The following sections contain workarounds for issues that you might encounter when using Codewind. If you don’t see your issue here, please check our GitHub repository. If you still don’t see your issue, you can open a new issue in the repository.

IDE Troubleshooting

The following sections contain workarounds for issues that you might encounter when using Codewind in a particular IDE.

Installing Codewind

Installer fails with mount issues on Windows

If you try to install Codewind on Windows 10 and use Docker, you might see the following error:

ERROR: for codewind-performance  Cannot start service codewind-performance: b"error while creating mount source path '/host_mnt/c/codewind-data': mkdir /host_mnt/c: file exists"

ERROR: for codewind-performance  Cannot start service codewind-performance: b"error while creating mount source path '/host_mnt/c/codewind-data': mkdir /host_mnt/c: file exists"
Encountered errors while bringing up the project.

Workaround: Enter the following command and install again:

  1. Enter the docker volume rm -f /host_mnt/c command.
  2. Restart Docker and run the installer again.

If the command and another installation attempt don’t succeed, complete the following steps instead:

  1. Uninstall Codewind and remove all the images with the docker system prune -a command.
  2. From the Docker settings dialog box, reset Docker to the factory default to resolve the mount issues.

For more information, see this issue about Docker mounts on Windows.

Docker Shared Drive not accepting OS credentials for Windows

When using OS authentication setups (for example, AzureAD), Docker Shared Drive might not accept your OS credentials.

Workaround: Create a new user account.

  1. Navigate to Settings -> Accounts -> Family & other people -> Add someone else to this PC -> I don’t have this person’s sign-in information -> Add a user without a Microsoft account.
  2. Create the new account with the same username but without the prefix (for example, if your AzureAD account is AzureAD/BobSmith, your new local account should be BobSmith). Use the same password as your other account.
  3. Select your new local account and click Change account type. Select the dropdown menu and select Administrator. Share the drive again in Docker.

Error appears after installing or updating Codewind

After you install or update Codewind, an error might appear when you try to start Codewind.

Workaround: Remove the Codewind Docker images with your IDE:

  1. Stop Codewind.
  2. Remove the Codewind Docker images.
    • In VS Code, use the Remove Codewind Images command.
    • In Eclipse, use the Uninstall action.

If removing the images with the IDE fails, remove them with the Docker command line instead:

  1. Stop Codewind.
  2. Use docker image ls to identify the Codewind images.
  3. Then, enter docker image rm to remove them.

If installing and starting Codewind still fails, you can use Docker system prune:
Caution: Docker system prune removes more than just the Codewind Docker images. It can potentially remove all of your images.

  1. Stop Codewind.
  2. Enter the docker system prune -a command.
  3. Carefully review the list of items that Docker system prune removes. Preserve any items that you want to keep.
    • To preserve containers, start all the containers that you want to save.
    • To preserve images, start a container from the images that you want to save.
  4. After you ensure the preservation of any necessary items that Docker system prune removes, enter y to continue.

Without a keychain or keyring, Codewind fails to run certain commands

Local and remote Codewind need to use a keychain, also called a keyring, when certain commands are used. The following error messages appear on Linux:

  • dbus: invalid bus address (invalid or unsupported transport)
  • The name org.freedesktop.secrets was not provided by any .service files

Workaround: Including compatible keychains Use any keyring compatible with go-keyring, which is what Codewind uses internally. These compatible keychains are included with macOS and Windows 10, and some Linux systems include the gnome-keyring package.

If your Linux computer doesn’t have the gnome-keyring package, you can install GNOME/Keyring.

Enabling insecure keychain mode If you cannot install a keychain, enable insecure keychain mode. If you enable this mode, your credentials are stored in a JSON text file in the .codewind directory in your user home directory. The credentials are base64 encoded, and anyone who has access to that file can decode the credentials.

If you use cwctl directly, use the --insecure-keyring command line argument or set INSECURE_KEYRING=true in the environment. To get the IDE plug-ins to use the insecure keyring, set INSECURE_KEYRING=true in the environment before launching the IDE from that same environment.

Operator install failed to connect to remote Codewind instance

When installing Codewind remotely, you get a Account is not fully set up error message.

Workaround If you have set a temporary password by clicking the Temporary check box to On, log in to Keycloak to set a new one.

For more information, see Add a new user to Keycloak.

