Centos7環境下制作kvm模闆

取消網卡自動改名

cat > /etc/sysconfig/grub <<EOF
GRUB_TIMEOUT=5
GRUB_DEFAULT=saved
GRUB_DISABLE_SUBMENU=true
GRUB_TERMINAL_OUTPUT="console"
GRUB_CMDLINE_LINUX="crashkernel=auto rhgb net.ifnames=0 biosdevname=0 quiet"
GRUB_DISABLE_RECOVERY="true"
EOF
grub2-mkconfig -o /boot/grub2/grub.cfg
           

接下來建立一個虛拟機制作模闆

#!/bin/bash
[ ! -d /vmdata ] && mkdir /vmdata
[ ! -d /vmdata/iso ] && mkdir -p /vmdata/iso
dd if=/dev/cdrom of=/vmdata/iso/centos7.iso
qemu-img create /vmdata/template/template_os 10G
qemu-img create /vmdata/template/template_data 10G

virt-install --virt-type kvm --name=template --ram=512 --vcpus=1 --cdrom=/vmdata/iso/centos7.iso --network bridge=br0 --network bridge=br1 --noautoconsole --os-type=linux --os-variant=rhel7 --disk path=/vmdata/template/template_os,bus=virtio,cache=writeback --autostart --graphics vnc,listen=0.0.0.0,password=test1234 --boot cdrom,hd,menu=on --accelerate
           

vnc登入安裝系統，vnc密碼：test1234，不要使用lvm方式安裝，使用标準分區，然後點選自動建立分區安裝

安裝系統完成後對模闆做調整

#!/bin/bash
systemctl disable firewalld #禁用自啟服務
systemctl stop firewalld
systemctl disable NetworkManager #禁用自啟服務
systemctl stop NetworkManager

getenforce #檢視狀态
sed -i 's/SELINUX=enforcing/SELINUX=disabled/' /etc/selinux/config
grep SELINUX=disabled /etc/selinux/config
setenforce  #臨時關閉服務

echo ' * - nofile 100000 ' >>/etc/security/limits.conf

yum -y install wget net-tools
mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup
wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-.repo
hostnamectl --static set-hostname template
cat > /etc/sysconfig/network <<EOF
GATEWAY=.
EOF

cat > /etc/sysconfig/network-scripts/ifcfg-eth0 <<EOF
TYPE=Ethernet
BOOTPROTO=static
NAME=eth0
DEVICE=eth0
ONBOOT=yes
IPADDR=
NETMASK=.
EOF
cat > /etc/sysconfig/network-scripts/ifcfg-eth1 <<EOF
TYPE=Ethernet
BOOTPROTO=static
NAME=eth1
DEVICE=eth1
ONBOOT=yes
IPADDR=
NETMASK=.
EOF
cat > /etc/resolv.conf <<EOF
nameserver .
EOF
cat > /root/set.sh <<EOF
#!/bin/bash
(echo "passwdtemp";sleep ;echo "passwdtemp") | passwd > /dev/null
hostnamectl --static set-hostname vmnametemp
sed -i "s/\/root\/set.sh//g" /etc/rc.d/rc.local
rm $0
reboot
EOF
chmod +x /root/set.sh
chmod +x /etc/rc.d/rc.local
ls -la /root/set.sh
ls -la /etc/rc.d/rc.local
           

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