Update tags and add kernel-cleanup script

This commit is contained in:
Joshua Boniface 2021-02-02 12:34:25 -05:00
parent 1c05c8729f
commit ca3a5e144f
2 changed files with 133 additions and 58 deletions

View File

@ -18,10 +18,12 @@
#
# Remove obsolete issue-gen
#
- name: remove obsolete issue-gen script
- name: remove obsolete issue-gen script from PVC installer
file:
dest: /etc/network/if-up.d/issue-gen
state: absent
when: newhost is defined and newhost
tags: always
#
# Install custom fact scripts
@ -31,6 +33,7 @@
dest: "/etc/ansible/facts.d"
state: directory
recurse: yes
tags: base-ansible
- name: install custom facts
template:
@ -42,22 +45,27 @@
- host_id
- host_group
- dhcp_status
tags: base-ansible
- name: regather facts
setup:
when: installed_facts.changed
tags: base-ansible
- debug:
var: ansible_local.host_group
verbosity: 1
tags: always
- debug:
var: ansible_local.host_id
verbosity: 1
tags: always
- debug:
var: ansible_local.dhcp_status
verbosity: 1
tags: always
#
# Configure APT
@ -71,14 +79,14 @@
- { src: "etc/apt/apt.conf.d/10norecommends.j2", dest: "/etc/apt/apt.conf.d/10norecommends" }
- { src: "etc/apt/preferences.d/pins.j2", dest: "/etc/apt/preferences.d/pins" }
- { src: "etc/apt/sources.list.{{ ansible_machine }}.j2", dest: "/etc/apt/sources.list" }
tags: apt
tags: base-apt
- name: add key for bonilan repo
apt_key:
url: "https://repo.bonifacelabs.net/debian/bonifacelabs_signing_key.pub"
id: "83D07192314835D4"
state: present
tags: apt
tags: base-apt
#
# Safe apt upgrades (on first install only)
@ -87,6 +95,8 @@
- name: apt update
apt:
update-cache: yes
when: newhost is defined and newhost
tags: base-apt
- name: aptitude safe upgrade with autoremove
apt:
@ -94,6 +104,7 @@
autoremove: yes
upgrade: safe
when: newhost is defined and newhost
tags: base-apt
- name: install dbus
apt:
@ -101,12 +112,14 @@
- dbus
state: latest
when: newhost is defined and newhost
tags: base-apt
- name: clean out apt cache
file:
path: "/var/cache/apt/archives"
state: absent
when: newhost is defined and newhost
tags: base-apt
#
# Purge unneeded packages
@ -123,15 +136,13 @@
state: absent
purge: yes
autoremove: yes
#
# Install common packages
#
tags: base-packages
- name: set override debconf selections
shell: 'echo "{{ item }}" | debconf-set-selections'
with_items:
- "wireshark-common wireshark-common/install-setuid boolean true"
tags: base-packages
- name: install common packages (all arch)
apt:
@ -202,6 +213,17 @@
- haveged
- linux-image-amd64
- linux-headers-amd64
tags: base-packages
- name: install cleanup scripts
template:
src: "{{ item.src }}"
dest: "{{ item.dest }}"
mode: 0755
with_items:
- { src: "usr/local/sbin/kernel-cleanup.sh.j2", dest: "/usr/local/sbin/kernel-cleanup.sh" }
- { src: "usr/local/sbin/dpkg-cleanup.sh.j2", dest: "/usr/local/sbin/dpkg-cleanup.sh" }
tags: base-packages
#
# System configuration
@ -212,7 +234,7 @@
template:
src: etc/network/interfaces.j2
dest: /etc/network/interfaces
tags: network
tags: base-network
- name: install per-interface files
template:
@ -221,13 +243,14 @@
with_dict: "{{ networks }}"
loop_control:
loop_var: network
tags: network
tags: base-network
# capabilities
- name: set ping capabilities
capabilities:
path: /bin/ping
capability: cap_net_raw=ep
tags: base-system
# locale
- name: install locale config files
@ -239,6 +262,7 @@
with_items:
- { src: "etc/default/locale.j2", dest: "/etc/default/locale" }
- { src: "etc/locale.gen.j2", dest: "/etc/locale.gen" }
tags: base-system
- name: set timezone
file:
@ -246,6 +270,30 @@
dest: /etc/localtime
state: link
force: yes
tags: base-system
# sysctl
- name: install sysctl tweaks
template:
src: "{{ item.src }}"
dest: "{{ item.dest }}"
with_items:
- { src: "etc/sysctl.d/pvc.conf.j2", dest: "/etc/sysctl.d/pvc.conf" }
tags: base-system
- name: activate sysctl tweaks
shell: "sysctl -p {{ item }}"
with_items:
- /etc/sysctl.d/pvc.conf
tags: base-system
# sudo
- name: write the sudoers file
template:
src: "etc/sudoers.j2"
dest: "/etc/sudoers"
mode: 0440
tags: base-system
# dns
- name: write the hosts config
@ -254,29 +302,16 @@
dest: "{{ item.dest }}"
with_items:
- { src: "etc/hosts.j2", dest: "/etc/hosts" }
tags: dns
tags: base-dns
- name: write the resolver configs
template:
src: "{{ item.src }}"
dest: "{{ item.dest }}"
with_items:
- { src: "etc/dhcp/dhclient-enter-hooks.d/noresolv.j2", dest: "/etc/dhcp/dhclient-enter-hooks.d/noresolv" }
- { src: "etc/resolv.conf.j2", dest: "/etc/resolv.conf" }
tags: dns
# acpi
- name: install sysctl tweaks
template:
src: "{{ item.src }}"
dest: "{{ item.dest }}"
with_items:
