From 1b775762d1e3fa2f903d4422e76b05ebdd204bcb Mon Sep 17 00:00:00 2001
From: Stefan Haun <tux@netz39.de>
Date: Wed, 3 Jan 2024 20:22:44 +0100
Subject: [PATCH 1/8] Remove grafana vars from hobbes config

---
 host_vars/hobbes.n39.eu/vars.yml |  5 -----
 host_vars/hobbes.n39.eu/vault    | 13 +++++--------
 2 files changed, 5 insertions(+), 13 deletions(-)

diff --git a/host_vars/hobbes.n39.eu/vars.yml b/host_vars/hobbes.n39.eu/vars.yml
index 2b64fb3..e576735 100644
--- a/host_vars/hobbes.n39.eu/vars.yml
+++ b/host_vars/hobbes.n39.eu/vars.yml
@@ -2,8 +2,3 @@
 server_admin: "admin+hobbes@netz39.de"
 mac: "b8:27:eb:f9:43:43"
 kiosk_user: pi
-kiosk_software_version: v1.0.6
-kiosk_software_arch: "armv7"
-kiosk_url: "https://grafana.n39.eu/d/xpLj6UD4z/hobbes-space-monitor?orgId=1"
-kiosk_grafana_user: "{{ vault_kiosk_grafana_user }}"
-kiosk_grafana_pass: "{{ vault_kiosk_grafana_pass }}"
diff --git a/host_vars/hobbes.n39.eu/vault b/host_vars/hobbes.n39.eu/vault
index 5f4b386..6c9a336 100644
--- a/host_vars/hobbes.n39.eu/vault
+++ b/host_vars/hobbes.n39.eu/vault
@@ -1,9 +1,6 @@
 $ANSIBLE_VAULT;1.1;AES256
-32313738636231313036633334333934643839636563646334336533316436653263623461643438
-6362343635626266313466643465343962663931623662320a316635613231313930343937363064
-33326164333137633039376363643539346463303934333430626431336637326638363233333234
-3132333533376134380a383837616331303536623665383735663531343538366332313236386137
-62306436663934383363616332316262313762633261396535663533636665633532316366386430
-65343830376634633365343337313433643465323662313563366463393664653766623338623635
-30653263303761316238396634346337636461643231303561353133643162633934323161663539
-66646364373034633334
+32343732363234396136616164383833316634373061376235656566303761646461626138363432
+3264633461383739393138396233303839363132343866370a306433306364666438623434383036
+63366634313937623736393636393030333961323335323762663538373631353331353162613362
+3661653539306365350a333263383537643738373939376563356566313732613766303931633630
+6462

From d6da86e7117f5625223aec387d413ae9eaaa24b3 Mon Sep 17 00:00:00 2001
From: Stefan Haun <tux@netz39.de>
Date: Wed, 3 Jan 2024 20:24:58 +0100
Subject: [PATCH 2/8] Remove old kiosk setup from hobbes

---
 host-hobbes.yml | 61 -------------------------------------------------
 1 file changed, 61 deletions(-)

diff --git a/host-hobbes.yml b/host-hobbes.yml
index 7db081c..c5b9895 100644
--- a/host-hobbes.yml
+++ b/host-hobbes.yml
@@ -19,11 +19,6 @@
           # This is needed for the user-executed tasks
           - acl
           # Regular packages
-          - lightdm
-          - accountsservice
-          - unclutter
-          - lxde
-          - chromium-browser
           - rng-tools
 
     - name: Remove the screensavers
@@ -53,9 +48,6 @@
 
 
     ### Kiosk setup
-    #
-    # https://github.com/grafana/grafana-kiosk
-
     - name: Ensure kiosk user is there
       ansible.builtin.user:
         name: "{{ kiosk_user }}"
@@ -63,57 +55,4 @@
         append: yes
 
 
-    - name: Create bin directory
-      file:
-        path: "/home/{{ kiosk_user }}/bin"
-        owner: "{{ kiosk_user }}"
-        mode: '0755'
-        state: directory
-
-    - name: Download grafana-kiosk
-      ansible.builtin.get_url:
-        url: "https://github.com/grafana/grafana-kiosk/releases/download/{{ kiosk_software_version }}/grafana-kiosk.linux.{{ kiosk_software_arch }}"
-        dest: "/home/{{ kiosk_user }}/bin/grafana-kiosk"
-        mode: '0755'
-        force: no
-
-
-    - name: Setup autologin in lightdm
-      ansible.builtin.blockinfile:
-        path: /etc/lightdm/lightdm.conf
-        block: |
-          [Seat:seat0]
-          autologin-user = pi
-          autologin-user-timeout = 0
-          autologin-in-background = False
-
-    - name: Remove autostart
-      # None of the things in autostart are needed or wanted
-      ansible.builtin.file:
-        path: /etc/xdg/lxsession/LXDE/autostart
-        state: absent
-
-
-    - name: Add systemd service
-      ansible.builtin.template:
-        src: templates/hobbes/grafana-kiosk.service.j2
-        dest: /etc/systemd/system/grafana-kiosk.service
-        owner: root
-        group: root
-        mode: '0644'
-
-    - name: Enable and start kiosk service
-      ansible.builtin.service:
-        name: grafana-kiosk.service
-        enabled: true
-        state: started
-
-    - name: Set default systemd target to graphical
-      ansible.builtin.file:
-        src: /lib/systemd/system/graphical.target
-        dest: /etc/systemd/system/default.target
-        state: link
-        force: yes
-
-
   handlers:

