rsync定时代码同步
环境配置
关闭防火墙 selinux
systemctl stop firewalld
systemctl disable firewalld
setenforce 0
vim /etc/selinux/config
SELINUX=disable
设置主机名
hostnamectl set-hostname code
hostnamectl set-hostname backup
设置静态地址
cd /etc/sysconfig/netwrok-scripts
ls
cat ifcfg-ens33
vim ifcfg-ens33IPADDR=192.168.17.2
BOOTPROTO=none
511
配置YUM源
关闭NetworkManager（又忘掉了，影响rsync）
时钟同步（又忘掉了）
看来要使用NAT模式，那么两个主机都要使用NAT模式？才能开rsync？
是的
为什么配置rsync定时备份环境需要配置ntpdate cn.ntp.org.cn
设置静态IP
code
[root@localhost network-scripts]# ls
ifcfg-ens33 ifdown-bnep ifdown-ippp ifdown-post ifdown-sit ifdown-tunnel ifup-bnep ifup-ippp ifup-plip ifup-ppp ifup-Team ifup-wireless network-functions-ipv6
ifcfg-lo ifdown-eth ifdown-ipv6 ifdown-ppp ifdown-Team ifup ifup-eth ifup-ipv6 ifup-plusb ifup-routes ifup-TeamPort init.ipv6-global
ifdown ifdown-ib ifdown-isdn ifdown-routes ifdown-TeamPort ifup-aliases ifup-ib ifup-isdn ifup-post ifup-sit ifup-tunnel network-functions
[root@localhost network-scripts]# cat ifcfg-ens33
BOOTPROTO=none
DEFROUTE=yes
DEVICE=ens33
ONBOOT=yes
IPADDR=192.168.17.2
[root@localhost network-scripts]# vim ifcfg-ens33
[root@localhost network-scripts]# cat ifcfg-ens33
BOOTPROTO=none
DEFROUTE=yes
DEVICE=ens33
ONBOOT=yes
IPADDR=192.168.235.9
GATEWAY=192.168.235.2
DNS1=8.8.8.8
[root@localhost network-scripts]# systemctl restart netwrok
Failed to restart netwrok.service: Unit not found.
[root@localhost network-scripts]# systemctl network restart
Unknown operation 'network'.
[root@localhost network-scripts]# systemctl restart network
[root@localhost network-scripts]# route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 192.168.235.2 0.0.0.0 UG 100 0 0 ens33
192.168.235.0 0.0.0.0 255.255.255.0 U 100 0 0 ens33
[root@localhost network-scripts]# ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00inet 127.0.0.1/8 scope host lovalid_lft forever preferred_lft foreverinet6 ::1/128 scope host valid_lft forever preferred_lft forever
2: ens33: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000link/ether 00:0c:29:57:94:60 brd ff:ff:ff:ff:ff:ffinet 192.168.235.9/24 brd 192.168.235.255 scope global noprefixroute ens33valid_lft forever preferred_lft foreverinet6 fe80::20c:29ff:fe57:9460/64 scope link valid_lft forever preferred_lft forever
3: virbr0: <BROADCAST,MULTICAST> mtu 1500 qdisc noqueue state DOWN group default qlen 1000link/ether 52:54:00:3d:30:2a brd ff:ff:ff:ff:ff:ff
4: virbr0-nic: <BROADCAST,MULTICAST> mtu 1500 qdisc pfifo_fast master virbr0 state DOWN group default qlen 1000link/ether 52:54:00:3d:30:2a brd ff:ff:ff:ff:ff:ff
[root@localhost network-scripts]# backup
[root@localhost network-scripts]# ls
ifcfg-ens33 ifdown-bnep ifdown-ippp ifdown-post ifdown-sit ifdown-tunnel ifup-bnep ifup-ippp ifup-plip ifup-ppp ifup-Team ifup-wireless network-functions-ipv6
ifcfg-lo ifdown-eth ifdown-ipv6 ifdown-ppp ifdown-Team ifup ifup-eth ifup-ipv6 ifup-plusb ifup-routes ifup-TeamPort init.ipv6-global
ifdown ifdown-ib ifdown-isdn ifdown-routes ifdown-TeamPort ifup-aliases ifup-ib ifup-isdn ifup-post ifup-sit ifup-tunnel network-functions
