Initial import

15 files changed, 297 insertions, 0 deletions

diff --git a/roles/openvpn/README b/roles/openvpn/README
new file mode 100644
index 0000000..9c64b0d
--- /dev/null
+++ b/roles/openvpn/README
@@ -0,0 +1,12 @@
+Dependencies:
+ - Runs on all OpenShift nodes
+
+Parameters:
+ - ands_openshift_lb: The load balancer which OpenVPN clients (non-master nodes) will be using to get into the network
+ 
+Facts:
+
+Actions:
+ - Sets up and configures OpenVPN servers & clients
+ - Opens firewall port
+
diff --git a/roles/openvpn/defaults/main.yml b/roles/openvpn/defaults/main.yml
new file mode 100644
index 0000000..513936a
--- /dev/null
+++ b/roles/openvpn/defaults/main.yml
@@ -0,0 +1,15 @@
+openvpn_port: 1194
+openvpn_dir: "/etc/openvpn"
+openvpn_config: "katrin"
+openvpn_config_file: "{{openvpn_dir}}/{{openvpn_config}}.conf"
+openvpn_keydir: "{{openvpn_dir}}/keys_{{openvpn_config}}"
+openvpn_ccdir: "{{openvpn_dir}}/ccd_{{openvpn_config}}"
+openvpn_service: "openvpn@{{openvpn_config}}.service"
+
+openvpn_lb: "{{ ands_openshift_lb }}"
+openvpn_servers: "masters"
+
+
+openvpn_server_id: "{{ (openvpn_servers in group_names) | ternary(groups[openvpn_servers].index((openvpn_servers in group_names) | ternary(inventory_hostname, groups[openvpn_servers][0])), -1) }}"
+openvpn_subnet_id: "{{ (katrin_openvpn_subnet_offset | int) + (openvpn_server_id | int) }}"
+openvpn_net: "{{ katrin_openvpn_network | ipsubnet(katrin_openvpn_subnet_bits, openvpn_subnet_id) }}"
diff --git a/roles/openvpn/files/ca/ca.crt b/roles/openvpn/files/ca/ca.crt
new file mode 100644
index 0000000..a37743b
--- /dev/null
+++ b/roles/openvpn/files/ca/ca.crt
@@ -0,0 +1,22 @@
+-----BEGIN CERTIFICATE-----
+MIIDojCCAwugAwIBAgIJAMIDvuFyaww1MA0GCSqGSIb3DQEBBQUAMIGTMQswCQYD
+VQQGEwJOTzERMA8GA1UECBMIbWlkZ2FhcmQxETAPBgNVBAcTCG1pZGdhYXJkMREw
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+MSgwJgYJKoZIhvcNAQkBFhlkYXJrc29mdEBkc2lkZS5keW5kbnMub3JnggkAwgO+
+4XJrDDUwDAYDVR0TBAUwAwEB/zANBgkqhkiG9w0BAQUFAAOBgQBey4alwOjkx6LG
+csNMOeofpSVr79muQALum9rdsZVBb93x9ygSJJ8ygCgolXDGF4uAGX31kbYtiANY
+rXef9gNWZLlMt2NPcJzV53hbXnFDYOSpFwUCFwvBAFkhIv4r1TjqxHSDiRdTda31
+0J1sESMtMZook/QKNx+46CQrjUGWzA==
+-----END CERTIFICATE-----
diff --git a/roles/openvpn/files/ca/ca.key b/roles/openvpn/files/ca/ca.key
new file mode 100644
index 0000000..f1df0c4
--- /dev/null
+++ b/roles/openvpn/files/ca/ca.key
@@ -0,0 +1,50 @@
+$ANSIBLE_VAULT;1.1;AES256
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diff --git a/roles/openvpn/files/keys/dh1024.pem b/roles/openvpn/files/keys/dh1024.pem
new file mode 100644
index 0000000..39e2099
--- /dev/null
+++ b/roles/openvpn/files/keys/dh1024.pem
@@ -0,0 +1,18 @@
+$ANSIBLE_VAULT;1.1;AES256
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diff --git a/roles/openvpn/files/openvpn_logrotate.conf b/roles/openvpn/files/openvpn_logrotate.conf
new file mode 100644
index 0000000..7dac758
--- /dev/null
+++ b/roles/openvpn/files/openvpn_logrotate.conf
@@ -0,0 +1,9 @@
+/var/log/openvpn.log {
+    rotate 4
+    weekly
+    missingok
+    notifempty
+    sharedscripts
+    copytruncate
+    delaycompress
