openstack pike + ceph +高可用集成 -- 镜像制作 （十四）

#openstack centos7 镜像制作
#环境配置
#Centos7.4系统
#cpu 4 core
#ram 4 G 
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#配置可以连外网的网络

#关闭防火墙

echo  '关闭selinux、防火墙'
systemctl stop firewalld.service
systemctl disable firewalld.service
firewall-cmd --state
sed -i '/^SELINUX=.*/c SELINUX=disabled' /etc/selinux/config
sed -i 's/^SELINUXTYPE=.*/SELINUXTYPE=disabled/g' /etc/selinux/config
grep --color=auto '^SELINUX' /etc/selinux/config
setenforce 0

#配置yum源

mkdir remark && mv *.repo remark/
curl -o /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
curl -o /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-7.repo
sed -i '/aliyuncs.com/d' /etc/yum.repos.d/*.repo #删除阿里内网地址#
##生成 阿里云源文件

echo "
#阿里源
#
[Aliyun-pike]
name=Aliyun-pike
baseurl=https://mirrors.aliyun.com/centos/$releasever/cloud/$basearch/openstack-pike/
gpgcheck=0
enabled=1
cost=88

[Aliyun-qemu-ev]
name=Aliyun-qemu-ev
baseurl=https://mirrors.aliyun.com/centos/$releasever/virt/$basearch/kvm-common/
https://mirrors.aliyun.com/centos
gpgcheck=0
enabled=1
">/etc/yum.repos.d/ali.repo

 

yum clean all && yum makecache #清理缓存 生成缓存

#升级系统 重启
yum update -y && reboot

#安装KVM环境
 yum install -y libvirt  bridge-utils kvm virt-* qemu-img qemu-kvm-tools

#安装完成后  需要重启一下，有时候 libvirt服务无法启动 
reboot

##查看 libvirt服务是否启动
systemctl status libvirtd
#没起来启动一下
#systemctl start libvirtd
#systemctl enable libvirtd

##创建环境目录
mkdir -p /kvm/img /kvm/iso

#使用上传工具  xftp  scp工具上传系统镜像到 /kvm/iso目录下
#创建KVm虚拟机

########centos7 mini, ks
 kvname=centos7.4
 ksname=centos7.ks
 ISO=CentOS-7-x86_64-Minimal-1708.iso

#####生成 自动化 ks文件

echo "
install
cdrom

text
keyboard us
lang en_US.UTF-8
authconfig --enableshadow --passalgo=sha512
rootpw 123456
skipx
timezone Asia/Shanghai --isUtc
firewall --enabled --port=22:tcp
selinux --disabled
firewall --disabled

#设置网络
bootloader --location=mbr  --driveorder=sda,sdb  #--append="net.ifnames=0 biosdevname=0"
network  --bootproto=dhcp   --onboot=yes --nameserver=8.8.8.8
network  --hostname=CentOS7

#分区
zerombr
clearpart --all --initlabel
#part /boot --asprimary --fstype="ext4" --size=300 --ondrive=sda
#part swap --fstype="swap" --size=2048
part / --asprimary --fstype=xfs --grow --size=1

reboot

#安装的软件包
%packages
%end

%post
# add user
#useradd -g wheel  admin -d/home/admin -m
#echo 123456|passwd admin --stdin
%end 
">/kvm/iso/$ksname

qemu-img create -f qcow2 /kvm/img/$kvname.qcow2 2G  #创建一个镜像文件
 virt-install \
--name $kvname \
--ram 1024 --vcpus 1 \
--os-type linux --os-variant rhel6 --arch=x86_64 \
--network network=default,model=virtio \
--disk path=/kvm/img/$kvname.qcow2,format=qcow2 \
--location /kvm/iso/$ISO \
--console pty,target_type=serial \
--initrd-inject=/kvm/iso/$ksname \
--extra-args="console=ttyS0,115200n8 serial ks=file:/$ksname" \
--graphics none
 
