Setup Linux swap and quotas

Swap and quotas. Two seemingly random subjects in one post, but for me it really has a purpose: preparation for the LFCS exam as mentioned here and here. The exam might also contain questions on encrypted storage, linux RAID and automounting of samba shares, but to me this seems so random and not at all…

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Create and expand volumes using LVM

My coming LFCS exam as mentioned in my last post, consists of about 15% of storage specific questions. LVM has a large part in it. Since I rarely need storage tools (it’s so much easier in a virtual environment), I decided to write something about it, to hopefully make it stick in my mind. Pretty…

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Short update on the 2019 plan

Short update post about a lot that has been going on and has or is about to change. This will affect the posts on cloudpro.zone so that’s the reason I’m updating you. These changes will most probably affect the post frequency and will for sure affect the post quality. Frequency because after marrying, we’re moving…

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Grafana dashboarding using Graphite

Something completely different in contrast to the last few weeks: Grafana dashboarding, using Graphite metrics. A great while ago I’ve introduced and setup Icinga 2 and Icinga Web 2 to monitor our relatively new managed hosting platform. I’ve written a couple of posts about it, starting here. Not too long after that I’ve added Graphite…

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Temporary SSH access on Linux servers

A while ago it was requested that developers should be able to login, upon request, on our production servers via SSH. Normally this is restricted to SysOps and DevOps operators. Developers have their DTA(P) to do their thing, but nevertheless management decided that they need CLI access to our live systems. Needless to say, we…

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Fail2Ban config on Ubuntu 18.04

I can be a very happy camper when I’m configuring something new and it ‘just works’ and does its job as expected and more. See the previous post on Fail2Ban. Creating a new jail and making the most important service hacker proof is a matter if minutes. Of course finetuning it to my liking can…

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OSSEC active response vs Fail2Ban

Let’s have a proper look at Fail2Ban on Ubuntu 18.0.4. Last week I was rather pleased with the replacement of CSF / LFD with UFW and OSSEC active response. It seems really rock solid. While configuring and testing, I discovered one big downside of OSSEC active response though: it only works for SSH and not…

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Replacing CSF / LFD with UFW and OSSEC

UFW and OSSEC active response. In my quest to see if I would like to replace Debian with all of its third party tooling with more up-to-date Ubuntu servers (also with third party tooling), I’ll dedicate the next couple of posts to cross off this list. Starting at the top, today I’ll be replacing CSF…

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More Debian vs Ubuntu stuff

Last week I’ve explained a bit why I’m considering jumping from Debian to Ubuntu to get our managed hosting a bit more up-to-date by default, instead of using 10 third party repos. This week I would like to specify more about our managed hosting tooling, what we’re using for Debian, what we might like to…

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From Debian to Ubuntu?

Ubuntu. Oh my. This is awkward. When I started out experimenting with Linux, I opted for CentOS since it is one of the most stable versions out there. You’ll soon find out though, that the software in the repos is too old for many situations in the web application industry. Right before I started working…

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Monitor cron with Icinga

I’m a big Icinga fan and have written about it a couple of times. Check out this awesome series for Debian. Now people have asked a better way to monitor cron (jobs). Can we integrate this into Icinga? I’ve looked at a couple or solutions that are out there, but the most obvious is to…

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Install Zammad on Debian 9

Last post was a nice intro on how I’ve found Zammad, an open source, nice looking support ticket system. Will it handle all the requirements I’ve set in last post and be ‘the one’? Let me immediately spoil that for you: it’s almost perfect and Zammad will be my choice for sure. Installing it is…

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Linux open source ticket system

For a new project, I’m looking for a Linux open source ticket system. It’s main purpose is for support tickets, but it would be awesome if it could handle ‘normal’ customer conversation as well in an efficient and nice way. I remember I’ve looked for this a couple of times already in the past and…

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