21 things I’ve done in 2017

Disclaimer: this post is not about personal praise, arrogance and chattery. It’s just a checklist of strikethrough items in my life. Remember, this is my personal blog and I want to write about my life.

There is a popular tradition to summarize things done during the outgoing year. I’m personally doing this second year in a row. You might ask what’s the matter of this?

Well, for me it’s a great opportunity to realize how far did I push my life in the fixed time range. This way is great to measure your progress and set the appropriate goals for the future.

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Upgrade Cassandra cluster from 2.x to 3.x

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I started to remember why did I start blogging. The answer is “to collect my experience and share it publicly”. So, I’ll keep this going and now I want to remember how to upgrade the Cassandra cluster smoothly with no downtime.

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Cheatsheet: Git

This cheatsheet is inspired by Git Book I’ve read a few days ago. Getting some useful stuff from other sources, I’ve built a list of commands which seem quite useful for my workflow.

Won’t chit-chat about version control importance and Git domination. You know it all. Just take a look what’s here.

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Configure OSSEC to send alerts from Gmail

Setting up any system analyzer, we want to always keep a track on all events happened in our machines. The best way to make that – email alerts. It means every time when application gets alert, it’s going to forward the copy of it to your email.

By default applications like OSSEC supports only local mail servers. But what if we just don’t have them? What if we use only tools like Gmail, Yahoo etc.? At that rate we could build mail relay listening on 25 port for applications work.

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