背景：业务方需求需要ubuntu 18.4版本的系统
下载ubuntu 18.4wget http://archive.ubuntu.com/ubuntu/dists/bionic/main/installer-amd64/current/images/netboot/mini.iso
通过镜像创建kvm虚拟机（kvm的环境安装不作介绍了，几个yum的事情，前提要在biso开启cpu虚拟化）virt-install --name ubuntu-18.4 --ram 2048 --vcpus=2 --disk path=/vm/vm/ubuntu-18.4/os.img,size=4 --network bridge=br1 --cdrom /vm/iso/ubuntu-mini.iso --vnclisten=192.168.12.84 --vncport=6907 --vnc
通过控制台配置安装
设置ip
配置主机名
添加用户ubuntu
选在openssh server即可
系统安装完成
添加管理key
[email protected]:/home/ubuntu/.ssh# find / -name authorized_keys
/root/.ssh/authorized_keys
/home/ubuntu/.ssh/authorized_keys关闭用户登录，开启key登录
vim /etc/sshd/sshd_config
找到PubkeyAuthentication 改为yes //开启密钥登陆
找到PasswordAuthentication 改为no //关闭密码登陆
关闭防火墙和selinux
[email protected]:~# ufw disable
Firewall stopped and disabled on system startup
[email protected]:~#
[email protected]:~# getenforce
Disabled安装cloud-init包apt install cloud-init -y
设置镜像使用的元数据源，运行 dpkg-reconfigure命令cloud-init。出现提示时，选择EC2数据源：dpkg-reconfigure cloud-init
网络设置dhcp获取
[email protected]:/etc/network# cat /etc/network/interfaces
# ifupdown has been replaced by netplan(5) on this system. See
# /etc/netplan for current configuration.
# To re-enable ifupdown on this system, you can run:
# sudo apt install ifupdown
auto eht0
iface eth0 inet dhcp
[email protected]:/etc/network#关机，清理mac等信息
virt-sysprep -d bionic
查看磁盘格式。我们不用qcow2的格式，使用raw格式，2种的区别可以去google下。
转换磁盘格式
[[email protected]*** ubuntu-18.4]# qemu-img info os.img
image: os.img
file format: qcow2
virtual size: 4.0G (4294967296 bytes)
disk size: 2.2G
cluster_size: 65536
Format specific information:
compat: 1.1
lazy refcounts: true
refcount bits: 16
corrupt: false
[[email protected]*** ubuntu-18.4]# qemu-img convert -f qcow2 -O raw os.img ubuntu-18.4.raw
[[email protected]*** ubuntu-18.4]# qemu-img info ubuntu-18.4.raw
image: ubuntu-18.4.raw
file format: raw
virtual size: 4.0G (4294967296 bytes)
disk size: 2.1G
[[email protected]*** ubuntu-18.4]# 将做好的raw文件上传到openstack控制节点生成镜像。openstack image create "ubuntu-18.04" --file /root/ubuntu-18.4.raw --disk-format raw
web界面已经可以看到这个镜像了
添加完成
[[email protected] ~]# openstack image list
+--------------------------------------+--------------------------------+--------+
| ID | Name | Status |
+--------------------------------------+--------------------------------+--------+
| 0e548332-80a5-4d57-85a5-d4dee50b52fa | centos-7-x86_64-antiy-20190508 | active |
| 2dd5b64b-0b9d-433a-8b64-e1553d704c2c | online | active |
| 099824a6-2081-48a5-b871-740adff8b297 | ubuntu-18.04 | active |
+--------------------------------------+--------------------------------+--------+
[[email protected] ~]#测试：
使用这个镜像创建虚拟机
原文地址：https://blog.51cto.com/7585527/2418466