Created
June 30, 2015 09:29
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Ansible role for creating a Swap file
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- name: set swap_file variable | |
set_fact: | |
swap_file: /mnt/{{ swap_space }}.swap | |
- name: check if swap file exists | |
stat: | |
path: "{{ swap_file }}" | |
register: swap_file_check | |
- name: create swap file | |
sudo: yes | |
command: fallocate -l {{ swap_space }} {{ swap_file }} | |
when: not swap_file_check.stat.exists | |
- name: set permissions on swap file | |
sudo: yes | |
file: | |
path: "{{ swap_file }}" | |
mode: 0600 | |
- name: format swap file | |
sudo: yes | |
command: mkswap {{ swap_file }} | |
when: not swap_file_check.stat.exists | |
- name: add to fstab | |
sudo: yes | |
lineinfile: | |
dest: /etc/fstab | |
regexp: "{{ swap_file }}" | |
line: "{{ swap_file }} none swap sw 0 0" | |
- name: turn on swap | |
sudo: yes | |
command: swapon -a | |
- name: set swapiness | |
sudo: yes | |
sysctl: | |
name: vm.swappiness | |
value: "1" |
I want to create swap on disk by using lvm module so that I can create swap vol conditional. lets say swap should be 2x memory when memory is <=4, 1x memory from 4-16 and 16 when memory is > 16. Please suggest.
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Great tool to create swap! I had to correct it though while using it on EC2/CentOS7/XFS. Apparently
fallocate
is not the right way to create swap files on XFS.swapon
gives you an error. So I switched to plaindd
instead. Everything else worked perfectly for me. Thanks!