openssh-formula/openssh/files/default/ssh_known_hosts

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{#
# vi:syntax=jinja
#}
{#- Generates one known_hosts entry per given key #}
{%- macro known_host_entry(host, host_names, keys, include_localhost, omit_ip_address) %}
{#- Get IPv4 and IPv6 addresses from the DNS #}
{%- if not ((omit_ip_address is sameas true) or (host in omit_ip_address)) %}
{%- set ip4 = salt['dig.A'](host) -%}
{%- set ip6 = salt['dig.AAAA'](host) -%}
{%- else %}
{%- set ip4 = [] -%}
{%- set ip6 = [] -%}
{%- endif %}
{#- The host names to use are to be found within the dict 'host_names'. #}
{#- If there are none, the host is used directly. #}
{%- set names = host_names.get(host, host) -%}
{%- set names = [names] if names is string else names %}
{%- if include_localhost and host == grains['id'] %}
{%- do names.append('localhost') %}
{%- do names.append('127.0.0.1') %}
{%- do names.append('::1') %}
{%- endif -%}
{#- Extract the hostname from the FQDN and add it to the names. #}
{%- if use_hostnames is iterable -%}
{%- for name in names | sort -%}
{%- if salt["match.{}".format(hostnames_tgt_type)](hostnames_target, minion_id=name) -%}
{%- set hostname = name.split('.')|first -%}
{%- if hostname not in names -%}
{%- do names.append(hostname) -%}
{%- endif -%}
{%- endif -%}
{%- endfor -%}
{%- endif -%}
{#- Append IP addresses and aliases (if they are not already present) #}
{%- for ip in (ip4 + ip6)|sort -%}
{%- do names.append(ip) -%}
{%- for alias in aliases_ips.get(ip, []) -%}
{%- if alias not in names -%}
{%- do names.append(alias) -%}
{%- endif -%}
{%- endfor -%}
{%- endfor -%}
{#- Write one line per key; join the names together #}
{%- for line in keys.split('\n') -%}
{%- if line -%}
{{ ','.join(names) }} {{ line }}
{% endif -%}
{%- endfor -%}
{%- endmacro -%}
{#- Pre-fetch pillar data #}
{%- set target = known_hosts | traverse('target', "*.{}".format(grains['domain'])) -%}
{%- set tgt_type = known_hosts | traverse('tgt_type', 'glob') -%}
{%- set keys_function = known_hosts | traverse('mine_keys_function', 'public_ssh_host_keys') -%}
{%- set hostname_function = known_hosts | traverse('mine_hostname_function', 'public_ssh_hostname') -%}
{%- set use_hostnames = known_hosts | traverse('hostnames', False) -%}
{%- set hostnames_target_default = '*' if grains['domain'] == '' else "*.{}".format(grains['domain']) -%}
{%- set hostnames_target = known_hosts | traverse('hostnames:target', hostnames_target_default) -%}
{%- set hostnames_tgt_type = known_hosts | traverse('hostnames:tgt_type', 'glob') -%}
{%- set include_localhost = known_hosts | traverse('include_localhost', False) -%}
{%- set omit_ip_address = known_hosts | traverse('omit_ip_address', []) -%}
{#- Lookup IP of all aliases so that when we have a matching IP, we inject the alias name
in the SSH known_hosts entry -#}
{%- set aliases = known_hosts | traverse('aliases', []) -%}
{%- set aliases_ips = {} -%}
{%- for alias in aliases -%}
{%- for ip in salt['dig.A'](alias) + salt['dig.AAAA'](alias) -%}
{%- do aliases_ips.setdefault(ip, []).append(alias) -%}
{%- endfor -%}
{%- endfor -%}
{#- Salt Mine #}
{%- set host_keys = salt['mine.get'](target, keys_function, tgt_type=tgt_type) -%}
{%- set host_names = salt['mine.get'](target, hostname_function, tgt_type=tgt_type) -%}
{#- Salt SSH (if any) #}
{%- set public_ssh_host_keys = known_hosts | traverse('salt_ssh:public_ssh_host_keys', {}) %}
{%- for minion_id, minion_host_keys in public_ssh_host_keys.items() -%}
{%- if salt["match.{}".format(tgt_type)](target, minion_id=minion_id) -%}
{% do host_keys.update({minion_id: minion_host_keys}) %}
{%- endif -%}
{%- endfor -%}
{%- set public_ssh_host_names = known_hosts | traverse('salt_ssh:public_ssh_host_names', {}) %}
{%- for minion_id, minion_host_names in public_ssh_host_names.items() -%}
{%- if salt["match.{}".format(tgt_type)](target, minion_id=minion_id) -%}
{% do host_names.update({minion_id: minion_host_names}) %}
{%- endif -%}
{%- endfor %}
{#- Static Pillar data #}
{%- do host_keys.update(known_hosts | traverse('static', {})) -%}
{#- Loop over targetted minions -#}
{%- for host, keys in host_keys| dictsort -%}
{{ known_host_entry(host, host_names, keys, include_localhost, omit_ip_address) }}
{%- endfor -%}