Upgrading Codewind

Error upgrading Codewind to the latest

When upgrading Codewind from any version older than 0.9 to the latest, you see the following error:

==> Run cwctl --json remove -t 0.8.1
Removing Codewind docker images..
System architecture is:  amd64
Host operating system is:  darwin
Please wait whilst images are removed...
.FileNotFoundError: [Errno 2] No such file or directory: '/Users/<username>/.codewind/docker-compose.yaml'
{"error":"IMAGE_REMOVE_ERROR","error_description":"exit status 1"}


1. Remove the Codewind images by hand. On macOS or Linux, you can remove the images with the following command: $ docker rmi $(docker images | grep eclipse/codewind | awk '{ print $3 }')

2. Remove the Codewind network: $ docker network rm <codewind_network>

3. Go to your IDE and click Start Local Codewind. Codewind starts.

4. If Codewind fails to start, you can use Docker system prune.
Caution: Docker system prune removes more than just the Codewind Docker images. It can potentially remove all of your images.

  1. Enter the $ docker system prune -a command.
  2. Carefully review the list of items that Docker system prune removes. Preserve any items that you want to keep.
    • To preserve containers, start all the containers that you want to save.
    • To preserve images, start a container from the images that you want to save.
  3. After you ensure the preservation of any necessary items that Docker system prune removes, enter y to continue.

Creating a project

Project creation on macOS fails, and Codewind reports an error

If creating a Codewind project on macOS fails, Codewind might report the net/http: TLS handshake timeout error. For a similar issue, see the report Error “net/http: TLS handshake timeout”.

Workaround: As noted in the report Error “net/http: TLS handshake timeout”, go to Applications>Utilities>Keychain Access and delete from the keychain the certificates that you no longer need. You might notice that some certificates are redundant. Then, restart Codewind.

Project creation fails if a persistent volume (PV) is unavailable

If you try to create a project on Codewind for Eclipse Che, errors might occur if a PV is unavailable for your cluster.

Workaround: Run the kubectl get pv command to check that a PV is available for each project that you want to create.

Codewind unable to deploy projects on IBM Cloud Kubernetes Service (IKS) with Kubernetes 1.15 and earlier

Codewind cannot deploy Codewind style projects with remote Codewind on IKS and Kubernetes 1.15 and earlier. The projects fail to deploy, and you see the following error:

Failed to pull image "<image>": rpc error: code = Unknown desc = failed to pull and unpack image "<image>": failed to unpack image on snapshotter overlayfs: failed to extract layer sha256:<hash>: mount callback failed on /var/lib/containerd/tmpmounts/containerd-mount799987480: archive/tar: invalid tar header: unknown

Workaround: Upgrade to the latest version of IKS. IKS clusters that run Kubernetes 1.16 and later run a later version of containerd and are not affected by this issue.

Codewind Che extension loses connectivity to the Codewind pod

The Codewind Che extension might lose connectivity to the Codewind pod during a Lagom or Swift project build if you have multiple projects in the workspace for each runtime type. When this issue occurs, the project tree says Disconnected.

Workaround: Refresh the projects list to have the tree repopulate. If the issue persists, refresh the webpage.

Importing a project

Imported project never builds or starts

To view the status of the imported project, enter the following command:

docker logs codewind-pfe

Workaround: If you see the following messages, the imported project is likely not a valid Codewind project.

build-log requested, no build log found for project <project name>
build-log requested, no build log found for project <project name>
build-log requested, no build log found for project <project name>
build-log requested, no build log found for project <project name>
No containerId for running project <project name>

Adding an existing Open Liberty project fails to build because of missing files

An Open Liberty project fails to build after it is added into Codewind with the Add Existing Project action, and the project fails to build because of missing files.

Workaround: Bind the existing project again but this time for the project type, do not accept the detected type, but instead select Other (Codewind Basic Container).

Understanding Application Metrics

Application Monitoring unavailable after Project Import

After importing an application, when you click App Monitor, the dashboard is not displayed and results in a Cannot GET /appmetrics-dash/ error. If this error appears, the application was not created by Codewind or previously had AppMetrics integration.

Workaround: Enable AppMetrics for your application. You can enable AppMetrics for Node.js, Swift, and SpringBoot projects.

