安装完美 CentOS7 虚拟机模板

初始化安装

下载最新版 CentOS7 DVD 选择 mini 安装。

网络配置

安装过程中设置了静态网络地址，如下：

[bash]

[root@centos7-tmp ~]# cat /etc/sysconfig/network-scripts/ifcfg-eth0 TYPE=Ethernet BOOTPROTO=none DEFROUTE=yes IPV4_FAILURE_FATAL=no IPV6INIT=no NAME=eth0 DEVICE=eth0 ONBOOT=yes DNS1=192.168.10.1 DOMAIN=xenlab.com IPADDR=192.168.10.8 PREFIX=24 GATEWAY=192.168.10.1 UUID=5fb06bd0-0bb0-7ffb-45f1-d6edd65f3e03

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软件包

Change log:

yum install wget telnet perl perl-devel net-tools kernel-devel
yum install vim-enhanced.x86_64
yum -y install git
yum install acpid
yum install tree
yum install ntp
yum install unzip

Repo 软件更新源

Change log:

初始化安装，添加了个几个国内的源

rpm -Uvh http://rpms.famillecollet.com/enterprise/remi-release-7.rpm

/etc/yum.repo/bk/dvd.repo ；这个是在用 KVM 虚拟机挂 ISO 文件光驱的时候用的，到时候 mount /dev/cdrom /media/dvd , 把该文件方的夫目录中即可使用 iso 文件中的 repos

当前的软件源如下：

[bash]

[root@centos7-tmp ~]# yum repolist Loaded plugins: fastestmirror Repository base is listed more than once in the configuration Repository updates is listed more than once in the configuration Repository extras is listed more than once in the configuration Repository centosplus is listed more than once in the configuration Loading mirror speeds from cached hostfile

base: mirrors.163.com
epel: mirrors.neusoft.edu.cn
extras: mirrors.btte.net
remi-safe: remi.kazukioishi.net
updates: mirrors.btte.net repo id repo name status base/7/x86_64 CentOS-7 - Base 8,652 epel/x86_64 Extra Packages for Enterprise Linux 7 - x86_64 8,022 extras/7/x86_64 CentOS-7 - Extras 128 remi-safe Safe Remi’s RPM repository for Enterprise Linux 7 - x86_64 123 updates/7/x86_64 CentOS-7 - Updates 609 repolist: 17,534 [root@centos7-tmp ~]#

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系统服务配置

Change log:

关闭 SELinux
关闭 NetworkManager
关闭 FirewallD
systemctl enable acpid.service
开启 truned-adm virtual-guest 服务模式
systemctl enable ntpd

[bash]

[root@centos7-tmp tuned]# tuned-adm list Cannot talk to Tuned daemon via DBus. Available profiles:

balanced
blog
latency-performance
network-latency
network-throughput
powersave
throughput-performance
virtual-guest
virtual-host Cannot talk to Tuned daemon via DBus. It seems that tuned daemon is not running, preset profile is not activated. Preset profile: virtual-guest

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模板文件封装

用 sys-unconfig 关机。用 virt-sysprep, virt-sparsify 去除不必要信息，压缩。

[bash]

[root@martin-fedora vm]# ll -h total 12G -rw-r–r– 1 qemu qemu 81G Jun 5 22:36 centos7-tmp.qcow2 -rw-r–r– 1 root root 81G Jun 5 22:34 centos7-tmp.qcow2.bk -rw-r–r– 1 root root 2.9G Jun 5 07:56 rhel66-clone-1.qcow2 -rw-r–r– 1 root root 1.6G Jun 3 15:01 rhel66-clone.qcow2 -rw-r–r– 1 root root 81G Jun 3 13:03 rhel66.qcow2 -rw-r–r–. 1 root root 81G Jun 1 00:59 rhel71.qcow2 [root@martin-fedora vm]# export TMPDIR=/home/martin [root@martin-fedora vm]# virt-sparsify –compress centos7-tmp.qcow2 centos7-tmp-v1.qcow2 Input disk virtual size = 85899345920 bytes (80.0G) Create overlay file in /home/martin to protect source disk … Examine source disk … Fill free space in /dev/centos/root with zero … 100% ⟦▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒⟧ 00:00 Clearing Linux swap on /dev/centos/swap … 100% ⟦▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒⟧ 00:00 Fill free space in /dev/sda1 with zero … Fill free space in volgroup centos with zero … Copy to destination and make sparse …

Sparsify operation completed with no errors. Before deleting the old disk, carefully check that the target disk boots and works correctly. [root@martin-fedora vm]# ll -h total 12G -rw-r–r– 1 qemu qemu 81G Jun 5 22:36 centos7-tmp.qcow2 -rw-r–r– 1 root root 81G Jun 5 22:34 centos7-tmp.qcow2.bk -rw-r–r– 1 root root 520M Jun 5 23:11 centos7-tmp-v1.qcow2 -rw-r–r– 1 root root 2.9G Jun 5 07:56 rhel66-clone-1.qcow2 -rw-r–r– 1 root root 1.6G Jun 3 15:01 rhel66-clone.qcow2 -rw-r–r– 1 root root 81G Jun 3 13:03 rhel66.qcow2 -rw-r–r–. 1 root root 81G Jun 1 00:59 rhel71.qcow2

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yum update -y

2015-07-10 : Done yum updated. 删除了不需要的 Kernel，安装了 unzip, 修改启动过程为直接文字启动。
2015-11.15: update kernel to 7.1, set old kernel 1: package-cleanup –oldkernels –count=1

使用方法

root 密码 martinliu.cn 开机后记得一定要先修改。

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