Initial commit of NSD ansible role
Change-Id: I97c6455f2513604b86156017b5b7b1d769e7bbc0
diff --git a/.cookiecutter_params.json b/.cookiecutter_params.json
new file mode 100644
index 0000000..76dfe96
--- /dev/null
+++ b/.cookiecutter_params.json
@@ -0,0 +1,24 @@
+{
+ "_template": "../cookiecutters/role",
+ "author": "Open Networking Foundation",
+ "company": "Open Networking Foundation",
+ "description": "NSD DNS Server",
+ "email": "support@opennetworking.org",
+ "issue_tracker_url": "https://jira.opennetworking.org/",
+ "license": "Apache-2.0",
+ "min_ansible_version": "2.9.5",
+ "molecule_privileged": "true",
+ "platform": "deleteme",
+ "platforms": {
+ "Ubuntu": [
+ "16.04",
+ "18.04"
+ ]
+ },
+ "role_defaults": {
+ "example_default1": "example_value1",
+ "example_default2": "example_value2"
+ },
+ "role_name": "nsd",
+ "year": "2020"
+}
diff --git a/.gitreview b/.gitreview
new file mode 100644
index 0000000..bc5343c
--- /dev/null
+++ b/.gitreview
@@ -0,0 +1,5 @@
+[gerrit]
+host=gerrit.opencord.org
+port=29418
+project=ansible/role/nsd.git
+defaultremote=origin
diff --git a/.reuse/dep5 b/.reuse/dep5
new file mode 100644
index 0000000..36ce305
--- /dev/null
+++ b/.reuse/dep5
@@ -0,0 +1,5 @@
+Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
+
+Files: .cookiecutter_params.json VERSION .gitreview
+Copyright: 2020 Open Networking Foundation
+License: Apache-2.0
diff --git a/LICENSES/Apache-2.0.txt b/LICENSES/Apache-2.0.txt
new file mode 100644
index 0000000..d645695
--- /dev/null
+++ b/LICENSES/Apache-2.0.txt
@@ -0,0 +1,202 @@
+
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diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..897b99b
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,39 @@
+# nsd Makefile
+#
+# SPDX-FileCopyrightText: © 2020 Open Networking Foundation <support@opennetworking.org>
+# SPDX-License-Identifier: Apache-2.0
+
+SHELL = bash -eu -o pipefail
+
+.DEFAULT_GOAL := help
+.PHONY: test lint yamllint ansiblelint license help
+
+test: ## run tests on the playbook with molecule
+ molecule --version
+ molecule test
+
+lint: yamllint ansiblelint ## run all lint checks
+
+# all YAML files
+YAML_FILES ?= $(shell find . -type f \( -name '*.yaml' -o -name '*.yml' \) -print )
+
+yamllint: ## lint check with yamllint
+ yamllint --version
+ yamllint \
+ -d "{extends: default, rules: {line-length: {max: 99}}}" \
+ -s $(YAML_FILES)
+
+ansiblelint: ## lint check with ansible-lint
+ ansible-lint --version
+ ansible-lint -v .
+ ansible-lint -v molecule/*/*
+
+license: ## Check license with the reuse tool
+ reuse --version
+ reuse --root . lint
+
+help: ## Print help for each target
+ @echo nsd test targets
+ @echo
+ @grep '^[[:alnum:]_-]*:.* ##' $(MAKEFILE_LIST) \
+ | sort | awk 'BEGIN {FS=":.* ## "}; {printf "%-25s %s\n", $$1, $$2};'
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..8af9627
--- /dev/null
+++ b/README.md
@@ -0,0 +1,65 @@
+<!--
+SPDX-FileCopyrightText: © 2020 Open Networking Foundation <support@opennetworking.org>
+SPDX-License-Identifier: Apache-2.0
+--!>
+# nsd
+
+NSD Authoritative DNS Server
+
+[NSD Documentation](https://nlnetlabs.nl/documentation/nsd/)
+
+By default, listens on 127.0.0.1 and assumes that `unbound` or a similar
+recursive resolver or a proxy like `dnscurve` is sending it requests.
