fix: node_exporter - Add test for ProtectHome

Add a tmpfs mount to the node_exporter testing to make sure ProtectHome
is changed.

Signed-off-by: SuperQ <[email protected]>

roles/node_exporter/molecule/alternative/prepare.yml

@@ -1,59 +1,3 @@
----
-- name: Run local preparation
-  hosts: localhost
-  gather_facts: false
-  tasks:
-    - name: Download node_exporter binary to local folder
-      become: false
-      ansible.builtin.get_url:
-        url: "https://github.com/prometheus/node_exporter/releases/download/v{{\
-          \ node_exporter_version }}/node_exporter-{{ node_exporter_version }}.linux-{{\
-          \ go_arch }}.tar.gz"
-        dest: "/tmp/node_exporter-{{ node_exporter_version }}.linux-{{ go_arch }}.tar.gz"
-        mode: 0644
-      register: _download_binary
-      until: _download_binary is succeeded
-      retries: 5
-      delay: 2
-      check_mode: false
-
-    - name: Unpack node_exporter binary
-      become: false
-      ansible.builtin.unarchive:
-        src: "/tmp/node_exporter-{{ node_exporter_version }}.linux-{{ go_arch }}.tar.gz"
-        dest: "/tmp"
-        creates: "/tmp/node_exporter-{{ node_exporter_version }}.linux-{{ go_arch\
-          \ }}/node_exporter"
-      check_mode: false
-
-    - name: Link to node_exporter binaries directory
-      become: false
-      ansible.builtin.file:
-        src: "/tmp/node_exporter-{{ node_exporter_version }}.linux-amd64"
-        dest: "/tmp/node_exporter-linux-amd64"
-        state: link
-      check_mode: false
-
-    - name: Install pyOpenSSL for certificate generation
-      ansible.builtin.pip:
-        name: "pyOpenSSL"
-
-    - name: Create private key
-      community.crypto.openssl_privatekey:
-        path: "/tmp/tls.key"
-
-    - name: Create CSR
-      community.crypto.openssl_csr:
-        path: "/tmp/tls.csr"
-        privatekey_path: "/tmp/tls.key"
-
-    - name: Create certificate
-      community.crypto.x509_certificate:
-        path: "/tmp/tls.cert"
-        csr_path: "/tmp/tls.csr"
-        privatekey_path: "/tmp/tls.key"
-        provider: selfsigned
-
 - name: Run target preparation
   hosts: all
   any_errors_fatal: true
@@ -76,3 +20,18 @@
           dest: "{{ node_exporter_tls_server_config.cert_file }}"
         - src: "/tmp/tls.key"
           dest: "{{ node_exporter_tls_server_config.key_file }}"
+
+    - name: Create test mount directory
+      ansible.builtin.file:
+        path: /home/test
+        state: directory
+        owner: root
+        group: root
+        mode: 0755
+
+    - name: Mount test filesystem
+      ansible.posix.mount:
+        path: /home/test
+        src: tmpfs
+        fstype: tmpfs
+        state: mounted