job_name: ‘node’
scrape_interval: 8s
static_configs:

targets: [‘192.168.159.129:9100’]
2.2 添加邮件告警配置文件
添加配置文件alertmanager.yml，配置收发邮件邮箱
vim alertmanager.yml

global:
smtp_smarthost: ‘smtp.163.com:25’　　#163服务器
smtp_from: ‘tsiyuetian@163.com’　　　　　　　　#发邮件的邮箱
smtp_auth_username: ‘tsiyuetian@163.com’　　#发邮件的邮箱用户名，也就是你的邮箱
smtp_auth_password: ‘TPP***’　　　　　　　　#发邮件的邮箱密码
smtp_require_tls: false　　　　　　　　#不进行tls验证

route:
group_by: [‘alertname’]
group_wait: 10s
group_interval: 10s
repeat_interval: 10m
receiver: live-monitoring

receivers:

• name: ‘live-monitoring’
  email_configs: to: ‘1933306137@qq.com’　　　　　　　　#收邮件的邮箱
  2.3 添加报警规则
  添加一个node_down.yml为 prometheus targets 监控
  vim node_down.yml

groups:

• name: node_down
  rules: alert: InstanceDown
  expr: up == 0
  for: 1m
  labels:
  user: test
  annotations:
  summary: “Instance {{ $labels.instance }} down”
  description: “{{ $labels.instance }} of job {{ $labels.job }} has been down for more than 1 minutes.”

四、编写docker-compose

vim docker-compose-monitor.yml

version: '2'

networks:
monitor:
driver: bridge

services:
prometheus:
image: prom/prometheus
container_name: prometheus
hostname: prometheus
restart: always
volumes:
- /usr/local/src/config/prometheus.yml:/etc/prometheus/prometheus.yml
- /usr/local/src/config/node_down.yml:/etc/prometheus/node_down.yml
ports:
- "9090:9090"
networks:
- monitor

alertmanager:
image: prom/alertmanager
container_name: alertmanager
hostname: alertmanager
restart: always
volumes:
- /usr/local/src/config/alertmanager.yml:/etc/alertmanager/alertmanager.yml
ports:
- "9093:9093"
networks:
- monitor

grafana:
image: grafana/grafana
container_name: grafana
hostname: grafana
restart: always
ports:
- "3000:3000"
networks:
- monitor

node-exporter:
image: quay.io/prometheus/node-exporter
container_name: node-exporter
hostname: node-exporter
restart: always
ports:
- "9100:9100"
networks:
- monitor

cadvisor:
image: google/cadvisor:latest
container_name: cadvisor
hostname: cadvisor
restart: always
volumes:
- /:/rootfs:ro
- /var/run:/var/run:rw
- /sys:/sys:ro
- /var/lib/docker/:/var/lib/docker:ro
ports:
- "8080:8080"
networks:
- monitor

五、启动docker-compose

#启动容器：
docker-compose -f /usr/local/src/config/docker-compose-monitor.yml up -d
#删除容器：
docker-compose -f /usr/local/src/config/docker-compose-monitor.yml down
#重启容器：
docker restart id
容器启动如下：
docker-compose快速搭建 Prometheus+Grafana监控系统

prometheus targets界面如下：
docker-compose快速搭建 Prometheus+Grafana监控系统

备注：如果State为Down，应该是防火墙问题，参考下面防火墙配置。

prometheus graph界面如下：
docker-compose快速搭建 Prometheus+Grafana监控系统

备注：如果没有数据，同步下时间。

六、防火墙配置
6.1 关闭selinux

setenforce 0
vim /etc/sysconfig/selinux
6.2 配置iptables

#删除自带防火墙
systemctl stop firewalld.service
systemctl disable firewalld.service
#安装iptables
yum install -y iptables-services
#配置
vim /etc/sysconfig/iptables
*filter
:INPUT ACCEPT [0:0]
:FORWARD ACCEPT [0:0]
:OUTPUT ACCEPT [24:11326]
-A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT
-A INPUT -p icmp -j ACCEPT
-A INPUT -i lo -j ACCEPT
-A INPUT -p tcp -m state --state NEW -m tcp --dport 22 -j ACCEPT
-A INPUT -p tcp -m state --state NEW -m tcp --dport 9090 -j ACCEPT
-A INPUT -p tcp -m state --state NEW -m tcp --dport 8080 -j ACCEPT

-A INPUT -p tcp -m state --state NEW -m tcp --dport 3000 -j ACCEPT
-A INPUT -p tcp -m state --state NEW -m tcp --dport 9093 -j ACCEPT
-A INPUT -p tcp -m state --state NEW -m tcp --dport 9100 -j ACCEPT
-A INPUT -j REJECT --reject-with icmp-host-prohibited
-A FORWARD -j REJECT --reject-with icmp-host-prohibited
COMMIT

#启动
systemctl restart iptables.service
systemctl enable iptables.service

七、配置Grafana
7.1 添加Prometheus数据源

2 配置dashboards

说明：可以用自带模板，也可以去https://grafana.com/dashboards，下载对应的模板。

7.3 查看数据
我从网页下载了docker相关的模板：Docker and system monitoring，893

输入893，就会加载出下面的信息

导入后去首页查看数据

八、附录：单独命令启动各容器

#启动prometheus
docker run -d -p 9090:9090 --name=prometheus \
-v /usr/local/src/config/prometheus.yml:/etc/prometheus/prometheus.yml \
-v /usr/local/src/config/node_down.yml:/etc/prometheus/node_down.yml \
prom/prometheus

启动grafana

docker run -d -p 3000:3000 --name=grafana grafana/grafana

#启动alertmanager容器
docker run -d -p 9093:9093 -v /usr/local/src/config/config.yml:/etc/alertmanager/config.yml --name alertmanager prom/alertmanager

#启动node exporter
docker run -d \
-p 9100:9100 \
-v "/:/host:ro,rslave" \
--name=node_exporter \
quay.io/prometheus/node-exporter \
--path.rootfs /host

#启动cadvisor
docker run                                    \
--volume=/:/rootfs:ro                         \
--volume=/var/run:/var/run:rw                 \
--volume=/sys:/sys:ro                         \
--volume=/var/lib/docker/:/var/lib/docker:ro  \
--publish=8080:8080                           \
--detach=true                                 \
--name=cadvisor                               \
google/cadvisor:latest

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