Upgrading an application on Elastic Beanstalk from Amazon Linux 1 to 2

These days i have the pleasure to upgrade an application running on AWS Elastic Beanstalk from platform Multi-container Docker to new platform Docker. The former is based on Amazon Linux 1 (AL1) while the latter runs on Amazon Linux 2 (AL2). I follow this guide. I have encountered the following advantages so far: links between …

Magento and timezones

Today i had the issue that after dumping and importing a Magento Database from one instance of MySQL into another one the order dates got transported 2 hours into the future. How come?!? Investigation and testing showed that the source database was running with timezone „GMT“ aka „UTC“ aka +00. The target database was running …

Today i corrupted MySQL…here’s how

If you want to change MySQL setting innodb_log_file_size to improve performance the top answer on stack overflow says you have to delete the redo log in /var/lib/mysql/ib_logfile* so that MySQL creates it with the new size. Before deleting you obviously shutdown mysql. But a normal shutdown of MySQL is a fast shutdown which might leave …

Docker in production

Use option userland-proxy=false to avoid having a separate docker-proxy process per mapped port from a container to host. Somehow this option survived with default true into Docker 18.09. It even isn’t documented anymore: Docs for Docker 17.09 still had a section about option userland-proxy and a good explanation how it works. This page even mentions …

Restore customers from backup in Magento

I recently had two different clients who deleted customers from their instance of Magento1 and Magento2. Although it says: Once Is Chance, Twice is Coincidence, Third Time Is A Pattern unknown i think this is a pattern which needs to be fixed in UI. But first we have to recover the missing customers. Hopefully you …

Microsoft announces WSL 2

In an exciting move Microsoft announces WSL2 for Windows 10 as a successor for WSL – Windows Subsystem for Linux. WSL2 uses a real Linux kernel to be able to run native Linux executables on Windows. The announcement mentions key features of WSL2 such as „dramatic file system performance increases” „you can run more Linux …