From eacac6a19a3a006ba7ad4c4dfca99eae0b350c3e Mon Sep 17 00:00:00 2001
From: Stefan Haun <tux@netz39.de>
Date: Wed, 3 Jan 2024 20:26:32 +0100
Subject: [PATCH 3/8] Remove old service template for Hobbes

---
 templates/hobbes/grafana-kiosk.service.j2 | 36 -----------------------
 1 file changed, 36 deletions(-)
 delete mode 100644 templates/hobbes/grafana-kiosk.service.j2

diff --git a/templates/hobbes/grafana-kiosk.service.j2 b/templates/hobbes/grafana-kiosk.service.j2
deleted file mode 100644
index 0712910..0000000
--- a/templates/hobbes/grafana-kiosk.service.j2
+++ /dev/null
@@ -1,36 +0,0 @@
-[Unit]
-Description=Grafana Kiosk
-Documentation=https://github.com/grafana/grafana-kiosk
-Documentation=https://grafana.com/blog/2019/05/02/grafana-tutorial-how-to-create-kiosks-to-display-dashboards-on-a-tv
-After=network.target
-Wants=graphical.target
-After=graphical.target
-
-[Service]
-User={{ kiosk_user }}
-Environment="DISPLAY=:0"
-Environment="XAUTHORITY=/home/{{ kiosk_user }}/.Xauthority"
-
-# These should work according to the docs, but are nowhere in the code?
-#Environment="KIOSK_MODE=full"
-#Environment="KIOSK_AUTOFIT=false"
-#Environment="KIOSK_LXDE_ENABLED=true"
-#Environment="KIOSK_LXDE_HOME=/home/{{ kiosk_user }}"
-#Environment="KIOSK_URL={{ kiosk_url }}"
-#Environment="KIOSK_LOGIN_METHOD=local"
-#Environment="KIOSK_LOGIN_USER={{ kiosk_grafana_user }}"
-#Environment="KIOSK_LOGIN_PASSWORD={{ kiosk_grafana_pass }}"
-
-# Disable screensaver etc.
-ExecStartPre=xset s off
-ExecStartPre=xset -dpms
-ExecStartPre=xset s noblank
-
-ExecStart=/home/{{ kiosk_user }}/bin/grafana-kiosk -kiosk-mode=full -autofit=false  -lxde-home=/home/{{ kiosk_user }} -URL="{{ kiosk_url }}" -login-method=local -username={{ kiosk_grafana_user }} --password={{ kiosk_grafana_pass }}
-
-Restart=on-failure
-RestartSec=30s
-
-[Install]
-WantedBy=graphical.target
-

From bb95336f13c51a8c48e3b35c8d616d6e369c2333 Mon Sep 17 00:00:00 2001
From: Stefan Haun <tux@netz39.de>
Date: Wed, 3 Jan 2024 20:21:42 +0100
Subject: [PATCH 4/8] Add configuration for grafana screenshots

---
 host_vars/radon.n39.eu/vars.yml |  8 ++++++++
 host_vars/radon.n39.eu/vault    | 22 +++++++++++++---------
 2 files changed, 21 insertions(+), 9 deletions(-)

