Fun with Ansible.
`defaults/main.yml`:
docker_mtu: "{{ ansible_default_ipv6.mtu | default(1450) | int }}"
To use this variable in another default variable, it always ends up as a string. Which the docker daemon does not really like.
Result? Let python/jinja2 handle it in the template:
{{ dict(docker_daemon_config, **{"mtu": docker_mtu|int }) | to_nice_json }}
Does someone have a better solution so the MTU is actually written out as an integer?
#ansible #jinja2 #python
Anton /
npub12n…2a5p8
2024-06-21 15:22:57
Author Public Key
npub12nnrdgd46tr9r2hgf8ru2n2hlpcxl6mylsf3hlzpna6jl3qr07vqv2a5p8Published at
2024-06-21 15:22:57Event JSON
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"content": "Fun with Ansible.\n`defaults/main.yml`:\ndocker_mtu: \"{{ ansible_default_ipv6.mtu | default(1450) | int }}\"\n\nTo use this variable in another default variable, it always ends up as a string. Which the docker daemon does not really like.\n\nResult? Let python/jinja2 handle it in the template:\n\n{{ dict(docker_daemon_config, **{\"mtu\": docker_mtu|int }) | to_nice_json }}\n\nDoes someone have a better solution so the MTU is actually written out as an integer?\n\n#ansible #jinja2 #python",
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}