+
+Both forward and reverse zones are created.
+
+TODO:
+
+- Handle creating forward-only zones, where the IP address isn't within the subnet
+
+## Requirements
+
+Minimum ansible version: 2.9.5
+
+## Defaults
+
+See the `dns_zones` structure:
+
+```yaml
+dns_zones:
+ example.com:
+ ip_range: 192.168.1.1/24
+ ns:
+ - gw.example.com.
+ a:
+ gw: 192.168.1.1
+ host1: 192.168.1.2
+ host2: 192.168.1.3
+ printer: 192.168.1.4
+ cname:
+ lpr: printer.example.com.
+ srv: {}
+ txt: {}
+```
+
+Note: In the molecule tests, `<zone>.serial` is used for the zonefile serial,
+and is set to a static value to guarantee idempotency. In production, this
+must be changed every time the zonefile changes, or can be omitted and the
+current timestamp is used to generate the serial. Other DNS roles tried
+`complicated solutions
+<https://github.com/bertvv/ansible-role-bind/blob/master/templates/bind_zone.j2>`_
+to guarantee the serial changes, but that seems like a lot of trouble, and is only useful for zone transfers which are silly/antiquated
+
+## Example Playbook
+
+```yaml
+- hosts: all
+ roles:
+ - nsd
+```
+
+## License and Author
+
+© 2020 Open Networking Foundation <support@opennetworking.org>
+
+License: Apache-2.0
diff --git a/VERSION b/VERSION
new file mode 100644
index 0000000..c0ab82c
--- /dev/null
+++ b/VERSION
@@ -0,0 +1 @@
+0.0.1-dev
diff --git a/defaults/main.yml b/defaults/main.yml
new file mode 100644
index 0000000..8a813bd
--- /dev/null
+++ b/defaults/main.yml
@@ -0,0 +1,13 @@
+---
+# nsd defaults/main.yml
+#
+# SPDX-FileCopyrightText: © 2020 Open Networking Foundation <support@opennetworking.org>
+# SPDX-License-Identifier: Apache-2.0
+
+nsd_ip4: "127.0.0.1"
+
+nsd_port: 53
+
+nsd_default_ttl: 3600
+
+dns_zones: {}
diff --git a/filter_plugins/unbound_revdns.py b/filter_plugins/unbound_revdns.py
new file mode 100644
index 0000000..365e55d
--- /dev/null
+++ b/filter_plugins/unbound_revdns.py
@@ -0,0 +1,39 @@
+#!/usr/bin/env python
+
+# SPDX-FileCopyrightText: © 2017-2020 Open Networking Foundation <support@opennetworking.org>
+# SPDX-License-Identifier: Apache-2.0
+
+# unbound_revdns - ansible filter - ipv4 address or cidr and generates a
+# reverse DNS string suitable for use with unbound, which requires them in a
+# slightly unusual format when a RFC1918 address is used with a local-zone
+# definition:
+# https://nlnetlabs.nl/documentation/unbound/unbound.conf/#local-zone
+# https://www.claudiokuenzler.com/blog/699/unbound-dns-not-serving-reverse-lookup-for-internal-addresses-rfc1918
+
+from __future__ import absolute_import
+import netaddr
+
+
+class FilterModule(object):
+ def filters(self):
+ return {
+ "unbound_revdns": self.unbound_revdns,
+ }
+
+ def unbound_revdns(self, var):
+ (o1, o2, o3, o4) = netaddr.IPNetwork(var).network.words
+
+ revdns = "%d.%d.%d.%d.in-addr.arpa." % (o4, o3, o2, o1)
+
+ if o2 == 0 or o1 == 10:
+ revdns = "%d.in-addr.arpa." % (o1)
+ elif (
+ o3 == 0
