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consul_template: https://www.hi-linux.com/posts/36431.html
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1、下载安装包 并解压consul 得到consul二进制文件
https://releases.hashicorp.com/consul/1.3.1/consul_1.3.1_linux_amd64.zip
mkdir /application && mv consul /application
2、启动脚本启动consul_server
#!/bin/bash bin_path=/application/ data_path="$bin_path"/data nodename=`hostname` idc=dc1 bindip=`/sbin/ifconfig eth0 |grep '\binet \b' |sed -nr 's#[^0-9]*([0-9.]*).*#\1#gp'` bootstrap_expect=1 $bin_path/consul agent -server \ -bind=$bindip \ -ui \ -client=0.0.0.0 \ -bootstrap-expect=$bootstrap_expect \ -data-dir $data_path \ -node $nodename \ -datacenter=$idc \ -log-level=warn \ -pid-file=$bin_path/consul.pid
3、consul配合consul_template自动修改prometheus配置
参考博客：https://www.hi-linux.com/posts/36431.html
1、consul指定添加单个key
./consul kv put prometheus/kubernetes-apiserver/address 10.0.0.31
2、consul指定获取单个key
./consul kv get prometheus/kubernetes-apiserver/address
3、consul指定删除单个key
./consul kv delete prometheus/kubernetes-apiserver/address
4、consul_template安装
$ wget https://releases.hashicorp.com/consul-template/0.18.3/consul-template_0.18.3_linux_amd64.zip $ unzip consul-template_0.18.3_linux_amd64.zip $ mv consul-template /usr/local/bin/
5、prometheus配置文件来设置tcp端口检测机制：
- job_name: "tcp_port_discorvery" scrape_interval: 5s metrics_path: /probe params: module: [tcp_connect] file_sd_configs: - files: - /home/work/software/prometheus/tcp_port.json relabel_configs: - source_labels: [__address__] target_label: __param_target - source_labels: [__param_target] target_label: instance - target_label: __address__ replacement: xxx.xx.xx.xx:31659
配置consul_template模板来进行配置渲染
vim /prometheus/template.json
[{{ range tree "prometheus/linux" }}
{
"targets": ["{{ .Value }}"],
"labels": {
"process_name": "{{ .Key }}"
}
},
{{ end }}
{
"targets": ["xxx.xx.xx.xx:80"],
"labels": {
"process_name": "tengine"
}
}
]vim /application/prometheus.ops
consul {
address = "xxx.xx.xx.xx:8500"
}
template {
source = "/prometheus/template.json"
destination = "/home/work/software/prometheus/tcp_port.json"
command = "curl -X POST http://127.0.0.1:9090/-/reload"
}测试模板生成文件 看到文件内容为空
consul-template -consul-addr xxx.xxx.xx.xx:8500 -template="complate.json:result" -once -dry
将要获取的key推到consul中注册
./consul kv put prometheus/tcp_port/k8smaster-apiserver 1xx.xx.xx.xx:6443
测试无误后启动consul-template
consul-template -config "/application/prometheus.ops" &
也可以添加到systemctl服务管理程序设置开机自启动
