From e71a4e75e4d1ee6ca4bfef9de05a0849a51be826 Mon Sep 17 00:00:00 2001 From: Matthew Saunders Brown Date: Wed, 24 Jul 2024 13:43:21 -0700 Subject: [PATCH] rework for Debian support only, dropping support for Ubuntu --- README.md | 7 ++++-- install.sh | 70 +++++++++++++----------------------------------------- 2 files changed, 22 insertions(+), 55 deletions(-) diff --git a/README.md b/README.md index 9924ffa..f09eeef 100644 --- a/README.md +++ b/README.md @@ -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 \ +Copyright (c) 2024 Matthew Saunders Brown \ GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt) diff --git a/install.sh b/install.sh index 9272977..c4aa97b 100644 --- a/install.sh +++ b/install.sh @@ -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/*