+ or (o1 == 172 and o2 >= 16 and o2 <= 31)
+ or (o1 == 192 and o2 == 168)
+ ):
+ revdns = "%d.%d.in-addr.arpa." % (o2, o1)
+ elif o4 == 0:
+ revdns = "%d.%d.%d.in-addr.arpa." % (o3, o2, o1)
+
+ return revdns
diff --git a/handlers/main.yml b/handlers/main.yml
new file mode 100644
index 0000000..dfb4676
--- /dev/null
+++ b/handlers/main.yml
@@ -0,0 +1,15 @@
+---
+# nsd handlers/main.yml
+#
+# SPDX-FileCopyrightText: © 2020 Open Networking Foundation <support@opennetworking.org>
+# SPDX-License-Identifier: Apache-2.0
+
+- name: restart-nsd
+ service:
+ name: "{{ nsd_service }}"
+ state: restarted
+
+- name: reload-nsd
+ service:
+ name: "{{ nsd_service }}"
+ state: reloaded
diff --git a/meta/main.yml b/meta/main.yml
new file mode 100644
index 0000000..f437da5
--- /dev/null
+++ b/meta/main.yml
@@ -0,0 +1,32 @@
+---
+# nsd meta/main.yml
+#
+# SPDX-FileCopyrightText: © 2020 Open Networking Foundation <support@opennetworking.org>
+# SPDX-License-Identifier: Apache-2.0
+
+galaxy_info:
+ author: Open Networking Foundation
+ description: NSD Authoritative DNS Server
+ company: Open Networking Foundation
+
+ issue_tracker_url: https://jira.opennetworking.org/
+
+ license: Apache-2.0
+
+ min_ansible_version: 2.9.5
+
+ platforms:
+ - name: Ubuntu
+ versions:
+ - "18.04"
+ - name: Debian
+ versions:
+ - "10"
+ - name: OpenBSD
+ versions:
+ - "6.8"
+
+ galaxy_tags:
+ - nsd
+
+dependencies: []
diff --git a/molecule/default/converge.yml b/molecule/default/converge.yml
new file mode 100644
index 0000000..e389b8f
--- /dev/null
+++ b/molecule/default/converge.yml
@@ -0,0 +1,28 @@
+---
+# nsd molecule/default/verify.yml
+#
+# SPDX-FileCopyrightText: © 2020 Open Networking Foundation <support@opennetworking.org>
+# SPDX-License-Identifier: Apache-2.0
+
+- name: Converge
+ hosts: all
+ vars:
+ dns_zones:
+ example.com:
+ serial: 20201102
+ ip_range: 192.168.1.1/24
+ ns:
+ - gw.example.com.
+ a:
+ gw: 192.168.1.1
+ host1: 192.168.1.2
+ host2: 192.168.1.3
+ printer: 192.168.1.4
+ cname:
+ lpr: printer.example.com.
+ srv: {}
+ txt: {}
+ tasks:
+ - name: "Include nsd"
+ include_role:
+ name: "nsd"
diff --git a/molecule/default/molecule.yml b/molecule/default/molecule.yml
new file mode 100644
index 0000000..f96dd10
--- /dev/null
+++ b/molecule/default/molecule.yml
@@ -0,0 +1,33 @@
+---
+# nsd molecule/default/molecule.yml
+#
+# SPDX-FileCopyrightText: © 2020 Open Networking Foundation <support@opennetworking.org>
+# SPDX-License-Identifier: Apache-2.0
+
+dependency:
+ name: galaxy
+driver:
+ name: docker
+platforms:
+ - name: "ubuntu-18.04-priv"
+ image: "quay.io/paulfantom/molecule-systemd:ubuntu-18.04"
+ privileged: true
+ volumes:
+ - "/sys/fs/cgroup:/sys/fs/cgroup:ro"
+ - name: "debian-10-priv"
+ image: "quay.io/paulfantom/molecule-systemd:debian-10"
+ privileged: true
+ volumes:
+ - "/sys/fs/cgroup:/sys/fs/cgroup:ro"
+provisioner:
+ name: ansible
+ playbooks:
+ prepare: prepare.yml
+ inventory:
+ host_vars:
