Sergei Poljanski
0af23425f9
The ops server has 3.7 GB RAM and no swap. Forgejo, MinIO and the apps fit with room to spare, but a spike (a big push, git gc, parallel image pulls) would OOM-kill a service instead of paging out. swappiness 10, so it only swaps under real pressure. Assisted-by: Claude:opus-5
49 lines
1.4 KiB
YAML
49 lines
1.4 KiB
YAML
---
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- name: Check for an existing swapfile
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ansible.builtin.stat:
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path: "{{ swap_file }}"
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register: swap_stat
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- name: Create swapfile
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ansible.builtin.command:
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cmd: "dd if=/dev/zero of={{ swap_file }} bs=1M count={{ swap_size_mb }} status=none"
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when: not swap_stat.stat.exists or (swap_stat.stat.size != swap_size_mb * 1024 * 1024)
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register: swap_created
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- name: Restrict swapfile permissions
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ansible.builtin.file:
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path: "{{ swap_file }}"
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mode: '0600'
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owner: root
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group: root
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when: not ansible_check_mode or swap_stat.stat.exists
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- name: Format swapfile
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ansible.builtin.command:
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cmd: "mkswap {{ swap_file }}"
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when: swap_created is changed
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- name: Add swapfile to /etc/fstab
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ansible.builtin.lineinfile:
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path: /etc/fstab
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regexp: "^{{ swap_file }}\\s"
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line: "{{ swap_file }} none swap sw 0 0"
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- name: Enable swap
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ansible.builtin.command:
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cmd: "swapon {{ swap_file }}"
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register: swapon_result
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changed_when: swapon_result.rc == 0
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failed_when: swapon_result.rc != 0 and 'busy' not in swapon_result.stderr
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- name: Set swappiness
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ansible.builtin.copy:
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dest: /etc/sysctl.d/90-swap.conf
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content: "vm.swappiness = {{ swap_swappiness }}\n"
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mode: '0644'
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register: swappiness_conf
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- name: Apply swappiness
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ansible.builtin.command:
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cmd: sysctl -p /etc/sysctl.d/90-swap.conf
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when: swappiness_conf is changed
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