From 05378fc81c5b35d6e0c17de3216846eacc100bd7 Mon Sep 17 00:00:00 2001
From: pgrondek <pgrondek@gmail.com>
Date: Fri, 5 Jun 2020 16:33:20 +0200
Subject: [PATCH] Add hostfile for docker-cluster

---
 inventory/hosts.yml                         |  3 +++
 roles/docker-cluster/tasks/hostfile.yml     |  6 ++++++
 roles/docker-cluster/tasks/main.yml         |  2 ++
 roles/docker-cluster/templates/etc/hosts.j2 | 20 ++++++++++++++++++++
 roles/docker-cluster/vars/main.yml          |  6 ++++++
 5 files changed, 37 insertions(+)
 create mode 100644 roles/docker-cluster/tasks/hostfile.yml
 create mode 100644 roles/docker-cluster/templates/etc/hosts.j2
 create mode 100644 roles/docker-cluster/vars/main.yml

diff --git a/inventory/hosts.yml b/inventory/hosts.yml
index fe13847..f075127 100644
--- a/inventory/hosts.yml
+++ b/inventory/hosts.yml
@@ -7,7 +7,10 @@ all:
     docker_cluster:
       hosts:
         node-01.lan:
+          ansible_host: 192.168.50.101
         node-02.lan:
+          ansible_host: 192.168.50.102
         node-03.lan:
+          ansible_host: 192.168.50.103
         node-x86.lan:
           ansible_host: 192.168.50.186
diff --git a/roles/docker-cluster/tasks/hostfile.yml b/roles/docker-cluster/tasks/hostfile.yml
new file mode 100644
index 0000000..52f9f13
--- /dev/null
+++ b/roles/docker-cluster/tasks/hostfile.yml
@@ -0,0 +1,6 @@
+---
+- name: Create hostfile
+  become: yes
+  template:
+    src: etc/hosts.j2
+    dest: /etc/hosts
diff --git a/roles/docker-cluster/tasks/main.yml b/roles/docker-cluster/tasks/main.yml
index b4af37e..d977b2b 100644
--- a/roles/docker-cluster/tasks/main.yml
+++ b/roles/docker-cluster/tasks/main.yml
@@ -9,3 +9,5 @@
 
 - import_tasks: hearthbeat.yml
 
+- import_tasks: hostfile.yml
+
diff --git a/roles/docker-cluster/templates/etc/hosts.j2 b/roles/docker-cluster/templates/etc/hosts.j2
new file mode 100644
index 0000000..cf22726
--- /dev/null
+++ b/roles/docker-cluster/templates/etc/hosts.j2
@@ -0,0 +1,20 @@
+127.0.0.1   localhost
+127.0.0.1   {{ ansible_hostname }} {{ ansible_hostname }}.{{ ansible_dns.search[0] }}
+
+# IPs for nfs
+{{ nfs.addr }}    {% for hostname in nfs.hostname %}{{ hostname }} {% endfor %}
+
+# IPs for heartbeat
+{% for host in play_hosts %}
+{% if ansible_hostname != hostvars[host].ansible_hostname %}
+{{ hostvars[host].ansible_host }}   {{ hostvars[host].ansible_hostname }}
+{% endif %}
+{% endfor %}
+
+# The following lines are desirable for IPv6 capable hosts
+::1     ip6-localhost ip6-loopback
+fe00::0 ip6-localnet
+ff00::0 ip6-mcastprefix
+ff02::1 ip6-allnodes
+ff02::2 ip6-allrouters
+ff02::3 ip6-allhosts
diff --git a/roles/docker-cluster/vars/main.yml b/roles/docker-cluster/vars/main.yml
new file mode 100644
index 0000000..42028fa
--- /dev/null
+++ b/roles/docker-cluster/vars/main.yml
@@ -0,0 +1,6 @@
+---
+nfs:
+  hostname:
+    - bender
+    - bender.lan
+  addr: 192.168.50.3