Author Archives: erictummers

About erictummers

Working in a DevOps team is the best thing that happened to me. I like challenges and sharing the solutions with others. On my blog I’ll mostly post about my work, but expect an occasional home project, productivity tip and tooling review.

Time drift on Cloud Foundry

On April 24th the ssl certificate of cloudfoundry is renewed. Directly after that I got errors on the certificate: Workaround My workaround was to create an offline buildpack. Fix On their Slack channel I got the tip to look at … Continue reading

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Offline buildpack for Cloud Foundry

This post is a combination of information available elsewhere (links are included) and can be used to get you’re own offline buildpack on Cloud Foundry. Prerequisites install go (https://ahmadawais.com/install-go-lang-on-macos-with-homebrew/) Dotnet-core buildpack Instructions on https://github.com/cloudfoundry/dotnet-core-buildpack/tree/v2.0.1 Warning! buildpack is 841MB. Now you … Continue reading

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Deploy your first dotnet core app to Cloud Foundry

After installing Cloud Foundry it is time to deploy your first dotnet core app. Make sure you’re using the right framework/sdk version. If the version is not supported by Cloud Foundry you’ll get logging like below You can force the … Continue reading

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Install Cloud Foundry on macOS with Virtualbox

We’re investigating Cloud Foundry for our PAAS solution. At home I’ve installed it on my mac with virtualbox. This post is a combination of information available elsewhere (links are included) and can be used to get you’re own local Cloud … Continue reading

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Performance boost Neo4J ORM

We’ve created our own (very) simple ORM for saving data in Neo4J. Performance was not relevant until loading a weekly batch took about 8 days. After some tweaks we manage to load the data in just over one day. (29 … Continue reading

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Invoke-Webrequest UnauthorizedAccessException

Today I got an UnauthorizedAccessException when running the following script in powershell There was no logging on the webserver, there was no access-denied message, there was no traffic at all. What happend? Turns out the problem was the file (data.json) … Continue reading

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Load environment variables in dotnet Core 1.1 hosted in IIS

On our webserver we plan to move configuration to environment variables. We can set those environment variables in our Powershell Dsc script. But the website does not pick up the environment variables. There is an issue on github (#1864) that … Continue reading

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