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Kubernetes has steep learning curve, but no worries we're here to help!

In cloud or on-prem the journey is easier with experienced engineers!

Kubernetes for senior admins

Day 1

What is Kubernetes:

What constitutes as Kubernetes distribution: etcd, CoreDNS, Kube API, Kubelet
Pluggable Kubernetes components: CNI, CSI
Kubernetes primitives: Pod, Deployment, Service, Ingress
Integrating Kubernetes into existing infrastrcture: external-dns, cert-manager, MetalLB, SSO
Ingress controllers: Traefik, nginx, haproxy
Working with kubectl and Kubernetes Lens

Goal of the day: deploy a sample application

Day 2

Persistent workloads in Kubernetes:

Block level storage options: Longhorn, OpenEBS
Application level replication: MySQL, Mongo, Minio, Redis, KeyDB, Postgres
Quorum, primary-secondary, primary-secondary-arbiter
Failure modes, availability zones, node affinity, node selector

Goal of the day: package and deploy custom application

Day 3

Observability:

Monitoring with Prometheus
Notifications via Alertmanager
Prometheus exporters: node exporter and textfile collectors; blackbox exporter; SNMP exporter
Gotchas and caveats when writing own exporters
Logging with ECK stack: what to log, JSON usecases and caveats
Briefly about tracing

Goal of the day: set up logging and monitoring for your application

Homework

Take time to reflect and to play around with the Kubernetes sandbox that is prepared for the participant:

Get your application manifests uploaded to a Git repository
Attempt to define useful alerting rules for your application
Attempt to create histogram chart in Grafana for your application

As it's tricky to schedule 5 days in a row for training we have planned here few days break from the training to catch up with daily tasks.

Day 4

Recap homework

Managing applications in Kubernetes
Build pipelines with Drone and Kaniko
Hosting, distributing, caching Docker images with Harbor
Continuous delivery with ArgoCD
Helm vs Kustomize vs operators

Goal of the day: your application is managed by ArgoCD

Day 5

Final touches:

Planning for self-service environment for your organization
Writing Kubernetes operators yourself
Securing cluster: ACL-s, network policies, admission webhooks
Backing up cluster contents, preparing for disaster recovery

Goal of the day: set network policies and ACL-s for your application

This course specifically targets experienced sysadmins who would want to get quickly up to speed with Kubernetes especially in a self-hosted setting. Participant is expected to have usable GitHub user account and a laptop where they have installed Kubernetes client utilities kubectl, krew and kubelogin. Each participant is provided a Kubernetes sandbox for practicing, which continues to be available after the training for 4 weeks. The training is conducted by Certified Kubernetes Administrator Lauri Võsandi who has previously worked at Google as Senior Site Reliability Engineer.

Upcoming batches:

End of January in Tartu
March in Tallinn
Contact us for additional timeslots

Training price 1999EUR per person (+VAT)

Developing cloud native applications

Day 1

Introduction to containers

Microservices vs monolith and striking a balance between them
Containerization with Docker
Introduction to Kubernetes
Working with Skaffold, Kaniko
Hello world with Python, Go, Java, Nodejs
Debugging remote pods from local IDE

Day 2

Anatomy of cloud native application

Using databases, object storage, Redis
Making use of database secondaries for load distribution and high availability
Handling metrics, logs, tracing
Setting up Docker image build pipeline for your application

Day 3

Going to production

Deploying application with ArgoCD
Monitoring your application with Prometheus, Grafana
Declarative alerting rules with Prometheus operator CRD-s
Working with log aggregator such as Graylog
What is Platform Engineering and what the future holds

This course is designed for developers who want to get up to speed with development for cloud native and highly available applications.

Upcoming batches:

End of February in Tallinn
Contact us for additional timeslots

Training price 999EUR per person (+VAT)

Shell masterclass

Day 1

What is shell:

Working with shell, keyboard shortcuts, bash, zsh
Customizing shell, aliases, environment variables
Working with remote servers with OpenSSH, ssh_config, setting up keys, U2F, scp, sftp
UNIX filesystem hierarchy, navigating filesystem, ls, cd, cat etc
Basic network troubleshooting, ping, mtr, traceroute, resolv.conf, tcpdump
Package management, apt, yum, rpm

Goal of the day: secure access to remote server without passwords

Day 2

Working with textual data:

Using pipes, stdin, stdout, stderr, named pipes, zcat
Regular expressions, filtering data with grep, awk
Counting, sorting lines
Basic programming constructs, conditional statements, functions, arithmetic, formatting strings
Piping data over network connections with nc and ssh
Interacting with API-s, curl
Parsing structured data such as JSON, YAML, XML

Goal of the day: Find top URL-s, HTTP status codes, source IP-s etc from an Apache webserver logfile

Day 3

Running and scheduling scripts:

Using pseudographic user interfaces, dialog, whiptail
Working with systemd, journalctl
Scheduling jobs with cron and systemd timers
Briefly about Python and other programming languages
Briefly about Docker, Ansbile and their relationship to shell scripting
Briefly about Git

Goal of the day: Run a shell script on multiple machines

This course focuses on getting best out of using shell whether it's locally on Mac/Linux/Windows or an EC2 instance in the cloud. Over the years we've observed even seasoned developers find themselves wasting precious time while working on command line. In this course we're focusing on super-charging your engineers with command line magic! The training is conducted by Lauri Võsandi who has nearly two decades of experience working on command line and with Linux

Upcoming batches:

Contact us for additional timeslots

Training price 999EUR per person (+VAT)

Services provided

Going to prod

You have MVP ready but having trouble going to production? No worries we can help!

Evaluate production deployment options
Containerizing your application
Setting up CI/CD pipelines
Autoscaling your application
Setting up monitoring and alerting
Potential changes required to your app

Cluster review

You have something running but you're not sure if you're doing your best

Review Kubernetes components
Review Prometheus setup
Review your application setup
Security posture, upgrade path
Potential short and long term changes

Fractional devops engineer

You have something running in production but you don't have budget to hire full time DevOps Engineer or sysadmin:

Make sure your application runs well in prod
Participate in on-call rotation and incident handling
Keep components upgraded
Make sure security issues are mitigated
Covers classic Linux servers and Kubernetes both

Unlock success for your project with our tailored services. Whether transitioning to production, optimizing setups, or seeking cost-effective premium support, we've got you covered. From evaluating deployment options to fine-tuning components, our expertise ensures optimal performance and security. Our flexible pricing, open to negotiation, aligns seamlessly with your budget. Trust us to elevate your success with expertise and finesse.

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