+ debian-10-priv:
+ ansible_python_interpreter: /usr/bin/python3
+ ubuntu-18.04-priv:
+ ansible_python_interpreter: /usr/bin/python3
+verifier:
+ name: ansible
diff --git a/molecule/default/prepare.yml b/molecule/default/prepare.yml
new file mode 100644
index 0000000..311b712
--- /dev/null
+++ b/molecule/default/prepare.yml
@@ -0,0 +1,15 @@
+---
+# nsd molecule/default/prepare.yml
+#
+# SPDX-FileCopyrightText: © 2020 Open Networking Foundation <support@opennetworking.org>
+# SPDX-License-Identifier: Apache-2.0
+
+- name: Prepare
+ hosts: all
+
+ tasks:
+ - name: Add dnsutils so dig works in tests
+ apt:
+ name: "dnsutils"
+ state: "present"
+ update_cache: true
diff --git a/molecule/default/verify.yml b/molecule/default/verify.yml
new file mode 100644
index 0000000..a4851a1
--- /dev/null
+++ b/molecule/default/verify.yml
@@ -0,0 +1,32 @@
+---
+# nsd molecule/default/verify.yml
+#
+# SPDX-FileCopyrightText: © 2020 Open Networking Foundation <support@opennetworking.org>
+# SPDX-License-Identifier: Apache-2.0
+
+- name: Verify
+ hosts: all
+ tasks:
+
+ # NOTE: Tests do not use the ansible dig lookup, because that executes on
+ # the host running ansible-playbook, not the target host.
+
+ # Lint flags the checks as they execute every time, skip this with 'noqa 301'
+
+ - name: Check for A record
+ command: # noqa 301
+ cmd: "dig gw.example.com @127.0.0.1"
+ register: a_dig
+ failed_when: "'gw.example.com.\t\t3600\tIN\tA\t192.168.1.1' not in a_dig.stdout"
+
+ - name: Check for NS record
+ command: # noqa 301
+ cmd: "dig ns example.com @127.0.0.1"
+ register: ns_dig
+ failed_when: "'example.com.\t\t3600\tIN\tNS\tgw.example.com.' not in ns_dig.stdout"
+
+ - name: Check for CNAME record
+ command: # noqa 301
+ cmd: "dig lpr.example.com @127.0.0.1"
+ register: cn_dig
+ failed_when: "'lpr.example.com.\t3600\tIN\tCNAME\tprinter.example.com.' not in cn_dig.stdout"
diff --git a/tasks/Debian.yml b/tasks/Debian.yml
new file mode 100644
index 0000000..7f2e108
--- /dev/null
+++ b/tasks/Debian.yml
@@ -0,0 +1,12 @@
+---
+# nsd tasks/Debian.yml
+#
+# SPDX-FileCopyrightText: © 2020 Open Networking Foundation <support@opennetworking.org>
+# SPDX-License-Identifier: Apache-2.0
+
+- name: Install NSD packages (Debian)
+ apt:
+ name: "nsd"
+ state: "present"
+ update_cache: true
+ cache_valid_time: 3600
diff --git a/tasks/OpenBSD.yml b/tasks/OpenBSD.yml
new file mode 100644
index 0000000..e64f33f
--- /dev/null
+++ b/tasks/OpenBSD.yml
@@ -0,0 +1,7 @@
+---
+# nsd tasks/OpenBSD.yml
+#
+# SPDX-FileCopyrightText: © 2020 Open Networking Foundation <support@opennetworking.org>
+# SPDX-License-Identifier: Apache-2.0
+
+# nothing to do here, OpenBSD already has NSD installed in base
diff --git a/tasks/main.yml b/tasks/main.yml
new file mode 100644
index 0000000..68af1d5
--- /dev/null
+++ b/tasks/main.yml
@@ -0,0 +1,58 @@
+---
+# nsd tasks/main.yml
+#
+# SPDX-FileCopyrightText: © 2020 Open Networking Foundation <support@opennetworking.org>
