--- title: "[筆記] ubuntu 18.04 preseeds " date: 2020-04-08T16:20:33+08:00 draft: false noSummary: false categories: ['筆記'] image: https://h.cowbay.org/images/post-default-3.jpg tags: ['pxe','preseeds'] author: "Eric Chang" keywords: - pxe - preseeds --- ubuntu 18.04 預設移掉了 /etc/rc.local 的功能 變成要用 systemd 的方式來運作，可是有點難用… 紀錄一下步驟，再來研究怎麼整合到 preseed 裡面 ### 1. 建立 rc-local.service #### sudo vi /etc/systemd/system/rc-local.service ``` [Unit] Description=/etc/rc.local Compatibility ConditionPathExists=/etc/rc.local [Service] Type=forking ExecStart=/etc/rc.local start TimeoutSec=0 StandardOutput=tty RemainAfterExit=yes SysVStartPriority=99 [Install] WantedBy=multi-user.target ``` ### 2. 建立 rc.local.bak 這個檔案的作用是，我只需要client在PXE 裝完系統後的第一次開機會發通知信件 所以如果一直保留著 /etc/rc.local 的變動，就變成每次開機都會送出信件 因此，需要先保留原本的 rc.local 在送出通知信件之後，就用原來的 rc.local 蓋掉修改過的 rc.local #### sudo vi /etc/rc.local.bak ``` #!/bin/sh -e # # rc.local # # This script is executed at the end of each multiuser runlevel. # Make sure that the script will "exit 0" on success or any other # value on error. # # In order to enable or disable this script just change the execution # bits. # # By default this script does nothing. exit 0 ``` ### 3. 建立 rc.local #### sudo vi /etc/rc.local ``` #!/bin/sh -e # # rc.local # # This script is executed at the end of each multiuser runlevel. # Make sure that the script will "exit 0" on success or any other # value on error. # # In order to enable or disable this script just change the execution # bits. # # By default this script does nothing. hostname|mail -s pxe_install_complete changch@abc.com cp /etc/rc.local.bak /etc/rc.local exit 0 ``` ### 4. 修改 rc.local permission ``` sudo chmod +x /etc/rc.local ``` ### 5. 啟用 rc-local service ``` sudo systemctl enable rc-local ``` --- ubuntu 18.04 preseeds files ``` # Title: Ubuntu 18.04 preseed.cfg # # File: templates/os-ubuntu-1804-amd64-preseed.cfg # modified by Eric , 2019/07 ### Localization # Keyboard selection. # Disable automatic (interactive) keymap detection. #d-i console-setup/ask_detect boolean false d-i keyboard-configuration/xkb-keymap select us d-i console-setup/ask_detect boolean false d-i console-setup/layoutcode string us d-i keyboard-configuration/ask_detect boolean false d-i keyboard-configuration/layoutcode string us # The values can also be preseeded individually for greater flexibility. d-i localechooser/preferred-locale string en_US.UTF-8 d-i localechooser/supported-locales en_US.UTF-8 d-i debian-installer/language string en d-i debian-installer/country string US d-i debian-installer/locale string en_US.UTF-8 d-i localechooser/continentlist string Asia ### Network d-i netcfg/choose_interface select auto ### Mirror settings # If you select ftp, the mirror/country string does not need to be set. d-i mirror/country string manual d-i mirror/http/proxy string {{ proxy_env }} d-i mirror/http/hostname string {{ pxe_preseed_mirror }} d-i mirror/http/directory string /ubuntu d-i mirror/http/mirror select {{ pxe_preseed_mirror }} ### Hostname #d-i netcfg/get_hostname string unassigned-hostname #d-i netcfg/get_domain string unassigned-domain d-i netcfg/get_hostname string ubuntu d-i netcfg/get_domain string abc.com ### account d-i passwd/root-login boolean false d-i passwd/user-fullname string Adminstrator d-i passwd/username string administrator d-i passwd/user-password-crypted password $6$random_salt$VaSwPia0/6XHIicZLTaDceuRo/f9A6V4WazuZF/lhgQOhRJcKPO5yZ/ZxtBWrAhlDZOQ7GI3s4bPr9485Shry. d-i user-setup/allow-password-weak boolean true d-i user-setup/encrypt-home boolean false d-i passwd/user-default-groups string audio cdrom video sudo adm ### Clock & Timezone d-i clock-setup/utc boolean true d-i time/zone string {{ pxe_preseed_timezone }} d-i clock-setup/ntp boolean true #d-i tzconfig/gmt boolean true d-i tzconfig/choose_country_zone/Asia select Taipei d-i tzconfig/choose_country_zone_single boolean true # Disable that annoying WEP key dialog. d-i netcfg/wireless_wep string ubuntu ### Partitioning d-i partman-auto/method string regular d-i partman-lvm/device_remove_lvm boolean true d-i partman-md/device_remove_md boolean true d-i partman-lvm/confirm boolean true d-i partman-lvm/confirm_nooverwrite boolean true d-i partman-auto/choose_recipe select default-disk-layout # Or provide a recipe of your own... d-i partman-auto/expert_recipe string \ default-disk-layout :: \ 10240 20480 -1 ext4 \ $primary{ } $bootable{ } \ method{ format } format{ } \ use_filesystem{ } filesystem{ ext4 } \ label{ root } \ mountpoint{ / } \ . \ 1024 2048 200% linux-swap \ method{ swap } format{ } \ . \ d-i partman/default_filesystem string ext4 d-i partman-partitioning/confirm_write_new_label boolean true d-i partman/choose_partition select finish d-i partman/confirm boolean true d-i partman/confirm_nooverwrite boolean true d-i partman/mount_style select uuid ### Base system installation d-i base-installer/kernel/image string linux-generic ### Apt setup d-i apt-setup/restricted boolean true d-i apt-setup/universe boolean true d-i apt-setup/backports boolean true d-i apt-setup/services-select multiselect security d-i apt-setup/security_host string security.ubuntu.com d-i apt-setup/security_path string /ubuntu # Package selection (tasksel --list-tasks) #tasksel tasksel/first multiselect server, openssh-server tasksel tasksel/first multiselect standard, openssh-server, ubuntu-desktop # Individual packages (python-minimal for Ansible) d-i pkgsel/include string ssh net-tools python2.7 axel curl vim unzip zip apt-file lynx elinks sysstat ntp htop screen apt-transport-https wget curl git rsync postfix mailutils # Update policy d-i pkgsel/upgrade select safe-upgrade d-i pkgsel/update-policy select unattended-upgrades popularity-contest popularity-contest/participate boolean false d-i pkgsel/updatedb boolean true ## postfix preseeding postfix postfix/main_mailer_type select Internet Site postfix postfix/mailname string pxe.abc.com postfix postfix/protocols select ipv4 # Reporting popularity-contest popularity-contest/participate boolean false # Bootloader d-i grub-installer/only_debian boolean true d-i grub-installer/with_other_os boolean true d-i finish-install/keep-consoles boolean true d-i finish-install/reboot_in_progress note d-i cdrom-detect/eject boolean true #### Advanced options d-i preseed/late_command string \ in-target wget --no-proxy http://192.168.1.7/rc-local.service -O /etc/systemd/system/rc-local.service ;\ in-target wget --no-proxy http://192.168.1.7/rc.local.pxe -O /etc/rc.local.pxe ;\ in-target wget --no-proxy http://192.168.1.7/rc.local.bak -O /etc/rc.local.bak ;\ in-target chmod +x /etc/rc.local.pxe ;\ in-target chmod +x /etc/rc.local.bak ;\ in-target cp /etc/rc.local.pxe /etc/rc.local ;\ in-target systemctl enable rc-local ;\ in-target ln -s /usr/bin/python3.6 /usr/bin/python ```