Profiling markers do not appear

If you have the Codewind Language Server for Node.js Profiling extension enabled and have run a load test, profiling markers still might not appear. Ensure that your project and load run conform to the following requirements to use profiling:

  • Your project exists in Theia or VS Code. Profiling is available only in Theia and VS Code.
  • Your project is a Node.js project that was created through Codewind.
  • Your project has Run Load executed on it.
  • The load run successfully completed. Profiling data is written to the load-test/<datestamp>/profiling.json file in your Codewind project only on a successfully completed load run. If the load run was cancelled, it won’t be written to the workspace.
  • The load run ran for a minimum of 45 seconds to gather enough profiling data to generate the profiling.json file.
  • If a function runs quickly, in less than 5 milliseconds with the default configuration, then the function might not run during any of the samples, so it might not be included in the profiling data for that load run.
  • Profiling is not disabled. To enable profiling, access the profiling in one of the following ways:
    • Right-click in the editor and select Toggle Profiling.
    • Open the command palette with cmd+shift+p on a Mac or ctrl+shift+p on Windows. Then, select Codewind: Profiling: Toggle Profiling.
    • Toggle the Codewind Profiling: Show Profiling setting in the extensions settings.

Workaround: Review the preceding list and ensure that your project conforms to all of the items in the list.

Troubleshooting project application and build statuses

Troubleshooting general application status problems

If your application goes into the Stopped state unexpectedly or stays in the Starting state longer than expected, check the project logs to see whether something went wrong. Open the build and application logs from the project’s context menu. Problems with the build or project configuration can cause the application to fail to start. There are usually errors in the log files in this case.

Even without errors, the Stopped state can occur if:

Troubleshooting general build status problems

If your build fails, try the following:

  • Inspect the build logs. Open the build logs from the project’s context menu. In the build logs, you can view error messages that describe the type and cause of failure.
  • If the build failure is related to the image build, then view the docker build log and correct any errors in the project’s Dockerfile.

Projects stuck in starting or stopped state

You might occasionally see projects stuck in the Starting or Stopped state even though the container logs say the projects are up and running. This behavior can occur when you create a number of projects, for example, using the default and Appsody templates with Codewind 0.5.0.

Workaround: Manually rebuild the projects that are stuck in Starting or Stopped state. To do this:

  1. In the Codewind Explorer view, right-click your project and select Build.
  2. Wait for the project state to return to Running or Debugging in the Codewind Explorer view.

Application stuck in Starting state

Some project templates come with no server configured by default, like Appsody Node.js. The application status cannot be determined for these types of projects because Codewind relies on application endpoints for status. Codewind determines the port of the application by inspecting the project’s container information. The container may have a port exposed but since no server is available to ping on that port, the status check times out, and the state is stuck on Starting.

Workaround: The constant state is not inherently a problem; nonetheless, you can disable the status check for the project by taking the following steps:

  1. Edit the .cw-settings file under the application, and set the key internalPort to -1.
    • This forces the project state to Stopped, stops pinging the project’s health check endpoint, and ignores the timeout error.
  2. Once you implement the project’s server, revert the setting by setting internalPort to "" to allow Codewind to use the default port of the container. Alternatively, choose a specific port if your container exposes multiple ports.

How to create a .cw-settings file if it does not exist

Prior to the 0.9.0 release, some Appsody and OpenShift Do (odo) templates did not come with a .cw-settings. The .cw-settings file is usually created automatically and tells Codewind how to interact with a project. Things like application and build status are tied to these settings. If you have a project from those stacks from a previous release, you must manually create the .cw-settings file. The file must reside under the project root directory.

Workaround Create a template .cw-settings file with the following contents:

"contextRoot": "",
"internalPort": "",
"healthCheck": "",
"isHttps": false,
"ignoredPaths": [

Adjusting the maximum number of concurrent builds

It is not recommended to alter this value because there can be a significant impact on performance but in some cases it may be necessary. For example, if there aren’t enough resources to run 3 builds concurrently, you can reduce the maximum number to 1 or 2. If you must adjust the maximum number of concurrent builds, you can set the MC_MAX_BUILDS environmental variable in the codewind-pfe container.

Projects build twice upon creation

If you use Codewind on Eclipse and VS Code at the same time, projects build twice during project creation, resulting in longer project creation time.

