How to upgrade MySQL on old Linux AMI
Upgrading old Linux AMI with MySQL 8
I have really “old” AMI Linux instances, and I need to go with more recent MySQL versions.
DevOps
Docker, GO and CGO application build
I’ve been avoiding Docker for a very long time. I started as a sysadmin setting up servers running FreeBSD and early versions of Debian on bare-bone servers. As soon as “cloud” came into the market, I switched to AWS and GCE and have used them since then. EC2 was my always goto choice to deploy something on the internet quickly. But Docker — for some reason, I was avoiding it until this two years ago, when I started using it. Without too much trust.
But today, history is not about my love & hate relationship with Docker, but about deploying the GO application and VIPS library. A couple of problems appeared during the process, and it’s worth mentioning them for future generations because I could find much help around my issues.
How to force clean cached DNS records
links to clear cached records in popular public DNS servers:
Dealing with DNS changes can be annoying and frustrating. Changes are not visible straight away, you have to wait to see them. Thet are not even. Here you can find links to clear cached records in popular public DNS servers:
Flushing DNS cache Flush Google Public DNS Cache Purge Cloudflare Public DNS Cache Checking results You can check results here:
IntoDNS Refresh OpenDNS Cache DNSSEC Tools DNSViz. A DNS Visualization Tool DNS Check DNSSEC Analyzer SIDN DNSSEC Test
Fastest way to install Tesseract on EC2
Tesseract it’s a great library Open Source library to supply free OCR solutions for multiple libraries. You can use it directly from command line, or in your own software using supplied libraries.
FTP server on EC2 Ami Linux instance
People say that FTP is dead. But not everyone knows or can use SFTP, SSH whatever to update their website. Sometimes you just need something as simple as good old FTP server on your instance. Let’s do it.