InComm: Roles to Handlers: Debian done

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+---
+# You may want to change the default to your favourite host (group) you run this on the most.
+- hosts: "{{ runtime_hosts | default('CHANGE_ME') }}"
+  order: inventory
+  gather_facts: false
+  # default: all in first step, but that shit requires (int)
+  serial: 666
+  tasks:
+  - name: Gather necessary facts
+    setup:
+      filter: "ansible_distribution*"
+  - name: Set up Red Hat and derivatives
+    debug:
+      msg: "System is {{ansible_distribution}} {{ansible_distribution_version}}, checking in."
+    when: ansible_distribution_file_variety == "RedHat"
+    changed_when: true
+    notify: "redhat upd"
+  - name: Set up Debian and derivatives
+    debug:
+      msg: "System is {{ansible_distribution}} {{ansible_distribution_version}}, checking in."
+    when: ansible_distribution_file_variety == "Debian"
+    changed_when: true
+    notify: "debian upd"
+  - name: Set up SUSE and derivatives
+    debug:
+      msg: "System is {{ansible_distribution}} {{ansible_distribution_version}}, checking in."
+    # SuSE was "renamed" to SUSE somewhen around SLES 11 (now SLE :-} ), so we'll check for both. Even though generation 11
+    # repositories should be pretty ...deaddish by now.
+    when: ansible_distribution_file_variety == "SUSE" or ansible_distribution_file_variety == "SuSE"
+    changed_when: true
+    notify: "suse upd"
+  - name: Set up Arch and derivatives
+    debug:
+      msg: "System is {{ansible_distribution}} ({{ansible_distribution_file_variety}}), checking in."
+    when: ansible_distribution_file_variety == "Archlinux"
+    changed_when: true
+    notify: "arch upd"
+  handlers:
+  - name: Update yum/dnf cache (RHEL)
+    # We want to see a dedicated failure if the repos cannot be fetched already.
+    # Cheating here: yum wants a "state" statement to be placed before it takes action, and then - other than stated in the docs -
+    # we can trigger an action containing update_cache without "name" being mandatory. So we will have no package present with
+    # updated cache :-)
+    yum:
+      state: present
+      update_cache: "yes"
+      validate_certs: "yes"
+    become: true
+    listen: "redhat upd"
+  - name: Update repository cache (Debian)
+    apt:
+      update_cache: "yes"
+    become: true
+    listen: "debian upd"
+  - name: Update repository cache (Arch)
+    pacman:
+      update_cache: "yes"
+    become: true
+    listen: "arch upd"
+  - name: Check for upgrades (RHEL)
+    # yum check-upgrade would normally throw an RC 100 if updates are available.
+    # But through ansible: RC0! Weeeee
+    shell: /usr/bin/yum -q -C check-upgrade 2>/dev/null | wc -l
+    args:
+      warn: false
+    register: yue
+    changed_when: yue.stdout|int > 1
+    become: true
+    listen: "redhat upd"
+    notify:
+      - "redhat updates available"
+      - "rkhunter"
+  - name: Check for upgrades (Debian)
+    shell:
+      cmd: apt list --upgradable 2>/dev/null | grep -v ^Listing | wc -l
+    # ZWEI GEKREUZTE HÄMMER UND EIN GROSSES W
+    register: aue
+    # apt will throw an error because it doesn't like piping yet.
+    # for our purposes, however, everything has already been sufficiently implemented.
+    failed_when: false
+    changed_when: aue.stdout|int > 0
+    notify:
+      - "debian updates available"
+      - "rkhunter"
+    listen: "debian upd"
+  - name: Check for upgrades (Arch)
+    # TODO: pikaur
+    shell: /usr/bin/pacman -Qu
+    become: true
+    register: pue
+    failed_when: pue.rc|int > 1
+    changed_when: pue.rc|int == 0
+    notify:
+      - "arch updates available"
+      - "rkhunter"
+    listen: "arch upd"
+  - name: Check for existence of rkhunter
+    stat:
+      path: /usr/bin/rkhunter
+    register: rkhex
+    ignore_errors: true
+    no_log: true
+    # yum always tosses this arbitrary extra line at you, a simple tr -s does not eradicate it, so - well,
+    # 0 and 1 are fine. As explained above, the RC is worthless when run through ansible.
