67 lines
2.3 KiB
YAML
67 lines
2.3 KiB
YAML
---
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- name: set dns server for docker
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set_fact:
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docker_dns_servers: "{{ dns_servers }}"
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- name: show docker_dns_servers
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debug:
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msg: "{{ docker_dns_servers }}"
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- name: add upstream dns servers
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set_fact:
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docker_dns_servers: "{{ docker_dns_servers + upstream_dns_servers|default([]) }}"
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when: dns_mode in ['coredns', 'coredns_dual']
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- name: add global searchdomains
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set_fact:
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docker_dns_search_domains: "{{ docker_dns_search_domains + searchdomains|default([]) }}"
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- name: check system nameservers
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shell: set -o pipefail && grep "^nameserver" /etc/resolv.conf | sed -r 's/^nameserver\s*([^#\s]+)\s*(#.*)?/\1/'
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args:
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executable: /bin/bash
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changed_when: False
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register: system_nameservers
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check_mode: no
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- name: check system search domains
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# noqa 306 - if resolf.conf has no search domain, grep will exit 1 which would force us to add failed_when: false
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# Therefore -o pipefail is not applicable in this specific instance
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shell: grep "^search" /etc/resolv.conf | sed -r 's/^search\s*([^#]+)\s*(#.*)?/\1/'
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args:
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executable: /bin/bash
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changed_when: False
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register: system_search_domains
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check_mode: no
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- name: add system nameservers to docker options
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set_fact:
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docker_dns_servers: "{{ docker_dns_servers | union(system_nameservers.stdout_lines) | unique }}"
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when: system_nameservers.stdout
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- name: add system search domains to docker options
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set_fact:
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docker_dns_search_domains: "{{ docker_dns_search_domains | union(system_search_domains.stdout.split()|default([])) | unique }}"
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when: system_search_domains.stdout
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- name: check number of nameservers
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fail:
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msg: "Too many nameservers. You can relax this check by set docker_dns_servers_strict=false in all.yml and we will only use the first 3."
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when: docker_dns_servers|length > 3 and docker_dns_servers_strict|bool
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- name: rtrim number of nameservers to 3
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set_fact:
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docker_dns_servers: "{{ docker_dns_servers[0:3] }}"
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when: docker_dns_servers|length > 3 and not docker_dns_servers_strict|bool
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- name: check number of search domains
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fail:
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msg: "Too many search domains"
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when: docker_dns_search_domains|length > 6
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- name: check length of search domains
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fail:
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msg: "Search domains exceeded limit of 256 characters"
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when: docker_dns_search_domains|join(' ')|length > 256
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