Deploying MySQL and MongoDB in Kubernetes

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#信息技术

Kubernetes作为其最流行的发行版Openshift，作为一个容器编排平台受到了广泛关注。但是，数据库仍然是一个外部实体，主要是因为它们具有状态性。
在本演示中，我将讨论如何在kubernetes/openshift上部署开源数据库（mysql/percona xtradb cluster和mongodb）。对于PerconaXtradb集群（PXC），我们将使用MySQL代理来实现读/写拆分。
如果您从未使用过kubernetes和openshift，我将快速介绍这些技术。还有一个演示，我将使用proxysql和openshift-origin中的mongodb replicaset建立一个pxc集群，并尝试将其破坏。
本次网络研讨会结束后，您将更好地了解：
如何在您的环境中利用kubernetes/openshift 如何使用statefulset在kubernetes/openshift中部署开源数据库。
*如何操作Kubernetes中的数据库

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1 .Deploying MySQL and MongoDB in Kubernetes Alexander Rubin Percona

2 .About me ● Working with MySQL for 10-15 years ○ Started at MySQL AB, Sun Microsystems, Oracle (MySQL Consulting) ○ Joined Percona in 2013 2

3 .What is Kubernetes? Container orchestration system /* Operating system */ * Kubernetes is an open source system for managing containerized applications across multiple hosts 3

4 .Container orchestration 4

5 .Container Orchestration in Barcelona 5

6 .Why ? Deployment, Deployment, Deployment! ○ Challenge: how to deploy massively scaled application ○ Or databases: how do you deploy 100 nodes clustering system 6

7 .Kubernetes Implementations ● ● ● ● ● ● ● 7

8 .Let’s look under the hood 8

9 .

10 .

11 .● ● ● ● ● ○

12 .Databases in Containers: Challenges 1. Preserving state 2. Setup as cluster/replication 12

13 .● ○ ○

14 .

15 .Why for databases? 15

16 .MySQL In Kubernetes ● A single instance is easy ○ https://kubernetes.io/docs/tasks/run-application/run-single-instance-stateful-appli cation/ 16

17 .A complex setup is … more complex ● High Availability ● Persistent Storage ● Backup and recovery ● Traffic routing ● Monitoring 17

18 .18

19 .Replication

20 .Replication Options ● Traditional MySQL replication ● Group Replication ● Percona XtraDB Cluster 20

21 .Traditional Replication challenges ● No automatic failover ○ New master detection can be quite complicated ● No automatic slave setup 21

22 .Group Replication ● Not mature enough ● Still no automatic slave setup 22

23 .What is Percona XtraDB Cluster (PXC)? 23

24 .Why PXC? Auto provisioning... 24

25 .PXC: Data transfer 25

26 .Storage

27 .Storage options ● Local storage ○ Can be fast (SSD, NVMe options) ○ Still limited management capabilities in Kubernetes ● Network storage ○ Management and Flexibility if supported by your setup ■ Supported by major cloud providers ○ On-premise setup may require Ceph or SAN ○ The dynamic provision of persistent volumes is required 27

28 .Traffic routing

29 .Traffic routing ● ProxySQL ○ High-performance MySQL proxy ○ Query Routing ○ Supports Failover 29

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