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error NETSDK1127: The targeting pack Microsoft.NETCore.App is not installed. Please restore and try again

When you try to build a .NET6 solution using .NET7 as the latest installed version of SDK you may notice the below issue.

C:\Program Files\dotnet\sdk\7.0.302\Sdks\Microsoft.NET.Sdk\targets\Microsoft.NET.Sdk.FrameworkReferenceResolution.targets(376,5): error NETSDK1127: The targeting pack Microsoft.NETCore.App is not installed. Please restore and try again.

This issue is related to some variables that are not set properly and the right location for the tools cannot be determined although they are installed inside the operating system.

The task is using the default .NET runner of Teamcity and the default MSbuild version is set to Cross-platform MSBuild.

Switch to another version of MSBuild will most probably resolve the issue. For example in the setup I was working switching to MSBuild Tools 2022 removed the issue and build could be performed successfully.

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npm ERR! ERESOLVE could not resolve dependency

I was working on a project which had a node install task as a part of a docker file build. The build was not successful due to the error shown below. This is a dependency error and can be solved by choosing the right versions on your package-lock.json.

package-lock.json is automatically generated for any operations where npm modifies either the node_modules tree, or package.json. It describes the exact tree that was generated, such that subsequent installs are able to generate identical trees, regardless of intermediate dependency updates.

However there is also another way you can get rid of such cases. If you do have specific dependencies inside your package-lock.json you can proceed with the following steps.

Remove package-lock.json from your project
Remove node_modules folder 
Run npm install
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Error from server (Forbidden): nodes is forbidden: User “” cannot list resource “nodes” in API group “” at the cluster scope

kubelogin is a client-go credential (exec) plugin implementing azure authentication. This plugin provides features that are not available in kubectl. It is supported on kubectl v1.11+ and you can bypass interactive authentication with it. This means that you do not have to enter a device code login when interacting with AKS.

I had to use the tool for managed identity authentication with Kubernetes service. In the documentation you can find instructions on how to use it for cases like user login, service principal, managed identity.

https://azure.github.io/kubelogin/concepts/login-modes/msi.html

Although I was following the correct instructions I was struggling with the error shown below when I was executing kubectl commands.

This error was due to the fact that I was not requesting the admin credentials on the kubectl command.

When I was asking for credentials with the below command I ended up with the error.

az aks get-credentials--resource-group rg --name clustername

As I had assigned the Kubernetes admin Cluster role on my managed identity I was able to execute kubectl commands when using.

az aks get-credentials --admin --resource-group rg --name clustername
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Get powershell command result as string

Sometimes you may end up with wrong results on powershell because of the return object. A detailed demonstration can be located below where the return object is not a string and the evaluation of equals is not correct.

For example lets assume that we need to check docker status from powershell and catch this result through the string that is returned. When docker is not running you can expect a similar message like the below.

By getting the result of the docker info command into a variable we can see that the return object is of type Object in powershell.

When you try to use the contains functions with this object in order to evaluate the docker status you will end up with a false result as is not evaluated correctly.

In order to resolve this issue you should specify that the result should be a string with Out-String function.

Then when you evaluate the expression with Contains function this is performed as expected and the correct result is returned.