log2ram

Ansible Role: log2ram

This role installs and configures log2ram on Debian, Ubuntu, Archlinux, CentOS and Fedora systems. log2ram is mostly useful on systems which use an SD Card, like for example a Raspberry-Pi.

On Debian-based systems, the role uses the author's unofficial repository. On other distributions the installation is done manually.

Requirements

None.

Role Variables

Below is a list of the available variables and their default values. Make sure to also check the defaults/main.yml file.

log2ram_enable_on_boot: true

Whether to enable log2ram on boot or not.

log2ram_reboot_after_install: true

Whether to reboot the machine after instralling log2ram or not. The project's author recommends to reboot the machine after installing log2ram. Note that Ansible will wait for the systems to come back up and continue with the rest of the tasks.

log2ram_state: install

Possible values are:

install to install log2ram,

remove to uninstall log2ram and

update to update log2ram.

log2ram_size: "40M"

The ramdisk size. In case of the error /var/log.hdd/ doesn't exist.Can't sync., the size has to be increased to a value > 40M!

log2ram_use_rsync: "true"

Whether to use rsync instead of cp. According to log2ram's author, rsync offers better performance.

log2ram_mail: "false"

If set to false, the error system mail will be disabled if there's not enough space in RAM.

log2ram_path_disk: "/var/log"

Where the logs are saved.

log2ram_use_zl2r: "false"

Whether to enable zram compatibility. Note that zram must be already enabled and configured on the device if you want to use this.

log2ram_compression_algorithm: "lz4"

The compression algorithm used for zram. Check the project's README for more information.

log2ram_log_disk_size: "100M"

The uncompressed zram size.

Dependencies

None.

Example Playbook

Including an example of how to use your role (for instance, with variables passed in as parameters) is always nice for users too:

- hosts: server
  vars_files:
    - vars/main.yml

  roles:
    - { role: chzerv.log2ram }

The vars/main.yml file:

---
log2ram_enable_on_boot: true
log2ram_reboot_after_install: true

log2ram_size: "50M"
log2ram_use_rsync: "false"
log2ram_mail: "true"
log2ram_path_disk: "/var/log"
log2ram_use_zl2r: "false"
log2ram_compression_algorithm: "lz4"