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roles/posix/defaults/sysctl.yml

@@ -3,4 +3,6 @@ linux_manage_posix_sysctl: false
 linux_posix_sysctl_default: []
 linux_posix_sysctl_group: []
 linux_posix_sysctl_host: []
+# The combination strategy below is highly nested hierarchy compliant and recommended (Example provided below)
+# linux_posix_sysctl_host > linux_posix_sysctl_group > linux_posix_sysctl_default
 linux_posix_sysctl_all: "{{ (linux_posix_sysctl_host + linux_posix_sysctl_group + linux_posix_sysctl_default) | unique(attribute='name') }}"

roles/systemd/defaults/network.yml

@@ -16,16 +16,20 @@ linux_systemd_network_template: network.j2
 linux_systemd_network_default: []
 linux_systemd_network_group: []
 linux_systemd_network_host: []
+# The combination strategy below is highly nested hierarchy compliant and recommended
+# linux_systemd_network_host > linux_systemd_network_group > linux_systemd_network_default
 linux_systemd_network_all: "{{ (linux_systemd_network_host + linux_systemd_network_group + linux_systemd_network_default) |
   selectattr('name', 'defined') | selectattr('name', 'search', '\\.(network|link|netdev)$') |
   selectattr('config', 'defined') | unique(attribute='name') }}"
 
 linux_systemd_network_names: "{{ linux_systemd_network_all | map(attribute='name') }}"
+# Escape file names defined in linux_systemd_network_all
 linux_systemd_network_cleanup_regex:
   - "^({{ linux_systemd_network_names | select('match', '.*\\.link$') | map('replace', '.link', '') | join('|') }})\\.link$"
   - "^({{ linux_systemd_network_names | select('match', '.*\\.netdev$') | map('replace', '.netdev', '') | join('|') }})\\.netdev$"
   - "^({{ linux_systemd_network_names | select('match', '.*\\.network$') | map('replace', '.network', '') | join('|') }})\\.network$"
 # Escape backup files:
   - "^.*\\.\\d+\\.\\d{4}-\\d{2}-\\d{2}@\\d{2}:\\d{2}:\\d{2}~$"
 
+# Join regex expressions
 linux_systemd_network_cleanup_patterns: ["(?!{{ linux_systemd_network_cleanup_regex | join('|') }})"]