Remove rkhunter and chkrootkit in favour of unattended-upgrades

This commit is contained in:
Wojciech Kozlowski 2019-11-29 09:11:54 +01:00
parent 500ccfbaed
commit 30c3da234c
3 changed files with 169 additions and 42 deletions

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@ -0,0 +1,2 @@
APT::Periodic::Update-Package-Lists "1";
APT::Periodic::Unattended-Upgrade "1";

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// Unattended-Upgrade::Origins-Pattern controls which packages are
// upgraded.
//
// Lines below have the format format is "keyword=value,...". A
// package will be upgraded only if the values in its metadata match
// all the supplied keywords in a line. (In other words, omitted
// keywords are wild cards.) The keywords originate from the Release
// file, but several aliases are accepted. The accepted keywords are:
// a,archive,suite (eg, "stable")
// c,component (eg, "main", "contrib", "non-free")
// l,label (eg, "Debian", "Debian-Security")
// o,origin (eg, "Debian", "Unofficial Multimedia Packages")
// n,codename (eg, "jessie", "jessie-updates")
// site (eg, "http.debian.net")
// The available values on the system are printed by the command
// "apt-cache policy", and can be debugged by running
// "unattended-upgrades -d" and looking at the log file.
//
// Within lines unattended-upgrades allows 2 macros whose values are
// derived from /etc/debian_version:
// ${distro_id} Installed origin.
// ${distro_codename} Installed codename (eg, "buster")
Unattended-Upgrade::Origins-Pattern {
// Codename based matching:
// This will follow the migration of a release through different
// archives (e.g. from testing to stable and later oldstable).
// Software will be the latest available for the named release,
// but the Debian release itself will not be automatically upgraded.
// "origin=Debian,codename=${distro_codename}-updates";
// "origin=Debian,codename=${distro_codename}-proposed-updates";
"origin=Debian,codename=${distro_codename},label=Debian";
"origin=Debian,codename=${distro_codename},label=Debian-Security";
// Archive or Suite based matching:
// Note that this will silently match a different release after
// migration to the specified archive (e.g. testing becomes the
// new stable).
// "o=Debian,a=stable";
// "o=Debian,a=stable-updates";
// "o=Debian,a=proposed-updates";
// "o=Debian Backports,a=${distro_codename}-backports,l=Debian Backports";
};
// Python regular expressions, matching packages to exclude from upgrading
Unattended-Upgrade::Package-Blacklist {
// The following matches all packages starting with linux-
// "linux-";
// Use $ to explicitely define the end of a package name. Without
// the $, "libc6" would match all of them.
// "libc6$";
// "libc6-dev$";
// "libc6-i686$";
// Special characters need escaping
// "libstdc\+\+6$";
// The following matches packages like xen-system-amd64, xen-utils-4.1,
// xenstore-utils and libxenstore3.0
// "(lib)?xen(store)?";
// For more information about Python regular expressions, see
// https://docs.python.org/3/howto/regex.html
};
// This option allows you to control if on a unclean dpkg exit
// unattended-upgrades will automatically run
// dpkg --force-confold --configure -a
// The default is true, to ensure updates keep getting installed
//Unattended-Upgrade::AutoFixInterruptedDpkg "true";
// Split the upgrade into the smallest possible chunks so that
// they can be interrupted with SIGTERM. This makes the upgrade
// a bit slower but it has the benefit that shutdown while a upgrade
// is running is possible (with a small delay)
//Unattended-Upgrade::MinimalSteps "true";
// Install all updates when the machine is shutting down
// instead of doing it in the background while the machine is running.
// This will (obviously) make shutdown slower.
// Unattended-upgrades increases logind's InhibitDelayMaxSec to 30s.
// This allows more time for unattended-upgrades to shut down gracefully
// or even install a few packages in InstallOnShutdown mode, but is still a
// big step back from the 30 minutes allowed for InstallOnShutdown previously.
// Users enabling InstallOnShutdown mode are advised to increase
// InhibitDelayMaxSec even further, possibly to 30 minutes.
//Unattended-Upgrade::InstallOnShutdown "false";
// Send email to this address for problems or packages upgrades
// If empty or unset then no email is sent, make sure that you
// have a working mail setup on your system. A package that provides
// 'mailx' must be installed. E.g. "user@example.com"
Unattended-Upgrade::Mail "root";
// Set this value to "true" to get emails only on errors. Default
// is to always send a mail if Unattended-Upgrade::Mail is set
//Unattended-Upgrade::MailOnlyOnError "false";
// Remove unused automatically installed kernel-related packages
// (kernel images, kernel headers and kernel version locked tools).
//Unattended-Upgrade::Remove-Unused-Kernel-Packages "true";
// Do automatic removal of newly unused dependencies after the upgrade
//Unattended-Upgrade::Remove-New-Unused-Dependencies "true";
// Do automatic removal of unused packages after the upgrade
// (equivalent to apt-get autoremove)
//Unattended-Upgrade::Remove-Unused-Dependencies "false";
// Automatically reboot *WITHOUT CONFIRMATION* if
// the file /var/run/reboot-required is found after the upgrade
//Unattended-Upgrade::Automatic-Reboot "false";
// Automatically reboot even if there are users currently logged in
// when Unattended-Upgrade::Automatic-Reboot is set to true
//Unattended-Upgrade::Automatic-Reboot-WithUsers "true";
// If automatic reboot is enabled and needed, reboot at the specific
// time instead of immediately
// Default: "now"
//Unattended-Upgrade::Automatic-Reboot-Time "02:00";
// Use apt bandwidth limit feature, this example limits the download
// speed to 70kb/sec
//Acquire::http::Dl-Limit "70";
// Enable logging to syslog. Default is False
// Unattended-Upgrade::SyslogEnable "false";
// Specify syslog facility. Default is daemon
// Unattended-Upgrade::SyslogFacility "daemon";
// Download and install upgrades only on AC power
// (i.e. skip or gracefully stop updates on battery)
// Unattended-Upgrade::OnlyOnACPower "true";
// Download and install upgrades only on non-metered connection
// (i.e. skip or gracefully stop updates on a metered connection)
// Unattended-Upgrade::Skip-Updates-On-Metered-Connections "true";
// Verbose logging
// Unattended-Upgrade::Verbose "false";
// Print debugging information both in unattended-upgrades and
// in unattended-upgrade-shutdown
// Unattended-Upgrade::Debug "false";