+# SPDX-License-Identifier: Apache-2.0
+
+- name: include OS-specific vars
+ include_vars: "{{ ansible_os_family }}.yml"
+
+- name: include OS-specific tasks
+ include_tasks: "{{ ansible_os_family }}.yml"
+
+- name: Create nsd zones directory
+ file:
+ name: "{{ nsd_zones_dir }}"
+ state: directory
+ mode: 0755
+ owner: root
+ group: "{{ nsd_groupname }}"
+
+- name: Create nsd.conf configuration file from template
+ template:
+ src: "nsd.conf.j2"
+ dest: "{{ nsd_conf_dir }}/nsd.conf"
+ owner: root
+ group: "{{ nsd_groupname }}"
+ mode: 0644
+ backup: true
+ validate: "nsd-checkconf %s"
+ notify:
+ - restart-nsd
+
+- name: Create DNS forward zonefiles from template
+ template:
+ src: zone.forward.j2
+ dest: "{{ nsd_zones_dir }}/{{ item.key }}.forward"
+ mode: 0644
+ owner: root
+ group: "{{ nsd_groupname }}"
+ validate: "nsd-checkzone {{ item.key }} %s"
+ with_dict: "{{ dns_zones }}"
+ notify:
+ - reload-nsd
+
+- name: Create DNS reverse zonefiles from template
+ template:
+ src: zone.reverse.j2
+ dest: "{{ nsd_zones_dir }}/{{ item.key }}.reverse"
+ mode: 0644
+ owner: root
+ group: "{{ nsd_groupname }}"
+ validate: "nsd-checkzone {{ item.value.ip_range | unbound_revdns }} %s"
+ with_dict: "{{ dns_zones }}"
+ notify:
+ - reload-nsd
+
+- name: Flush handlers as listen addresses can conflict with unbound
+ meta: flush_handlers
diff --git a/templates/nsd.conf.j2 b/templates/nsd.conf.j2
new file mode 100644
index 0000000..ff5b39f
--- /dev/null
+++ b/templates/nsd.conf.j2
@@ -0,0 +1,31 @@
+{#
+SPDX-FileCopyrightText: © 2020 Open Networking Foundation <support@opennetworking.org>
+SPDX-License-Identifier: Apache-2.0
+#}
+# nsd templates/nsd.conf.j2 - {{ ansible_managed }}
+
+server:
+ hide-version: yes
+
+## bind to a specific address/port
+ ip-address: {{ nsd_ip4 }}
+ ip4-only: yes
+ port: {{ nsd_port }}
+
+ server-count: 1
+ zonesdir: {{ nsd_zones_dir }}
+
+remote-control:
+ control-enable: yes
+
+# zonefiles to load
+{% for key, value in dns_zones.items() %}
+zone:
+ name: {{ key }}
+ zonefile: {{ key }}.forward
+
+zone:
+ name: {{ value.ip_range | unbound_revdns }}
+ zonefile: {{ key }}.reverse
+
+{% endfor %}
diff --git a/templates/zone.forward.j2 b/templates/zone.forward.j2
new file mode 100644
index 0000000..1a10187
--- /dev/null
+++ b/templates/zone.forward.j2
@@ -0,0 +1,49 @@
+{#
+SPDX-FileCopyrightText: © 2020 Open Networking Foundation <support@opennetworking.org>
+SPDX-License-Identifier: Apache-2.0
+#}
+;# nsd forward zone, templates/zone.forward.j2 - {{ ansible_managed }}
+
+$ORIGIN {{ item.key }}. ; default zone domain
+$TTL {{ item.ttl | default(nsd_default_ttl) }} ; default time to live
+
+@ IN SOA {{ item.value.ns | first }} admin.{{ item.key }}. (
+ {{ item.value.serial | default(ansible_date_time.epoch) }} ; Serial, must be incremented every time you change this file
+ 3600 ; Refresh [1hr]
+ 600 ; Retry [10m]
+ 3600 ; Expire [1hr]
+ 60 ; Min TTL [1m]
