Marian Marinov
Director of Engineering at Web Hosting Canada
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PgSQL cGroup limits
PgSQL allows you to limit many things per user, but there are a few things that are currently not available. Mainly, memory, I/O and network bandwidth limits for all connections of a single DB user.
In this talk Marian will present his own(FOSS) solution to this problem.
Performance considerations for your I/O
Selecting storage configuration for your applications have never been harder. There are many options on both local and network storage.
In this talk Marian will share with you considerations, regarding local storage configurations. Running NVMe is standard these days, but how you use those NVMes matter a lot.
You would learn about performance differences of HW RAID, SW RAID and LVM mirror?
You will also learn about how data alignment(during setup) plays an important role in storage performance.
Finally you will see how differences between filesystems impact the performance of your storage. You will see differences between ext4, xfs, btrfs and zfs.
MySQL cGroup limits
MySQL allows you to limit many things per user, but there are a few things that are currently not available. Mainly, memory, I/O and network bandwidth limits for all connections of a single DB user.
In this talk Marian will present his own(FOSS) solution to this problem.
https://github.com/hackman/mysql-cgroup-plugin
Microservices: Are they for me?
Microservices are hyped to be a very good architecture, but a lot of times they are not the best architecture for your application.
In this talk we will look at the pros and cons of using them.
LXD/Incus for your cloud infra
Why would you select LXD when there are the likes of Kubernetes, OpenShift, OpenStack and so on?
Learn in this talk :)
Fortress network protection
Fortress is a tool, that aims to assist sysadmins in handling basic DoS attacks by automatically detecting them and taking different actions for blocking the IPs from where the attack originates.
CPU attacks
In the recent years there was an influx of attacks directed not to the software that runs on our machines, but directly to the hardware that executes this software.
In this talk Marian will give you a brief history of CPU and some Memory side-channel attacks.
You will learn how these attacks affect you today.
BGP workshop
4h workshop where people with basic understanding of IPv4 can learn and play with real life BGP sessions.
Participants will be able to create sessions between each other and between two fictional Internet Exchanges(IX).
Participants are required to bring a laptop with Ethernet adapter and be able to configure VLAN on a VM on their laptops(if they are not running Linux or BSD based OS).
Some USB to ethernet adapters may be provided by Marian.
Build your own cloud with LXD
In this workshop, participants will learn what LXD is and how they can build their own cloud environments using LXD.
We will look at the different storage and network options, after which we will also dive into configuration templates.
Participants in the workshop will get first hand experience in setting up containers with various functions.
Finally, everyone would learn what are the pros and cons for the different setups shown during the workshop.
If you have questions regarding cGroups, Namespaces, network connection options for containers or storage options. Marian will try to answer all of your questions, during this very hands on workshop.
Participants are expected to be able to use SSH to executed commands on remote machines.
If you plan to build this on your computer a VM with recent Ubuntu will be preferable.
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