Merge branch 'ipv6' into ansible-2.10

ansible.cfg

@@ -33,3 +33,6 @@ become_ask_pass = True
 # TO know what changed
 always = yes
 
+
+[ssh_connection]
+pipelining = True

group_vars/all/vars.yml

@@ -50,8 +50,8 @@ dns_host_suffix_backup: 153
 backup_dns_servers:
   - "80.67.169.12" # French Data Network (FDN) (ns0.fdn.fr)
 
-# Misc
-mtu: 1400
+# Finally raised!
+mtu: 1500
 
 subnet_ids:
   ap: "14{{ apartment_block_id }}"
@@ -78,3 +78,9 @@ radius_pg_re2o_ro_password: "{{ vault_re2o_db_user_passwords.re2o_ro }}"
 
 
 apartment_block_dhcp: "{{ apartment_block }}"
+
+
+
+# Careful, this is not byte-aligned, just nibble-aligned (RIPE gave us a /28).
+# However, we ALWAYS keep the trailing 0 to have byte alignment.
+ipv6_base_prefix: "2a09:6840"

network.yml

@@ -22,9 +22,12 @@
 
 
 # Déploiement du service re2o aurore-firewall et keepalived
+# radvd: IPv6 SLAAC (/64 subnets, private IPs).
+#   Must NOT be on routeur-aurore-*, or will with DHCPv6!
 - hosts: ~routeur-(pacaterie|edc|fleming|gs).*\.adm\.auro\.re
   roles:
     - router
+    - radvd
 
 
 # Radius (backup only for now)

nuke-radius-dbs.yml

@@ -0,0 +1,7 @@
+#!/usr/bin/env ansible-playbook
+---
+- hosts: ~radius-(edc|fleming|pacaterie|gs).*
+  roles:
+    - radius
+  vars:
+    nuke_radius: true

roles/baseconfig/templates/resolv.conf

@@ -1,3 +1,4 @@
 domain adm.auro.re
 nameserver 10.128.0.253
+nameserver 2a09:6840:128::253
 nameserver 80.67.169.12

roles/radius/tasks/main.yml

@@ -15,7 +15,7 @@
   git:
     repo: "https://gitlab.federez.net/re2o/re2o.git"
     dest: "/var/www/re2o"
-    version: "master_freeradius_python3"
+    version: "dev"
     force: true
 
 - name: Template local re2o settings
@@ -118,6 +118,29 @@
     password: "{{ radius_pg_replication_password }}"
   become_user: postgres
 
+
+- name: Nuking - Stop freeradius
+  systemd:
+    name: freeradius
+    state: stopped
+  when: nuke_radius|bool
+
+- name: Nuking - Remove old subscription if it exists
+  community.general.postgresql_subscription:
+    name: "re2o_subscription_{{ inventory_hostname_short | replace('-','_') }}"
+    db: re2o
+    state: absent
+  become_user: postgres
+  when: nuke_radius|bool
+  ignore_errors: yes
+
+- name: Nuking - Destroy old local DB if it exists
+  community.general.postgresql_db:
+    name: re2o
+    state: absent
+  become_user: postgres
+  when: nuke_radius|bool
+
 - name: Create local DB
   community.general.postgresql_db:
     name: re2o
@@ -128,7 +151,6 @@
     lc_ctype: 'fr_FR.UTF-8'
   become_user: postgres
 
-
 - name: Dump radius re2o PostgreSQL database schema from master
   community.general.postgresql_db:
     name: re2o

roles/radvd/handlers/main.yml

@@ -0,0 +1,4 @@
+- name: restart radvd
+  systemd:
+    state: restarted
+    name: radvd

roles/radvd/tasks/main.yml

@@ -0,0 +1,22 @@
+---
+
+
+# Warning: radvd installation seems to fail if the configuration
+# file doesn't already exist when the package is installed,
+# so the order is important.
+- name: Configure radvd
+  template:
+    src: radvd.conf.j2
+    dest: /etc/radvd.conf
+    mode: 0644
+  notify: restart radvd
+  tags:
+    - radconf
+
+- name: Install radvd
+  apt:
+    update_cache: true
+    name: radvd
+    state: present
+  notify: restart radvd
+

