NATS 中文文档
  • 引言
  • 发布日志
  • NATS 2.0
  • 对比 NATS
  • FAQ
  • NATS Concepts
    • What is NATS
    • Subject-Based Messaging
    • Publish-Subscribe
    • Request-Reply
    • Queue Groups
    • Acknowledgements
    • Sequence Numbers
  • Developing With NATS
    • Introduction
    • Connecting
      • Connecting to the Default Server
      • Connecting to a Specific Server
      • Connecting to a Cluster
      • Connection Name
      • Setting a Connect Timeout
      • Ping/Pong Protocol
      • Turning Off Echo'd Messages
      • Miscellaneous functionalities
    • Automatic Reconnections
      • Disabling Reconnect
      • Set the Number of Reconnect Attempts
      • Avoiding the Thundering Herd
      • Pausing Between Reconnect Attempts
      • Listening for Reconnect Events
      • Buffering Messages During Reconnect Attempts
    • Securing Connections
      • Authenticating with a User and Password
      • Authenticating with a Token
      • Authenticating with an NKey
      • Authenticating with a Credentials File
      • Encrypting Connections with TLS
    • Receiving Messages
      • Synchronous Subscriptions
      • Asynchronous Subscriptions
      • Unsubscribing
      • Unsubscribing After N Messages
      • Replying to a Message
      • Wildcard Subscriptions
      • Queue Subscriptions
      • Draining Messages Before Disconnect
      • Structured Data
    • Sending Messages
      • Including a Reply Subject
      • Request-Reply Semantics
      • Caches, Flush and Ping
      • Sending Structured Data
    • Monitoring the Connection
      • Listen for Connection Events
      • Slow Consumers
    • Tutorials
      • Explore NATS Pub/Sub
      • Explore NATS Request/Reply
      • Explore NATS Queueing
      • Advanced Connect and Custom Dialer in Go
  • NATS Server
    • Installing
    • Running
      • Windows Service
    • Clients
    • Flags
    • Configuration
      • Securing NATS
        • Enabling TLS
        • Authentication
          • Tokens
          • Username/Password
          • TLS Authentication
          • NKeys
          • Authentication Timeout
        • Authorization
        • Multi Tenancy using Accounts
        • Decentralized JWT Authentication/Authorization
          • Account lookup using Resolver
          • Memory Resolver Tutorial
          • Mixed Authentication/Authorization Setup
      • Clustering
        • Configuration
        • TLS Authentication
      • Super-cluster with Gateways
        • Configuration
      • Leaf Nodes
        • Configuration
      • Logging
      • Monitoring
      • System Events
        • System Events & Decentralized JWT Tutorial
    • Managing A NATS Server
      • Upgrading a Cluster
      • Slow Consumers
      • Signals
    • NATS and Docker
      • Tutorial
      • Docker Swarm
      • Python and NGS Running in Docker
  • NATS Tools
    • Introduction
    • mkpasswd
    • nk
    • nsc
      • Basics
      • Streams
      • Services
      • Signing Keys
      • Revocation
      • Managed Operators
    • nats-account-server
      • Basics
      • Inspecting JWTs
      • Directory Store
      • Update Notifications
    • nats-top
      • Tutorial
    • nats-bench
  • NATS Streaming Concepts
    • Introduction
    • Relation to NATS
    • Client Connections
    • Channels
      • Message Log
      • Subscriptions
        • Regular
        • Durable
        • Queue Group
        • Redelivery
    • Store Interface
    • Store Encryption
    • Clustering
      • Supported Stores
      • Configuration
      • Auto Configuration
      • Containers
    • Fault Tolerance
      • Active Server
      • Standby Servers
      • Shared State
      • Failover
    • Partitioning
    • Monitoring
      • Endpoints
  • Developing With NATS Streaming
    • Introduction
    • Connecting to NATS Streaming
    • Publishing to a Channel
    • Receiving Messages from a Channel
    • Durable Subscriptions
    • Queue Subscriptions
    • Acknowledgements
    • The Streaming Protocol
  • NATS Streaming Server
    • Important Changes
    • Installing
    • Running
    • Configuring
      • Command Line Arguments
      • Configuration File
      • Store Limits
      • 持久化
        • 文件存储
        • SQL 存储
      • Securing
    • Process Signaling
    • Windows Service
    • Embedding NATS Streaming Server
    • Docker Swarm
  • NATS Protocol
    • Protocol Demo
    • Client Protocol
      • Developing a Client
    • NATS Cluster Protocol
  • 在 Kubernetes中使用NATS
    • 序言
    • 安装 NATS 和 NATS Streaming
    • 创建一个 Kubernetes 集群
    • 容错(Fault Tolerance)模式下的NATS Streaming 集群
    • NATS 和 Prometheus Operator
    • NATS 集群和证书管理
    • 使用 cfssl 来提高 NATS 集群的安全性
    • 使用负载均衡器(Load Balancer) 为NATS提供外部访问
    • 使用Helm在Digital Ocean 创建一个NATS 超级集群
    • 使用Helm从0到 K8s到 子节点
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这有帮助吗?