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@ -26,6 +26,26 @@
reboot:
when: apt_update is changed
# -------------------------------------------------------------------------
# Ensure unattended upgrades is installed.
# -------------------------------------------------------------------------
- name: Install unattended-upgrades
apt:
name: unattended-upgrades
- name: Configure unattended-upgrades
template:
src: ./etc/apt/apt.conf.d/50unattended-upgrades.j2
dest: /etc/apt/apt.conf.d/50unattended-upgrades
mode: 0644
- name: Enable unattended-upgrades
template:
src: ./etc/apt/apt.conf.d/20auto-upgrades.j2
dest: /etc/apt/apt.conf.d/20auto-upgrades
mode: 0644
# -------------------------------------------------------------------------
# Loki uses SSDs so use fstrim on a timer.
# -------------------------------------------------------------------------
@ -92,7 +112,6 @@
mode: 0644
register: apparmor_cfg
# Once ansible 2.7 is available will be able to just use reboot module.
- block:
- name: Update grub
command: update-grub
@ -302,34 +321,6 @@
auditd is changed or
auditd_cfg is changed
# -------------------------------------------------------------------------
# Chkrootkit and Rkhunter.
# -------------------------------------------------------------------------
- name: Install rkhunter and chkrootkit
apt:
name:
- rkhunter
- chkrootkit
- name: Configure rkhunter
template:
src: ./etc/rkhunter.conf.j2
dest: /etc/rkhunter.conf
mode: 0644
- name: Configure rkhunter
template:
src: ./etc/default/rkhunter.j2
dest: /etc/default/rkhunter
mode: 0644
- name: Configure chkrootkit
template:
src: ./etc/chkrootkit.conf.j2
dest: /etc/chkrootkit.conf
mode: 0644
# -------------------------------------------------------------------------
# Install sudo and user to group.
# -------------------------------------------------------------------------
@ -415,6 +406,7 @@
command: ./update.sh
args:
chdir: "{{ loki_dir }}"
rescue:
- debug:
msg: "Failed to pull containers from registry - will build locally"
@ -459,16 +451,3 @@
src: ./root.bashrc
dest: /root/.bashrc
mode: 0644
# -------------------------------------------------------------------------
# Update rkhunter and chkrootkit databases.
# -------------------------------------------------------------------------
- name: Update rkhunter database
command: rkhunter --propupd
- name: Run chkrootkit
command: /etc/cron.daily/chkrootkit
- name: Update chkrootkit logs
command: cp -a /var/log/chkrootkit/log.today /var/log/chkrootkit/log.expected