Rework Ansible to support ipv6

os/config/production

@@ -1,4 +0,0 @@
-[cluster_nodes]
-veterini ansible_host=fbx-rennes2.machine.deuxfleurs.fr ansible_port=110 ansible_user=root public_ip=192.168.1.2 private_ip=192.168.1.2 interface=eno1 dns_server=80.67.169.40
-silicareux ansible_host=fbx-rennes2.machine.deuxfleurs.fr ansible_port=111 ansible_user=root public_ip=192.168.1.3 private_ip=192.168.1.3 interface=eno1 dns_server=80.67.169.40
-wonse ansible_host=fbx-rennes2.machine.deuxfleurs.fr ansible_port=112 ansible_user=root public_ip=192.168.1.4 private_ip=192.168.1.4 interface=eno1 dns_server=80.67.169.40

os/config/production.yml

@@ -0,0 +1,31 @@
+cluster_nodes:
+  hosts:
+    veterini:
+      ansible_host: fbx-rennes2.machine.deuxfleurs.fr
+      ansible_port: 110
+      ansible_user: root 
+      ipv4: 192.168.1.2
+      ipv6: 2a01:e35:2fdc:dbe0::2
+      interface: eno1
+      dns_server: 80.67.169.40
+      ansible_python_interpreter: python3
+
+    silicareux:
+      ansible_host: fbx-rennes2.machine.deuxfleurs.fr 
+      ansible_port: 111
+      ansible_user: root 
+      ipv4: 192.168.1.3 
+      ipv6: 2a01:e35:2fdc:dbe0::3
+      interface: eno1 
+      dns_server: 80.67.169.40
+      ansible_python_interpreter: python3
+
+    wonse:
+      ansible_host: fbx-rennes2.machine.deuxfleurs.fr
+      ansible_port: 112
+      ansible_user: root
+      ipv4: 192.168.1.4
+      ipv6: 2a01:e35:2fdc:dbe0::4
+      interface: eno1
+      dns_server: 80.67.169.40
+      ansible_python_interpreter: python3

os/config/roles/consul/tasks/main.yml

@@ -1,6 +1,6 @@
 - name: "Set consul version"
   set_fact:
-    consul_version: 1.8.0
+    consul_version: 1.8.4
 
 - name: "Download and install Consul for x86_64"
   unarchive:
@@ -21,6 +21,3 @@
 
 - name: "Enable consul systemd service at boot"
   service: name=consul state=started enabled=yes daemon_reload=yes
-
-- name: "Deploy resolv.conf to use Consul"
-  template: src=resolv.conf.j2 dest=/etc/resolv.conf

os/config/roles/consul/templates/consul.json.j2

@@ -1,14 +1,14 @@
 {
   "data_dir": "/var/lib/consul",
   "bind_addr": "0.0.0.0",
-  "advertise_addr": "{{ public_ip }}",
+  "advertise_addr": "{{ ipv4 }}",
   "addresses": {
     "dns": "0.0.0.0",
     "http": "0.0.0.0"
   },
   "retry_join": [
    {% for selected_host in groups['cluster_nodes']|reject("sameas", ansible_fqdn) %}{# @FIXME: Reject doesn't work #}
-     "{{ hostvars[selected_host]['private_ip'] }}" {{ "," if not loop.last else "" }}
+     "{{ hostvars[selected_host]['ipv4'] }}" {{ "," if not loop.last else "" }}
    {% endfor %}
   ],
   "bootstrap_expect": 3,

os/config/roles/consul/templates/resolv.conf.j2

@@ -1,2 +1,2 @@
-nameserver {{ private_ip }}
+nameserver {{ ipv4 }}
 nameserver {{ dns_server }}

os/config/roles/network/files/rules.v6

@@ -1,12 +0,0 @@
-# WARNING!! When rules.{v4,v6} are changed, the whole iptables configuration is reloaded.
-# This creates issues with Docker, which injects its own configuration in iptables when it starts.
-# In practice, most (all?) containers will break if rules.{v4,v6} are changed,
-# and docker will have to be restared.
-
-
-*filter
-:INPUT DROP [0:0]
-:FORWARD DROP [0:0]
-:OUTPUT ACCEPT [0:0]
-COMMIT
-

os/config/roles/network/tasks/main.yml

@@ -1,8 +1,11 @@
 - name: "Deploy iptablesv4 configuration"
-  template: src=rules.v4.j2 dest=/etc/iptables/rules.v4
+  template: src=rules.v4 dest=/etc/iptables/rules.v4
 
