Add swap file to instance

ansible/roles/common/defaults/main.yaml

@@ -0,0 +1,3 @@
+---
+swap_file_path: "/swapfile"
+swap_file_size_mb: '512'

ansible/roles/common/tasks/main.yaml

@@ -65,3 +65,42 @@
       block: |
         alias ls='ls --color=auto'
 
+## set up swap
+
+- name: create swap file
+  command: "dd if=/dev/zero of={{ swap_file_path }} bs=1024 count={{ swap_file_size_mb }}k"
+  args:
+    creates: "{{ swap_file_path }}"
+
+- name: swap file permissions
+  file:
+    path: "{{ swap_file_path }}"
+    owner: root
+    group: root
+    mode: "0600"
+
+- name: check swap file type
+  command: "file {{ swap_file_path }}"
+  register: swapfile
+
+- name: mkswap
+  command: "mkswap {{ swap_file_path }}"
+  when: swapfile.stdout.find('swap file') == -1
+
+- name: swapfile in fstab
+  mount:
+    name: none
+    src: "{{ swap_file_path }}"
+    fstype: swap
+    opts: sw
+    passno: 0
+    dump: 0
+    state: present
+
+- name: mount swap
+  command: "swapon {{ swap_file_path }}"
+  when: ansible_swaptotal_mb < 1
+
+
+
+