Ubuntu 基础配置

Unbuntu 22.04

uname -r

sudo passwd root

apt install -y vim zip net-tools ufw
ufw disable && ufw status
apt-get install inetutils-*ping*

grep Permit /etc/ssh/sshd_config
PermitRootLogin yes
systemctl restart sshd

ip addr
#单网卡
vim /etc/netplan/00-installer-config.yaml
# This is the network config written by 'subiquity'
network:
  ethernets:
    ens33:
      addresses:
        - 192.168.40.132/24
      routes:
        - to: default
          via: 192.168.40.2
      nameservers:
        addresses: [114.114.114.114,8.8.8.8]
      dhcp4: false
  version: 2

#双网卡
# This is the network config written by 'subiquity'
network:
  ethernets:
    ens33:
      addresses:
        - 192.168.40.146/24
      routes:
        - to: default
          via: 192.168.40.2
      nameservers:
        addresses: [114.114.114.114,8.8.8.8]
      dhcp4: false
    ens34:
      addresses:
        - 172.31.40.146/24
  version: 2
  
netplan apply
ifconfig
ping www.baidu.com
ping 192.168.40.2
ping 192.168.40.133

Ubuntu 18.04.5

uname -r

sudo passwd root

apt install openssl-server
grep Permit /etc/ssh/sshd_config
PermitRootLogin yes
systemctl restart sshd

vim /etc/apt/sources.list
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal main restricted universe multiverse
deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal main restricted universe multiverse
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal-updates main restricted universe multiverse
deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal-updates main restricted universe multiverse
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal-backports main restricted universe multiverse
deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal-backports main restricted universe multiverse
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal-security main restricted universe multiverse
deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal-security main restricted universe multiverse
apt update

apt install -y vim zip net-tools ufw
#这里会报错 ERROR: Couldn't determine iptables version
#由于没有安装iptables 安装好可以正常关闭
apt install -y iptables
ufw disable && ufw status
apt-get install inetutils-*ping*

ip addr
root@ceph-mon1:/etc/netplan# cp /etc/netplan/01-netcfg.yaml /etc/netplan/01-netcfg.yaml.bak
root@ceph-mon1:/etc/netplan# vim /etc/netplan/01-network-manager-all.yaml
# This is the network config written by 'subiquity'
network:
  version: 2
  ethernets:
    ens33:
      addresses: [192.168.40.151/24]
      optional: true
      dhcp4: no
      gateway4: 192.168.40.2
      nameservers:
        addresses: [8.8.8.8,114.114.114.114]
    ens34:
      addresses: [172.31.40.151/24]
#可能不行 需要reboot
sudo netplan apply
ifconfig
ping www.baidu.com
ping 192.168.40.2
ping 192.168.40.133

扩展根分区

lsblk
vgdisplay
fdisk -l
fdisk /dev/sdb n t 30
lsblk
pvcreate /dev/sdb1
vgdisplay
vgextend ubuntu-vg /dev/sdb1
lvdisplay
lvextend -l +100%FREE /dev/mapper/ubuntu--vg-ubuntu--lv
lvs
resize2fs /dev/mapper/ubuntu--vg-ubuntu--lv