Workaround: To reduce project creation time, do not use Codewind on Eclipse and on VS Code at the same time. Close either Eclipse or VS Code, then create your project.

MicroProfile project gets updated twice upon file change

If you modify files in MicroProfile projects, sometimes the project gets double updates. You might see the application status changed from Running to Stopped twice. If you notice this status change, the default polling rate, which is 500 ms, is too short for the application monitor.

Workaround: Increase the polling rate in the server.xml file to 1000 ms or longer.

<applicationMonitor pollingRate="1000ms" />

Editing your project

Che editor might not work correctly in Microsoft Edge

Theia, the open source code editor used by Che, currently has limited support for Microsoft Edge. The Theia team is aware of the issue and is working to fix it.

Workaround: Use a different web browser.

New projects sometimes do not show in Che hierarchy view

Sometimes when a new project is created, it doesn’t show up in the hierarchy view within Eclipse Che.

Workaround: Refresh the page in the browser.

Context Root / Application Endpoint not correct

If you create or bind a project that has a context root set in .cw-settings, such as a project using the Lagom template, the context root is not picked up initially. This also happens after restarting Codewind.

Workaround For a permanent fix, edit and save the .cw-settings file, and the context root updates. For a temporary workaround, add the context root to the URL in your browser. For example, the browser might open with localhost:34567 instead of localhost:34567/mycontextroot, so type mycontextroot.

Disabling development on specific projects

Turning off auto build has no effect for Node.js projects when you run Codewind locally

If you turn off auto build for a Node.js project when you run Codewind locally, it has no effect. Changes you make to your code automatically start or restart a build even though auto build is disabled.

Appsody with Codewind

Projects created never start after installing Codewind

Intermittently, after installing Codewind on Windows, projects can be created, but they never start and instead remain in the Starting state. A Docker issue for Windows exists where, although it shows a volume is mounted, it does not allow any writing to the volume. To check if this issue is present, verify that a codewind-data directory exists in the root of your C: drive on Windows and verify you can see your Appsody project folders created within.

Workaround: This issue can appear for many reasons, so you have many possible workarounds. First, open the Docker\Settings\Shared Drives directory to confirm that your C: drive is selected. If it is not selected, select it, click Apply, and then try creating projects again. If you’re still noticing the problem, and you’re using an ID for the shared drive that is not your current user, check that the ID being used doesn’t have an expired password that requires a password reset. Reset the password if necessary.

Appsody and Docker Desktop on Windows 10

When you use Appsody, configure Docker Desktop to access your C: drive that contains your codewind-data directory. In most cases, you can configure Docker with the same user as the user who develops applications with Appsody. However, if you use Windows 10 Enterprise secured with Azure Active Directory (AAD), the AAD user does not reside in the localhost and might not be accepted in the Shared Drives tab of the Docker Desktop Settings page, especially if the organization configured AAD to issue only PIN codes instead of user passwords.

Workaround Complete the instructions in Special notes about Appsody and Docker Desktop on Windows 10.

Node.js and Swift templates remain in the starting state

The templates Appsody Node.js template and Appsody Swift template remain in the starting state by default because these templates do not have a server implemented, and therefore, their statuses cannot be detected. These templates do not have a server and are intended to help you implement your own server.

Workaround To get the application into a Started state, use a server for the application. After the application has a server, Codewind monitors the server, and the status turns to Started if the server is running. Alternatively, you can also temporarily stop Codewind from continuously pinging the application.

Kafka templates remain in the starting state

The Kafka templates for the Appsody Quarkus and Spring Boot application stacks remain in the starting state when you create a project using them. These projects require users to configure a Kafka instance to connect to in order to run correctly. Additionally, these projects do not expose an endpoint at the / path that Codewind attempts to ping because these projects are not meant to be REST-style applications.

Workaround Refer to the documentation for the respective stacks to find out how to configure a Kafka instance to work with the applications:

You should also configure the project’s health check endpoint for Codewind to ping instead of the / path.

Alternatively, you can also temporarily stop Codewind from continuously pinging the application.

An Unknown error appears on line one of the pom.xml file

If you use an Eclipse IDE for Enterprise Developer EPP prior to version 2019.06, you might see an Unknown validation error in the pom.xml file.

Workaround Switch to version 2019.06 or later, or see Cannot import any project into Eclipse with maven-jar-plugin 3.1.2.

