1d01c6d3da
This is a role to configure swap and /opt on an infra host. Originally we wrote this for devstack-gate with Icd4e6d8ab84471ad06e69c3e0f9bac92776efc78. It was ported into the native devstack job with Iffe54fbccbccd68db08f79a1b51dd7f76dbff408. This is really generic, and it's quite possible non-devstack jobs would like to setup swap for jobs too, so o-z-j is a better home for the role. Change-Id: I0e9c846ace7fac8a1340746c6818fba6ec963018
66 lines
1.4 KiB
YAML
66 lines
1.4 KiB
YAML
---
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# If no ephemeral devices are available, use root filesystem
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- name: Calculate required swap
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set_fact:
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swap_required: "{{ configure_swap_size - ansible_memory_mb['swap']['total'] | int }}"
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- block:
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- name: Get root filesystem
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shell: df --output='fstype' /root | tail -1
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register: root_fs
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- name: Save root filesystem
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set_fact:
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root_filesystem: "{{ root_fs.stdout }}"
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- debug: var=root_filesystem
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# Note, we don't use a sparse device to avoid wedging when disk space
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# and memory are both unavailable.
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# Cannot fallocate on filesystems like XFS, so use slower dd
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- name: Create swap backing file for non-EXT fs
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when: '"ext" not in root_filesystem'
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become: yes
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command: dd if=/dev/zero of=/root/swapfile bs=1M count={{ swap_required }}
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args:
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creates: /root/swapfile
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- name: Create sparse swap backing file for EXT fs
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when: '"ext" in root_filesystem'
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become: yes
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command: fallocate -l {{ swap_required }}M /root/swapfile
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args:
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creates: /root/swapfile
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- name: Ensure swapfile perms
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become: yes
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file:
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path: /root/swapfile
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owner: root
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group: root
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mode: 0600
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- name: Make swapfile
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become: yes
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command: mkswap /root/swapfile
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- name: Write swap to fstab
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become: yes
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mount:
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path: none
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src: /root/swapfile
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fstype: swap
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opts: sw
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passno: 0
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dump: 0
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state: present
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- name: Add all swap
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become: yes
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command: swapon -a
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- debug: var=swap_required
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