[root@localhost network-scripts]# cat ifcfg-ens33
BOOTPROTO=none
DEFROUTE=yes
NAME=ens33
DEVICE=ens33
ONBOOT=yes
IPADDR=192.168.17.5[root@localhost network-scripts]# vim ifcfg-ens33
[root@localhost network-scripts]# vim ifcfg-ens33
[root@localhost network-scripts]# cat ifcfg-ens33
BOOTPROTO=none
DEFROUTE=yes
NAME=ens33
DEVICE=ens33
ONBOOT=yes
IPADDR=192.168.235.5
GATEWAY=192.168.235.2
DNS1=8.8.8.8[root@localhost network-scripts]# systemctl restart network
[root@localhost network-scripts]# route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 192.168.235.2 0.0.0.0 UG 0 0 0 ens33
169.254.0.0 0.0.0.0 255.255.0.0 U 1002 0 0 ens33
192.168.235.0 0.0.0.0 255.255.255.0 U 0 0 0 ens33
[root@localhost network-scripts]# ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00inet 127.0.0.1/8 scope host lovalid_lft forever preferred_lft foreverinet6 ::1/128 scope host valid_lft forever preferred_lft forever
2: ens33: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000link/ether 00:0c:29:2a:70:8a brd ff:ff:ff:ff:ff:ffinet 192.168.235.5/24 brd 192.168.235.255 scope global ens33valid_lft forever preferred_lft foreverinet6 fe80::20c:29ff:fe2a:708a/64 scope link valid_lft forever preferred_lft forever
3: virbr0: <BROADCAST,MULTICAST> mtu 1500 qdisc noqueue state DOWN group default qlen 1000link/ether 52:54:00:5b:77:d5 brd ff:ff:ff:ff:ff:ff
4: virbr0-nic: <BROADCAST,MULTICAST> mtu 1500 qdisc pfifo_fast master virbr0 state DOWN group default qlen 1000link/ether 52:54:00:5b:77:d5 brd ff:ff:ff:ff:ff:ff
[root@localhost network-scripts]#
配置YUM 源
[root@localhost ~]# yum repolist
已加载插件：fastestmirror, langpacks
Loading mirror speeds from cached hostfile
Could not retrieve mirrorlist http://mirrorlist.centos.org/?release=7&arch=x86_64&repo=os&infra=stock error was
14: curl#6 - "Could not resolve host: mirrorlist.centos.org; 未知的错误"
Loading mirror speeds from cached hostfile
Loading mirror speeds from cached hostfile
Loading mirror speeds from cached hostfile
源标识 源名称 状态
base/7/x86_64 CentOS-7 - Base 0
extras/7/x86_64 CentOS-7 - Extras 0
updates/7/x86_64 CentOS-7 - Updates 0
repolist: 0
[root@localhost ~]# cd /etc/yum.repos.d
[root@localhost yum.repos.d]# ls
CentOS-Base.repo CentOS-Debuginfo.repo CentOS-Media.repo CentOS-Vault.repo
CentOS-CR.repo CentOS-fasttrack.repo CentOS-Sources.repo CentOS-x86_64-kernel.repo
[root@localhost yum.repos.d]# tar -zcf repo.tar.gz *.repo
[root@localhost yum.repos.d]# ls
CentOS-Base.repo CentOS-Debuginfo.repo CentOS-Media.repo CentOS-Vault.repo repo.tar.gz
CentOS-CR.repo CentOS-fasttrack.repo CentOS-Sources.repo CentOS-x86_64-kernel.repo
[root@localhost yum.repos.d]# rm -rf *.repo
[root@localhost yum.repos.d]# ls
repo.tar.gz
[root@localhost yum.repos.d]# rm -rf /mnt/*
[root@localhost yum.repos.d]# mount -o ro /dev/sr0 /mnt
[root@localhost yum.repos.d]# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 20G 0 disk
├─sda1 8:1 0 1G 0 part /boot
