msb/base-stack
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rework for Debian support only, dropping support for Ubuntu

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Matthew Saunders Brown 2024-07-24 13:43:21 -07:00
parent 8a4b0dd0a5
commit e71a4e75e4
2 changed files with 22 additions and 55 deletions
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7
README.md
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@ -1,6 +1,9 @@
# Base Stack
Base Stack installs some basic applications and configs that are common to any server build. Specifically firewald & fail2ban to lock a server down.
Base Stack installs some basic applications and configs that are common to any server build. Specifically automatic updates and firewald with fail2ban for a secure server setup.
## Requirements
A minimal Debian 12 server install with no extra services or packages installed.
## Install
@ -25,5 +28,5 @@ echo "user@example.com" > /root/.forward
```
## License
Copyright (c) 2022 Matthew Saunders Brown <matthewsaundersbrown@gmail.com>\
Copyright (c) 2024 Matthew Saunders Brown <matthewsaundersbrown@gmail.com>\
GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)

70
install.sh
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@ -14,10 +14,10 @@ if [ "${EUID}" -ne 0 ]; then
fi
# do some basic pre-install checks - these are *not* exhaustive
# check for Ubuntu 22.04 (jammy) or Debian 12 (bookworm)
os_codename=`lsb_release -cs`
if [ $os_codename != jammy ] && [ $os_codename != bookworm ]; then
echo "This installer only runs on Ubuntu 22.04 (jammy) or Debian 12 (Bookworm), bailing out."
os_id=`lsb_release -is`
os_release=`lsb_release -rs`
if [ $os_id != Debian ] || [ $os_release != 12 ]; then
echo "This installer only runs on Debian 12 (Bookworm), bailing out."
exit 1
fi
@ -31,18 +31,6 @@ fi
# set webmaster email address, used below
WEBMASTER=webmaster@`hostname -f`
# if policy-rc.d is installed configure it to allow all packages to automatically start/restart/stop after install/upgrade/uninstall
if [[ -f /usr/sbin/policy-rc.d ]]; then
echo -e '#!/bin/sh\nexit 0' > /usr/sbin/policy-rc.d
fi
# set needrestart to list only, which is also default for unattended upgrades
if [[ -f /etc/needrestart/needrestart.conf ]]; then
sed -i "s|^#\$nrconf{restart} = 'i';|\$nrconf{restart} = 'l';|g" /etc/needrestart/needrestart.conf
# 'l' = list only, change to 'a' for automatic restart or 'i' for interactive
# disable kernelhints (no warnings about currently running kernel version)
echo '$nrconf{kernelhints} = 0;' > /etc/needrestart/conf.d/kernelhints.conf
fi
# set system variables
if [[ ! -f /etc/sysctl.d/60-swappiness.conf ]]; then
echo "vm.swappiness = 1" >> /etc/sysctl.d/60-swappiness.conf
@ -52,37 +40,18 @@ fi
# update system
DEBIAN_FRONTEND=noninteractive apt-get -y update
# update grub first, by itself, as it requires special overrides to run unattended
DEBIAN_FRONTEND=noninteractive apt-get -y -o Dpkg::Options::="--force-confdef" -o Dpkg::Options::="--force-confold" install grub-common grub2-common grub-pc grub-pc-bin
DEBIAN_FRONTEND=noninteractive apt-get -y -o Dpkg::Options::="--force-confdef" -o Dpkg::Options::="--force-confold" install grub-common grub2-common
DEBIAN_FRONTEND=noninteractive apt-get -y dist-upgrade
# remove unwanted packages
DEBIAN_FRONTEND=noninteractive apt-get -y purge snapd ufw iptables landscape-common popularity-contest
DEBIAN_FRONTEND=noninteractive apt-get -y purge snapd cryptsetup ufw iptables popularity-contest
DEBIAN_FRONTEND=noninteractive apt-get -y autoremove
systemctl daemon-reload
# disable motd
if [[ -f /etc/default/motd-news ]]; then
sed -i 's|ENABLED=1|ENABLED=0|g' /etc/default/motd-news
fi
if [[ -f /etc/update-motd.d/10-help-text ]]; then
chmod 644 /etc/update-motd.d/10-help-text
fi
# disable apt news
if [[ -x /usr/bin/pro ]]; then
/usr/bin/pro config set apt_news=false
fi
# configure unattended upgrades with automatic reboots
DEBIAN_FRONTEND=noninteractive apt-get -y install unattended-upgrades apt-listchanges
# /etc/apt/apt.conf.d/10periodic is part of update-notifier-common, on Ubuntu only
if [[ -f /etc/apt/apt.conf.d/10periodic ]]; then
sed -i 's|^APT::Periodic::Update-Package-Lists.*|APT::Periodic::Update-Package-Lists "1";|g' /etc/apt/apt.conf.d/10periodic
