.VersionLoggerListener 99] - Architecture: amd64
2017-05-31 15:45:16,939[main] [INFO ] [o.a.c.s.VersionLoggerListener 101] - Java Home: /opt/jdk1.8.0_45/jre
2017-05-31 15:45:16,939[main] [INFO ] [o.a.c.s.VersionLoggerListener 103] - JVM Version: 1.8.0_45-b14
2017-05-31 15:45:16,939[main] [INFO ] [o.a.c.s.VersionLoggerListener 105] - JVM Vendor: Oracle Corporation
2017-05-31 15:45:16,940[main] [INFO ] [o.a.c.s.VersionLoggerListener 107] - CATALINA_BASE: /home/user/che/ws-agent
2017-05-31 15:45:16,940[main] [INFO ] [o.a.c.s.VersionLoggerListener 109] - CATALINA_HOME: /home/user/che/ws-agent
2017-05-31 15:45:16,944[main] [INFO ] [o.a.c.s.VersionLoggerListener 115] - Command line argument: -Djava.util.logging.config.file=/home/user/che/ws-agent/conf/logging.properties
2017-05-31 15:45:16,945[main] [INFO ] [o.a.c.s.VersionLoggerListener 115] - Command line argument: -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager
2017-05-31 15:45:16,948[main] [INFO ] [o.a.c.s.VersionLoggerListener 115] - Command line argument: -Xms256m
2017-05-31 15:45:16,949[main] [INFO ] [o.a.c.s.VersionLoggerListener 115] - Command line argument: -Xmx2048m
2017-05-31 15:45:16,950[main] [INFO ] [o.a.c.s.VersionLoggerListener 115] - Command line argument: -Djava.security.egd=file:/dev/./urandom
2017-05-31 15:45:16,951[main] [INFO ] [o.a.c.s.VersionLoggerListener 115] - Command line argument: -Dche.logs.dir=/home/user/che/ws-agent/logs
2017-05-31 15:45:16,952[main] [INFO ] [o.a.c.s.VersionLoggerListener 115] - Command line argument: -Djdk.tls.ephemeralDHKeySize=2048
2017-05-31 15:45:16,953[main] [INFO ] [o.a.c.s.VersionLoggerListener 115] - Command line argument: -Djava.protocol.handler.pkgs=org.apache.catalina.webresources
2017-05-31 15:45:16,953[main] [INFO ] [o.a.c.s.VersionLoggerListener 115] - Command line argument: -agentlib:jdwp=transport=dt_socket,address=4403,server=y,suspend=n
2017-05-31 15:45:16,953[main] [INFO ] [o.a.c.s.VersionLoggerListener 115] - Command line argument: -Dcom.sun.management.jmxremote
2017-05-31 15:45:16,953[main] [INFO ] [o.a.c.s.VersionLoggerListener 115] - Command line argument: -Dcom.sun.management.jmxremote.ssl=false
2017-05-31 15:45:16,954[main] [INFO ] [o.a.c.s.VersionLoggerListener 115] - Command line argument: -Dcom.sun.management.jmxremote.authenticate=false
2017-05-31 15:45:16,954[main] [INFO ] [o.a.c.s.VersionLoggerListener 115] - Command line argument: -Dche.local.conf.dir=/mnt/che/conf
2017-05-31 15:45:16,954[main] [INFO ] [o.a.c.s.VersionLoggerListener 115] - Command line argument: -Djava.endorsed.dirs=/home/user/che/ws-agent/endorsed
2017-05-31 15:45:16,955[main] [INFO ] [o.a.c.s.VersionLoggerListener 115] - Command line argument: -Dcatalina.base=/home/user/che/ws-agent
2017-05-31 15:45:16,960[main] [INFO ] [o.a.c.s.VersionLoggerListener 115] - Command line argument: -Dcatalina.home=/home/user/che/ws-agent
2017-05-31 15:45:16,960[main] [INFO ] [o.a.c.s.VersionLoggerListener 115] - Command line argument: -Djava.io.tmpdir=/home/user/che/ws-agent/temp
2017-05-31 15:45:17,457[main] [INFO ] [o.a.c.http11.Http11NioProtocol 443] - Initializing ProtocolHandler ["http-nio-4401"]
2017-05-31 15:45:17,490[main] [INFO ] [o.a.t.util.net.NioSelectorPool 72] - Using a shared selector for servlet write/read
2017-05-31 15:45:17,495[main] [INFO ] [o.a.catalina.startup.Catalina 591] - Initialization processed in 960 ms
2017-05-31 15:45:17,602[main] [INFO ] [c.m.JmxRemoteLifecycleListener 332] - The JMX Remote Listener has configured the registry on port 32002 and the server on port 32102 for the Platform server
2017-05-31 15:45:17,611[main] [INFO ] [o.a.c.core.StandardService 435] - Starting service Catalina
2017-05-31 15:45:17,611[main] [INFO ] [o.a.c.core.StandardEngine 259] - Starting Servlet Engine: Apache Tomcat/8.0.38
2017-05-31 15:45:17,684[ost-startStop-1] [INFO ] [o.a.c.startup.HostConfig 911] - Deploying web application archive /home/user/che/ws-agent/webapps/wsagent.war
2017-05-31 15:45:34,269[ost-startStop-1] [INFO ] [.e.c.a.v.i.f.e.LoEventListener 48] - Subscribing to event service: class org.eclipse.che.api.vfs.impl.file.event.LoEventListener
2017-05-31 15:45:34,319[ost-startStop-1] [INFO ] [.e.c.a.v.i.f.e.VfsEventService 55] - Starting virtual file system event service: LoEventService
2017-05-31 15:45:34,322[ost-startStop-1] [INFO ] [.e.c.a.v.i.f.e.VfsEventService 55] - Starting virtual file system event service: HiEventService
2017-05-31 15:45:34,711[rest.WSClient-0] [INFO ] [.c.a.c.n.WSocketEventBusClient 223] - Open connection to ws://che-host:8080/wsmaster/api/eventbus/?token=dummy_token.
2017-05-31 15:45:37,487[s polled Thread] [INFO ] [o.e.c.p.m.server.rmi.RmiClient 130] - Port/Name:39908/MavenRemoteServerImpledf343ed