└─sda2 8:2 0 19G 0 part├─centos-root 253:0 0 17G 0 lvm /└─centos-swap 253:1 0 2G 0 lvm [SWAP]
sr0 11:0 1 4.4G 0 rom /mnt
[root@localhost yum.repos.d]# chmod +x /etc/rc.local
[root@localhost yum.repos.d]# echo 'mount -o ro /dev/sr0 /mnt'>>/etc/rc.local
[root@localhost yum.repos.d]# jobs
[root@localhost yum.repos.d]# w21:34:39 up 5:21, 4 users, load average: 0.01, 0.03, 0.05
USER TTY FROM LOGIN@ IDLE JCPU PCPU WHAT
caozx26 :0 :0 三03 ?xdm? 4:18 0.18s /usr/libexec/gnome-session-binary --session gnome-classic
caozx26 pts/0 :0 三03 10:07 0.19s 5.74s /usr/libexec/gnome-terminal-server
root pts/1 192.168.17.1 19:58 1:19m 0.02s 0.02s -bash
root pts/2 192.168.235.1 21:27 7.00s 0.09s 0.02s w
[root@localhost yum.repos.d]# vim local.repo
[root@localhost yum.repos.d]# cat local.repo
[local]
name=local yum
baseurl=file:///mnt
gpgcheck=0
enabled=1[root@localhost yum.repos.d]# yum clean all
已加载插件：fastestmirror, langpacks
正在清理软件源： local
Cleaning up list of fastest mirrors
[root@localhost yum.repos.d]# yum makecache
已加载插件：fastestmirror, langpacks
Determining fastest mirrors
local | 3.6 kB 00:00:00
(1/4): local/group_gz | 153 kB 00:00:00
(2/4): local/filelists_db | 3.3 MB 00:00:00
(3/4): local/primary_db | 3.3 MB 00:00:00
(4/4): local/other_db | 1.3 MB 00:00:00
元数据缓存已建立
[root@localhost yum.repos.d]# yum repolist
已加载插件：fastestmirror, langpacks
Loading mirror speeds from cached hostfile
源标识 源名称 状态
local local yum 4,070
repolist: 4,070
[root@localhost yum.repos.d]#
关闭NetworkManager（rsync需要稳定的路由表，特定端口）
526 引用元宝
[root@localhost yum.repos.d]# systemctl stop NetworkManager
[root@localhost yum.repos.d]# systemctl disable NetworkManager
Removed symlink /etc/systemd/system/multi-user.target.wants/NetworkManager.service.
Removed symlink /etc/systemd/system/dbus-org.freedesktop.nm-dispatcher.service.
Removed symlink /etc/systemd/system/network-online.target.wants/NetworkManager-wait-online.service.
[root@localhost yum.repos.d]# systemctl status NetworkManager
● NetworkManager.service - Network ManagerLoaded: loaded (/usr/lib/systemd/system/NetworkManager.service; disabled; vendor preset: enabled)Active: inactive (dead) since 五 2025-05-30 21:41:21 CST; 51min agoDocs: man:NetworkManager(8)Main PID: 905 (code=exited, status=0/SUCCESS)5月 30 21:21:33 localhost.localdomain NetworkManager[905]: <info> [1748611293.0967] manager: NetworkManager state is now CONNECTED_SITE
5月 30 21:21:33 localhost.localdomain NetworkManager[905]: <info> [1748611293.0968] policy: set 'System ens33' (ens33) as defaul...d DNS
5月 30 21:21:33 localhost.localdomain NetworkManager[905]: <info> [1748611293.1292] device (ens33): Activation: successful, devi...ated.
5月 30 21:21:33 localhost.localdomain NetworkManager[905]: <info> [1748611293.1295] manager: NetworkManager state is now CONNECT...LOBAL
5月 30 21:31:14 localhost.localdomain NetworkManager[905]: <info> [1748611874.7661] agent-manager: req[0x5606ed48cb60, :1.140/or...tered
5月 30 21:41:21 localhost.localdomain systemd[1]: Stopping Network Manager...
5月 30 21:41:21 localhost.localdomain NetworkManager[905]: <info> [1748612481.2419] caught SIGTERM, shutting down normally.
5月 30 21:41:21 localhost.localdomain NetworkManager[905]: <info> [1748612481.2713] manager: NetworkManager state is now CONNECTED_SITE
5月 30 21:41:21 localhost.localdomain NetworkManager[905]: <info> [1748612481.3006] exiting (success)
5月 30 21:41:21 localhost.localdomain systemd[1]: Stopped Network Manager.
Hint: Some lines were ellipsized, use -l to show in full.时钟同步
192.168.235.9
[root@localhost yum.repos.d]# ntpdate cn.ntp.org.cn
30 May 22:34:02 ntpdate[64483]: adjust time server 203.107.6.88 offset -0.001874 sec
513参考 rsync环境配置
代码
root@192.168.235.9's password:┌────────────────────────────────────────────────────────────────────┐│ • MobaXterm 20.0 • ││ (SSH client, X-server and networking tools) ││ ││ ➤ SSH session to root@192.168.235.9 ││ • SSH compression : ✘ ││ • SSH-browser : ✔ ││ • X11-forwarding : ✔ (remote display is forwarded through SSH) ││ • DISPLAY : ✔ (automatically set on remote server) ││ ││ ➤ For more info, ctrl+click on help or visit our website │└────────────────────────────────────────────────────────────────────┘Last login: Fri May 30 19:58:37 2025 from 192.168.17.1
[root@localhost ~]# ping 192.168.235.5
PING 192.168.235.5 (192.168.235.5) 56(84) bytes of data.
64 bytes from 192.168.235.5: icmp_seq=1 ttl=64 time=0.573 ms
64 bytes from 192.168.235.5: icmp_seq=2 ttl=64 time=1.43 ms
^C
--- 192.168.235.5 ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 1000ms
rtt min/avg/max/mdev = 0.573/1.003/1.433/0.430 ms
[root@localhost ~]# yum repolist
已加载插件：fastestmirror, langpacks
Loading mirror speeds from cached hostfile
Could not retrieve mirrorlist http://mirrorlist.centos.org/?release=7&arch=x86_64&repo=os&infra=stock error was
14: curl#6 - "Could not resolve host: mirrorlist.centos.org; 未知的错误"
Loading mirror speeds from cached hostfile
Loading mirror speeds from cached hostfile
Loading mirror speeds from cached hostfile
源标识 源名称 状态
base/7/x86_64 CentOS-7 - Base 0
extras/7/x86_64 CentOS-7 - Extras 0
updates/7/x86_64 CentOS-7 - Updates 0
repolist: 0
[root@localhost ~]# cd /etc/yum.repos.d
[root@localhost yum.repos.d]# ls
CentOS-Base.repo CentOS-Debuginfo.repo CentOS-Media.repo CentOS-Vault.repo
CentOS-CR.repo CentOS-fasttrack.repo CentOS-Sources.repo CentOS-x86_64-kernel.repo
[root@localhost yum.repos.d]# tar -zcf repo.tar.gz *.repo
[root@localhost yum.repos.d]# ls
CentOS-Base.repo CentOS-Debuginfo.repo CentOS-Media.repo CentOS-Vault.repo repo.tar.gz
CentOS-CR.repo CentOS-fasttrack.repo CentOS-Sources.repo CentOS-x86_64-kernel.repo
[root@localhost yum.repos.d]# rm -rf *.repo
[root@localhost yum.repos.d]# ls
repo.tar.gz
[root@localhost yum.repos.d]# rm -rf /mnt/*
[root@localhost yum.repos.d]# mount -o ro /dev/sr0 /mnt
[root@localhost yum.repos.d]# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 20G 0 disk
├─sda1 8:1 0 1G 0 part /boot
└─sda2 8:2 0 19G 0 part├─centos-root 253:0 0 17G 0 lvm /└─centos-swap 253:1 0 2G 0 lvm [SWAP]
