Prometheus监控Nginx服务

Prometheus监控Nginx服务

1 实现

使用的是 nginx-lua-prometheus 这个库，负责去采集 nginx 内部的指标，暴露给 Prometheus 拉取

2 安装

[root@VM-10-48-centos logs]# wget -O /etc/yum.repos.d/openresty.repo logs]# yum install -y openresty[root@VM-10-48-centos logs]# systemctl start openresty.service

3 配置

下载​​nginx-lua-prometheus​​

[root@VM-10-48-centos logs]# cd /usr/local/openresty/lualib/[root@VM-10-48-centos logs]# git clone 确保以下三个文件存在[root@VM-10-48-centos lualib]# ls -l nginx-lua-prometheus/total 40-rw-r--r-- 1 root root 3371 May 28 13:56 prometheus_keys.lua-rw-r--r-- 1 root root 28754 May 28 13:56 prometheus.lua-rw-r--r-- 1 root root 2212 May 28 13:56 prometheus_resty_counter.lua

配置openresty

[root@VM-10-48-centos openresty]# vim /usr/local/openresty/nginx/conf/nginx.confinclude /usr/local/openresty/nginx/conf.d/*.conf;

[root@VM-10-48-centos openresty]# vim /usr/local/openresty/nginx/conf.d/prometheus.conflua_shared_dict prometheus_metrics 10M;lua_package_path "/usr/local/openresty/lualib/nginx-lua-prometheus/?.lua;;";init_worker_by_lua_block { prometheus = require("prometheus").init("prometheus_metrics") metric_requests = prometheus:counter( "nginx_"Number of HTTP requests", {"host", "status"}) metric_latency = prometheus:histogram( "nginx_"HTTP request latency", {"host"}) metric_connections = prometheus:gauge( "nginx_"Number of HTTP connections", {"state"})}log_by_lua_block { metric_requests:inc(1, {ngx.var.server_name, ngx.var.status}) metric_latency:observe(tonumber(ngx.var.request_time), {ngx.var.server_name})}server { listen 9145; location /metrics { content_by_lua_block { metric_connections:set(ngx.var.connections_reading, {"reading"}) metric_connections:set(ngx.var.connections_waiting, {"waiting"}) metric_connections:set(ngx.var.connections_writing, {"writing"}) prometheus:collect() } }}

重启openresty

[root@VM-10-48-centos prometheus]# systemctl restart openresty.service

测试访问

[root@VM-10-48-centos openresty]# curl localhost:9145/metrics# HELP nginx_Number of HTTP connections# TYPE nginx_gaugenginx_0nginx_1nginx_1# HELP nginx_HTTP request latency# TYPE nginx_histogramnginx_6nginx_6nginx_6nginx_6nginx_6nginx_6nginx_6nginx_6nginx_6nginx_6nginx_6nginx_6nginx_6nginx_6nginx_6nginx_6nginx_6nginx_6nginx_6nginx_6nginx_6nginx_0# HELP nginx_Number of HTTP requests# TYPE nginx_counternginx_6# HELP nginx_metric_errors_total Number of nginx-lua-prometheus errors# TYPE nginx_metric_errors_total counternginx_metric_errors_total 0

4 配置prometheus

[root@VM-10-48-centos prometheus]# cat prometheus.yml ... - job_name: 'Nginx' static_configs: - targets: ['10.1.10.48:9145']

版权声明：本文内容由网络用户投稿，版权归原作者所有，本站不拥有其著作权，亦不承担相应法律责任。如果您发现本站中有涉嫌抄袭或描述失实的内容，请联系我们jiasou666@gmail.com 处理，核实后本网站将在24小时内删除侵权内容。