deploy 2GB swap files on Nimbus hosts

Signed-off-by: Jakub Sokołowski <jakub@status.im>

ansible/group_vars/all.yml

@@ -30,6 +30,10 @@ bootstrap__extra_volume_path: '/docker'
 # Disable Watchtower cleanup to avoid removal errors
 bootstrap__watchtower_cleanup_flag: false
 
+# Beacon nodes can be quite memory hungry
+swap_file_path: '/docker/main.swap'
+swap_file_size_mb: 2048
+
 # Custom SSH accounts for Nimbus fleet
 bootstrap__active_users:
   - { name: adamb,   uid: 7003, groups: [] }

ansible/main.yml

@@ -19,6 +19,8 @@
     - nimbus-master
     - nimbus-slaves
   tags: beacon-node
+  roles:
+    - { role: swap-file, tags: swap-file }
   tasks:
     - include_role:
         name: infra-role-beacon-node

ansible/requirements.yml

@@ -57,3 +57,7 @@
 - name: systemd-timer
   src: git@github.com:status-im/infra-role-systemd-timer.git
   scm: git
+
+- name: swap-file
+  src: git@github.com:status-im/infra-role-swap-file.git
+  scm: git