cobbler 服务在 docker 下运行
主要参考 Cobbler 批量装机。
在宿主机上的 /mnt 内挂载镜像。
$ sudo mkdir /mnt/ubuntu18.04
$ sudo mkdir /mnt/centos
$ sudo mount -t iso9660 -r -o ro,loop /tmp/ubuntu-18.04.3-server-amd64.iso /mnt/ubuntu18.04
$ sudo mount -t iso9660 -r -o ro,loop /tmp/CentOS-7-x86_64-DVD-1908.iso /mnt/centos
编辑自动应答脚本 ubuntu1804.seed：
d-i debian-installer/locale string en_US.UTF-8
d-i console-setup/ask_detect boolean false
d-i keyboard-configuration/layoutcode string us
d-i keyboard-configuration/variantcode string
d-i netcfg/choose_interface select auto
d-i netcfg/get_hostname string $myhostname
d-i netcfg/get_nameservers string 192.168.31.1
d-i netcfg/get_ipaddress string
d-i netcfg/get_netmask string 255.255.255.0
d-i netcfg/get_gateway string 192.168.31.1
d-i netcfg/confirm_static boolean true
d-i netcfg/without_default_route boolean true
d-i netcfg/enable boolean false
d-i time/zone string Asia/Shanghai
d-i clock-setup/utc boolean true
d-i clock-setup/ntp boolean true
d-i clock-setup/ntp-server string ntp.ubuntu.com
d-i mirror/country string manual
d-i mirror/http/hostname string $http_server
d-i mirror/http/directory string $install_source_directory
d-i mirror/http/proxy string
d-i live-installer/net-image string http://$http_server/cobbler/links/$distro_name/install/filesystem.squashfs
# d-i partman-auto/disk string /dev/sda
# d-i partman-auto/method string regular
# d-i partman-auto/choose_recipe select fsm
# d-i partman-lvm/device_remove_lvm boolean true
# d-i partman-md/device_remove_md boolean true
# d-i partman-auto/expert_recipe string \
# fsm :: \
# 1024 100% 1024 linux-swap method{ swap } \
# format{ } \
# . \
# 20480 20480 20480 ext4 method{ format } \
# mountpoint{ /tmp } \
# format{ } use_filesystem{ } filesystem{ ext4 } \
# options/relatime{ relatime } \
# . \
# 1 2048 1000000000 ext4 method{ format } \
# mountpoint{ /data } \
# format{ } use_filesystem{ } filesystem{ ext4 } \
# options/relatime{ relatime } \
# .
# d-i partman-lvm/confirm_nooverwrite boolean true
# d-i partman-lvm/confirm boolean true
# d-i partman-partitioning/confirm_write_new_label boolean true
# d-i partman/confirm_nooverwrite boolean true
# d-i partman/confirm boolean true
# d-i partman/choose_partition \
# select Finish partitioning and write changes to disk
d-i passwd/root-login boolean true
d-i passwd/root-password-crypted paddssword $1$root$6lvA6eQ6m1Qum8aZ4VWPV1
d-i passwd/make-user boolean true
d-i passwd/user-fullname string firefly
d-i passwd/username string firefly
d-i passwd/user-password-crypted password $1$firefly$AbmnMjNadI/O7S/2vlojK.
d-i passwd/user-uid string
d-i passwd/user-default-groups string sudo adm cdrom dialout lpadmin plugdev sambashare
d-i user-setup/allow-password-weak boolean false
d-i user-setup/encrypt-home boolean false
d-i apt-setup/services-select multiselect security
d-i apt-setup/security_host string mirrors.aliyun.com
d-i apt-setup/security_path string /ubuntu
d-i debian-installer/allow_unauthenticated string false
$SNIPPET('preseed_apt_repo_config')
d-i pkgsel/include string ntp ssh wget vim
d-i pkgsel/include string vim openssh-server
d-i grub-installer/skip boolean false
d-i lilo-installer/skip boolean false
d-i grub-installer/only_debian boolean true
d-i grub-installer/with_other_os boolean true
d-i finish-install/keep-consoles boolean false
d-i finish-install/reboot_in_progress note
d-i cdrom-detect/eject boolean true
d-i debian-installer/exit/halt boolean false
d-i debian-installer/exit/poweroff boolean false
d-i preseed/early_command string wget -O- \
http://$http_server/cblr/svc/op/script/$what/$name/?script=preseed_early_default | \
/bin/sh -s
d-i preseed/late_command string wget -O /target/etc/apt/sources.list http://$http_server/sources.list ; \
wget -O /target/etc/locale.conf http://$http_server/locale.conf ; \
wget -O /target/etc/default/locale http://$http_server/locale ; \
cd /target ; \
chroot ./ apt-get update
启动虚拟机，并进入。
$ git clone https://github.com/jasonlix5/docker-cobbler.git
$ cd docker-cobbler
$ vi cobbler.env # 修改基本信息
$ vi Dockerfile # yum 增加一个 file 的安装；通过 ADD 添加 自动应答脚本 到 image 里（也可以后面直接进入 docker 里增加
$ docker-compose up -d
$ docker exec -it docker-cobbler_cobbler_1 bash
cobbler import 镜像
$ cobbler import --path=/mnt/ubuntu18.04 --name=ubuntu-18.04.3 --kickstart=/var/lib/cobbler/kickstarts/ubuntu1804.seed --arch=x86_64
$ cobbler import --path=/mnt/centos --name=centos-7 --arch=x86_64
$ cobbler sync
打开虚拟机，设置 pxe 启动，可以自动进入 cobbler 界面，并出现 ubuntu18.04 和 centos 的安装选项。
如果宿主机的 mnt 更新了新的镜像，那么需要重启下 docker-cobbler_cobbler_1 实例。