Classpath warnings appear or the application classes are not on the classpath

If you work with Appsody projects in Codewind for VS Code, you might encounter Classpath is incomplete warnings or notifications that application classes are not on the classpath.

Workaround Add the project’s parent folder to the VS Code workspace.

  1. After you create an Appsody Java MicroProfile project, right-click and Add Project to Workspace if it is not already added.
  2. Right-click on the project from the workspace view and select Add Folder to Workspace… and choose the parent folder of the project. Click Add.
  3. Choose the project folder and click Add.

Starting in debug mode results in failure to attach the debugger

If you work with Appsody projects in Codewind, and if you restart the project in debug mode, the first attempt to attach the debugger might fail.

Workaround Run the Attach Debugger action manually. The following sample steps show instructions for VS Code. The steps to manually attach the debugger in other IDEs is similar:

  1. After you create a project, wait for VS Code to display the project’s state as Running.
  2. Then, right-click the project and select Restart in Debug Mode.
  3. Allow the process to finish. It fails, and a connection exception window appears.
  4. The Restarting <my_project> into debug mode message is displayed. Wait for this restart notification to disappear.
  5. To manually set the debugger, click the Debug tab and then Play. The debugger is successfully attached to the project if Debug <my_project> is displayed in the message bar or if the project’s state shows Debugging.

Appsody binds fail

If an Appsody repository is already added in your local Appsody CLI, the Appsody bind might fail.

These steps create the issue:

  1. The Appsody repository was added to your local Appsody CLI. The same Appsody repository was then added to Codewind from your IDE by right-clicking Projects (Local) and then clicking Manage Template Sources.
  2. Later, a project was bound to a stack from the added Appsody repository. The project appears in the Codewind Explorer view, and the appsody.log displays this error:
    [Error] The current directory is not a valid appsody project. Run `appsody init <stack>` to create one. Run `appsody list` to see the available stacks.

    Codewind displays an error. In VS Code, the error appears in the Codewind log:

    2019/11/08 11:07:29 Please wait while the command runs...
    2019/11/08 11:07:31 [Error] Repository 77b94c9b-0daf-5426-98b8-83eb8ee63e3c is not in configured list of repositories


  1. Remove the repository from the local Appsody CLI. For example, run the appsody repo remove command.
  2. Remove and add the repository back into Codewind with Manage Template Sources.
  3. Rebind the project to Codewind.

Using Appsody stacks images from private Docker registries

Local scenario For Codewind to work with an Appsody stack image on a private Docker registry, the stack must fully qualify the image name in the .appsody-config.yaml configuration of its template, for example: hostname[:port]/username/reponame[:tag]. Also, before you work with the stack, on the local system, enter docker login to the private registry.

  • Note: When you view the application log, you might see failures to pull the image during a rebuild. However, Codewind is taking the cached container image from your local machine. If you ever delete that image, you need to pull the image again. You can either create another project from the same stack or manually call a docker pull with the required image.

Remote scenario Follow the instructions in Adding a container registry in Codewind.

Open Liberty projects do not start within the default timeout

Occasionally, Appsody Open Liberty projects do not start, and you see the following entries in the appsody.log:

[Container] [INFO] CWWKM2010I: Searching for CWWKF0011I: in /opt/ol/wlp/usr/servers/defaultServer/logs/messages.log. This search will timeout after 120 seconds.
[Container] [INFO] CWWKM2013I: The file /opt/ol/wlp/usr/servers/defaultServer/logs/messages.log being validated does not exist.
[Container] [INFO] CWWKM2011E: Timed out searching for CWWKF0011I: in /opt/ol/wlp/usr/servers/defaultServer/logs/messages.log.
[Container] [ERROR] Failed to execute goal (default-cli) on project starter-app: Unable to verify if the server was started after 120 seconds.  Consider increasing the serverStartTimeout value if this continues to occur. -> [Help 1]

By default, Open Liberty projects are configured to wait 2 minutes (120 seconds) for the server to start. These messages are an indication that the server did not start within the default timeout period.


Increase the timeout value in the project’s pom.xml file. Look for the following element and increase the value:


Eclipse Che with Codewind

A Codewind workspace fails to start on a new cluster when images are not present in the local cache

Workspaces that don’t start within the allotted time might get terminated. This error occurs if a hosted image registry network is slow or if it is slow within the cluster environment.

