Power Saturday 2019 B2 - Running stateful(set) applications like SQL Server in K8s

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This document summarizes a Power Saturday event discussing running stateful applications like SQL Server in Kubernetes. It includes an agenda for talks on containers, orchestration using Kubernetes, and dealing with persistence for stateful applications. Kubernetes is introduced as providing orchestration to manage applications and workloads across a cluster. StatefulSets are discussed as a way to manage stateful applications in Kubernetes, ensuring pods maintain their identity and storage.

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@ClubPowerBI @aosComm @GUSS_FRANCEPower Saturday 2019
Power
Saturday
Running Stateful(set) applications like SQL
Server in K8s
David Barbarin

@ClubPowerBI @aosComm @GUSS_FRANCEPower Saturday 2019
3 communautés pour partager,
échanger et apprendre
Power BI, Data, IA, Power Platform, Office 365, SharePoint, etc.

@ClubPowerBI @aosComm @GUSS_FRANCEPower Saturday 2019
Merci à nos sponsors
http:// PowerSaturday.com
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@ClubPowerBI @aosComm @GUSS_FRANCEPower Saturday 2019
The European SharePoint, Office 365 & Azure Conference
4 Days 2,500 Delegates 150+ Sessions 120 Speakers
Use code ESPC19SPSP for 10% discount on all tickets
www.sharepointeurope.com

@ClubPowerBI @aosComm @GUSS_FRANCEPower Saturday 2019
> whoami
Architecture, Performance and high availability
David Barbarin
Principal Consultant
@mikedavem
David Barbarin
Blog

@ClubPowerBI @aosComm @GUSS_FRANCEPower Saturday 2019
❖Container, what’s that?
❖Orchestration to the rescue
❖Stateful(set)
Agenda

@ClubPowerBI @aosComm @GUSS_FRANCEPower Saturday 2019

@ClubPowerBI @aosComm @GUSS_FRANCEPower Saturday 2019
❖Kubernetes
Orchestration to the rescue
▪ 2003-2004: Birth of the Borg project
▪ 2013: From Borg to Omega
▪ 2014: Google introduces K8s
▪ 2015: The year of Kube v1.0 & CNCF K8s v1.0
▪ 2016: K8s goes to mainstream (v1.2 -> 1.5)
Helm / Minikube
First Stateful support
▪ 2017: K8s v1.6 as a stabilization release
RBAC(Beta),autoprovisioning StorageClass
K8s v1.7 Local Storage support
Containerd integration
ECS (AWS), AKS (Azure), GKE (Google)
K8s v1.11 -> v1.13
▪ 2019: K8s v1.14
Windows as worker node in K8s

@ClubPowerBI @aosComm @GUSS_FRANCEPower Saturday 2019
Orchestration to the rescue
POD
Worker node
POD
Worker node
Service
- Type: loadbalancer, nodePort, clusterIP
- Selector
- Source port : target port
- Endpoints
Kube-proxy
Master node Master node Master node API server
etcd
Scheduler
Affinity / anti-affinity
Labels
Worker node resource availability
Others …
Controller manager
Namespace controller
Pod controller
Service controller
…
DESIRED STATE
kubelet kubelet
health
Control plane

@ClubPowerBI @aosComm @GUSS_FRANCEPower Saturday 2019
❖Stateful = Dealing with persistence
Stateful(set)
Pod

@ClubPowerBI @aosComm @GUSS_FRANCEPower Saturday 2019
❖Stateful = Dealing with persistence
Stateful(set)
/var/opt/mssql
Pod
Persistent volume (PV)
▪ - Provisioner
▪ - StorageClass
▪ - Options
▪ - Reclaim policy
▪ - Static vs Dynamic provisioning
Persistent volume claim (PVC)
▪ - Access mode = RWO, ROM, RWM
▪ - Storage size
/var/opt/mssql
Pod
▪ Capabilities depend on storage plugin / providers
▪ Internal (in-tree) / (out-of-tree) external provisioners
▪ Access mode = RWO / ROM / RWM
▪ ReclaimPolicy = Retained / Delete

@ClubPowerBI @aosComm @GUSS_FRANCEPower Saturday 2019
❖Why StatefulSet?
Stateful(set)
Worker node Worker node Worker node
MSSQL-1 MSSQL-2 MSSQL-3
Replica Replica Replica
ReplicaSet Replica controller
Deployment
Kubectl scale <replicaset> --replicas=3

@ClubPowerBI @aosComm @GUSS_FRANCEPower Saturday 2019
Merci!

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Ivanti’s Patch Tuesday breakdown goes beyond patching your applications and brings you the intelligence and guidance needed to prioritize where to focus your attention first. Catch early analysis on our Ivanti blog, then join industry expert Chris Goettl for the Patch Tuesday Webinar Event. There we’ll do a deep dive into each of the bulletins and give guidance on the risks associated with the newly-identified vulnerabilities.