+ )
+
+; NameServers
+{% for ns in item.value.ns %}
+ IN NS {{ ns }}
+{% endfor %}
+{% if item.value.a is defined %}
+
+; A records
+{% for name, ip4 in item.value.a.items() %}
+{{ name }} IN A {{ ip4 }}
+{% endfor %}
+{% endif %}
+{% if item.value.cname is defined %}
+
+; CNAME records
+{% for name, target in item.value.cname.items() %}
+{{ name }} IN CNAME {{ target }}
+{% endfor %}
+{% endif %}
+{% if item.srv is defined %}
+
+; SRV records
+{% for name, val in item.value.srv.items() %}
+{{ name }} {{ val.ttl | default(nsd_default_ttl) }} IN SRV {{ val.priority | default(10) }} {{ val.port }} {{ val.target }}
+{% endfor %}
+{% endif %}
+{% if item.value.txt is defined %}
+
+; TXT records
+{% for name, val in item.value.txt.items() %}
+{{ name }} IN TXT "{{ val }}"
+{% endfor %}
+{% endif %}
diff --git a/templates/zone.reverse.j2 b/templates/zone.reverse.j2
new file mode 100644
index 0000000..a0e5ecc
--- /dev/null
+++ b/templates/zone.reverse.j2
@@ -0,0 +1,23 @@
+{#
+SPDX-FileCopyrightText: © 2020 Open Networking Foundation <support@opennetworking.org>
+SPDX-License-Identifier: Apache-2.0
+#}
+;# nsd reverse zone, templates/zone.reverse.j2 - {{ ansible_managed }}
+
+$ORIGIN {{ item.key }}. ; default zone domain
+$TTL {{ item.value.ttl | default(nsd_default_ttl) }} ; default time to live
+
+{{ item.value.ip_range | unbound_revdns }} IN SOA {{ item.value.ns | first }} admin.{{ item.key }}. (
+ {{ item.value.serial | default(ansible_date_time.epoch) }} ; Serial, must be incremented every time you change this file
+ 3600 ; Refresh [1hr]
+ 600 ; Retry [10m]
+ 3600 ; Expire [1hr]
+ 60 ; Min TTL [1m]
+ )
+{% if item.value.a is defined %}
+
+; PTR records
+{% for name, ip4 in item.value.a.items() %}
+{{ ip4 | ipaddr('revdns')}} IN PTR {{ name }}
+{% endfor %}
+{% endif %}
diff --git a/vars/Debian.yml b/vars/Debian.yml
new file mode 100644
index 0000000..a8a5076
--- /dev/null
+++ b/vars/Debian.yml
@@ -0,0 +1,16 @@
+---
+# nsd vars/Debian.yml
+#
+# SPDX-FileCopyrightText: © 2020 Open Networking Foundation <support@opennetworking.org>
+# SPDX-License-Identifier: Apache-2.0
+#
+# NOTE: Only put platform/OS-specific variables in this file.
+# Put all other variables in the 'defaults/main.yml' file.
+
+nsd_service: "nsd"
+
+nsd_username: "nsd"
+nsd_groupname: "nsd"
+
+nsd_conf_dir: "/etc/nsd"
+nsd_zones_dir: "/var/lib/nsd/zones"
diff --git a/vars/OpenBSD.yml b/vars/OpenBSD.yml
new file mode 100644
index 0000000..0849af3
--- /dev/null
+++ b/vars/OpenBSD.yml
@@ -0,0 +1,16 @@
+---
+# nsd vars/OpenBSD.yml
+#
+# SPDX-FileCopyrightText: © 2020 Open Networking Foundation <support@opennetworking.org>
+# SPDX-License-Identifier: Apache-2.0
+#
+# NOTE: Only put platform/OS-specific variables in this file.
+# Put all other variables in the 'defaults/main.yml' file.
+
+nsd_service: "nsd"
+
+nsd_username: "_nsd"
+nsd_groupname: "_nsd"
+
+nsd_conf_dir: "/var/nsd/etc"
+nsd_zones_dir: "/var/nsd/zones"