diff --git a/host_vars/radon.n39.eu/vars.yml b/host_vars/radon.n39.eu/vars.yml
index 36f7d92..e224d5c 100644
--- a/host_vars/radon.n39.eu/vars.yml
+++ b/host_vars/radon.n39.eu/vars.yml
@@ -4,3 +4,11 @@ pwr_meter_amqp_user: "pwr-meter"
 pwr_meter_amqp_pass: "{{ vault_pwr_meter_amqp_pass }}"
 pwr_meter_api_token: "{{ vault_pwr_meter_api_token }}"
 brotherql_printer_host: "brotherql-720nw.n39.eu"
+
+# URL for the grafana kiosk in our Bastelbereich
+kiosk_grafana_url: "https://grafana.n39.eu/d/xpLj6UD4z/hobbes-space-monitor?orgId=1"
+kiosk_grafana_user: "{{ vault_kiosk_grafana_user }}"
+kiosk_grafana_pass: "{{ vault_kiosk_grafana_pass }}"
+kiosk_mqtt_host: "mqtt.n39.eu"
+kiosk_mqtt_topic: "Netz39/Things/HackingDashboard/Screenshot"
+
diff --git a/host_vars/radon.n39.eu/vault b/host_vars/radon.n39.eu/vault
index 51ed17c..14c9a89 100644
--- a/host_vars/radon.n39.eu/vault
+++ b/host_vars/radon.n39.eu/vault
@@ -1,10 +1,14 @@
 $ANSIBLE_VAULT;1.1;AES256
-61393134306361663861356132333135633566626136383536363763646134386338363362343830
-6339626232333037613437386634396138323438643037390a366338353862653439323961626532
-37393438326261363563323233333364323536373735383834383134653935383436356137396166
-3531326465363438310a663232306138333866373637336234326166666261333332386632316163
-61616339656436666233343339383835643934366661366333386363386639306631643366623333
-30666430623435633961613932323239343239623532316662323937346634656136396539303036
-63363365363861646333386364373263303037663266323832663761633633663136616338323362
-36326561623063646666373034333335373135343736633066393937653234313932363138643065
-38646231333564303861633231353535623436326135303463613738346231633962
+64396666646432653766656333333139613631333035393137363036633330336134383932663631
+6533326532333366633136346232306637306266343264380a616164643037393036383834313238
+32343437343466343262336137633436343935663465616364303961656565643134346563373461
+3337303534646563660a366562323065666630626331346266366139653533386238663361373930
+30623733336361353838373730316537623066326166366634643466386332396333613531613564
+38373363303466346639343563356339303037323261383034316439326237636565633462336462
+35313561356465393337616162323866393365613537333461656234313464653165333963343331
+32343634383335663764353831303864373637393833366333376635343665396366616363663033
+37323031316535636131333738633237383665323638613233666432316261376239636234626638
+33313230643563316662323937656338613362646466323335376363626163383233623831643565
+31393438363334653863363536373632333930616636323237336236353863616638616165303931
+63333639393665633537646665613933323632376162363139656632323166393264313333653163
+64333935356138336562366634636364346461356539363162616438613232306533

From 8ad1c267cebec3992c33c472a791f91c43763a38 Mon Sep 17 00:00:00 2001
From: Stefan Haun <tux@netz39.de>
Date: Wed, 3 Jan 2024 20:22:28 +0100
Subject: [PATCH 5/8] Set-up docker container for Grafana Screenshots on Radon

---
 host-radon.yml | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/host-radon.yml b/host-radon.yml
index 0a585e9..1648adf 100644
--- a/host-radon.yml
+++ b/host-radon.yml
@@ -209,6 +209,22 @@
       tags:
         - labelprinter
 
+    - name: Setup docker container for Grafana Screenshots
+      docker_container:
+        name: grafana-screenshot
+        image: mrtux/grafana-screenshot:latest
+        pull: true
+        restart_policy: unless-stopped
+        detach: yes
+        env:
+          MQTT_BROKER_URL: "{{ kiosk_mqtt_host }}"
+          MQTT_TOPIC: "{{ kiosk_mqtt_topic }}"
+          GRAFANA_DASHBOARD_URL: "{{ kiosk_grafana_url }}"
+          GRAFANA_USERNAME: "{{ kiosk_grafana_user }}"
+          GRAFANA_PASSWORD: "{{ kiosk_grafana_pass }}"
+      tags:
+        - grafana-screenshot
+
   handlers:
     - name: restart mosquitto
       docker_container:

From 7b1ecb13fd2103cc659d88a1110f5bf27d6c861f Mon Sep 17 00:00:00 2001
From: Stefan Haun <tux@netz39.de>
Date: Thu, 4 Jan 2024 21:54:53 +0100
Subject: [PATCH 6/8] Add Script to run the Kiosk on hobbes

---
 templates/hobbes/kiosk.sh.j2 | 48 ++++++++++++++++++++++++++++++++++++
 1 file changed, 48 insertions(+)
 create mode 100755 templates/hobbes/kiosk.sh.j2

