如在使用中有疑问，可以交流哈
##前提已经有了k8s集群钱上面部署有promenade
#https://prometheus.io/download/ 去官网下载exporter
#解压

mkdir -p /opt/soft && cd  /opt/soft 
tar -xf   mysqld_exporter-0.13.0.linux-amd64.tar.gz
ln -s  mysqld_exporter-0.13.0.linux-amd64   mysqld_exporter
groupadd prometheus
useradd -g prometheus -m -d /var/lib/prometheus -s /sbin/nologin prometheus
chown -R prometheus:prometheus /opt/soft/

##因为有密码所以报存起来 客户端链接配置

cat /opt/soft/mysqld_exporter/.my.cnf 
[client]
user=mysqld_exporter
password=mysqld_exporter

##做成后端服务,systemd来管理 需要到system目录建service

`cd /etc/systemd/system/`  ##必须此目录下新建service，不然报错

cat  <<'EOF' >  mysqld_exporter.service 
[Unit]
Description=mysqld_exporter
Wants=network-online.target
After=network-online.target

 
[Service]
Type=simple
User=prometheus
ExecStart=/opt/soft/mysqld_exporter/mysqld_exporter --config.my-cnf=/opt/soft/mysqld_exporter/.my.cnf  --collect.auto_increment.columns --collect.engine_innodb_status     --collect.global_status  --web.listen-address=0.0.0.0:9104 
Restart=always
 
[Install]
WantedBy=multi-user.target
EOF

##需哟登陆mysql数据库，此处需要使用

user.host=‘localhost’；
CREATE USER 'mysqld_exporter'@'%' IDENTIFIED BY 'mysqld_exporter；
GRANT PROCESS, REPLICATION CLIENT, SELECT ON *.* TO 'mysqld_exporter'@'%';
flush privileges;

#加载新建或者修改service配置
systemctl daemon-reload
#启动服务
systemctl start mysqld_exporter.service
#加到开机自启动
systemctl enable node_exporter.service
#查看服务状态非常有用 加个 -l 参数

systemctl status   mysqld_exporter.service  -l

#################以上步骤为msyql主机的操作#################


```bash
#################在k8s集群修改prometheues.configmap监控系统操作###################
##在configmap增加msyql的job配置
    - job_name: prometheus
      static_configs:
      - targets:
        - localhost:9090
    - job_name: mysqld_exporter
      static_configs:
      - targets:
        - x.x.x.x:9104   ###此处冒号不能是空格

 #详细内容见 本目录下 promethuesConfigmap.yml        
###重启pod 因为deployment 删除pod后会重新加载comfigmap配置