nomad 集群搭建

Posted 2020-12-02 rongfengliang

比较简单的集群搭建

一个server 三个client （单机） 参考代码 https://github.com/rongfengliang/nomad-cluster-demo

server 配置

# Increase log verbosity
log_level = "DEBUG"

# Setup data dir  实际配置参考自己的配置路径，必须是绝对路径
data_dir = "/Users/dalong/mylearning/nomad-cluster/server/node1/data"

# Enable the server
server {
enabled = true

# Self-elect, should be 3 or 5 for production
bootstrap_expect = 1
}

客户端配置

三个

• client1

# Increase log verbosity
log_level = "DEBUG"

# Setup data dir
data_dir = "/Users/dalong/mylearning/nomad-cluster/client/client1"

# Give the agent a unique name. Defaults to hostname
name = "client1"

# Enable the client
client {
enabled = true

# For demo assume we are talking to server1. For production,
# this should be like "nomad.service.consul:4647" and a system
# like Consul used for service discovery.
servers = ["127.0.0.1:4647"]
}

# Modify our port to avoid a collision with server1
ports {
http = 5656
}
* client2
```code
# Increase log verbosity
log_level = "DEBUG"

# Setup data dir
data_dir = "/Users/dalong/mylearning/nomad-cluster/client/client2"

# Give the agent a unique name. Defaults to hostname
name = "client2"

# Enable the client
client {
enabled = true

# For demo assume we are talking to server1. For production,
# this should be like "nomad.service.consul:4647" and a system
# like Consul used for service discovery.
servers = ["127.0.0.1:4647"]
}

# Modify our port to avoid a collision with server1
ports {
http = 5657
}

• client3

# Increase log verbosity
log_level = "DEBUG"

# Setup data dir
data_dir = "/Users/dalong/mylearning/nomad-cluster/client/client3"

# Give the agent a unique name. Defaults to hostname
name = "client3"

# Enable the client
client {
enabled = true

# For demo assume we are talking to server1. For production,
# this should be like "nomad.service.consul:4647" and a system
# like Consul used for service discovery.
servers = ["127.0.0.1:4647"]
}

# Modify our port to avoid a collision with server1
ports {
http = 5658
}

启动server && client

• 启动consul

  测试，使用单

consul agent --dev

• server

nomad agent -config server.hcl

• client(1、2、3)

按照实际，进入目录进行启动
nomad agent -config  client(1、2、3).hcl

参考界面

• consul
  

• nomad server
  

• client
  

运行job

• 生成参考代码

nomad  init 

• 修改运行个数为5

  实际代码可以参考github

group "cache" {
count = 5

• 运行

nomad run example.nomad

• 参考界面
  

consul dns 测试

说明

实际环境中我们使用集群环境，同时结合coredns 可以实现一些比较强大的功能。

参考资料

https://www.nomadproject.io/intro/getting-started/cluster.html
https://github.com/rongfengliang/nomad-cluster-demo