Cloud has been a hot topic for more than 10 years, but I started my cloud adventure only recently, mainly focusing on managing infrastructure on AWS. In the current situation, staying at home can be boring, and I must find a goal for myself out of work. So I prepared for the AWS Certified Solutions… Continue reading AWS Certification and Training
DHCP Does Not Set Default Gateway
We are using a DHCP CNI plugin to setup networking for Kubernetes pods. On a node (CentOS) that looked just like other nodes, we noticed that the pods were not getting their default gateways set (they don’t have a default route). After spending a lot of time checking configurations of DHCP server, switches, and the… Continue reading DHCP Does Not Set Default Gateway
Taking Markdown Notes with Visual Studio Code
There are numerous note-taking solutions on the web, and never-ending discussions comparing the pros/cons of them. One easily gets lost when searching for an ideal solution for themselves. You hate Evernote because it’s too bloated. But sometimes you don’t like little editors like Typora either, because they lack some features you want. After spending days… Continue reading Taking Markdown Notes with Visual Studio Code
A Journey into Time
This post is about how misconfigured time can affect the Linux operating system and lead to unexpected results. Also I’ll share some thoughts on how to get it right. In this specific example, the Linux distribution is CentOS 7. Components Involved RTC – real time clock. It is sometimes called hardware clock, can be set… Continue reading A Journey into Time
curl SSL connect error – NSS error -5961
I got this error when I wanted to clone a git repo over HTTPS: # git clone https://git.my.org/projects/test.git Initialized empty Git repository in /tmp/test/.git/ error: while accessing https://git.my.org/projects/test.git/info/refs If I access the server with curl there’s error too: # curl -v –insecure https://git.my.org * About to connect() to git.my.org port 443 (#0) * Trying 192.168.4.97…… Continue reading curl SSL connect error – NSS error -5961
Foreman and Puppet 5 – the Hard Way
As of this writing Puppet 5 isn’t supported by Foreman’s latest version (1.15.2) yet. I saw some discussions or tickets in the community about Puppet 5 but I can’t wait for a new release. I want to integrate Foreman with a separately installed Puppet 5 for several reasons: