linux系统镜像制作（Linux制作系统镜像）

在 RHEL 7.3 上面搭建好了 Apache Web 服务，现在想把 RHEL 8.1 系统镜像上传到 Apache Web 根目录，但由于 RHEL 8.1 系统镜像的大小为 7.31 GB，已经超过 4 GB ，通过 rz 无法上传。解决方法是把 RHEL 8.1 系统镜像挂载到 RHEL 7.3 系统上再制作一个新系统镜像，然后把新系统镜像移动到 Apache Web 根目录里面的系统镜像目录即可，也可以先到 Apache Web 根目录里的系统镜像目录再制作新系统镜像，这样就可以省去移动新系统镜像的步骤了。

环境

Red Hat Enterprise Linux Server release 7.3VMware Workstation Pro 14

添加镜像

[root@Jaking ~]# ifconfig ens32: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 inet 192.168.10.10 netmask 255.255.255.0 broadcast 192.168.10.255 inet6 fe80::20c:29ff:fe84:eae5 prefixlen 64 scopeid 0x20 ether 00:0c:29:84:ea:e5 txqueuelen 1000 (Ethernet) RX packets 636 bytes 53068 (51.8 KiB) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 508 bytes 85327 (83.3 KiB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536 inet 127.0.0.1 netmask 255.0.0.0 inet6 ::1 prefixlen 128 scopeid 0x10 loop txqueuelen 1 (Local Loopback) RX packets 4 bytes 340 (340.0 B) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 4 bytes 340 (340.0 B) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 virbr0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500 inet 192.168.122.1 netmask 255.255.255.0 broadcast 192.168.122.255 ether 52:54:00:25:a2:80 txqueuelen 1000 (Ethernet) RX packets 0 bytes 0 (0.0 B) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 0 bytes 0 (0.0 B) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 [root@Jaking ~]# df -h Filesystem Size Used Avail Use% Mounted on /dev/mapper/rhel-root 48G 4.9G 41G 11% / devtmpfs 478M 0 478M 0% /dev tmpfs 489M 0 489M 0% /dev/shm tmpfs 489M 6.7M 482M 2% /run tmpfs 489M 0 489M 0% /sys/fs/cgroup /dev/sr0 3.6G 3.6G 0 100% /media/cdrom /dev/sdd 40G 27G 14G 67% /download /dev/sda2 1014M 145M 870M 15% /boot /dev/mapper/rhel-data 10G 33M 10G 1% /data tmpfs 98M 0 98M 0% /run/user/0 [root@Jaking ~]# ls /dev/sr* /dev/sr0 /dev/sr1 #/dev/sr1为新添加的镜像

制作新系统镜像

切换到 Apache Web 根目录里的系统镜像目录

[root@Jaking ~]# cd /download/系统镜像/ [root@Jaking 系统镜像]# ls CentOS-7.6-x86_64-DVD-1810.iso rhel-server-7.3-x86_64-dvd.iso Windows 7 x64.iso LaoMaoTao.iso ubuntu-18.04.1-desktop-amd64.iso Windows Sever 2008.iso rhel-server-6.5-x86_64-dvd.iso Windows 2003 SP2.iso [root@Jaking 系统镜像]# dd if=/dev/sr1 of=RHEL-8.1.iso 15335424 0 records in 15335424 0 records out 7851737088 bytes (7.9 GB) copied, 174.329 s, 45.0 MB/s

通过Web界面查看新系统镜像

http://192.168.10.10/系统镜像/

下载镜像

用 watch ifstat 实时查看网卡流量

总结

至此，镜像已经制作成功，下载后就能直接使用。

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