  1. 在 Kubernetes中使用NATS

使用Helm从0到 K8s到 子节点

上一页使用Helm在Digital Ocean 创建一个NATS 超级集群

最后更新于4年前

这有帮助吗?

首先,我们需要一些已经配置好的Kubernetes集群。在这个场景下我们将使用 doctl创建几个集群,当然你可以用任何可行的Kubernetes 集群搭建的解决方案。

brew install doctl
doctl kubernetes cluster create nats-k8s-sfo2 --count 3 --region sfo2
doctl kubernetes cluster create nats-k8s-ams3 --count 3 --region ams3

接下来,获取启用了子节点的 NGS 凭据。 请遵循 并选择免费的Developer计划,该计划将允许您创建多个集群间的子节点的连接。一旦你获得了这些凭据,将这些凭据作为密钥上传到k9s集群中。

for ctx in do-ams3-nats-k8s-ams3 do-sfo2-nats-k8s-sfo2; do
  kubectl --context $ctx create secret generic ngs-creds --from-file $HOME/.nkeys/creds/synadia/NGS/NGS.creds
done

安装 Helm3 然后添加 NATS 的 Helm chart 仓库:

brew install helm
helm repo add nats https://nats-io.github.io/k8s/helm/charts/
helm repo update

创建添加子节点 连接到 NGS 的配置:

# nats.yaml
leafnodes:
  enabled: true
  remotes:
    - url: tls://connect.ngs.global:7422
      credentials:
        secret:
          name: ngs-creds
          key: NGS.creds
natsbox:
  enabled: true

将它部署到不同区域的k8s集群:

for ctx in do-ams3-nats-k8s-ams3 do-sfo2-nats-k8s-sfo2; do
  helm --kube-context $ctx install nats nats/nats -f nats.yaml
done

使用部署在各个集群的 nats-box 容器来测试跨区域的链接:

kubectl --context do-ams3-nats-k8s-ams3  exec -it nats-box -- nats-sub -s nats hello
Listening on [hello]

while true; do
  kubectl --context do-sfo2-nats-k8s-sfo2  exec -it nats-box -- nats-pub -s nats hello 'Hello World!'
done

订阅的结果:

[#1] Received on [hello]: 'Hello World!'
[#2] Received on [hello]: 'Hello World!'
[#3] Received on [hello]: 'Hello World!'
[#4] Received on [hello]: 'Hello World!'
[#5] Received on [hello]: 'Hello World!'
[#6] Received on [hello]: 'Hello World!'
[#7] Received on [hello]: 'Hello World!'
[#8] Received on [hello]: 'Hello World!'
[#9] Received on [hello]: 'Hello World!'
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