Catena Ansible Role: systemd-swap

systemd-swap is a script for creating hybrid swap space from zram swaps, swap files and swap partitions.

Role variables

Variable	Default	Info
systemd_swap	[]	Create custom configuration files in /etc/systemd/swap.conf.d/*.conf
systemd_swap_cleanup	false	Remove existing configuration files from /etc/systemd/swap.conf.d/*.conf.

systemd_swap

Manage swap.conf.d - systemd-swap configuration files.

Configuration files will have the .conf extension and will be placed in the configuration snippets directory /etc/systemd/swap.conf.d. These configuration files can control zram, zswap and swapfc. The following example enables zram with lzo-rle compression:

# Default
systemd_swap: []

# Example
systemd_swap:
  # /etc/systemd/swap.conf.d/zram_swap.conf
  - name: zram_swap
    options:
      zram_enabled: 1
      zram_size: $(( RAM_SIZE / 4 )) # This is 1/4 of ram size by default.
      zram_count: ${NCPU}            # Device count
      zram_streams: ${NCPU}          # Compress streams
      zram_alg: lzo-rle              # Compressor algorithm: lzo, lz4, zstd, lzo-rle
      zram_prio: 32767               # 1 - 32767