Implementing Lightweight Kubernetes(K3s) on Raspberry Pi Stack - Sangam Biradar

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presented at WalmartLabs , bangalore - 3 Aug 19 Docker Bangalore Meetup #45 - Docker, Kubernete, IoT & Machine Learning Implementing Lightweight Kubernetes(K3s) on Raspberry Pi Stack - Sangam Biradar

Implementing Lightweight
Kubernetes(K3s) on Raspberry Pi Stack
3 Aug 2019
Docker Bangalore
Meetup #45 -
Docker,
Kubernetes & IoT

$Whoami
Sangam Biradar
Github-sangam14
Twitter-BiradarSangam
$curl engineitops.icu
- My Personal Blog Website
- Over 100+ blog post on docker | Golang and kubernetes and
cloud
- Unique 10000+ hits
- Research Papers Presented/Published in the Conference
Proceedings(IEEE)
1.“Build Minimal Docker Container Using Golang’’- presented
and published in the proceedings of the International
Conference ICICCS2018 at Vaigai College Of Engineering,
Madurai 14 June 18

Agenda
- Why the IoT needs Kubernetes?
- Introducing k3s
- How k3s works
- What is k3sos?
- Demo
- Questions?

Why the IoT Needs Kubernetes?
- Enabling DevOps for IoT.
- Scalability
- High availability
- Efficient use of cloud resources
- Deployment to the IoT edge

Introducing k3s
• Lightweight certified Kubernetes distro
• Built for production operations
• 40MB binary, 250MB memory consumption
• Single process w/ integrated Kubernetes
master, Kubelet, and containerd
• SQLite in addition to etcd
• Simultaneously released for x86_64, ARM64,
and ARMv7
• Open source project, not yet a Rancher
product

To build k3s removed unnecessary
code and made a few enhancements

Process
– Server
• Standup k3s as server
on raspberry pi
• Get node-token for
agents
– Agents
• Install binary (just
because – can be done
with scripted version
also)
• View resource utilization
• Connect agent to server

What is k3sos
The Kubernetes Operating System
k3OS is purpose-built to simplify Kubernetes
operations in low-resource computing
environments. Installs fast. Boots faster.
Managed through Kubernetes.

Why Should You Use k3OS?
1.First...
It’s GREAT For EDGE, IoT, CI, And ARM
You get ALL the benefits of using k3s, the optimized, simplified, and streamlined Kubernetes distribution.
2. Fast...
Fast Installation
You can boot up with k3s available in under 10 seconds, with fast cluster scaling
3. Easy...
Easy Configuration Via Cloud-Init
You can turn a standard k3OS image into a configured system during boot time.
4. Simple...
Manage The OS From Within Kubernetes
You don’t need to log into remote nodes. k3OS simplifies installation and upgrading.

2.Enable container features in Kernel
Edit /boot/cmdline.txt on both the Raspberry Pi node
root@raspberrypi:~# echo "cgroup_enable=cpuset cgroup_memory=1
cgroup_enable=memory" >>/boot/cmdline.txt

3. Installing K3s
root@raspberrypi:~# curl -sfL https://get.k3s.io | sh –

4.Listing K3s Nodes
# k3s kubectl get node -o wide

6.Running Nginx Pods
root@raspberrypi:~# k3s kubectl run mynginx --image=nginx --
replicas=3 --port=80

7.Listing the Nginx Pods
# k3s kubectl get po

8.Exposing the Deployment
# k3s kubectl expose deployment mynginx --port 80

9. Verifying the endpoints controller for Pods
# k3s kubectl get endpoints mynginx
10. Testing Nginx application
# curl 10.42.0.10:80

root@raspberrypi:~# cat /var/lib/rancher/k3s/server/node-token
K108b8e370b380bea…….
11.Adding a new Node to K3s Cluster
12.Creating variable
# NODETOKEN=K108b8e370b380bea…….
root@pi-node1:~# k3s agent --server https://192.168.43.134:6443 --token
${NODETOKEN}

root@raspberrypi:~# k3s kubectl run mynginx --
image=nginx --replicas=3 --port=80
14 .Setting up Nginx

