Kapitel 08: register/ignore_errors

08/grep_einfach.yml

@@ -0,0 +1,12 @@
+---
+- hosts: localhost
+  gather_facts: no
+
+  tasks:
+    - name: grep aufrufen
+      command: grep root /etc/passwd
+      register: output
+
+    - name: Rückgabe ausgeben
+      debug: var=output
+

08/grep_einfach_fehler.yml

@@ -0,0 +1,13 @@
+---
+- hosts: localhost
+  gather_facts: no
+
+  tasks:
+    - name: grep aufrufen
+      command: grep toor /etc/passwd
+      register: output
+      ignore_errors: true
+
+    - name: Rückgabe ausgeben
+      debug: var=output
+

08/grep_username.yml

@@ -0,0 +1,25 @@
+---
+- hosts: localhost
+  gather_facts: no
+
+  tasks:
+    - name: Variable muss definiert sein
+      assert:
+        that:
+          - username is defined
+
+    - name: Rufe grep auf
+      command: 'grep {{ username }} /etc/passwd'
+      register: result
+      ignore_errors: True
+
+    - name: "{{ username }} existiert"
+      debug:
+        msg: '{{ username }} exists'
+      when: result is success
+
+    - name: "{{ username }} existiert nicht"
+      debug:
+        msg: '{{ username }} does not exist'
+      when: result is failed
+

08/var_definiert_oder_nicht.yml

@@ -0,0 +1,18 @@
+---
+- hosts: localhost
+  gather_facts: no
+
+  tasks:
+  - debug:
+      msg: "{{ inhalt }}"
+    when: inhalt|default(False)
+
+  - debug:
+      msg: "Variable nicht definiert"
+    when: inhalt is not defined
+
+  - debug:
+      msg:
+        - "inhalt|default(False) → {{ inhalt|default(False) }} → {{ inhalt|default(False)|bool }}"
+        - "inhalt is not defined → {{ inhalt is not defined }} → {{ inhalt is not defined|bool }}"
+

08/weiteres/debug1.yml

@@ -0,0 +1,13 @@
+---
+- hosts: localhost
+
+  tasks:
+    - command: grep root /etc/passwd
+      register: output
+
+    - debug:
+        var: output
+
+    - debug:
+        var: output.stdout
+

08/weiteres/debug2.yml

@@ -0,0 +1,14 @@
+---
+- hosts: localhost
+
+  tasks:
+    - command: grep toor /etc/passwd
+      register: output
+      ignore_errors: yes
+
+    - debug:
+        var: output
+
+    - debug:
+        var: output.stdout
+

08/weiteres/debug_folie.yml

@@ -0,0 +1,9 @@
+---
+- hosts: localhost
+  tasks:
+    - command: grep root2 /etc/passwd
+      register: output
+      ignore_errors: True
+
+    - debug: var=output
+

08/weiteres/debug_zusammen.yml

@@ -0,0 +1,18 @@
+---
+- hosts: localhost
+
+  tasks:
+    - command: grep root /etc/passwd
+      register: abc1
+      ignore_errors: yes
+
+    - command: grep toor /etc/passwd
+      register: abc2
+      ignore_errors: yes
+
+    - debug:
+        msg: "{{ abc1.failed }} --- {{ abc2.failed }}"
+
+    - debug:
+        msg: "{{ abc1 is failed }} --- {{ abc2 is failed }}"
+

extra/changed_failed_when.yml

@@ -0,0 +1,18 @@
+---
+- hosts:
+    - tn00-debian12
+    - tn00-alpine3i
+
+  gather_facts: no
+
+  tasks:
+    - name: "Gebe CHANGED zurück, wenn /etc/hostname den String 'debian' enthält"
+      command: cat /etc/hostname
+      register: output
+      changed_when: '"debian" in output.stdout'
+
+    - name: "Gebe FAILED zurück, wenn /etc/hostname den String 'alpine' enthält"
+      command: cat /etc/hostname
+      register: output
+      failed_when: '"alpine" in output.stdout'
+

extra/changed_when.yml

@@ -0,0 +1,9 @@
+---
+- hosts: all
+  gather_facts: no
+
+  tasks:
+    - command: cat /etc/hosts
+      register: output
+      changed_when: '"ubu" in output.stdout'
+

extra/ein_rechner_failed.yml

@@ -0,0 +1,26 @@
+---
+- hosts:
+  - tn00-debian12
+  - tn00-alpine3i
+
+  gather_facts: no
+
+  tasks:
+    - name: Debian bricht ab
+      debug:
+        msg: "Hallo"
+      failed_when: '"debian" in inventory_hostname'
+
+
+- hosts:
+  - tn00-debian12
+  - tn00-alpine3i
+
+  gather_facts: no
+
+  tasks:
+    - name: "Wer lebt noch?"
+      debug:
+        msg: "Lebenszeichen"
+
+

extra/wireguard-key-anlegen_changed_when.yml

@@ -0,0 +1,8 @@
+---
+- hosts: localhost
+  gather_facts: no
+  tasks:
+    - shell: "[ ! -f wg.pub ] && wg genkey | tee wg.priv | wg pubkey | tee wg.pub || true"
+      register: output
+      changed_when: output.stdout != ""
+

extra/wireguard-key-anlegen_creates.yml

@@ -0,0 +1,8 @@
+---
+- hosts: localhost
+  gather_facts: no
+  tasks:
+    - shell: "wg genkey | tee wg.priv | wg pubkey | tee wg.pub"
+      args:
+        creates: wg.pub
+