roles/radvd/templates/radvd.conf.j2

@@ -0,0 +1,81 @@
+# -*- mode: conf-unix; coding: utf-8 -*-
+
+##
+# Bornes Wi-Fi
+##
+
+# Not deployed yet!
+# Need to add an interface for this VLAN on "routeur-*" hosts.
+
+# interface ens19 { # XXX - FIX THE INTERFACE NAME
+#     AdvSendAdvert on;
+#     AdvLinkMTU {{ mtu }};
+#     AdvDefaultPreference high;
+#     MaxRtrAdvInterval 30;
+#
+#     AdvRASrcAddress {
+#         {{ ipv6_base_prefix }}:{{ subnet_ids.ap }}::0:250; # Unifi controller
+#     };
+#
+#     prefix {{ ipv6_base_prefix }}:{{ subnet_ids.ap }}::/64  {
+#         AdvRouterAddr on;
+#     };
+# 
+#     # La zone DNS
+#     DNSSL borne.auro.re {};
+# 
+#     # Les DNS récursifs
+#     RDNSS {{ ipv6_base_prefix }}:{{ subnet_ids.ap }}::{{ dns_host_suffix_main }} {};
+#     RDNSS {{ ipv6_base_prefix }}:{{ subnet_ids.ap }}::{{ dns_host_suffix_backup }} {};
+# };
+
+##
+# Utilisateurs filaire
+##
+interface ens20 {
+    AdvSendAdvert on;
+    AdvLinkMTU {{ mtu }};
+    AdvDefaultPreference high;
+    MaxRtrAdvInterval 30;
+
+    AdvRASrcAddress {
+        fe80::1; # link-local virtual IP used with keepalived
+    };
+
+    prefix {{ ipv6_base_prefix }}:{{ subnet_ids.users_wired }}::/64  {
+        AdvRouterAddr on;
+    };
+
+    DNSSL fil.{{ apartment_block_dhcp }}.auro.re {}; # TODO: fix this shitty workaround.
+
+    RDNSS {{ ipv6_base_prefix }}:{{ subnet_ids.users_wired }}::{{ dns_host_suffix_main }} {};
+    RDNSS {{ ipv6_base_prefix }}:{{ subnet_ids.users_wired }}::{{ dns_host_suffix_backup }} {};
+};
+
+
+##
+# Utilisateurs wifi
+##
+interface ens21 {
+    AdvSendAdvert on;
+    AdvLinkMTU {{ mtu }};
+    AdvDefaultPreference high;
+    MaxRtrAdvInterval 30;
+
+    AdvRASrcAddress {
+        fe80::1;
+    };
+
+    prefix {{ ipv6_base_prefix }}:{{ subnet_ids.users_wifi }}::/64  {
+        AdvRouterAddr on;
+    };
+
+    DNSSL wifi.{{ apartment_block_dhcp }}.auro.re {}; # TODO: fix this shitty workaround.
+
+    RDNSS {{ ipv6_base_prefix }}:{{ subnet_ids.users_wifi }}::{{ dns_host_suffix_main }} {};
+    RDNSS {{ ipv6_base_prefix }}:{{ subnet_ids.users_wifi }}::{{ dns_host_suffix_backup }} {};
+};
+
+
+
+# For public IPs: will use DHCPv6, deployed on routeur-aurore alone.

roles/router/tasks/main.yml

@@ -6,6 +6,12 @@
     value: '1'
     sysctl_set: yes
 
+- name: Enable IPv6 packet forwarding
+  ansible.posix.sysctl:
+    name: net.ipv6.conf.all.forwarding
+    value: '1'
+    sysctl_set: yes
+
 - name: Install aurore-firewall (re2o-service)
   import_role:
     name: re2o-service

roles/router/templates/firewall_config.py

@@ -24,8 +24,8 @@
 
 ### Give me a role
 
-# routeur4 = routeur IPv4
-role = ['routeur4']
+# previously: routeur4 = routeur IPv4
+role = ['routeur']
 
 
 ### Specify each interface role

roles/router/templates/keepalived.conf

@@ -2,12 +2,12 @@ global_defs {
   notification_email {
     monitoring.aurore@lists.crans.org
   }
-  notification_email_from routeur-edc-backup@auro.re
+  notification_email_from routeur-{{ apartment_block }}{% if 'backup' in inventory_hostname %}-backup{% endif %}@auro.re
   smtp_server smtp.crans.org
 }
 
 
-vrrp_instance VI_ROUT_{{ apartment_block }} {
+vrrp_instance VI_ROUT_{{ apartment_block }}_IPv4 {
   {% if 'backup' in inventory_hostname %}
   state BACKUP
   priority 100
@@ -21,12 +21,11 @@ vrrp_instance VI_ROUT_{{ apartment_block }} {
   interface ens18
 
   # Shared by MASTER and BACKUP
-  virtual_router_id {{ apartment_block_id }}
+  virtual_router_id 4{{ apartment_block_id }}
 