System Design Case Study: Building a Scalable E-Commerce Platform - Hiike

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HCL Notes and Domino License Cost Reduction in the World of DLAU

panagenda

Webinar Recording: https://www.panagenda.com/webinars/hcl-notes-and-domino-license-cost-reduction-in-the-world-of-dlau/ The introduction of DLAU and the CCB & CCX licensing model caused quite a stir in the HCL community. As a Notes and Domino customer, you may have faced challenges with unexpected user counts and license costs. You probably have questions on how this new licensing approach works and how to benefit from it. Most importantly, you likely have budget constraints and want to save money where possible. Don’t worry, we can help with all of this! We’ll show you how to fix common misconfigurations that cause higher-than-expected user counts, and how to identify accounts which you can deactivate to save money. There are also frequent patterns that can cause unnecessary cost, like using a person document instead of a mail-in for shared mailboxes. We’ll provide examples and solutions for those as well. And naturally we’ll explain the new licensing model. Join HCL Ambassador Marc Thomas in this webinar with a special guest appearance from Franz Walder. It will give you the tools and know-how to stay on top of what is going on with Domino licensing. You will be able lower your cost through an optimized configuration and keep it low going forward. These topics will be covered - Reducing license cost by finding and fixing misconfigurations and superfluous accounts - How do CCB and CCX licenses really work? - Understanding the DLAU tool and how to best utilize it - Tips for common problem areas, like team mailboxes, functional/test users, etc - Practical examples and best practices to implement right away

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June Patch Tuesday

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HCL Notes and Domino License Cost Reduction in the World of DLAU

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Power Saturday 2019 B2 - Running stateful(set) applications like SQL Server in K8s

1. @ClubPowerBI @aosComm @GUSS_FRANCEPower Saturday 2019 Power Saturday Running Stateful(set) applications like SQL Server in K8s David Barbarin

2. @ClubPowerBI @aosComm @GUSS_FRANCEPower Saturday 2019 3 communautés pour partager, échanger et apprendre Power BI, Data, IA, Power Platform, Office 365, SharePoint, etc.

3. @ClubPowerBI @aosComm @GUSS_FRANCEPower Saturday 2019 Merci à nos sponsors http:// PowerSaturday.com Silver Bronze Gold

4. @ClubPowerBI @aosComm @GUSS_FRANCEPower Saturday 2019 The European SharePoint, Office 365 & Azure Conference 4 Days 2,500 Delegates 150+ Sessions 120 Speakers Use code ESPC19SPSP for 10% discount on all tickets www.sharepointeurope.com

5. @ClubPowerBI @aosComm @GUSS_FRANCEPower Saturday 2019 > whoami Architecture, Performance and high availability David Barbarin Principal Consultant @mikedavem David Barbarin Blog

6. @ClubPowerBI @aosComm @GUSS_FRANCEPower Saturday 2019 ❖Container, what’s that? ❖Orchestration to the rescue ❖Stateful(set) Agenda

7. @ClubPowerBI @aosComm @GUSS_FRANCEPower Saturday 2019

8. @ClubPowerBI @aosComm @GUSS_FRANCEPower Saturday 2019 ❖Kubernetes Orchestration to the rescue ▪ 2003-2004: Birth of the Borg project ▪ 2013: From Borg to Omega ▪ 2014: Google introduces K8s ▪ 2015: The year of Kube v1.0 & CNCF K8s v1.0 ▪ 2016: K8s goes to mainstream (v1.2 -> 1.5) Helm / Minikube First Stateful support ▪ 2017: K8s v1.6 as a stabilization release RBAC(Beta),autoprovisioning StorageClass K8s v1.7 Local Storage support Containerd integration ECS (AWS), AKS (Azure), GKE (Google) K8s v1.11 -> v1.13 ▪ 2019: K8s v1.14 Windows as worker node in K8s

9. @ClubPowerBI @aosComm @GUSS_FRANCEPower Saturday 2019 Orchestration to the rescue POD Worker node POD Worker node Service - Type: loadbalancer, nodePort, clusterIP - Selector - Source port : target port - Endpoints Kube-proxy Master node Master node Master node API server etcd Scheduler Affinity / anti-affinity Labels Worker node resource availability Others … Controller manager Namespace controller Pod controller Service controller … DESIRED STATE kubelet kubelet health Control plane

10. @ClubPowerBI @aosComm @GUSS_FRANCEPower Saturday 2019 ❖Stateful = Dealing with persistence Stateful(set) Pod

11. @ClubPowerBI @aosComm @GUSS_FRANCEPower Saturday 2019 ❖Stateful = Dealing with persistence Stateful(set) /var/opt/mssql Pod Persistent volume (PV) ▪ - Provisioner ▪ - StorageClass ▪ - Options ▪ - Reclaim policy ▪ - Static vs Dynamic provisioning Persistent volume claim (PVC) ▪ - Access mode = RWO, ROM, RWM ▪ - Storage size /var/opt/mssql Pod ▪ Capabilities depend on storage plugin / providers ▪ Internal (in-tree) / (out-of-tree) external provisioners ▪ Access mode = RWO / ROM / RWM ▪ ReclaimPolicy = Retained / Delete

12. @ClubPowerBI @aosComm @GUSS_FRANCEPower Saturday 2019

13. @ClubPowerBI @aosComm @GUSS_FRANCEPower Saturday 2019 ❖Why StatefulSet? Stateful(set) Worker node Worker node Worker node MSSQL-1 MSSQL-2 MSSQL-3 Replica Replica Replica ReplicaSet Replica controller Deployment Kubectl scale <replicaset> --replicas=3

14. @ClubPowerBI @aosComm @GUSS_FRANCEPower Saturday 2019 ❖Why StatefulSet? Stateful(set) Worker node Worker node Worker node MSSQL-1 MSSQL-2 MSSQL-3 Replica Replica Replica ReplicaSet Replica controller Deployment Kubectl scale <replicaset> --replicas=3

15. @ClubPowerBI @aosComm @GUSS_FRANCEPower Saturday 2019

16. @ClubPowerBI @aosComm @GUSS_FRANCEPower Saturday 2019 Merci!

Power Saturday 2019 B2 - Running stateful(set) applications like SQL Server in K8s

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