+    listen: "rkhunter"
+    changed_when:
+      - rkhex.stat is defined
+      - rkhex.stat.executable is defined
+      - rkhex.stat.executable == true
+    notify: "rkhunter execution"
+  - name: rkhunter pre-check
+    shell: rkhunter -c --sk --rwo --ns
+    become: true
+    no_log: true
+    listen: "rkhunter execution"
+  - name: Upgrade all installed packages (RHEL)
+    yum:
+      name: '*'
+      state: latest
+      validate_certs: "yes"
+      skip_broken: "yes"
+    become: true
+    listen: "redhat updates available"
+  # Auto-removal is broken and will nuke packages we previously selected through e.g. ansible.
+  # See ansible issue #60349. Leaving commented out. -- pff
+  # - name: Auto-removal of orphaned dependencies (RHEL)
+  #   yum:
+  #     autoremove: "yes"
+  #   when: (ansible_distribution_file_variety == "RedHat") or (ansible_distribution == "Red Hat Enterprise Linux") or (ansible_distribution == "CentOS")
+  - name: Register requirement for reboot (RHEL)
+    command: needs-restarting -r
+    ignore_errors: "yes"
+    register: nr
+    changed_when: "nr.rc > 0"
+    failed_when: false
+    notify: "Reboot if required"
+    become: true
+    # we listen to "redhat upd" here in case a previous reboot was not executed. If undesired, change to "redhat updates available".
+    listen: "redhat upd"
+  - name: Clean packages cache (Debian)
+    command: apt clean
+    become: true
+    listen: "debian upd"
+  - name: Upgrade packages (Debian)
+    apt:
+      upgrade: dist
+    become: true
+    listen: "debian updates available"
+  - name: Remove dependencies that are no longer required (Debian)
+    apt:
+      autoremove: "yes"
+      purge: "yes"
+    become: true
+    # we listen to "debian upd" here in case a previous cleanup was skipped. Change to "debian updates available" if undesired.
+    listen: "debian upd"
+#  - name: Check for existence of needrestart (Debian)
+#    stat:
+#      path: /usr/sbin/needrestart
+#    register: nrex
+#    ignore_errors: "yes"
+#    no_log: true
+#    failed_when: false
+#    changed_when:
+#      - nrex.stat.exists == true
+#      - nrex.stat.executable == true
+#    # we listen to "debian upd" here in case a previous reboot was not executed. If undesired, change to "debian updates available".
+#    notify: "debian needrestart"
+#    listen: "debian upd"
+#  - name: Check for outdated kernel (Debian)
+#    shell: /usr/sbin/needrestart -pk
+#    register: kernout
+#    when:
+#      - nrex.stat.exists == true
+#      - nrex.stat.executable == true
+#    become: true
+#    changed_when: "kernout.rc|int == 1"
+#    listen: "debian needrestart"
+#    notify: "Reboot if required"
+#    # failed_when necessary to have a change for RC 1 instead of a failure
+#    failed_when: kernout.rc > 1
+  - name: Upgrade packages (Arch)
+    pacman:
+      # DO NOT RUN payman -Sy instead of pacman -Syu, i.e. avoid partial upgrades:
+      update_cache: "yes"
+      upgrade: "yes"
+    become: true
+    listen: "arch updates available"
+  - name: Check for existence of needrestart (Debian, Arch)
+    stat:
+      path: /usr/sbin/needrestart
+    register: nrex
+    ignore_errors: "yes"
+    no_log: true
+    failed_when: false
+    changed_when:
+      - nrex.stat.exists == true
+      - nrex.stat.executable == true
+    # we listen to "debian upd" here in case a previous reboot was not executed. If undesired, change to "debian updates available".
+    notify:
+      - "debian arch needrestart"
+    listen:
+      - "debian upd"
+      - "arch upd"
+  - name: Check for outdated kernel (Debian, Arch)
+    shell: /usr/sbin/needrestart -pk
+    register: kernout
+    when:
+      - nrex.stat.exists == true
+      - nrex.stat.executable == true
+    become: true
+    changed_when: "kernout.rc|int == 1"
+    listen: "debian arch needrestart"
+    notify: "Reboot if required"
+    # failed_when necessary to have a change for RC 1 instead of a failure
+    failed_when: kernout.rc > 2
+  - name: Check for outdated services (Debian, Arch)
+    shell: /usr/sbin/needrestart -pl
+    register: svcout
+    when:
+      - nrex.stat.exists == true
+      - nrex.stat.executable == true
+    become: true
+    changed_when: "svcout.rc|int == 1"
+    listen: "debian arch needrestart"
+    # we'll play it safe here: outdated services? --> reboot.