sr0 11:0 1 4.4G 0 rom /mnt
[root@localhost yum.repos.d]# chmod +x /etc/rc.local
[root@localhost yum.repos.d]# echo 'mount -o ro /dev/sr0 /mnt'>>/etc/rc.local
[root@localhost yum.repos.d]# jobs
[root@localhost yum.repos.d]# w21:34:39 up 5:21, 4 users, load average: 0.01, 0.03, 0.05
USER TTY FROM LOGIN@ IDLE JCPU PCPU WHAT
caozx26 :0 :0 三03 ?xdm? 4:18 0.18s /usr/libexec/gnome-session-binary --session gnome-classic
caozx26 pts/0 :0 三03 10:07 0.19s 5.74s /usr/libexec/gnome-terminal-server
root pts/1 192.168.17.1 19:58 1:19m 0.02s 0.02s -bash
root pts/2 192.168.235.1 21:27 7.00s 0.09s 0.02s w
[root@localhost yum.repos.d]# vim local.repo
[root@localhost yum.repos.d]# cat local.repo
[local]
name=local yum
baseurl=file:///mnt
gpgcheck=0
enabled=1[root@localhost yum.repos.d]# yum clean all
已加载插件：fastestmirror, langpacks
正在清理软件源： local
Cleaning up list of fastest mirrors
[root@localhost yum.repos.d]# yum makecache
已加载插件：fastestmirror, langpacks
Determining fastest mirrors
local | 3.6 kB 00:00:00
(1/4): local/group_gz | 153 kB 00:00:00
(2/4): local/filelists_db | 3.3 MB 00:00:00
(3/4): local/primary_db | 3.3 MB 00:00:00
(4/4): local/other_db | 1.3 MB 00:00:00
元数据缓存已建立
[root@localhost yum.repos.d]# yum repolist
已加载插件：fastestmirror, langpacks
Loading mirror speeds from cached hostfile
源标识 源名称 状态
local local yum 4,070
repolist: 4,070
[root@localhost yum.repos.d]# systemctl stop NetworkManager
[root@localhost yum.repos.d]# systemctl disable NetworkManager
Removed symlink /etc/systemd/system/multi-user.target.wants/NetworkManager.service.
Removed symlink /etc/systemd/system/dbus-org.freedesktop.nm-dispatcher.service.
Removed symlink /etc/systemd/system/network-online.target.wants/NetworkManager-wait-online.service.
[root@localhost yum.repos.d]# systemctl status NetworkManager
● NetworkManager.service - Network ManagerLoaded: loaded (/usr/lib/systemd/system/NetworkManager.service; disabled; vendor preset: enabled)Active: inactive (dead) since 五 2025-05-30 21:41:21 CST; 51min agoDocs: man:NetworkManager(8)Main PID: 905 (code=exited, status=0/SUCCESS)5月 30 21:21:33 localhost.localdomain NetworkManager[905]: <info> [1748611293.0967] manager: NetworkManager state is now CONNECTED_SITE
5月 30 21:21:33 localhost.localdomain NetworkManager[905]: <info> [1748611293.0968] policy: set 'System ens33' (ens33) as defaul...d DNS
5月 30 21:21:33 localhost.localdomain NetworkManager[905]: <info> [1748611293.1292] device (ens33): Activation: successful, devi...ated.
5月 30 21:21:33 localhost.localdomain NetworkManager[905]: <info> [1748611293.1295] manager: NetworkManager state is now CONNECT...LOBAL
5月 30 21:31:14 localhost.localdomain NetworkManager[905]: <info> [1748611874.7661] agent-manager: req[0x5606ed48cb60, :1.140/or...tered
5月 30 21:41:21 localhost.localdomain systemd[1]: Stopping Network Manager...
5月 30 21:41:21 localhost.localdomain NetworkManager[905]: <info> [1748612481.2419] caught SIGTERM, shutting down normally.
