logcompress: configurable compression tool, default zstd

defaults/main.yml

@@ -1,3 +1,4 @@
+---
 has_hwrng:              '{{ansible_virtualization_role != "guest" and ansible_local.devices.hwrng }}'
 is_virt_guest:          '{{ansible_virtualization_role == "guest"}}'
 is_container:           '{{ansible_virtualization_role == "guest" and ansible_virtualization_type == "lxc"}}'
@@ -12,3 +13,4 @@ sshd_host_keys:
 - '/etc/ssh/ssh_host_ed25519_key'
 sshd_pubkey_authentication:   'yes'
 apt_clean_after_install: false
+logcompress_algo: 'zstd'

tasks/os-debian.yml

@@ -111,6 +111,7 @@
     - vim-nox
     - '{{ []  if is_container else  ["xfsdump", "xfsprogs"] }}'
     - '{{ needed_debs  if needed_debs is defined else  [] }}'
+    - '{{ logcompress_algo  if logcompress_algo else  [] }}'
 
 # remove garbage:
 

tasks/systemd.yml

@@ -55,6 +55,18 @@
   with_fileglob:
   - "systemd/system/*"
 
+- name: install systemd-logcompress-jobs
+  template:
+    src: "{{item}}"
+    dest: /etc/systemd/system
+    owner: root
+    group: root
+    mode: 0644
+  with_fileglob:
+  - "systemd/system/*"
+  vars:
+    command: '{{ logcompress_command | default( logcompress_compression_commands[ logcompress_algo | default( "zstd") ] ) }}'
+
 - name: enable services
   systemd: 
     name: "{{item}}"

templates/systemd/system/logcompress.service.j2

@@ -3,4 +3,4 @@ Description=Compress old logs in /var/log/%%Y
 
 [Service]
 Type=oneshot
-ExecStart=/usr/bin/find /var/log/ -regex '/var/log/2[0-9][0-9][0-9]/2[0-9][0-9][0-9]-[01][0-9]-[0-3][0-9]' -mtime +0 -exec xz {} +
+ExecStart=/usr/bin/find /var/log/ -regex '/var/log/2[0-9][0-9][0-9]/2[0-9][0-9][0-9]-[01][0-9]-[0-3][0-9]' -mtime +0 -exec {{command}} {} +

vars/main.yml

@@ -1,2 +1,8 @@
 ---
-# vars file for system
+# vars file for system
+logcompress_compression_commands:
+  gzip:  'gzip -9'
+  bzip2: 'bzip2 -9'
+  xz:    'xz -9'
+  lz4:   'lz4 -9 --rm'
+  zstd:  'zstd -19 --rm'