- { src: "etc/sysctl.d/pvc.conf.j2", dest: "/etc/sysctl.d/pvc.conf" }
- name: activate sysctl tweaks
shell: "sysctl -p {{ item }}"
with_items:
- /etc/sysctl.d/pvc.conf
- { src: "etc/dhcp/dhclient-enter-hooks.d/noresolv.j2", dest: "/etc/dhcp/dhclient-enter-hooks.d/noresolv" }
tags: base-dns
# syslog
- name: install rsyslog and logrotate configs
@ -288,7 +323,7 @@
with_items:
- { src: "etc/rsyslog.conf.j2", dest: "/etc/rsyslog.conf" }
- { src: "etc/logrotate.d/rsyslog.j2", dest: "/etc/logrotate.d/rsyslog" }
tags: rsyslog
tags: base-syslog
- name: set journalctl persistence
template:
@ -297,7 +332,7 @@
mode: 0644
with_items:
- { src: "etc/systemd/journald.conf.j2", dest: "/etc/systemd/journald.conf" }
tags: rsyslog
tags: base-syslog
# cron
- name: install crontab
@ -307,6 +342,7 @@
mode: 0755
with_items:
- { src: "etc/crontab.j2", dest: "/etc/crontab" }
tags: base-cron
# mta
- name: install postfix generic config
@ -315,15 +351,14 @@
dest: "/etc/postfix/main.cf"
notify:
- restart postfix
tags: base-mta
- name: touch the postfix aliases file
file:
dest: /etc/postfix/aliases
state: touch
tags: base-mta
#
# Local alias maps
#
- name: install local alias maps for various users
lineinfile:
dest: "/etc/aliases"
@ -337,6 +372,7 @@
- clamav
notify:
- newaliases
tags: base-mta
# ntp
- name: write the NTP config file
@ -347,23 +383,26 @@
- restart ntp
with_items:
- { src: "etc/ntp.conf.j2", dest: "/etc/ntp.conf" }
tags: ntp
tags: base-time
# ssl
- name: ensure haveged is running
service:
name: haveged
state: started
tags: base-ssl
- name: generate diffie-hellman parameters
command: openssl dhparam -out /etc/ssl/dhparams.pem 2048
args:
creates: /etc/ssl/dhparams.pem
tags: base-ssl
- name: correct permissions on dhparams
file:
dest: /etc/ssl/dhparams.pem
mode: 0440
tags: base-ssl
# ssh
- name: write the sshd_config files
@ -377,13 +416,13 @@
- { src: 'etc/ssh/sshd_config.j2', dest: '/etc/ssh/sshd_config' }
- { src: 'etc/ssh/shosts.equiv.j2', dest: '/etc/ssh/shosts.equiv' }
- { src: 'etc/ssh/ssh_known_hosts.j2', dest: '/etc/ssh/ssh_known_hosts' }
tags: ssh
tags: base-ssh
- name: write sshd pam.d config
template:
src: "etc/pam.d/sshd.j2"
dest: "/etc/pam.d/sshd"
tags: ssh
tags: base-ssh
- name: remove unneeded SSH keys (leave only RSA and ED25519)
file:
@ -396,7 +435,7 @@
- /etc/ssh/ssh_host_ecdsa_key.pub
notify:
- restart ssh
tags: ssh
tags: base-ssh
- name: set permissions on rsa and ed25519 host keys (just in case they're wrong)
file:
@ -407,20 +446,14 @@
- { name: 'ssh_host_rsa_key.pub', mode: '644' }
- { name: 'ssh_host_ed25519_key', mode: '600' }
- { name: 'ssh_host_ed25519_key.pub', mode: '644' }
tags: ssh
# sudo
- name: write the sudoers file
template:
src: "etc/sudoers.j2"
dest: "/etc/sudoers"
mode: 0440
tags: base-ssh
# bash
- name: write the bash.bashrc config file
template:
src: "etc/bash.bashrc.j2"
dest: "/etc/bash.bashrc"
tags: base-shell
# motd
- name: ensure update-motd and profile.d scripts are present
@ -432,7 +465,7 @@
- { src: "usr/local/sbin/update-motd.sh.j2", dest: "/usr/local/sbin/update-motd.sh" }
- { src: "etc/profile.d/w.sh.j2", dest: "/etc/profile.d/w.sh" }
- { src: "etc/profile.d/pvc.sh.j2", dest: "/etc/profile.d/zzz_pvc.sh" }
tags: motd
tags: base-shell
- name: install update-motd crontab
template:
@ -441,23 +474,13 @@
mode: 0644
with_items:
- { src: "etc/cron.d/update-motd.j2", dest: "/etc/cron.d/update-motd" }
tags: motd
tags: base-shell
- name: ensure /etc/motd is absent
file:
dest: "/etc/motd"
state: absent
tags: motd
# dpkg
- name: install dpkg-cleanup script
template:
src: "{{ item.src }}"
dest: "{{ item.dest }}"
mode: 0755
with_items:
- { src: "usr/local/sbin/dpkg-cleanup.sh.j2", dest: "/usr/local/sbin/dpkg-cleanup.sh" }
tags: dpkg
tags: base-shell
# fail2ban
- name: install fail2ban configurations
@ -471,7 +494,7 @@
- { src: "etc/fail2ban/filter.d/sshd.conf.j2", dest: "/etc/fail2ban/filter.d/sshd.conf" }
- { src: "etc/fail2ban/jail.d/sshd.conf.j2", dest: "/etc/fail2ban/jail.d/sshd.conf" }
- { src: "etc/fail2ban/jail.d/sshd.local.j2", dest: "/etc/fail2ban/jail.d/sshd.local" }
tags: fail2ban
tags: base-fail2ban
# check-mk-agent
- name: install check_mk agent plugins
@ -487,7 +510,7 @@
- freshness
- kernelversion
- ownership
tags: check-mk-agent
tags: base-cmkagent
#
# Configure users
@ -734,7 +757,7 @@
- name: create vimdir
file:
state: directory
dest: /var/home/{{ item.name }}/.vim
dest: /var/home/{{ item.name }}/.vim
owner: "{{ item.name }}"
group: operator
mode: 0700
@ -756,5 +779,6 @@
- postfix
- ntp
- ssh
tags: base-services
- meta: flush_handlers