sed -i 's|^APT::Periodic::Download-Upgradeable-Packages.*|APT::Periodic::Download-Upgradeable-Packages "1";|g' /etc/apt/apt.conf.d/10periodic
sed -i 's|^APT::Periodic::AutocleanInterval.*|APT::Periodic::AutocleanInterval "7";|g' /etc/apt/apt.conf.d/10periodic
fi
sed -i 's|^APT::Periodic::Update-Package-Lists.*|APT::Periodic::Update-Package-Lists "1";|g' /etc/apt/apt.conf.d/20auto-upgrades
sed -i 's|^APT::Periodic::Unattended-Upgrade.*|APT::Periodic::Unattended-Upgrade "1";|g' /etc/apt/apt.conf.d/20auto-upgrades
sed -i 's|// "${distro_id}:${distro_codename}-updates";| "${distro_id}:${distro_codename}-updates";|g' /etc/apt/apt.conf.d/50unattended-upgrades
sed -i 's|// "origin=Debian,codename=${distro_codename}-updates";| "origin=Debian,codename=${distro_codename}-updates";|g' /etc/apt/apt.conf.d/50unattended-upgrades
# sed -i 's|// "origin=Debian,codename=${distro_codename}-proposed-updates";| "origin=Debian,codename=${distro_codename}-proposed-updates";|g' /etc/apt/apt.conf.d/50unattended-upgrades
sed -i 's|//Unattended-Upgrade::Remove-Unused-Kernel-Packages "true";|Unattended-Upgrade::Remove-Unused-Kernel-Packages "true";|g' /etc/apt/apt.conf.d/50unattended-upgrades
sed -i 's|//Unattended-Upgrade::Remove-Unused-Dependencies "false";|Unattended-Upgrade::Remove-Unused-Dependencies "true";|g' /etc/apt/apt.conf.d/50unattended-upgrades
sed -i 's|//Unattended-Upgrade::Automatic-Reboot "false";|Unattended-Upgrade::Automatic-Reboot "true";|g' /etc/apt/apt.conf.d/50unattended-upgrades
@ -90,6 +59,8 @@ sed -i 's|//Unattended-Upgrade::Automatic-Reboot "false";|Unattended-Upgrade::Au
REBOOT_TIME=01:$(printf "%02d" $((0 + RANDOM % 55)))
sed -i "s|//Unattended-Upgrade::Automatic-Reboot-Time \"02:00\";|Unattended-Upgrade::Automatic-Reboot-Time \"$REBOOT_TIME\";|g" /etc/apt/apt.conf.d/50unattended-upgrades
sed -i "s|//Unattended-Upgrade::Mail \"\";|Unattended-Upgrade::Mail \"$WEBMASTER\";|g" /etc/apt/apt.conf.d/50unattended-upgrades
echo unattended-upgrades unattended-upgrades/enable_auto_updates boolean true | debconf-set-selections
dpkg-reconfigure -f noninteractive unattended-upgrades
# firewalld
# without "--no-install-recommends" ipset and ipables are pulled in, and we don't need or want those
@ -123,12 +94,7 @@ cp -a fail2ban/* /etc/fail2ban/
echo "destemail = $WEBMASTER" >> /etc/fail2ban/jail.local
echo "bantime = 24h" >> /etc/fail2ban/jail.d/defaults-debian.conf
echo "maxretry = 3" >> /etc/fail2ban/jail.d/defaults-debian.conf
if [ $os_codename = jammy ]; then
echo "backend = auto" >> /etc/fail2ban/jail.d/defaults-debian.conf
echo "logpath = /var/log/auth.log tail" >> /etc/fail2ban/jail.d/defaults-debian.conf
elif [ $os_codename = bookworm ]; then
echo "backend = systemd" >> /etc/fail2ban/jail.d/defaults-debian.conf
fi
echo "backend = systemd" >> /etc/fail2ban/jail.d/defaults-debian.conf
systemctl enable fail2ban
systemctl start fail2ban
@ -140,16 +106,14 @@ sed -i 's|.*RuntimeMaxFiles=.*|RuntimeMaxFiles=10|g' /etc/systemd/journald.conf
sed -i 's|.*MaxRetentionSec=.*|MaxRetentionSec=1week|g' /etc/systemd/journald.conf
systemctl restart systemd-journald.service
# adjust rsyslogd to log cron to it's own file, and to not include cron or mail in main syslog file (Ubuntu only, not on Debian 12+)
if [[ -f /etc/rsyslog.d/50-default.conf ]]; then
sed -i 's|^#cron\.\*|cron\.\*|' /etc/rsyslog.d/50-default.conf
sed -i 's|^\*\.\*;auth,authpriv\.none|\*\.\*;auth,authpriv\.none;mail\.none;cron\.none|' /etc/rsyslog.d/50-default.conf
systemctl restart rsyslog
fi
# adjust rsyslogd to log cron to it's own file, and to not include cron or mail in main syslog file
# sed -i 's|^#cron\.\*|cron\.\*|' /etc/rsyslog.d/50-default.conf
# sed -i 's|^\*\.\*;auth,authpriv\.none|\*\.\*;auth,authpriv\.none;mail\.none;cron\.none|' /etc/rsyslog.d/50-default.conf
# systemctl restart rsyslog
# install some handy extra packages
DEBIAN_FRONTEND=noninteractive apt-get -y install gdu exa pwgen net-tools curl sudo
# exa will be changed to eza in future releases
DEBIAN_FRONTEND=noninteractive apt-get -y install curl exa gdu git isoquery net-tools pwgen sudo
# exa is no longer maintained, eza is a fork that I expect/hope Debian will add to the next release
# install
chmod 750 sbin/*