15. Verifying the endpoints controller for Pods
# k3s kubectl get endpoints mynginx
16.Delete all pods
# kubectl delete --all pods

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This presentation, delivered at the Postgres Bangalore (PGBLR) Meetup-2 on June 29th, 2024, dives deep into connection pooling for PostgreSQL databases. Aakash M, a PostgreSQL Tech Lead at Mydbops, explores the challenges of managing numerous connections and explains how connection pooling optimizes performance and resource utilization. Key Takeaways: * Understand why connection pooling is essential for high-traffic applications * Explore various connection poolers available for PostgreSQL, including pgbouncer * Learn the configuration options and functionalities of pgbouncer * Discover best practices for monitoring and troubleshooting connection pooling setups * Gain insights into real-world use cases and considerations for production environments This presentation is ideal for: * Database administrators (DBAs) * Developers working with PostgreSQL * DevOps engineers * Anyone interested in optimizing PostgreSQL performance Contact info@mydbops.com for PostgreSQL Managed, Consulting and Remote DBA Services

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We are honored to launch and host this event for our UiPath Polish Community, with the help of our partners - Proservartner! We certainly hope we have managed to spike your interest in the subjects to be presented and the incredible networking opportunities at hand, too! Check out our proposed agenda below 👇👇 08:30 ☕ Welcome coffee (30') 09:00 Opening note/ Intro to UiPath Community (10') Cristina Vidu, Global Manager, Marketing Community @UiPath Dawid Kot, Digital Transformation Lead @Proservartner 09:10 Cloud migration - Proservartner & DOVISTA case study (30') Marcin Drozdowski, Automation CoE Manager @DOVISTA Pawel Kamiński, RPA developer @DOVISTA Mikolaj Zielinski, UiPath MVP, Senior Solutions Engineer @Proservartner 09:40 From bottlenecks to breakthroughs: Citizen Development in action (25') Pawel Poplawski, Director, Improvement and Automation @McCormick & Company Michał Cieślak, Senior Manager, Automation Programs @McCormick & Company 10:05 Next-level bots: API integration in UiPath Studio (30') Mikolaj Zielinski, UiPath MVP, Senior Solutions Engineer @Proservartner 10:35 ☕ Coffee Break (15') 10:50 Document Understanding with my RPA Companion (45') Ewa Gruszka, Enterprise Sales Specialist, AI & ML @UiPath 11:35 Power up your Robots: GenAI and GPT in REFramework (45') Krzysztof Karaszewski, Global RPA Product Manager 12:20 🍕 Lunch Break (1hr) 13:20 From Concept to Quality: UiPath Test Suite for AI-powered Knowledge Bots (30') Kamil Miśko, UiPath MVP, Senior RPA Developer @Zurich Insurance 13:50 Communications Mining - focus on AI capabilities (30') Thomasz Wierzbicki, Business Analyst @Office Samurai 14:20 Polish MVP panel: Insights on MVP award achievements and career profiling

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Is your patent a vanity piece of paper for your office wall? Or is it a reliable, defendable, assertable, property right? The difference is often quality. Is your patent simply a transactional cost and a large pile of legal bills for your startup? Or is it a leverageable asset worthy of attracting precious investment dollars, worth its cost in multiples of valuation? The difference is often quality. Is your patent application only good enough to get through the examination process? Or has it been crafted to stand the tests of time and varied audiences if you later need to assert that document against an infringer, find yourself litigating with it in an Article 3 Court at the hands of a judge and jury, God forbid, end up having to defend its validity at the PTAB, or even needing to use it to block pirated imports at the International Trade Commission? The difference is often quality. Quality will be our focus for a good chunk of the remainder of this season. What goes into a quality patent, and where possible, how do you get it without breaking the bank? ** Episode Overview ** In this first episode of our quality series, Kristen Hansen and the panel discuss: ⦿ What do we mean when we say patent quality? ⦿ Why is patent quality important? ⦿ How to balance quality and budget ⦿ The importance of searching, continuations, and draftsperson domain expertise ⦿ Very practical tips, tricks, examples, and Kristen’s Musts for drafting quality applications https://www.aurorapatents.com/patently-strategic-podcast.html

