docker運行prometheus 監控mysql

安裝docker

 

配置阿里雲Docker Yum源
[root@xingdian ~]# yum install -y yum-utils device-mapper-persistent-data lvm2 git
[root@xingdian ~]# yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
安裝Docker新版本（比如Docker 2010.2)：
[root@xingdian ~]# yum install docker-ce-20.10.2.ce -y
或者
[root@xingdian ~]# yum install docker-ce -y
啟動Docker服務
[root@xingdian ~]# systemctl enable docker
[root@xingdian ~]# systemctl start docker
查看docker版本狀態
[root@xingdian ~]# docker -v
Docker version 19.03.12, build 48a66213fe
查看docker運行狀態：
[root@xingdian ~]# docker info
Client:
Debug Mode: false
Server:
Containers: 0
Running: 0
Paused: 0
Stopped: 0
Images: 3
Server Version: 19.03.12
Storage Driver: overlay2
Backing Filesystem: extfs
Supports d_type: true
Native Overlay Diff: true
Logging Driver: json-file
Cgroup Driver: cgroupfs
Plugins:
Volume: local
Network: bridge host ipvlan macvlan null overlay
Log: awslogs fluentd gcplogs gelf journald json-file local logentries splunk syslog
Swarm: inactive
Runtimes: runc
Default Runtime: runc
Init Binary: docker-init
containerd version: 7ad184331fa3e55e52b890ea95e65ba581ae3429
runc version: dc9208a3303feef5b3839f4323d9beb36df0a9dd
init version: fec3683
Security Options:
seccomp
Profile: default
Kernel Version: 3.10.0-1062.12.1.el7.x86_64
Operating System: CentOS Linux 7 (Core)
OSType: linux
Architecture: x86_64
CPUs: 4
Total Memory: 7.637GiB
Name: xingdian ID:DW7V:VN63:7P5F:X36D:UPXA:WSXK:NVXU:FG4E:UIKY:ISIZ:AVW3:3RXT
Docker Root Dir: /var/lib/docker
Debug Mode: false
Registry: https://index.docker.io/v1/
Labels:
Experimental: false
Insecure Registries:
127.0.0.0/8
Live Restore Enabled: false
方法 2：配置鏡像加速器
[root@xuegod63 ~]# tee /etc/docker/daemon.json << 'EOF'
{
"registry-mirrors":["https://rsbud4vc.mirror.aliyuncs.com"]
}
EOF
重啟 docker 服務使配置生效
[root@xuegod63 ~]# systemctl daemon-reload && systemctl restart docker

prometheus安裝

下載鏡像包

docker pull prom/node-exporter
docker pull prom/prometheus
docker pull grafana/grafana

啟動node-exporter

docker run -d -p 9100:9100 \
-v "/proc:/host/proc:ro" \
-v "/sys:/host/sys:ro" \
-v "/:/rootfs:ro" \
--net="host" \
prom/node-exporter

等待幾秒鍾，查看端口是否起來了

root@ubuntu:~# netstat -anpt
Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name
tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN      1147/sshd       
tcp        0     36 192.168.91.132:22       192.168.91.1:63648      ESTABLISHED 2969/0          
tcp        0      0 192.168.91.132:22       192.168.91.1:63340      ESTABLISHED 1321/1          
tcp6       0      0 :::9100                 :::*                    LISTEN      3070/node_exporter

訪問url：

http://192.168.91.132:9100/metrics

效果如下：

這些都是收集到數據，有了它就可以做數據展示了

啟動prometheus

新建目錄prometheus，編輯配置文件prometheus.yml

mkdir /opt/prometheus
cd /opt/prometheus/
vim prometheus.yml

內容如下：

global:
  scrape_interval:     60s
  evaluation_interval: 60s
 
scrape_configs:
  - job_name: prometheus
    static_configs:
      - targets: ['localhost:9090']
        labels:
          instance: prometheus
 
  - job_name: linux
    static_configs:
      - targets: ['192.168.91.132:9100']
        labels:
          instance: localhost

注意：修改IP地址，這里的192.168.91.132就是本機地址

啟動prometheus

docker run  -d \
  -p 9090:9090 \
  -v /opt/prometheus/prometheus.yml:/etc/prometheus/prometheus.yml  \
  prom/prometheus

等待幾秒鍾，查看端口狀態

 

root@ubuntu:/opt/prometheus# netstat -anpt
Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name
tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN      1147/sshd       
tcp        0     36 192.168.91.132:22       192.168.91.1:63648      ESTABLISHED 2969/0          
tcp        0      0 192.168.91.132:22       192.168.91.1:63340      ESTABLISHED 1321/1          
tcp6       0      0 :::9100                 :::*                    LISTEN      3070/node_exporter
tcp6       0      0 :::22                   :::*                    LISTEN      1147/sshd       
tcp6       0      0 :::9090                 :::*                    LISTEN      3336/docker-proxy

訪問url：

http://192.168.91.132:9090/graph

效果如下：

訪問targets，url如下：

http://192.168.91.132:9090/targets

效果如下：

如果狀態沒有UP起來，等待一會，就會UP了

 

啟動grafana

新建空文件夾grafana-storage，用來存儲數據

mkdir /opt/grafana-storage

設置權限

chmod 777 -R /opt/grafana-storage

因為grafana用戶會在這個目錄寫入文件，直接設置777，比較簡單粗暴！

 