+    notify: "Reboot if required"
+    # failed_when necessary to have a change for RC 1 instead of a failure
+    failed_when: svcout.rc > 2
+  - name: Update zypper cache (SUSE)
+    # we cannot cheat like we did with yum: we need to update any package to refresh the cache with the zypper module. Hence falling back
+    # to shell.
+    shell: |
+      zypper refs && zypper ref
+    become: true
+    listen: "suse upd"
+  - name: Verify Zypper repository availability
+    # Now, here's the thing with zypper. If you have a dead repository, you need to face the following facts:
+    # 1. All output goes to stdout. For zypper lu at least on SLE12/openSUSE42 and earlier, this is:
+    #    - The packages available for update
+    #    - Debug output lik "loading repository data..." and "reading installed packages..."
+    #      (could be silenced with -q, but without RC feedback we need the debug strings again, kek.)
+    #    - WARNING(!!) messages
+    #    ... there is no STDERR.
+    # 2. There is no return code other than 0 for warnings.
+    # Great. Interaction with automatisms as if that stuff came directly from Redmond.
+    # So we need to parse the fucking output string in ansible. Let's start with the "repository not available" warnings.
+    debug:
+      msg: "Dead repositories existing and no update present, we consider this a failure."
+    when:
+      - zypperlu is search("Repository.*appears to be outdated")
+      - zypperlu is search("No updates found")
+    listen: "zypperlu"
+    failed_when: true
+  - name: Update all packages (SUSE)
+    # we could narrow this down via type:patch, but that's about all. So fire away.
+    zypper:
+      name: '*'
+      state: latest
+    become: true
+    # TODO: suse not productive yet, so we choose an arbitrary listener here. Change to something meaningful when going to production.
+    listen: "suse upd"
+  - name: Register requirement for reboot (SUSE)
+    # change in paradigm: we will now use "needs-rebooting", suse implemented that somewhere between 12 and 15, instead of "ps -sss"
+    # shell: zypper ps -sss
+    # todo: what to do if services require a refork?
+    # shell: zypper ps -sss
+    shell: zypper needs-rebooting
+    args:
+      warn: false
+    register: zyppout
+    changed_when: zyppout.rc == 102
+    failed_when: zyppout.rc != 102 and zyppout.rc != 0
+    notify: "Reboot if required"
+    # we listen to "suse upd" here in case a previous reboot was skipped. Change to "suse updates available" if undesired.
+    listen: "suse upd"
+  - name: Clean packages cache (RHEL)
+    # ansible's yum module does not have a dedicated action for this. So shell it is.
+    # CAUTION: This will only work as long as modern RHEL derivatives (RHEL/CentOS >=8, Fedora >=30) will have yum available as pseudo-alias to dnf.
+    # Also, despite yum not offering this feature, ansible will warn that there is a yum module and we should consider using it. Turning warnings off.
+    args:
+      warn: false
+    shell: yum clean packages
+    become: true
+    # we listen to "redhat upd" here in case a previous cleanup was skipped. Change to "redhat updates available" if undesired.
+    listen: "redhat upd"
+  - name: Clean apt cache (Debian)
+    # ansible's apt module does not have a dedicated action for this yet. So shell it is:
+    shell: apt clean
+    become: true
+    # here, we already listen to "debian updates available" already since we already did a more generic cleanup above (unless narrowed down as well)
+    listen: "debian updates available"
+  - name: Clean packages cache (SUSE)
+    # ansible's zypper module does not have a dedicated action for this yet. So shell it is:
+    shell: zypper clean
+    become: true
+    # we listen to "suse upd" here in case a previous cleanup was skipped. Change to "suse updates available" if undesired.
+    listen: "suse upd"
+  - name: rkhunter properties update
+    command: rkhunter --propupd --rwo --ns
+    become: true
+    listen: "rkhunter execution"
+  - name: Reboot if required
+    # ignore_errors: yes
+    reboot:
+      reboot_timeout: 300
+      pre_reboot_delay: 5
+      test_command: uptime
+      reboot_command: "/bin/systemctl reboot"
+    become: true