   # Timeout in seconds before failover kicks in.
   advert_int 2
 
-
   # Used to authenticate VRRP communication between master and backup.
   authentication {
     auth_type PASS
@@ -39,19 +38,72 @@ vrrp_instance VI_ROUT_{{ apartment_block }} {
         # Routing subnet
         10.129.{{ apartment_block_id }}.254/16 brd 10.129.255.255 dev ens19 scope global
 
-        # Public subnet: wired
+
+        # NATed subnet: wired
         45.66.108.25{{ apartment_block_id }}/24 brd 45.66.108.255 dev ens19 scope global
-        # Public subnet: wifi
+
+        # NATed subnet: wifi
         45.66.109.25{{ apartment_block_id }}/24 brd 45.66.109.255 dev ens19 scope global
 
         # Wired
         10.{{ subnet_ids.users_wired }}.0.254/16 brd 10.{{ subnet_ids.users_wired }}.255.255 dev ens20 scope global
+
         # Wifi
         10.{{ subnet_ids.users_wifi }}.0.254/16 brd 10.{{ subnet_ids.users_wifi }}.255.255 dev ens21 scope global
    }
 
+
   virtual_routes {
         # 10.129.0.1 is Yggdrasil
         src 10.129.{{ apartment_block_id }}.254 to 0.0.0.0/0 via 10.129.0.1 dev ens19
   }
 }
+
+vrrp_instance VI_ROUT_{{ apartment_block }}_IPv6 {
+  {% if 'backup' in inventory_hostname %}
+  state BACKUP
+  priority 100
+  {% else %}
+  state MASTER
+  priority 150
+  {% endif %}
+
+
+  # Interface used for VRRP communication.
+  interface ens18
+
+  # Shared by MASTER and BACKUP
+  virtual_router_id 6{{ apartment_block_id }}
+
+  # Timeout in seconds before failover kicks in.
+  advert_int 2
+
+  # Used to authenticate VRRP communication between master and backup.
+  authentication {
+    auth_type PASS
+    auth_pass {{ keepalived_password }}
+  }
+
+  smtp_alert
+
+  virtual_ipaddress {
+        # Routing subnet
+        fe80::1/64 dev ens19 scope global
+        {{ ipv6_base_prefix }}:129::{{ apartment_block_id }}:254/64 dev ens19 scope global
+
+        # Wired
+        fe80::1/64 dev ens20 scope global
+
+        # Wifi
+        fe80::1/64 dev ens21 scope global
+   }
+
+
+  virtual_routes {
+        # For IPv6, the master router is routeur-aurore, NOT yggdrasil,
+        # because yggdrasil doesn't support BGPv6 announcements.
+        src {{ ipv6_base_prefix }}:129::{{ apartment_block_id }}:254 to ::/0 via {{ ipv6_base_prefix }}:129::0:254 dev ens19
+  }
+}
+
+

roles/unbound/templates/recursive.conf.j2

@@ -11,20 +11,32 @@ server:
     logfile: "/var/log/unbound/unbound.log"
 
     do-ip4: yes
-    # FIXME: IPv6 deployment... someday...
-    do-ip6: no
+    do-ip6: yes
 
     # IP addresses on which to listen.
+    #
+    # Note: dns_host_suffix is dynamically set in this role's tasks,
+    # and changes depending on whether we're handling the main or backup
+    # recursive DNS node.
+    
+    # IPv4
     interface: 10.{{ subnet_ids.ap }}.0.{{ dns_host_suffix }}
     interface: 10.{{ subnet_ids.users_wired }}.0.{{ dns_host_suffix }}
     interface: 10.{{ subnet_ids.users_wifi }}.0.{{ dns_host_suffix }}
 
+
+    # IPv6
+    interface: {{ ipv6_base_prefix }}:{{ subnet_ids.ap }}::0:{{ dns_host_suffix }}
+    interface: {{ ipv6_base_prefix }}:{{ subnet_ids.users_wired }}::0:{{ dns_host_suffix }}
+    interface: {{ ipv6_base_prefix }}:{{ subnet_ids.users_wifi }}::0:{{ dns_host_suffix }}
+
  
     # By default, anything other than localhost is refused.
     # Whitelist some subnets:
     access-control: 10.{{ subnet_ids.ap }}.0.0/16 allow
     access-control: 10.{{ subnet_ids.users_wired }}.0.0/16 allow
     access-control: 10.{{ subnet_ids.users_wifi }}.0.0/16 allow
+    access-control: {{ ipv6_base_prefix }}::/32 allow # Fuck it... :)
 
     num-threads: {{ ansible_processor_vcpus }}