+}
diff --git a/roles/openvpn/handlers/main.yml b/roles/openvpn/handlers/main.yml
new file mode 100644
index 0000000..befbcf5
--- /dev/null
+++ b/roles/openvpn/handlers/main.yml
@@ -0,0 +1,12 @@
+---
+- name: daemon-reload
+  command: systemctl daemon-reload
+
+- name: openvpn
+  service: name="{{openvpn_service}}" state=restarted
+
+- name: firewalld
+  shell: firewall-cmd --reload
+
+
+  
\ No newline at end of file
diff --git a/roles/openvpn/tasks/config.yml b/roles/openvpn/tasks/config.yml
new file mode 100644
index 0000000..67fdfa1
--- /dev/null
+++ b/roles/openvpn/tasks/config.yml
@@ -0,0 +1,28 @@
+- name: create openvpn configuration directory
+  file: path="{{openvpn_dir}}" state=directory
+
+- name: create openvpn key directory
+  file: path="{{openvpn_keydir}}" state=directory
+
+- name: create openvpn client config directory
+  file: path="{{openvpn_ccdir}}" state=directory
+  when: openvpn_servers in group_names
+
+- name: copy templates
+  template: src="{{item}}" dest="{{openvpn_ccdir}}/{{ item | basename | regex_replace('\.j2','') }}" owner=root group=root mode="0644"
+  with_fileglob: 
+    - ../templates/{{ openvpn_config }}/ccd/*
+  when: openvpn_servers in group_names
+
+- name: generate cluster templates
+  template: src="{{ openvpn_config }}/ccd.j2" dest="{{openvpn_ccdir}}/{{ hostvars[item]['ansible_hostname'] }}" owner=root group=root mode="0644"
+  vars:
+    id: "{{ hostvars[item]['ands_host_id'] }}"
+  with_inventory_hostnames:
+    - nodes:!{{openvpn_servers}}
+  when: openvpn_servers in group_names
+
+- name: create openvpn config file
+  template: src="{{ openvpn_config }}/{{ (openvpn_servers in group_names) | ternary('openvpn_server.j2', 'openvpn_client.j2') }}" dest="{{ openvpn_config_file }}" owner=root group=root
+  notify:
+    - openvpn
diff --git a/roles/openvpn/tasks/keys.yml b/roles/openvpn/tasks/keys.yml
new file mode 100644
index 0000000..dd9f4ec
--- /dev/null
+++ b/roles/openvpn/tasks/keys.yml
@@ -0,0 +1,13 @@
+- name: Copy CA private key
+  copy: src="ca/ca.key" dest="{{openvpn_keydir}}/" owner="root" group="root" mode="0400"
+
+- name: OpenSSL generate request
+  command: openssl req -subj '/CN={{ ansible_hostname }}' -new -keyout "node.key" -out "node.csr" -batch -nodes chdir="{{openvpn_keydir}}" creates="{{openvpn_keydir}}/node.csr"
+
+- name: Generate CA serial file
+  copy: content="01" dest="{{openvpn_keydir}}/ca.srl"
+
+- name: OpenSSL sign the request
+  command: openssl x509 -req -days 3650 -in "node.csr" -CA "ca.crt" -CAkey "ca.key" -out "node.crt" chdir="{{openvpn_keydir}}" creates="{{openvpn_keydir}}/node.crt"
+  notify:
+    - openvpn
diff --git a/roles/openvpn/tasks/main.yml b/roles/openvpn/tasks/main.yml
new file mode 100644
index 0000000..df49976
--- /dev/null
+++ b/roles/openvpn/tasks/main.yml
@@ -0,0 +1,62 @@
+---
+- name: Ensure OpenVPN and OpenSSL are installed
+  yum: name={{item}} state=present
+  with_items:
+    - openvpn
+    - openssl
+
+- name: copy openvpn logrotate config file
+  copy: src="openvpn_logrotate.conf" dest="/etc/logrotate.d/openvpn.conf" owner="root" group="root" mode="0400"