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Implementing Lightweight Kubernetes(K3s) on Raspberry Pi Stack - Sangam Biradar

1. Implementing Lightweight Kubernetes(K3s) on Raspberry Pi Stack 3 Aug 2019 Docker Bangalore Meetup #45 - Docker, Kubernetes & IoT

2. $Whoami Sangam Biradar Github-sangam14 Twitter-BiradarSangam $curl engineitops.icu - My Personal Blog Website - Over 100+ blog post on docker | Golang and kubernetes and cloud - Unique 10000+ hits - Research Papers Presented/Published in the Conference Proceedings(IEEE) 1.“Build Minimal Docker Container Using Golang’’- presented and published in the proceedings of the International Conference ICICCS2018 at Vaigai College Of Engineering, Madurai 14 June 18

3. Agenda - Why the IoT needs Kubernetes? - Introducing k3s - How k3s works - What is k3sos? - Demo - Questions?

4. Why the IoT Needs Kubernetes? - Enabling DevOps for IoT. - Scalability - High availability - Efficient use of cloud resources - Deployment to the IoT edge

5. Introducing k3s • Lightweight certified Kubernetes distro • Built for production operations • 40MB binary, 250MB memory consumption • Single process w/ integrated Kubernetes master, Kubelet, and containerd • SQLite in addition to etcd • Simultaneously released for x86_64, ARM64, and ARMv7 • Open source project, not yet a Rancher product

6. To build k3s removed unnecessary code and made a few enhancements

7. How k3s works

8. Process – Server • Standup k3s as server on raspberry pi • Get node-token for agents – Agents • Install binary (just because – can be done with scripted version also) • View resource utilization • Connect agent to server

9. What is k3sos The Kubernetes Operating System k3OS is purpose-built to simplify Kubernetes operations in low-resource computing environments. Installs fast. Boots faster. Managed through Kubernetes.

10. Why Should You Use k3OS? 1.First... It’s GREAT For EDGE, IoT, CI, And ARM You get ALL the benefits of using k3s, the optimized, simplified, and streamlined Kubernetes distribution. 2. Fast... Fast Installation You can boot up with k3s available in under 10 seconds, with fast cluster scaling 3. Easy... Easy Configuration Via Cloud-Init You can turn a standard k3OS image into a configured system during boot time. 4. Simple... Manage The OS From Within Kubernetes You don’t need to log into remote nodes. k3OS simplifies installation and upgrading.

11. Demo

12. 1.Enable SSH to perform remote login

13. 2.Enable container features in Kernel Edit /boot/cmdline.txt on both the Raspberry Pi node root@raspberrypi:~# echo "cgroup_enable=cpuset cgroup_memory=1 cgroup_enable=memory" >>/boot/cmdline.txt

14. 3. Installing K3s root@raspberrypi:~# curl -sfL https://get.k3s.io | sh –

15. 4.Listing K3s Nodes # k3s kubectl get node -o wide

16. 5.# k3s kubectl get po,svc,deploy

17. 6.Running Nginx Pods root@raspberrypi:~# k3s kubectl run mynginx --image=nginx -- replicas=3 --port=80

18. 7.Listing the Nginx Pods # k3s kubectl get po

19. 8.Exposing the Deployment # k3s kubectl expose deployment mynginx --port 80

20. 9. Verifying the endpoints controller for Pods # k3s kubectl get endpoints mynginx 10. Testing Nginx application # curl 10.42.0.10:80

21. root@raspberrypi:~# cat /var/lib/rancher/k3s/server/node-token K108b8e370b380bea……. 11.Adding a new Node to K3s Cluster 12.Creating variable # NODETOKEN=K108b8e370b380bea……. root@pi-node1:~# k3s agent --server https://192.168.43.134:6443 --token ${NODETOKEN}

22. 13. # k3s kubectl get nodes

23. root@raspberrypi:~# k3s kubectl run mynginx -- image=nginx --replicas=3 --port=80 14 .Setting up Nginx

24. 15. Verifying the endpoints controller for Pods # k3s kubectl get endpoints mynginx 16.Delete all pods # kubectl delete --all pods

25. Questions? k3s.io

26. Thanks

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