diff --git a/templates/hobbes/kiosk.sh.j2 b/templates/hobbes/kiosk.sh.j2
new file mode 100755
index 0000000..e9c7944
--- /dev/null
+++ b/templates/hobbes/kiosk.sh.j2
@@ -0,0 +1,48 @@
+#!/bin/bash
+
+# Check if the script is run by root
+if [ "$EUID" -ne 0 ]
+  then echo "Please run as root"
+  exit
+fi
+
+# MQTT broker details
+BROKER="{{ kiosk_mqtt_host }}"
+TOPIC="{{ kiosk_mqtt_topic }}"
+
+# Variable to store the PID of the fbi process
+fbi_pid=0
+
+# Function to be executed on SIGTERM
+on_sigterm() {
+    echo "SIGTERM received, exiting..."
+    # Kill the fbi process with the stored PID
+    if [ $fbi_pid -ne 0 ]; then
+        sudo kill $fbi_pid
+    fi
+    # Remove the temporary file
+    rm -f /tmp/grafana.png
+    exit 0
+}
+
+# Trap SIGTERM and call on_sigterm() when it is received
+trap 'on_sigterm' SIGTERM
+
+while true
+do
+    # Subscribe to the topic and save received data to a file
+    mosquitto_sub -h $BROKER -t $TOPIC -C 1 > /tmp/grafana.png
+
+    # Kill the previous fbi process
+    if [ $fbi_pid -ne 0 ]; then
+        sudo kill $fbi_pid
+    fi
+
+    # Display the image using fbi
+    fbi -T 1 -noverbose -a /tmp/grafana.png &
+    fbi_pid=$!
+
+    # Wait to avoid a race condition between
+    # fbi starting and mosquitto truncating the file
+    sleep 1
+done

From 00110e860793096f5699a466a689af9cf8c43d83 Mon Sep 17 00:00:00 2001
From: Stefan Haun <tux@netz39.de>
Date: Thu, 4 Jan 2024 22:15:28 +0100
Subject: [PATCH 7/8] Add a systemd unit to start the kiosk

---
 files/hobbes/grafana-kiosk.service | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)
 create mode 100644 files/hobbes/grafana-kiosk.service

diff --git a/files/hobbes/grafana-kiosk.service b/files/hobbes/grafana-kiosk.service
new file mode 100644
index 0000000..09a32ce
--- /dev/null
+++ b/files/hobbes/grafana-kiosk.service
@@ -0,0 +1,17 @@
+[Unit]
+Description=Grafana Kiosk
+After=network.target
+Wants=network.target
+
+[Service]
+User=root
+
+ExecStart=/usr/local/bin/kiosk.sh
+
+Restart=always
+
+PIDFile=/run/kiosk.pid
+ExecStop=/bin/kill -s SIGTERM $MAINPID
+
+[Install]
+WantedBy=multi-user.target

From 676b8408f02377a6dd385402d1cb336a65c7cd62 Mon Sep 17 00:00:00 2001
From: Stefan Haun <tux@netz39.de>
Date: Thu, 4 Jan 2024 01:25:38 +0100
Subject: [PATCH 8/8] Setup a Kiosk on hobbes to show Grafana screenshots

---
 host-hobbes.yml                  | 29 ++++++++++++++++++++++++-----
 host_vars/hobbes.n39.eu/vars.yml |  3 +++
 2 files changed, 27 insertions(+), 5 deletions(-)

diff --git a/host-hobbes.yml b/host-hobbes.yml
index c5b9895..af2ec88 100644
--- a/host-hobbes.yml
+++ b/host-hobbes.yml
@@ -8,7 +8,6 @@
 
   roles:
 
-
   tasks:
     - name: Install packages needed for the system
       # This is a list of all packages,
@@ -16,10 +15,9 @@
       ansible.builtin.apt:
         state: present
         name:
-          # This is needed for the user-executed tasks
-          - acl
-          # Regular packages
-          - rng-tools
+          - mosquitto-clients
+          - fbi
+
 
     - name: Remove the screensavers
       ansible.builtin.apt:
@@ -54,5 +52,26 @@
         groups: audio,plugdev,input,netdev
         append: yes
 
+    - name: Install Kiosk script
+      ansible.builtin.template:
+        src: templates/hobbes/kiosk.sh.j2
+        dest: /usr/local/bin/kiosk.sh
+        owner: root
+        group: root
+        mode: '0755'
+
+    - name: Add systemd service
+      ansible.builtin.copy:
+        src: files/hobbes/grafana-kiosk.service
+        dest: /etc/systemd/system/grafana-kiosk.service
+        owner: root
+        group: root
+        mode: '0644'
+
+    - name: Enable and start kiosk service
+      ansible.builtin.service:
+        name: grafana-kiosk.service
+        enabled: true
+        state: started
 
   handlers:
diff --git a/host_vars/hobbes.n39.eu/vars.yml b/host_vars/hobbes.n39.eu/vars.yml
index e576735..b0b622b 100644
--- a/host_vars/hobbes.n39.eu/vars.yml
+++ b/host_vars/hobbes.n39.eu/vars.yml
@@ -2,3 +2,6 @@
 server_admin: "admin+hobbes@netz39.de"
 mac: "b8:27:eb:f9:43:43"
 kiosk_user: pi
+kiosk_mqtt_host: "mqtt.n39.eu"
+kiosk_mqtt_topic: "Netz39/Things/HackingDashboard/Screenshot"
+docker_data_root: "/srv/docker"