日常更新dd

grubby --update-kernel ALL --args net.ifnames=0  #禁止使用net.ifnames
让网卡显示名称为ethx

DEVICE=eth0  网卡名字
ONBOOT=yes    网络服务启动自动激活网卡
BOOTPROTO=dhcp 网卡工作模式
NAME=eth0 网络链接名称

DEVICE=eth1
ONBOOT=yes
BOOTPROTO=yes
IPADDR1=172.25.250.100
NETMASK=255.255.255.0
DNS1=114.114.114.114
GATEWAY1=172.25.250.2

vim /bin/vmset.sh

#!/bin/bash
cat > /etc/sysconfig/network-scripts/ifcfg-$1 <<EOF
DEVICE=$1
ONBOOT=yes
BOOTPROTO=yes
IPADDR1=$2
NETMASK=255.255.255.0
DNS1=114.114.114.114
GATEWAY1=172.25.250.2
NAME=$1
EOF
nmcli connection reload
nmcli connection up $1

chmod +x /bin/vmset.sh
vmset.sh eth1 172.25.250.254

//改完网卡 nmcli connection reload
临时IP地址(重启后没有)
ip a a 172.25.250.200/24 dev eth1
ip a show eth1
ifconfif eth1 down 关掉

/etc/rc.d/rc.local 开机就运行

chmod +x /etc/rc.d/rc.local

mkdir /openeuler
mount /dev/sr0 /openeuler

[openEuler]
name=openEuler
baseurl=file:///openeuler/
gpgcheck=0
          
rootalocalhost yum.repos.d]# ls
-bash:/usr/bin/ls:No such file or directory
root@localhost yum.repos.dl# dnf whatprovides */bin/ls
[root@localhost ~]# dnf reinstall coreutils

docker
[root@localhost yum.repos.d]# cat docker-ce.repo 
[docker-ce]
name=docker
baseurl=https://mirrors.aliyun.com/docker-ce/linux/rhel/9/x86_64/stable/
gpgcheck=0
yum makecache
dnf install docker-ce  --downloadonly --downloaddir=/mnt
cd /mnt/
mkdir docker
mv *.rpm docker
cd docker/
dnf whatprovides */createrepo
dnf install createrepo_c-0.17.6-3.oe2203sp4.x86_64 -y
createrepo -v /mnt/docker/

[root@localhost yum.repos.d]# cat  docker-ce.repo 
[docker-ce]
name=docker
baseurl=file:///mnt/docker
gpgcheck=0
yum install docker-ce
systemctl start docker
docker images

dnf install mariadb-server -y
systemctl enable --now mariadb

mysql-secure_installation
Switch to unix_socket authentication [Y/n] n
 ... skipping. 是否使用sock访问
 Remove anonymous users? [Y/n] y
 ... Success! 是否禁止匿名用户登录

 Remove test database and access to it? [Y/n] y
 - Dropping test database...  是否使用测试库
 ... Success!
 - Removing privileges on test database...
 ... Success!
 
 CREATE USER lee@'%' identified by  ‘lee';
 CREATE DATANASE bbs;
 GRANT ALL ON bbs.* TO lee@'%';
 SHOW GRANTS FOR lee@'%';

mysql -ulee  -p123 -h 172.25.250.131 

 忘记数据库密码

第一种：rm -fr /var/lib/mysql/*

第二种：systemctl stop mariadb   //首先停掉

                mysqld_safe --skip-grant-tables&

              mysql -uroot -p      

       flush privileges;

      修改密码

kill -9 mysqld_safe 

   ps  aux | grep mariadb

   killall -9  进程号  ##关完