Workaround: Change the workspace timeout of your Che installation. Enter the following command and increase the default value of 8 minutes: kubectl patch checluster/eclipse-che --patch "{\"spec\":{\"server\":{\"customCheProperties\": {\"CHE_INFRA_KUBERNETES_WORKSPACE__START__TIMEOUT__MIN\": \"8\"}}}}" --type=merge -n che

OpenShift Do (odo) with Codewind

For more information about the OpenShift Do (odo) extension in Codewind, see the README file in the codewind-odo-extension repository.

Building an odo project fails because of an existing image stream

If you try to create an image stream that already exists in your cluster and then build an odo project, you might receive error messages in the build log:

Failed to create component with name <component name>. Please use odo config view to view settings used to create component. Error: "<image stream name>" already exists unable to create ImageStream for <image stream name>


  1. Run kubectl get is to get the existing image stream.
  2. Run kubectl delete is <existing image stream name> to manually delete the existing image stream.

OKD and OpenShift

Plugin runtime crashes unexpectedly and all plugins are not working

With the latest Eclipse Che Version 7.2, you might see the following error when your user session expires for the Eclipse Che workspace: Plugin runtime crashed unexpectedly, all plugins are not working, please reload ...

These steps reproduce the issue:

  1. Install Eclipse Che on an OKD cluster.
  2. Create your Codewind workspace from this devfile.
  3. After your session expires, you see a Crash message in the Codewind workspace. Workaround Go to the Che workspace dashboard, log out of the Che workspace, and then log back in to the Che workspace. Access the Codewind workspace.

Che sometimes fails to reinstall successfully on Red Hat OpenShift on IBM Cloud

Sometimes when Che is reinstalled on Red Hat OpenShift on IBM Cloud, the installation might fail with the following error:

 ✔ Create Che Cluster eclipse-che in namespace che...done.
  ❯ ✅  Post installation checklist
    ❯ PostgreSQL pod bootstrap
      ✔ scheduling...done.
      ✔ downloading images...done.
      ✖ starting
        → ERR_TIMEOUT: Timeout set to pod ready timeout 130000

This error appears because of permissions issues in the namespace.

Workaround: To resolve the error, install Che into a namespace other than che with the --chenamespace flag when running chectl server:start.

Codewind and Tekton Pipelines

Codewind cannot access the Tekton dashboard URL

If you install Codewind before you install Tekton, Codewind cannot access the Tekton dashboard URL. In the logs, you see the following error message:

Tekton dashboard does not appear to be installed on this cluster. Please install Tekton dashboard on your cluster, and restart your Codewind Che workspace.

These steps reproduce the issue:

  1. Install Codewind on OpenShift.
  2. Install Tekton Pipelines.
  3. Click Open Tekton dashboard URL. Codewind does not access the Tekton dashboard URL.


  1. Go to the Eclipse Che workspace console.
  2. Select your workspace and stop it.
  3. After 2 minutes, start your workspace again.
  4. Now, access the Tekton dashboard URL from the Codewind palette.

Eclipse Codewind tool for OpenAPI

OpenAPI generation fails in Eclipse if the output path does not exist

In Eclipse, OpenAPI generation fails if a path does not exist, and the wizard doesn’t automatically create the folder tree hierarchy if the hierarchy doesn’t already exist.

These steps reproduce the issue:

  1. Install the latest version of Codewind.
  2. Add a sample OpenAPI .yaml file.
  3. From the Project or Package Explorer views, right-click the project and select one of the generator actions in OpenAPI Generate. A dialog window appears.
  4. In the dialog window, if necessary, select the OpenAPI definition file by clicking the Browse… button.
  5. In the Output folder field, copy and paste a path or edit the path directly.
  6. Click Finish. The OpenAPI generator fails if the folder doesn’t already exist.

Workaround: For the VS Code extension, manually create the output folder before you start the OpenAPI generator wizard. In the wizard, you can also create the Output folder in the browse dialog. Ensure that the path points to a valid folder in the project.

For post-client or post-server stub generation, use a separate output folder for code generation. Depending on the language and the generator type, the OpenAPI generator generates both source code files and build-related files. Some refactoring might be necessary. For example, move the generated source code to the proper source folder that already exists in the project. However, if your project is empty, the target output folder can be the root of the project, and you don’t need to do as much refactoring and merging.