Wed May 31 15:45:40 UTC 2017 - [localhost-startStop-1] Product-specified preferences called before plugin is started
2017-05-31 15:45:41,903[ost-startStop-1] [INFO ] [o.a.c.startup.HostConfig 975] - Deployment of web application archive /home/user/che/ws-agent/webapps/wsagent.war has finished in 24,217 ms
2017-05-31 15:45:41,924[ost-startStop-1] [INFO ] [o.a.c.startup.HostConfig 1031] - Deploying web application directory /home/user/che/ws-agent/webapps/ROOT
2017-05-31 15:45:42,172[ost-startStop-1] [INFO ] [o.a.c.startup.HostConfig 1143] - Deployment of web application directory /home/user/che/ws-agent/webapps/ROOT has finished in 248 ms
2017-05-31 15:45:42,210[main] [INFO ] [o.a.c.http11.Http11NioProtocol 488] - Starting ProtocolHandler ["http-nio-4401"]
2017-05-31 15:45:42,236[main] [INFO ] [o.a.catalina.startup.Catalina 642] - Server startup in 24740 ms
2017-05-31 15:45:43,069[nio-4401-exec-7] [WARN ] [o.e.c.impl.ContainerResponse 93] - Client has aborted connection. Response writing omitted.
2017-05-31 15:45:43,072[nio-4401-exec-6] [WARN ] [o.e.c.impl.ContainerResponse 93] - Client has aborted connection. Response writing omitted.
2017-05-31 15:45:43,073[nio-4401-exec-5] [WARN ] [o.e.c.impl.ContainerResponse 93] - Client has aborted connection. Response writing omitted.
2017-05-31 15:45:43,072[nio-4401-exec-1] [WARN ] [o.e.c.impl.ContainerResponse 93] - Client has aborted connection. Response writing omitted.
2017-05-31 15:45:43,075[nio-4401-exec-4] [WARN ] [o.e.c.impl.ContainerResponse 93] - Client has aborted connection. Response writing omitted.
2017-05-31 15:45:43,075[nio-4401-exec-2] [WARN ] [o.e.c.impl.ContainerResponse 93] - Client has aborted connection. Response writing omitted.

