官方地址：
    www.consul.io

    二进制部署：

    1. [root ~]# wget https://releases.hashicorp.com/consul/1.10.2/consul_1.10.2_linux_amd64.zip
    2. [root ~]# unzip consul_1.7.2_linux_amd64.zip
    3. [root ~]# mkdir /usr/local/consul
    4. [root ~]# mv  consul  /usr/local/consul/
    5. [root ~]# mkdir /var/consul/logs -p
    6. [root ~]# mkdir /var/consul/data -p

    配置文件：

    1. [root@centos7 consul]# cat consul.json 
    2. {
    3.   "datacenter": "consul",
    4.   "data_dir": "/var/consul/data",
    5.   "log_file": "/var/consul/logs/consul.log",
    6.   "log_level": "INFO",   
    7.   "node_name": "consul",
    8.   "server": true,
    9.   "ui": true,
    10.   "bootstrap_expect": 1,
    11.   "bind_addr": "192.168.168.155",   #本机ip
    12.   "client_addr": "0.0.0.0",
    13.   "raft_protocol": 3,
    14.   "enable_debug": false,
    15.   "rejoin_after_leave": true,
    16.   "enable_syslog": false
    17. }

    systemctl启动

    1. [Unit]
    2. Description=Consul
    3. Documentation=https://www.consul.io/
    5. [Service]
    6. ExecStart=/usr/local/consul/consul agent -config-dir=/usr/local/consul
    7. ExecReload=/bin/kill -HUP $MAINPID
    8. KillSignal=SIGINT
    9. LimitNOFILE=65536
    11. [Install]
    12. WantedBy=multi-user.target

    参数解释： https://www.consul.io/docs/agent/options

    注册服务

    1. 使用json方式
    2. {
    3.     "id":"node-exporter",
    4.     "name":"prometheus-02",
    5.     "address":"192.168.168.158",
    6.     "port":9100,
    7.     "tags":[
    8.         "node-export"
    9.     ],
    10.     "meta":{
    11.         "instance":"prometheus",
    12.         "group":"demo"
    13.     },
    14.     "checks":[
    15.         {
    16.             "http":"http://192.168.168.158:9100/metrics",
    17.             "interval":"5s"
    18.         }
    19.     ]
    20. }
    21. curl -x  -X PUT -d @./node_exporter.json   http://192.168.168.156:8500/v1/agent/service/register   
    23. #curl方式
    24. curl -X PUT -d '{"id": "node-exporter","name": "prometheus-01","address": "192.168.168.156","port": 9100,"tags": ["node-export"],"meta": {"instance": "prometheus", "group": "demo"}, "checks": [{"http": "http://192.168.168.156:9100/metrics", "interval": "5s"}]}'  http://192.168.168.155:8500/v1/agent/service/register

    注销掉某个注册的服务

    1. curl -X PUT http://192.168.168.155:8500/v1/agent/service/deregister/${consul 上 services的名称}

    示例 prometheus.yaml配置

    1. - job_name: 'consul-node-export'   #Targets
    2.   consul_sd_configs:    #使用consul 服务发现
    3.   - server: '192.168.168.155:8500'   #consul服务地址
    4.     services: []     #
    5.     refresh_interval: 3s    # 刷新间隔
    6.   relabel_configs:     #自定义标签及分类
    7.   - source_labels: [__meta_consul_tags]   #会匹配json里注册的tags数据
    8.     regex: .*node-export.*     #匹配tags为node-export的
    9.     action: keep   # 丢弃没有匹配到 regex 正则表达式内容的 Target 
    10.   - source_labels: [__meta_consul_service_metadata_group]  #匹配json注册的数据metadata 下key为group 
    11.     target_label: 'group'  #就使用json里group的value

    relabel_configs 官方文档https://prometheus.io/docs/prometheus/latest/configuration/configuration/#relabel_config

    示例 注册到consul的服务

    1. {
    2.     "id":"prometheus-01",     #唯一可以是ip地址也可以是主机名
    3.     "name":"node-export",   #最好是和prometheus.yaml 里的job_name 一致好区分
    4.     "address":"192.168.168.156",   #注册服务的IP地址
    5.     "port":9100,     #注册服务的端口 node-export的端口其他的export就写其他的端口
    6.     "tags":[       #为了进行过滤
    7.         "node-export"
    8.     ],
    9.     "meta":{      #自定义元数据
    10.         "instance":"prometheus",     #这里写了 但是peometheus没有写不会生效还是默认的
    11.         "group":"demo"    #对应上面的prometheus.yaml的 source_labels
    12.     },
    13.     "checks":[    #健康检查
    14.         {
    15.             "http":"http://192.168.168.156:9100/metrics",   #就是export暴露的指标
    16.             "interval":"5s" 
    17.         }
    18.     ]
    19. }

    批量注册脚本（exporter的端口还需要完善）

    1. #!/bin/bash
    3. export=$1
    4. if [ $# -lt 1 ];then
    5.    echo "please enter; please input [node=node-exporter] [memcached=memcached-exporter]"
    6.    exit -1
    7. fi
    8. host=`hostname`
    9. machine_physics_net=$(ls /sys/class/net/ | grep -v "`ls /sys/devices/virtual/net/`")
    10. IP=$(ip addr | grep "$machine_physics_net" | awk '/^[0-9]+: / {}; /inet.*global/ {print gensub(/(.*)\/(.*)/, "\\1", "g", $2)}')
    11. put_consul="http://192.168.168.155:8500/v1/agent/service/register"
    12. if [ "$export"x == "node"x ];then
    13.    port='9100'
    14. elif [ "$expor"x == "memcached"x ]
    15.    port='9150'
    16. fi
    17. curl -X PUT -d '{"id": "'${host}'","name": "'${export}'","address": "'${IP}'","port": '${port}',"tags": ["'${export}'"],"meta": {"node": "nginx-server", "group": "manager"}, "checks": [{"http": "http://'${export}':'${port}'/metrics", "interval": "5s"}]}' ${put_consul} > /dev/null 2>&1 && echo -e "\033[92m $IP 注册成功 \033[0m"