5月 30 21:41:21 localhost.localdomain NetworkManager[905]: <info> [1748612481.2713] manager: NetworkManager state is now CONNECTED_SITE
5月 30 21:41:21 localhost.localdomain NetworkManager[905]: <info> [1748612481.3006] exiting (success)
5月 30 21:41:21 localhost.localdomain systemd[1]: Stopped Network Manager.
Hint: Some lines were ellipsized, use -l to show in full.
[root@localhost yum.repos.d]# ntpdate cn.ntp.org.cn
30 May 22:34:02 ntpdate[64483]: adjust time server 203.107.6.88 offset -0.001874 sec
[root@localhost yum.repos.d]# ┌────────────────────────────────────────────────────────────────────┐│ • MobaXterm 20.0 • ││ (SSH client, X-server and networking tools) ││ ││ ➤ SSH session to root@192.168.235.5 ││ • SSH compression : ✘ ││ • SSH-browser : ✔ ││ • X11-forwarding : ✔ (remote display is forwarded through SSH) ││ • DISPLAY : ✔ (automatically set on remote server) ││ ││ ➤ For more info, ctrl+click on help or visit our website │└────────────────────────────────────────────────────────────────────┘Last login: Fri May 30 19:58:03 2025 from 192.168.17.1
[root@code ~]# yum repolist
已加载插件：fastestmirror, langpacks
Loading mirror speeds from cached hostfile
源标识 源名称 状态
local local yum 4,070
repolist: 4,070
[root@code ~]# systemctl status firewalld
● firewalld.service - firewalld - dynamic firewall daemonLoaded: loaded (/usr/lib/systemd/system/firewalld.service; disabled; vendor preset: enabled)Active: inactive (dead)Docs: man:firewalld(1)5月 28 03:47:18 localhost.localdomain systemd[1]: Starting firewalld - dynamic firewall daemon...
5月 28 03:47:19 localhost.localdomain systemd[1]: Started firewalld - dynamic firewall daemon.
5月 28 03:47:19 localhost.localdomain firewalld[821]: WARNING: AllowZoneDrifting is enabled. This is considered an insecure conf...t now.
5月 30 19:58:58 localhost.localdomain systemd[1]: Stopping firewalld - dynamic firewall daemon...
5月 30 19:59:00 localhost.localdomain systemd[1]: Stopped firewalld - dynamic firewall daemon.
Hint: Some lines were ellipsized, use -l to show in full.
[root@code ~]#code
2025年 05月 30日 星期五 21:17:07 CST
[root@localhost network-scripts]# ls
ifcfg-ens33 ifdown-bnep ifdown-ippp ifdown-post ifdown-sit ifdown-tunnel ifup-bnep ifup-ippp ifup-plip ifup-ppp ifup-Team ifup-wireless network-functions-ipv6
ifcfg-lo ifdown-eth ifdown-ipv6 ifdown-ppp ifdown-Team ifup ifup-eth ifup-ipv6 ifup-plusb ifup-routes ifup-TeamPort init.ipv6-global
ifdown ifdown-ib ifdown-isdn ifdown-routes ifdown-TeamPort ifup-aliases ifup-ib ifup-isdn ifup-post ifup-sit ifup-tunnel network-functions
[root@localhost network-scripts]# cat ifcfg-ens33
BOOTPROTO=none
DEFROUTE=yes
DEVICE=ens33
ONBOOT=yes
IPADDR=192.168.17.2
[root@localhost network-scripts]# vim ifcfg-ens33
[root@localhost network-scripts]# cat ifcfg-ens33
BOOTPROTO=none
DEFROUTE=yes
DEVICE=ens33
ONBOOT=yes
IPADDR=192.168.235.9
GATEWAY=192.168.235.2
DNS1=8.8.8.8
[root@localhost network-scripts]# systemctl restart netwrok
Failed to restart netwrok.service: Unit not found.
[root@localhost network-scripts]# systemctl network restart
Unknown operation 'network'.
