[리눅스] consul 서비스 등록

consul 서비스 등록

consul agent 환경 설정(consul.hcl)

vim /etc/consul.d/consul.hcl

datacenter = "my-dc-1"
data_dir = "/opt/consul"
bind_addr = "0.0.0.0" # Listen on all IPv4
advertise_addr = "192.168.0.63"
retry_join = ["control1", "node1", "node2"]

 

/etc/consul.d

/opt/consul/services/

 

web-service.hcl 편집

cd /etc/consul.d

$ ls
consul.env  consul.hcl  web-service.hcl

vim web-service.hcl

service {
  name = "web check G"
  tags = ["web","http"]
  port = 80
  checks =  [{
    name = "web index page check"
    http = "http://127.0.0.1/index.htm"
    interval = "3s"
    timeout = "1s"
  },
  {
     name = "web 80 port check"
     tcp = "127.0.0.1:80"
     interval = "6s"
     timeout = "3s"
  }
 ]
}

$ ls
consul.env  consul.hcl  web-service.hcl

consul validate /etc/consul.d/consul.hcl

$ consul validate /etc/consul.d/consul.hcl
bootstrap_expect > 0: expecting 3 servers
Configuration is valid!

consul validate /etc/consul.d

$ consul validate /etc/consul.d
skipping file /etc/consul.d/consul.env, extension must be .hcl or .json, or config format must be set
skipping file /etc/consul.d/consul.hcl.bk, extension must be .hcl or .json, or config format must be set
Configuration is valid!

consul reload

$ consul reload
Configuration reload triggered

 

HTTP API

consul agent service 등록

- http://localhost:8500/v1/agent/service/register

curl -X PUT http://localhost:8500/v1/agent/service/register -d '{ "Name": "Service G", "ID": "site-1", "Address": "sangchul.kr", "Meta": {"path":"/", "ssl":"true" }, "Port": 443}'

curl -X PUT http://localhost:8500/v1/agent/service/register -d '{ "Name": "Service G", "ID": "site-2", "Address": "scbyun.com", "Meta": {"path":"/", "ssl":"true" }, "Port": 443}'

consul agent service 등록 취소

- http://localhost:8500/v1/agent/service/deregister/{ID}

curl -X PUT http://localhost:8500/v1/agent/service/deregister/site-1

 

cd /opt/consul

$ tree
.
├── checkpoint-signature
├── node-id
├── serf
│   └── local.snapshot
└── services
    ├── 3b4f681c2c755cc086d3ff38779432b5f9dd0bfc4703570c0c9c492512060651
    └── f505dccd1d9094dbc62328daa123f757f798383017083a95df22cd993c74fb35

2 directories, 5 files

3b4f681c2c755cc086d3ff38779432b5f9dd0bfc4703570c0c9c492512060651 파일 확인

$ cat services/3b4f681c2c755cc086d3ff38779432b5f9dd0bfc4703570c0c9c492512060651 | jq
{
  "Token": "",
  "Service": {
    "ID": "site-2",
    "Service": "Service G",
    "Tags": null,
    "Address": "scbyun.com",
    "Meta": {
      "path": "/",
      "ssl": "true"
    },
    "Port": 443,
    "Weights": {
      "Passing": 1,
      "Warning": 1
    },
    "EnableTagOverride": false,
    "Proxy": {
      "Mode": "",
      "MeshGateway": {},
      "Expose": {}
    },
    "Connect": {},
    "PeerName": "",
    "CreateIndex": 0,
    "ModifyIndex": 0
  },
  "Source": "remote"
}

 

참고URL

- Consul Commands (CLI) : https://developer.hashicorp.com/consul/commands

- Consul Agent Service Registration : https://developer.hashicorp.com/consul/commands/services/register

- Consul Agent Service Deregistration : https://developer.hashicorp.com/consul/commands/services/deregister