啟動grafana

docker run -d \
  -p 3000:3000 \
  --name=grafana \
  -v /opt/grafana-storage:/var/lib/grafana \
  grafana/grafana

等待幾秒鍾，查看端口狀態

root@ubuntu:/opt/prometheus# netstat -anpt
Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name
tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN      1147/sshd       
tcp        0     36 192.168.91.132:22       192.168.91.1:63648      ESTABLISHED 2969/0          
tcp        0      0 192.168.91.132:22       192.168.91.1:63340      ESTABLISHED 1321/1          
tcp6       0      0 :::9100                 :::*                    LISTEN      3070/node_exporter
tcp6       0      0 :::22                   :::*                    LISTEN      1147/sshd       
tcp6       0      0 :::3000                 :::*                    LISTEN      3494/docker-proxy
tcp6       0      0 :::9090                 :::*                    LISTEN      3336/docker-proxy
tcp6       0      0 192.168.91.132:9100     172.17.0.2:55108        ESTABLISHED 3070/node_exporter

訪問url：

http://192.168.91.132:3000/

 

默認會先跳轉到登錄頁面，默認的用戶名和密碼都是admin

 

登錄之后，它會要求你重置密碼。你還可以再輸次admin密碼！

 

密碼設置完成之后，就會跳轉到首頁

點擊Add data source，由於使用的是鏡像方式，所以版本比較新。和網絡上的文章展示的圖片不一樣！

name名字寫Prometheus

type 選擇Prometheus，因為數據都從它那里獲取

url 輸入Prometheus的ip+端口

 

點擊下面的Save & Test，如果出現綠色的，說明ok了

 

mysql所在機器操作：

安裝mysql

mysql的官方網站：www.mysql.com
mysql最新版本:8.0
mysql使用最多:5.7
默認情況下:centos的倉庫里沒有mysql,去官網下載mysql倉庫安裝包
1.下載mysql的yum倉庫
[root@22e34e653991 /]# wget https://dev.mysql.com/get/mysql80-community-release-el7-3.noarch.rpm
2.安裝mysql的yum倉庫
[root@22e34e653991 /]# rpm -ivh mysql80-community-release-el7-3.noarch.rpm
3.修改安裝版本（方法一）
[root@22e34e653991 /]# yum repolist all | grep mysql 查看所有關於mysql的庫
[root@22e34e653991 /]# yum -y install yum-utils yum的工具包
[root@22e34e653991 /]# yum-config-manager --enable mysql57-community 啟動mysql57
[root@22e34e653991 /]# yum-config-manager --disable mysql80-community 禁用mysql80
4.安裝數據庫
[root@22e34e653991 /]# yum -y install mysql mysql-server
修改yum倉庫（方法二）
systemctl start mysqld
5.查看數據庫的初始密碼
[root@22e34e653991 /]# grep 'password' /var/log/mysqld.log
2019-07-13T15:14:31.176905Z 1 [Note] A temporary password is generated for root@localhost: k12zPB1r;2Ta
6.使用密碼登陸
[root@22e34e653991 /]# mysql -u root -p'k12zPB1r;2Ta'
7.修改密碼
方法一：
mysql> ALTER USER 'root'@'localhost' IDENTIFIED BY 'Cj@123';
方法二：
[root@22e34e653991 /]# mysqladmin -u root -p'k12zPB1r;2Ta' password 'cj@123'
密碼：大小寫有特殊字符數字

cp -ar mysqld_exporter /usr/local/bin/

chmod +x /usr/local/bin/mysqld_exporter

2.登陸 mysql 為 mysql_exporter 創建賬號並授權

# 創建數據庫用戶。

CREATE USER 'exporter'@'localhost' IDENTIFIED BY 'XXXXXXXX' WITH MAX_USER_CONNECTIONS 3;

# 對 mysql_exporter 用戶授權

GRANT PROCESS, REPLICATION CLIENT, SELECT ON *.* TO 'exporter'@'localhost';

exit 退出 mysql

若mysql端口號是默認3306

3.創建 mysql 配置文件、運行時可免密碼連接數據庫：

cd mysqld_exporter-0.10.0.linux-amd64
cat my.cnf
[client]
user=exporter
password=Abcdef123!.
host=127.0.0.1

host一定要寫

 

4.啟動 mysql_exporter 客戶端

nohup ./mysqld_exporter --config.my-cnf=./my.cnf &

若mysql端口號非默認則：

只能通過

export DATA_SOURCE_NAME='exporter1:Abcdef123!.@tcp(127.0.0.1:4417)/?loc=Local'

nohup ./mysql_exporter &

mysqld_exporter 的監聽端口是 9104

5.修改 prometheus-alertmanager-cfg.yaml 文件，添加如下

vim /opt/prometheus/prometheus.yml
- job_name: 'mysql'
static_configs:
- targets: ['192.168.40.180:9104']

重啟prometheus

root@ubuntu:/opt/prometheus# docker ps |grep prometheus
0fa256f85750        prom/prometheus     "/bin/prometheus --c…"   About an hour ago   Up 29 seconds       0.0.0.0:9090->9090/tcp   wizardly_kirch

root@ubuntu:/opt/prometheus# docker restart 0fa256f85750

grafana 導入 mysql 監控圖表

mysql-overview_rev5.json

 最后就有數據啦