For Eclipse, for Java-based code generators, the OpenAPI wizards provide additional support to configure the project. It is recommended that the project’s root folder is selected as the output folder of the generator so that .java files will be generated into the existing src/main/java and src/test/java folders. The wizard’s default value of the output folder is the project’s root folder. The wizard also performs some automatic configuration, including pom.xml file merging, and necessary updates to the project’s classpath.

Plugin execution validation error in the pom.xml file

When generating a Java client or server stub into an existing Appsody or Codewind Liberty Microprofile project, you might see a plugin execution validation error in the pom.xml file:

Plugin execution not covered by lifecycle configuration: org.codehaus.mojo:aspectj-maven-plugin:1.0:compile (execution: default, phase: process-classes)

The build is successful even though the validator reports this issue.

Workaround: To resolve this in Eclipse, surround the plugins element under the build element of the pom.xml file with the pluginManagement element.


The following workaround applies to Eclipse. Add the configuration element to the pom.xml file:


Setting Codewind server log levels

Assisting with problem determination by raising the default Codewind server log level

To assist with problem determination, raise the default Codewind server log level to Debug or Trace. Use the cwctl loglevels command or follow the instructions for an IDE:

  • In Eclipse, enable support features in the Codewind preferences, then right-click the connection in the Codewind Explorer view and click Codewind server log level.
  • In IntelliJ, go to the Debug Log Settings dialog and enable the org.eclipse.codewind category so Codewind diagnostic debug and trace messages are written to the log. The #org.eclipse.codewind method turns on debug level messages, and the #org.eclipse.codewind:trace method turns on trace level messages.
  • In VS Code, use the Codewind: Set Codewind Server Logging Level command in the Command Palette.

Collecting log files and environment data

Collecting diagnostics with IDEs

In Eclipse and VS Code, use the IDEs to collect all available log files and environment information.

  • In VS Code: Capture diagnostics with the Codewind: Capture Diagnostics command.
  • In Eclipse: Go to Preferences>Codewind and select Enable support features. Then, go to Codewind Explorer, right-click the connection, and click Collect Diagnostics.

Collecting diagnostics with the cwctl diagnostics collect CLI command

In Eclipse and VS Code, capture diagnostics from your installation by using the cwctl diagnostics collect CLI command to collect all available log files and environment information.

  • Find the cwctl CLI in your HOME directory in the ~/.codewind/<version> path.
  • The format of the command is cwctl diagnostics collect <command options> <arguments...>.

Command options are:

  • --conid <value> - This option triggers diagnostics collection for the remote Codewind instance. You need to have a currently configured kubectl connection. The default value is "local".
  • --all/-a - This option collects diagnostics for all defined connections, remote and local.
  • --eclipseWorkspaceDir/-e <value> - This option is the location of your Eclipse workspace directory if you use the Eclipse IDE.
  • --intellijLogsDir/-i <value> - This option is the location of your IntelliJ logs directory if you are not using the IntelliJ IDE default location.
  • --quiet/-q - Turn off console messages.
  • --projects/-p - Collect project containers information.
  • --nozip/-n - This option does not create a collection .zip file and leaves individual collected files in place.

After you run the command, find the captured diagnostics files in your HOME directory in the ~/.codewind/diagnostics/<timestamp> folder.

For more information about the cwctl diagnostics command, type cwctl help diagnostics, or see the diagnostics CLI documentation.

To remove all collected diagnostics from your system, issue the cwctl diagnostics remove command.

Eclipse troubleshooting

For Codewind specific problem solving tips when using Eclipse, see the following information.

Check the Eclipse logs

The logs are found in your Eclipse workspace under .metadata/.log.

Solving common Eclipse problems

The following list describes common problems that might affect Codewind.

Open application fails

The default browser in Eclipse might not be able to handle the content of your application. Try using a different browser by clicking on Window > Web Browser. Select a browser from the list and try to open the application again.

Debugger fails to connect

If the debugger fails to connect, you might need to increase the connection timeout:

  1. Open the Eclipse preferences and select Codewind.
  2. Increase the debug connection timeout value and click Apply and Close.