[root@localhost network-scripts]# systemctl restart network
[root@localhost network-scripts]# route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 192.168.235.2 0.0.0.0 UG 100 0 0 ens33
192.168.235.0 0.0.0.0 255.255.255.0 U 100 0 0 ens33
[root@localhost network-scripts]# ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00inet 127.0.0.1/8 scope host lovalid_lft forever preferred_lft foreverinet6 ::1/128 scope host valid_lft forever preferred_lft forever
2: ens33: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000link/ether 00:0c:29:57:94:60 brd ff:ff:ff:ff:ff:ffinet 192.168.235.9/24 brd 192.168.235.255 scope global noprefixroute ens33valid_lft forever preferred_lft foreverinet6 fe80::20c:29ff:fe57:9460/64 scope link valid_lft forever preferred_lft forever
3: virbr0: <BROADCAST,MULTICAST> mtu 1500 qdisc noqueue state DOWN group default qlen 1000link/ether 52:54:00:3d:30:2a brd ff:ff:ff:ff:ff:ff
4: virbr0-nic: <BROADCAST,MULTICAST> mtu 1500 qdisc pfifo_fast master virbr0 state DOWN group default qlen 1000link/ether 52:54:00:3d:30:2a brd ff:ff:ff:ff:ff:ff
[root@localhost network-scripts]# backup
2025年 05月 30日 星期五 21:21:49 CST
[root@localhost network-scripts]# ls
ifcfg-ens33 ifdown-bnep ifdown-ippp ifdown-post ifdown-sit ifdown-tunnel ifup-bnep ifup-ippp ifup-plip ifup-ppp ifup-Team ifup-wireless network-functions-ipv6
ifcfg-lo ifdown-eth ifdown-ipv6 ifdown-ppp ifdown-Team ifup ifup-eth ifup-ipv6 ifup-plusb ifup-routes ifup-TeamPort init.ipv6-global
ifdown ifdown-ib ifdown-isdn ifdown-routes ifdown-TeamPort ifup-aliases ifup-ib ifup-isdn ifup-post ifup-sit ifup-tunnel network-functions
[root@localhost network-scripts]# cat ifcfg-ens33
BOOTPROTO=none
DEFROUTE=yes
NAME=ens33
DEVICE=ens33
ONBOOT=yes
IPADDR=192.168.17.5[root@localhost network-scripts]# vim ifcfg-ens33
[root@localhost network-scripts]# vim ifcfg-ens33
[root@localhost network-scripts]# cat ifcfg-ens33
BOOTPROTO=none
DEFROUTE=yes
NAME=ens33
DEVICE=ens33
ONBOOT=yes
IPADDR=192.168.235.5
GATEWAY=192.168.235.2
DNS1=8.8.8.8[root@localhost network-scripts]# systemctl restart network
[root@localhost network-scripts]# route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 192.168.235.2 0.0.0.0 UG 0 0 0 ens33
169.254.0.0 0.0.0.0 255.255.0.0 U 1002 0 0 ens33
192.168.235.0 0.0.0.0 255.255.255.0 U 0 0 0 ens33
[root@localhost network-scripts]# ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00inet 127.0.0.1/8 scope host lovalid_lft forever preferred_lft foreverinet6 ::1/128 scope host valid_lft forever preferred_lft forever
2: ens33: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000link/ether 00:0c:29:2a:70:8a brd ff:ff:ff:ff:ff:ffinet 192.168.235.5/24 brd 192.168.235.255 scope global ens33valid_lft forever preferred_lft foreverinet6 fe80::20c:29ff:fe2a:708a/64 scope link valid_lft forever preferred_lft forever
3: virbr0: <BROADCAST,MULTICAST> mtu 1500 qdisc noqueue state DOWN group default qlen 1000link/ether 52:54:00:5b:77:d5 brd ff:ff:ff:ff:ff:ff
4: virbr0-nic: <BROADCAST,MULTICAST> mtu 1500 qdisc pfifo_fast master virbr0 state DOWN group default qlen 1000link/ether 52:54:00:5b:77:d5 brd ff:ff:ff:ff:ff:ff
[root@localhost network-scripts]# 
![[蓝桥杯]约瑟夫环](http://pic.xiahunao.cn/[蓝桥杯]约瑟夫环)
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