openstack-11镜像制作

openstack

openstack-11镜像制作

官方文档 https://docs.openstack.org/image-guide/obtain-images.html#centos
手动制作镜像可参考官方文档 https://docs.openstack.org/image-guide/create-images-manually.html
http://cloud.centos.org/centos/7/images/
http://cloud.centos.org/centos/7/images/CentOS-7-x86_64-GenericCloud-1907.qcow2.xz
文件1907表示2019年7月制作的镜像

wget http://cloud.centos.org/centos/7/images/CentOS-7-x86_64-GenericCloud-1907.qcow2.xz
xz -d CentOS-7-x86_64-GenericCloud-1907.qcow2.xz

file /var/lib/libvirt/images/CentOS-7-x86_64-GenericCloud-1907.qcow2
/var/lib/libvirt/images/CentOS-7-x86_64-GenericCloud-1907.qcow2: QEMU QCOW Image (v2), 8589934592 bytes

virt-install --virt-type kvm --name centos7.6-template --ram 1024 --vcpu 2 --pxe --disk path=/var/lib/libvirt/images/CentOS-7-x86_64-GenericCloud-1907.qcow2 --network bridge=br0 --graphics vnc,listen=0.0.0.0 --noautoconsole

重设密码

yum install libguestfs-tools

virt-customize -a /var/lib/libvirt/images/CentOS-7-x86_64-GenericCloud-1907.qcow2 --root-password password:passwd

或者进入当用户模式更新密码
第一次进入比较慢，主要脚本在/etc/cloud/cloud.cfg，可以关闭一些不需要的东西

vim /etc/cloud/cloud.cfg
users:
 - admin

disable_root: 0
ssh_pwauth:   0

mount_default_fields: [~, ~, 'auto', 'defaults,nofail,x-systemd.requires=cloud-init.service', '0', '2']
resize_rootfs_tmp: /dev
ssh_deletekeys:   0
ssh_genkeytypes:  ~
syslog_fix_perms: ~

cloud_init_modules:
# - disk_setup
# - migrator
# - bootcmd
 - write-files
 - growpart
 - resizefs
# - set_hostname
# - update_hostname
# - update_etc_hosts
# - rsyslog
# - users-groups
# - ssh

#cloud_config_modules:
# - mounts
# - locale
# - set-passwords
# - rh_subscription
# - yum-add-repo
# - package-update-upgrade-install
# - timezone
# - puppet
# - chef
# - salt-minion
# - mcollective
# - disable-ec2-metadata
# - runcmd

#cloud_final_modules:
# - rightscale_userdata
# - scripts-per-once
# - scripts-per-boot
# - scripts-per-instance
# - scripts-user
# - ssh-authkey-fingerprints
# - keys-to-console
# - phone-home
# - final-message
# - power-state-change

#system_info:
#  default_user:
#    name: centos
#    lock_passwd: true
#    gecos: Cloud User
#    groups: [wheel, adm, systemd-journal]
#    sudo: ["ALL=(ALL) NOPASSWD:ALL"]
#    shell: /bin/bash
#  distro: rhel
#  paths:
#    cloud_dir: /var/lib/cloud
#  paths:
#    cloud_dir: /var/lib/cloud
#    templates_dir: /etc/cloud/templates
#  ssh_svcname: sshd

# vim:syntax=yaml

时区

rm -rf /etc/localtime 
ln -sv /usr/share/zoneinfo/Asia/Shanghai /etc/localtime

ssh密码认证打开

PasswordAuthentication yes
systemctl restart sshd

免密钥登录
s

sh-keygen
ssh-copy-id 
[root@controller1 ~]# cat ~/.ssh/id_rsa.pub 
ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDQJolNH4c3QwKLBr//kdOrk25Bc+YnLnk2XeUMLTm4k4oo4Nq/Pjo07tz7/SrXeXU5xjTkyRqerrp1UCIESzZpm7C/nprqriyeBRIzOYnB4TV+iM1EPvxrKtX90KIkzZvys3bAYYKRw/16uiWiVqzVKDD52hVcKdtG5cjAGbaiu+W0jAq3sHqrqQO+fEivPPEXtfx8RsZFzPMmoDq1je/XvDCYuSjzAxM4jYXYtsbQKnouZLaRhFF8QeAEQ/ggLjiV/kTArYuNyMCkUQDt1o/Rx82O1Gr4yQMBUOGgugjufdMXD8c5KPnPZsdzUig1eHUd2uuDUiiM9ljgX/pwdP1r root@controller1
cat .ssh/authorized_keys 
ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDQJolNH4c3QwKLBr//kdOrk25Bc+YnLnk2XeUMLTm4k4oo4Nq/Pjo07tz7/SrXeXU5xjTkyRqerrp1UCIESzZpm7C/nprqriyeBRIzOYnB4TV+iM1EPvxrKtX90KIkzZvys3bAYYKRw/16uiWiVqzVKDD52hVcKdtG5cjAGbaiu+W0jAq3sHqrqQO+fEivPPEXtfx8RsZFzPMmoDq1je/XvDCYuSjzAxM4jYXYtsbQKnouZLaRhFF8QeAEQ/ggLjiV/kTArYuNyMCkUQDt1o/Rx82O1Gr4yQMBUOGgugjufdMXD8c5KPnPZsdzUig1eHUd2uuDUiiM9ljgX/pwdP1r root@controller1

安装常用软件包

yum install -y net-tools vim lrzsz tree screen lsof ntpdate telnet acpid

上传镜像

 source admin-ocata.sh
[root@controller1 ~]# openstack image list
+--------------------------------------+--------+--------+
| ID                                   | Name   | Status |
+--------------------------------------+--------+--------+
| cac9811d-6590-4648-b1a0-6eda2e8e799e | cirros | active |
+--------------------------------------+--------+--------+
[root@controller1 ~]# openstack image create "centos7.6" --file CentOS-7-x86_64-GenericCloud-1907.qcow2 --disk-format qcow2 --container-format bare --public
+------------------+------------------------------------------------------+
| Field            | Value                                                |
+------------------+------------------------------------------------------+
| checksum         | 36ddd39494f1178b083306fe78ff67a8                     |
| container_format | bare                                                 |
| created_at       | 2019-09-17T07:31:59Z                                 |
| disk_format      | qcow2                                                |
| file             | /v2/images/f53e0dd6-b50e-4e7e-aee2-eeefcb89ed65/file |
| id               | f53e0dd6-b50e-4e7e-aee2-eeefcb89ed65                 |
| min_disk         | 0                                                    |
| min_ram          | 0                                                    |
| name             | centos7.6                                            |
| owner            | 14c7c0b953754e0d9f30d4973e3e369d                     |
| protected        | False                                                |
| schema           | /v2/schemas/image                                    |
| size             | 1033109504                                           |
| status           | active                                               |
| tags             |                                                      |
| updated_at       | 2019-09-17T07:33:40Z                                 |
| virtual_size     | None                                                 |
| visibility       | public                                               |
+------------------+------------------------------------------------------+
[root@controller1 ~]# openstack image list
+--------------------------------------+-----------+--------+
| ID                                   | Name      | Status |
+--------------------------------------+-----------+--------+
| f53e0dd6-b50e-4e7e-aee2-eeefcb89ed65 | centos7.6 | active |
| cac9811d-6590-4648-b1a0-6eda2e8e799e | cirros    | active |
+--------------------------------------+-----------+--------+

镜像上传后就可以创建实例