#安装完成后，按键Ctrl + ] 退出kvm虚拟机
 
virsh destroy $kvname #强制关闭电源
cp /kvm/img/$kvname.qcow2{,.bak} #备份
ls -hl /kvm/img/$kvname*
virsh start   $kvname #开启
virsh console $kvname #登录
 
 
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#kvm 虚拟机配置
 
#更改root密码
##echo 123456|passwd root --stdin
 #使用阿里源#
[[ `uname -r` == *el6* ]] && { Ve=6; } || { Ve=7; }
curl -o /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-$Ve.repo
curl -o /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-$Ve.repo
sed -i '/aliyuncs.com/d' /etc/yum.repos.d/*.repo #删除阿里内网地址#
yum clean all
 
#安装
yum install -y acpid cloud-init cloud-utils jq parted qemu-guest-agent
[[ `uname -r` == *el6* ]] && { yum install -y dracut-modules-growroot; }
 
#cloud-int,开启root密码登录#
sed -i 's/disable_root: 1/disable_root: 0/g' /etc/cloud/cloud.cfg
sed -i 's/ssh_pwauth:   0/ssh_pwauth:   1/g' /etc/cloud/cloud.cfg
#sed -i 's/name: centos/name: root/g' /etc/cloud/cloud.cfg
#grub启动项添加console=ttyS0,115200n8,安装kvm时已配置#
echo 'NETWORKING=yes
NOZEROCONF=yes'>/etc/sysconfig/network
 
#ssh配置#
sed  -i 's/^PasswordAu.*$/PasswordAuthentication yes/' /etc/ssh/sshd_config
sed  -i 's/^GSSAPIAuthentication yes/GSSAPIAuthentication no/' /etc/ssh/sshd_config
sed  -i 's/^#UseDNS.*$/UseDNS no/' /etc/ssh/sshd_config
[[ $Ve = 6 ]] && { service sshd restart; } || { systemctl restart sshd; }
 
#开机启动#
[[ $Ve = 6 ]] && {
chkconfig acpid on
chkconfig cloud-init on
chkconfig qemu-ga on
sed -i 's/timeout=5/timeout=2/g' /boot/grub/grub.conf
 } || {
systemctl enable acpid cloud-init qemu-guest-agent
sed -i 's/timeout=5/timeout=2/g' /boot/grub2/grub.cfg
 }
 
##关闭 Centos系统自带NetworkManager 服务

  systemctl stop NetworkManager #临时关闭

  systemctl disable NetworkManager #永久关闭网络管理命令

#根据需求，安装配置其它服务#
#安装 自己的组件环境吧
#######################
 
#清理#
yum clean all
rm -rf /tmp/*
rm -rf /root/*
rm -f /var/log/wtmp /var/log/btmp
>/var/log/cloud-init.log
 
#删除网卡信息#
sed -i '/HWADDR/d' /etc/sysconfig/network-scripts/ifcfg-eth*
sed -i '/UUID/d' /etc/sysconfig/network-scripts/ifcfg-eth*
#>/etc/sysconfig/network-scripts/ifcfg-eth*
>/etc/udev/rules.d/7*.rules
 
#清空历史记录
history -c
 
poweroff #关机
 
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#yum  install libvirt libguestfs-tools
 
#virsh destroy kvm
#显示kvm所有虚拟机
virsh list --all
 
#执行清理任务
virt-sysprep -d $kvname
 
#压缩
#cd /kvm/img/
virt-sparsify --compress $kvname.qcow2 $kvname-cloud.qcow2
ls -hl /kvm/img/$kvname*
 
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# #拷贝镜像
 #前面集成了 ceph  所有上传镜像需要用 raw格式上传
#上传glance镜像
#centos7
openstack image create "centos7.4" \
  --file centos7.4-cloud.qcow2 \
  --disk-format raw --container-format bare \
  --property hw_qemu_guest_agent=yes \
  --public
#

####################################
#kvm还原
 
virsh destroy $kvname
rm -f $kvname.qcow2 $kvname-cloud.qcow2
cp $kvname.qcow2.bak $kvname.qcow2
ls -hl $kvname*
 
virsh start $kvname
virsh console $kvname
 
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