Application stuck in Starting state in Eclipse

The application might be waiting for the debugger to connect. You can resolve this by right-clicking on the project in the Codewind Explorer view and selecting Attach Debugger. If the problem occurred because the debugger failed to connect when restarting in debug mode, make sure to increase the debug connection timeout in the Codewind preferences before trying to debug again. For more information see Debugger fails to connect.

If the debugger is connected but stopped on a ClassNotFoundException, click on the run button to get past the exception. You might need to click run several times as the exception occurs more than once. To avoid stopping on the exception in the future, open the Eclipse preferences and navigate to Java > Debug. Uncheck Suspend execution on uncaught exceptions and click Apply and Close.

If the application is not waiting for the debugger to connect, try restarting the application again. If this does not work, use Codewind to disable the application and then re-enable it.

Application does not rebuild after making a change

To start a build manually, right click on the application in the Codewind Explorer view, and selecting Build.

Correct project list is not being shown

Refresh the project list by right-clicking the connection in the Codewind Explorer view and selecting Refresh.

Application is not showing the correct status

Refresh the application by right-clicking it in the Codewind Explorer view and selecting Refresh.

VS Code troubleshooting

For Codewind specific problem solving tips when using VS Code, see the following information.

Solving common VS Code problems

The following list describes common problems that might affect Codewind.

Codewind output stream

The Codewind output stream is available in the VS Code editor. It logs cwctl commands together with their output.

Check the Codewind output stream first when troubleshooting because it is particularly useful in helping you to debug unusual problems especially when starting Codewind. Some errors will also provide you with a button to open the Codewind output stream, for example:

Image of VS Code output with View button

Finding the extension logs

If you report an issue, you will be asked to upload your logs.

  1. In VS Code, open the Output view.
  2. Select the Codewind output stream. The first line of the Codewind output stream is the location of the Codewind extension logs.

    Codewind output stream with log location
  3. Upload the contents of the log file with your issue report.

Also see Collecting log files and environment data.

Executable file not found on PATH in VS Code

Codewind will not work if it cannot find the docker executable in any of the paths specified in the PATH environment variable. The error message is similar to the following:

exec: "docker": executable file not found in $PATH

First, make sure docker is installed and that you can run it from the command line. The terminal used does not have to be a terminal within VS Code. Run the following command:

$ docker --version
Docker version 19.03.8, build afacb8b

Make sure the output is similar to this example.

If you can run docker from the command line, but Codewind still fails to find docker, it’s possible that VS Code is using a different PATH than the terminal you used. To make sure the terminal and VS Code are using the same PATH, perform the following steps:

  1. Make sure you can run VS Code from the command line. The executable is code.
    • On Windows and Linux, you can run VS Code from the command line immediately after installation by running code.
    • For macOS, follow the additional step, Launching from the command line.
  2. Close all instances of VS Code.
  3. Open the terminal you ran docker from and run code.
  4. Now, the new VS Code instance shares the terminal’s PATH. Start Codewind again.

VS Code extension fails to start

You install VS Code, it fails to start, and reports a Version in "/home/ibmuser/.codewind/docker-compose.yaml" is unsupported error message. The main symptom of this issue is that the ~/codewind/docker-compose.yaml file is not created when you are installing Codewind.


  1. Check your docker-compose version is the latest, and then uninstall and reinstall Codewind.
  2. If there is a Codewind container showing in the output of the $ docker ps -all command, remove the container, and then uninstall and reinstall Codewind.

No ESLint warnings or errors

You see no ESLint warning or errors for Node.js projects. Install the ESLint extension and follow the instructions to activate the extension.


Debugger attach fails with the message “Configured debug type “java” is not supported”

Install and enable the Java Extension Pack.

Debugger fails to attach after restarting project into Debug mode

Run the attach debugger command again. If the issue persists after a few attempts, restart the project in Debug mode a second time.

Restoring lost debug connections

Remote debugging disconnects

The debug connection might be lost when debugging projects remotely.

Workaround: To reconnect if the remote debugger disconnects, right-click the project and select Attach Debugger. If the remote debugger disconnects too frequently, modify the streaming-connection-idle-timeout parameter on the kubelet.

  • For information on setting kubelet parameters, see [Set Kubelet parameters via a config file] (
  • For information on the streaming-connection-idle-timeout parameter, see the kubelet reference page.