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"description" : "\x3cp\x3eubuntu 18.04 預設移掉了 \/etc\/rc.local 的功能\x3c\/p\x3e\n\n\x3cp\x3e變成要用 systemd 的方式來運作，可是有點難用…\x3c\/p\x3e\n\n\x3cp\x3e紀錄一下步驟，再來研究怎麼整合到 preseed 裡面\x3c\/p\x3e",
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<span class="date">08 April</span> <span> / </span>
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<a href="https://github.com/changchichung" title="Posts by Eric Chang" rel="author">Eric Chang</a>
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<h1 class='entry-title'> [筆記] ubuntu 18.04 preseeds </h1>
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<article>
<p>ubuntu 18.04 預設移掉了 /etc/rc.local 的功能</p>
<p>變成要用 systemd 的方式來運作，可是有點難用…</p>
<p>紀錄一下步驟，再來研究怎麼整合到 preseed 裡面</p>
<h3 id="1-建立-rc-local-service">1. 建立 rc-local.service</h3>
<h4 id="sudo-vi-etc-systemd-system-rc-local-service">sudo vi /etc/systemd/system/rc-local.service</h4>
<pre><code>[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
</code></pre>
<h3 id="2-建立-rc-local-bak">2. 建立 rc.local.bak</h3>
<p>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</p>
<p>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</p>
<p>因此，需要先保留原本的 rc.local</p>
<p>在送出通知信件之後，就用原來的 rc.local 蓋掉修改過的 rc.local</p>
<h4 id="sudo-vi-etc-rc-local-bak">sudo vi /etc/rc.local.bak</h4>
<pre><code>#!/bin/sh -e
#
# rc.local
#
# This script is executed at the end of each multiuser runlevel.
# Make sure that the script will &quot;exit 0&quot; 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
</code></pre>
<h3 id="3-建立-rc-local">3. 建立 rc.local</h3>
<h4 id="sudo-vi-etc-rc-local">sudo vi /etc/rc.local</h4>
<pre><code>#!/bin/sh -e
#
# rc.local
#
# This script is executed at the end of each multiuser runlevel.
# Make sure that the script will &quot;exit 0&quot; 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
</code></pre>
<h3 id="4-修改-rc-local-permission">4. 修改 rc.local permission</h3>
<pre><code>sudo chmod +x /etc/rc.local
</code></pre>
<h3 id="5-啟用-rc-local-service">5. 啟用 rc-local service</h3>
<pre><code>sudo systemctl enable rc-local
</code></pre>
<hr />
<p>ubuntu 18.04 preseeds files</p>
<pre><code># 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 &amp; 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
</code></pre>
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<div class="entry-tags"><p><span>Tags</span>
<a href="/tags/pxe" title="View all posts tagged pxe">pxe</a>
<a href="/tags/preseeds" title="View all posts tagged preseeds">preseeds</a>
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<img alt='Eric Chang' src="https://www.gravatar.com/avatar/23f8ed94e007297499ac8df1641b3ff5?s=100&d=identicon" class='avatar avatar-72 photo' height='72' width='72'>
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Written by:<a href="https://github.com/changchichung" title="Posts by Eric Chang" rel="author">Eric Chang</a> </span>
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