[ghost]

@YanngLiu you may want to try running it with -e "CHE_HOST=10.99.24.179"

[YanngLiu]

Thanks @eivantsov . I tried this option but no luck.
The same error messages appear.
docker run -e "CHE_HOST=10.99.24.179" -v /var/run/docker.sock:/var/run/docker.sock -e CHE_LOCAL_BINARY=/home/yang/che/assembly/assembly-main/target/eclipse-che-5.9.0-SNAPSHOT/eclipse-che-5.9.0-SNAPSHOT codenvy/che-launcher:nightly start

[ghost]

@YanngLiu che-launcher is deprecated. use eclipse/che

[YanngLiu]

Thanks @eivantsov . Things look moving forward.
Now Che complains We could not resolve DockerHub using DNS.

The content of file /etc/network/interfaces:
# interfaces(5) file used by ifup(8) and ifdown(8)
auto lo
iface lo inet loopback
dns-nameservers 8.8.8.8

[ghost]

@YanngLiu are you behind a proxy?

You may add --fast to your docker run syntax.

[YanngLiu]

I'm not sure, but I think so. The machine is within company.
There is result for env | grep -i proxy

Looks there is no --fast option for docker run, as there is an error:
yang@yang-OptiPlex-960:~$ docker run --fast -e "CHE_HOST=10.99.24.179" -v /var/run/docker.sock:/var/run/docker.sock -v /tmp/che:/data -e CHE_LOCAL_BINARY=/home/yang/che/assembly/assembly-main/target/eclipse-che-5.9.0-SNAPSHOT/eclipse-che-5.9.0-SNAPSHOT eclipse/che:nightly start
unknown flag: --fast

[ghost]

append --fast after start

[YanngLiu]

Thanks @eivantsov . Things look move forward!
What's the meaning of --fast? I cannot find it in docker run --help

There is another error message in a dialog when I try to create a Java project in the workspace:
Error while creating the project
: https://github.com/che-samples/console-java-simple.git: cannot open git-upload-pack

[ghost]

@YanngLiu --fast is Che CLI argument, not Docker's.

https://github.com/che-samples/console-java-simple.git: cannot open git-upload-pack

You must be behind the proxy. Make sure you configure proxy both for master and ws-agent: https://www.eclipse.org/che/docs/setup/getting-started/index.html#proxy-installation

[YanngLiu]

Thanks!
But I get the same error message even if I try to create project in the same machine which run Che server. And I can run git clone https://github.com/che-samples/console-java-simple.git in my Ubuntu command shell successfully.

[ghost]

@YanngLiu please share your che.env file, namely envs for proxies. Have you set proxy for Codenvy workspaces?

[YanngLiu]

@eivantsov Thanks for the response. I didn't set proxy as I didn't get the info from my IT guys.
That file contains two lines:
CHE_HOST=10.99.24.179
CHE_DOCKER_IP_EXTERNAL=10.99.24.179

[ghost]

@YanngLiu you need this info, otherwise workspace agent will have limited connectivity.

[YanngLiu]

@eivantsov Got it, I'll try to find what's the proxy. Thanks!

[ghost]

@YanngLiu closing due to inactivity. Feel free to reopen if configuring proxy in che.env does not fix it.

[YanngLiu]

After I added correct DNS server in file /etc/docker/daemon.json, things can work.
Thanks!