 - name: "Deploy iptablesv6 configuration"
-  copy: src=rules.v6 dest=/etc/iptables/rules.v6
+  template: src=rules.v6 dest=/etc/iptables/rules.v6
+
+- name: "Deploy systemd-networkd configuration"
+  template: src=en.network dest=/etc/systemd/network/en.network
 
 - name: "Activate IP forwarding"
   sysctl:

os/config/roles/network/templates/en.network

@@ -0,0 +1,9 @@
+[Match]
+Name={{ interface }}
+
+[Network]
+Address={{ ipv4 }}/24
+Address={{ ipv6 }}/64
+Gateway=192.168.1.254
+DNS={{ ipv4 }}
+DNS={{ dns_server }}

os/config/roles/network/templates/rules.v4

@@ -3,15 +3,15 @@
 :FORWARD DROP [0:0]
 :OUTPUT ACCEPT [0:0]
 
+# Debug
+-A INPUT -p icmp -j ACCEPT
+
 # Administration
 -A INPUT -p tcp  --dport 22 -j ACCEPT
 
 # Cluster
--A INPUT -s 192.168.1.254 -j ACCEPT
--A INPUT -s 82.253.205.190 -j ACCEPT
 {% for selected_host in groups['cluster_nodes'] %}
--A INPUT -s {{ hostvars[selected_host]['public_ip'] }} -j ACCEPT
--A INPUT -s {{ hostvars[selected_host]['private_ip'] }} -j ACCEPT
+-A INPUT -s {{ hostvars[selected_host]['ipv4'] }} -j ACCEPT
 {% endfor %}
 
 # Local

os/config/roles/network/templates/rules.v6

@@ -0,0 +1,38 @@
+*filter
+:INPUT DROP [0:0]
+:FORWARD DROP [0:0]
+:OUTPUT ACCEPT [0:0]
+
+# Debug
+-A INPUT -p icmp -j ACCEPT
+
+# Administration
+-A INPUT -p tcp --dport 22 -j ACCEPT
+
+# Cluster
+{% for selected_host in groups['cluster_nodes'] %}
+-A INPUT -s {{ hostvars[selected_host]['ipv6'] }} -j ACCEPT
+{% endfor %}
+
+# Local
+-A INPUT -i docker0 -j ACCEPT
+-A INPUT -s ::1/128 -j ACCEPT
+-A INPUT -m conntrack --cstate ESTABLISHED,RELATED -j ACCEPT
+
+COMMIT
+
+*nat
+:PREROUTING ACCEPT [0:0]
+:INPUT ACCEPT [0:0]
+:OUTPUT ACCEPT [0:0]
+:POSTROUTING ACCEPT [0:0]
+COMMIT
+
+*mangle
+:PREROUTING ACCEPT [0:0]
+:INPUT ACCEPT [0:0]
+:FORWARD ACCEPT [0:0]
+:OUTPUT ACCEPT [0:0]
+:POSTROUTING ACCEPT [0:0]
+COMMIT
+

os/config/roles/nomad/tasks/main.yml

@@ -1,6 +1,6 @@
 - name: "Set nomad version"
   set_fact:
-    nomad_version: 0.12.0-beta2
+    nomad_version: 0.12.6
 
 - name: "Download and install Nomad for x86_64"
   unarchive:

os/config/roles/nomad/templates/nomad.hcl.j2

@@ -5,9 +5,9 @@ addresses {
 }
 
 advertise {
-  http = "{{ public_ip }}"
-  rpc = "{{ public_ip }}"
-  serf = "{{ public_ip }}"
+  http = "{{ ipv4 }}"
+  rpc = "{{ ipv4 }}"
+  serf = "{{ ipv4 }}"
 }
 
 data_dir = "/var/lib/nomad"

os/config/roles/storage/tasks/main.yml

@@ -48,7 +48,7 @@
       nfs.export-volumes: "off"
       cluster.lookup-optimize: "on"
 
-    cluster: "{% for selected_host in groups['cluster_nodes'] %}{{ hostvars[selected_host]['private_ip'] }}{{ ',' if not loop.last else '' }}{% endfor %}"
+    cluster: "{% for selected_host in groups['cluster_nodes'] %}{{ hostvars[selected_host]['ipv4'] }}{{ ',' if not loop.last else '' }}{% endfor %}"
   run_once: true
 
 - name: "Create mountpoint"
@@ -61,7 +61,7 @@
   tags: gluster-fstab
   mount:
     path: /mnt/glusterfs
-    src: "{{ private_ip }}:/donnees"
+    src: "{{ ipv4 }}:/donnees"
     fstype: glusterfs
     opts: "defaults,_netdev,noauto,x-systemd.automount"
     state: present