监控系统搭建 influxdb+ telegraf + stat

环境: ubuntu 18+

1 安装 influxdb

install influxdb文档
influxdb 是一个开源的时间序列数据库，高性能读写

增加源

wget -qO- https://repos.influxdata.com/influxdb.key | sudo apt-key add -
source /etc/lsb-release
echo "deb https://repos.influxdata.com/${DISTRIB_ID,,} ${DISTRIB_CODENAME} stable" | sudo tee /etc/apt/sources.list.d/influxdb.list

apt get and start influxdb

udo apt-get update && sudo apt-get install influxdb
sudo systemctl unmask influxdb.service
sudo systemctl start influxdb

influxdb 绑定的端口

TCP port 8086 is available for client-server communication using the InfluxDB HTTP API.
TCP port 8088 is available for the RPC service to perform back up and restore operations.
查看版本
influx -version
默认配置文件/etc/influxdb/influxdb.conf
简单命令
打开 influxdb shell influx

show databases;
use <DB NAME>
show measurements # 类似 mysql show tables
select * from <MEASUREMENT NAME>

install telegraf

增加 influxdb repo

curl -sL https://repos.influxdata.com/influxdb.key | sudo apt-key add -
source /etc/lsb-release
echo "deb https://repos.influxdata.com/${DISTRIB_ID,,} ${DISTRIB_CODENAME} stable" | sudo tee /etc/apt/sources.list.d/influxdb.list

install by apt and start

sudo apt-get update && sudo apt-get install telegraf
sudo systemctl start telegraf

查看版本
telegraf -version

telegraf 的配置

配置文件 /etc/telegraf/telegraf.conf

配置 influxdb 作为输出源，默认数据库名字是 telegraf

[[outputs.influxdb]]
  ## The full HTTP or UDP URL for your InfluxDB instance.
  ##
  ## Multiple URLs can be specified for a single cluster, only ONE of the
  ## urls will be written to each interval.
  # urls = ["unix:///var/run/influxdb.sock"]
  # urls = ["udp://127.0.0.1:8089"]
   urls = ["http://127.0.0.1:8086"]

重启 telegraf sudo systemctl restart telegraf
打开 influx, 执行 show databases 应该能看到 telegraf 数据库

3. 将 statsd 作为输入源

StatsD

Plugin ID: statsd

The StatsD input plugin is a special type of plugin which runs a backgrounded statsd listener service while Telegraf is running. StatsD messages are formatted as described in the original etsy statsdimplementation.
配置按照 github的 example
改完 config ,restart telegraf

install grafana

sudo add-apt-repository "deb https://packages.grafana.com/oss/deb stable main"
curl https://packages.grafana.com/gpg.key | sudo apt-key add -

sudo apt-get update
sudo apt-get install grafana

sudo systemctl daemon-reload
sudo systemctl start grafana-server
sudo systemctl status grafana-server

配置

配置文件 /etc/grafana/grafana.ini

简单使用
启动服务后访问http://localhost:3000，默认端口为3000，可在配置文件修改。默认用户名和密码为admin/admin。登录后按照提示配置数据源：

nginx 配置

        location /grafana/ {
                include proxy_params;
                proxy_pass http://localhost:3000/;
                proxy_buffering off;
        }

grafana.ini 文件里 改 root_url,如下

root_url = %(protocol)s://%(domain)s:%(http_port)s/grafana

重启 grafana 服务

登录, 配置 data source