[Unit]
Description=Prometheus Server
Documentation=https://prometheus.io/docs/introduction/overview/
After=network.target

[Service]
Restart=on-failure
WorkingDirectory=/apps/prometheus/
ExecStart=/apps/prometheus/prometheus --config.file=/apps/prometheus/prometheus.yml

[Install]
WantedBy=multi-user.target

cd /apps 
wget https://github.com/prometheus/node_exporter/releases/download/v1.3.1/node_exporter-1.3.1.linux-amd64.tar.gz
tar xf node_exporter-1.3.1.linux-amd64.tar.gz

# 创建软连接
ln -sv /apps/node_exporter-1.3.1.linux-amd64  /apps/node_exporter

[Unit]
Description=Prometheus Node Exporter
After=network.target

[Service]
ExecStart=/apps/node_exporter/node_exporter

[Install]
wantedBy=multi-user.target

systemctl daemon-reload
systemctl restart node-exporter
systemctl enable node-exporter.service

# docker 部署
docker run -d --name pushgateway -p 9091:9091 prom/pushgateway

# 二进制安装
cd /apps
wget https://github.com/prometheus/pushgateway/releases/download/v1.4.2/pushgateway-1.4.2.linux-amd64.tar.gz
tar zxf pushgateway-1.4.2.linux-amd64.tar.gz

# 编写 centos7 控制脚本

cat > /etc/systemd/system/pushgateway.service << EOF
[Unit]
Description=pushgateway
After=network.target 

[Service]
Restart=on-failure
WorkingDirectory=/apps/pushgateway
ExecStart=/apps/pushgateway/pushgateway # 如果需要持久化pushgateway数据，可以加上--persistence.file="" 和--persistence.interval=5m 两个参数

[Install]
WantedBy=multi-user.target
EOF

kubectl apply -f prometheus-cfg.yaml
kubectl delete -f prometheus-deploy.yaml
kubectl applt -f prometheus-deploy.yaml

## 验证一下数据
查看 prometheus 在 target 中是否存在 pushgateway

#!/bin/bash

total_memory=$(free|awk '/Mem/{print $2}')
used_memory=$(free |awk '/Mem/{print $3}')

job_name="custom_memory_monitor"
instance_name=`ifconfig eth0 | grep -w inet | awk '{print $2}'`
pushgateway_server="htpp://192.168.15.100:9091/metrics/job"

cat <<EOF | curl --date-binary @- ${pushgateway_server}/${job_name}/instance/${instance_name}
#TYPE custom_memory_total gauge
custom_memory_total $total_memory
#TYPE custom_memory_used gauge
custom_memory_used $used_memory
EOF

bash mem_monitor.sh

cat <<EOF | curl --date-binary @- http://192.168.15.100:9091/metrics/job/test_job/instance/192.168.15.101
#TYPE node_memory_usage gauge
node_memory_usage 4311744512
# TYPE memory_total gauge
node_memory_total 103481868288
EOF

cat <<EOF | curl --date-binary @- http://192.168.15.100:9091/metrics/job/test_job/instance/192.168.15.102
#TYPE node_memory_usage gauge
node_memory_usage 4311744512
# TYPE memory_total gauge
node_memory_total 103481868288
EOF

mkdir /apps  && cd /apps

#wget https://github.com/prometheus/alertmanager/releases/download/v0.24.0/alertmanager-0.24.0.linux-amd64.tar.gz
wget https://github.com/prometheus/prometheus/releases/download/v2.35.0/prometheus-2.35.0.linux-amd64.tar.gz
tar xf prometheus-2.35.0.linux-amd64.tar.gz

# 创建软连接
ln -sv prometheus-2.35.0.linux-amd64 /apps/prometheus

# 检查配置文件
./promtool check config prometheus.yml

docker build -t wechatbot:v1 .

docker run -d --name wechatbot --restart=always \
  -v /etc/localtime:/etc/localtime \
  -v src/wechatbot.tmpl:/apps/wechatbot.tmpl \
  -p 9080:9080 wechatbot:v1

# 下载mysql源安装包
wget http://dev.mysql.com/get/mysql57-community-release-el7-8.noarch.rpm

# 安装mysql源
yum localinstall mysql57-community-release-el7-8.noarch.rpm -y 

# 检查mysql源是否安装成功
yum repolist enabled | grep "mysql.*-community.*"

# 安装MySQL (5.7需绕过验证)

yum install mysql-community-server -y --nogpgcheck


# 3、启动MySQL服务
systemctl start mysqld

# 查看MySQL的启动状态
systemctl status mysqld


#4、开机启动
systemctl enable mysqld
systemctl daemon-reload

# 5、修改root本地登录密码
# mysql安装完成之后，在/var/log/mysqld.log文件中给root生成了一个默认密码。通过下面的方式找到root默认密码，然后登录mysql进行修改：
grep 'temporary password' /var/log/mysqld.log
mysql -uroot -p

# mysql5.7默认安装了密码安全检查插件(validate_password)，默认密码检查策略要求密码必须包含：大小写字母、数字和特殊符号，
# 并且长度不能少于8位。否则会提示ERROR 1819 (HY000): Your password does not satisfy the current policy requirements错误

# 如果不需要密码策略，添加my.cnf文件中添加如下配置禁用即可：
# 配置默认编码为utf8
# 关闭客户端dns反解

echo -e "validate_password = off\ncharacter_set_server=utf8\ninit_connect='SET NAMES utf8'\nskip-name-resolve\n" >> /etc/my.cnf 
systemctl restart mysqld 

mysql -uroot -p 

## 授权
alter user 'root'@'localhost' identified by '123123';

grant all privileges on *.* to root@'%' identified by '123123' with grant option;
flush privileges;