View File

@ -0,0 +1,51 @@
#!/bin/bash
# kernel-cleanup.sh - Remove obsolete packages and config files
# {{ ansible_managed }}
# Determine the active running kernel
RUNNING_KERNEL="$( uname -v | awk '{ print $4 }' )"
# Determine the list of installed kernels (latest is always last)
INSTALLED_KERNELS=( $( dpkg -l | grep 'linux-image-[0-9]' | awk '{ print $3 }' ) )
NUM_INSTALLED=${{ '{#' }}INSTALLED_KERNELS[@]}
if [[ ${NUM_INSTALLED} -le 1 ]]; then
echo "A single kernel is installed, aborting cleanly."
exit 0
fi
LATEST_KERNEL="${INSTALLED_KERNELS[-1]}"
if [[ ${LATEST_KERNEL} == ${RUNNING_KERNEL} ]]; then
force="--allow-remove-essential"
else
force=""
fi
# Remove the latest kernel from the array
NUM_REMOVABLE=$(( ${NUM_INSTALLED} - 1 ))
REMOVABLE_KERNELS=( ${INSTALLED_KERNELS[@]:0:${NUM_REMOVABLE}} )
PURGE_PACKAGES=()
for KERNEL in ${REMOVABLE_KERNELS[@]}; do
PURGE_PACKAGES+=( $( dpkg -l | grep ${KERNEL} | awk '{ print $2 }' ) )
done
# Override the "linux-check-removal" script
mv /usr/bin/linux-check-removal /usr/bin/linux-check-removal.orig
echo -e '#!/bin/sh\necho "Overriding default linux-check-removal script!"\nexit 0' > /usr/bin/linux-check-removal
chmod +x /usr/bin/linux-check-removal
# Remove the packages
echo "Removing: ${PURGE_PACKAGES[@]}"
apt-get purge --yes ${force} ${PURGE_PACKAGES[@]}
# Restore the "linux-check-removal" script
mv /usr/bin/linux-check-removal.orig /usr/bin/linux-check-removal
# Make sure there is still a valid kernel installed (just in case something broke)
if [[ $( dpkg -l | grep 'linux-image-[0-9]' | wc -l ) -lt 1 ]]; then
echo "WARNING: NO KERNEL IS INSTALLED. THROWING ERROR AND ABORTING."
exit 1
fi
exit 0