+
+- name: Copy CA certificate and the keys
+  copy: src="{{ item }}" dest="{{openvpn_keydir}}/" owner="root" group="root" mode="0400"
+  with_fileglob: 
+    - ca/ca.crt
+    - keys/*
+
+- name: Check if OpenSSL certificate is already generated
+  stat: path="{{ openvpn_keydir }}/node.crt" 
+  register: result
+
+- name: setup openvpn keys
+  include: keys.yml
+  when: result.stat.exists == False 
+
+- name: Ensure CA key is removed
+  file: path="{{openvpn_keydir}}/ca.key" state=absent
+
+- name: setup openvpn configuration 
+  include: config.yml
+
+- name: Ensure OpenVPN service is enabled
+  service: name="{{openvpn_service}}" enabled=yes
+
+- name: Check if we already reconfigured SystemD Unit
+  stat: path={{ item }}
+  register: result
+  vars:
+     item: "/etc/systemd/system/{{openvpn_service}}"
+
+- name: Copy SystemD Unit
+  copy: src="/usr/lib/systemd/system/openvpn@.service" dest="{{ item }}" remote_src=true
+  vars:
+    item: "/etc/systemd/system/{{openvpn_service}}"
+  when: result.stat.exists == False 
+
+- name: Re-configure systemd to start OpenVPN after origin-node
+  lineinfile: dest="/etc/systemd/system/{{openvpn_service}}" regexp="^After=" line="After=network.target origin-node.service" state=present
+  notify: daemon-reload
+
+- name: Ensure OpenVPN service is running
+  service: name="{{openvpn_service}}" state=started
+
+- name: Ensure firewalld is running
+  service: name=firewalld state=started enabled=yes
+  when: openvpn_servers in group_names
+
+- name: Configure firewalld
+  firewalld: port="{{openvpn_port}}/tcp"  state="enabled" permanent="true" immediate="true"
+  notify:
+    - firewalld
+  when: openvpn_servers in group_names
+
diff --git a/roles/openvpn/templates/katrin/ccd.j2 b/roles/openvpn/templates/katrin/ccd.j2
new file mode 100644
index 0000000..d278648
--- /dev/null
+++ b/roles/openvpn/templates/katrin/ccd.j2
@@ -0,0 +1,2 @@
+ifconfig-push {{ openvpn_net | ipaddr(id | int) | ipaddr('address') }} {{ openvpn_net | ipaddr('netmask') }}
+push "route 192.168.110.0 255.255.255.0 {{ openvpn_net | ipaddr(181) | ipaddr('address') }}"
diff --git a/roles/openvpn/templates/katrin/ccd/ikkatrinadei.ka.fzk.de.j2 b/roles/openvpn/templates/katrin/ccd/ikkatrinadei.ka.fzk.de.j2
new file mode 100644
index 0000000..e1a786d
--- /dev/null
+++ b/roles/openvpn/templates/katrin/ccd/ikkatrinadei.ka.fzk.de.j2
@@ -0,0 +1,3 @@
+#ifconfig-push clientIP serverIP
+ifconfig-push {{ openvpn_net | ipaddr(181) | ipaddr('address') }} {{ openvpn_net | ipaddr('netmask') }}
+iroute 192.168.110.0 255.255.255.0
diff --git a/roles/openvpn/templates/katrin/ccd/ipechilinga4.ka.fzk.de.j2 b/roles/openvpn/templates/katrin/ccd/ipechilinga4.ka.fzk.de.j2
new file mode 100644
index 0000000..3673a0b
--- /dev/null
+++ b/roles/openvpn/templates/katrin/ccd/ipechilinga4.ka.fzk.de.j2
@@ -0,0 +1 @@
+ifconfig-push {{ openvpn_net | ipaddr(90) | ipaddr('address') }} {{ openvpn_net | ipaddr('netmask') }}
diff --git a/roles/openvpn/templates/katrin/openvpn_client.j2 b/roles/openvpn/templates/katrin/openvpn_client.j2
new file mode 100644
index 0000000..a09322e
--- /dev/null
+++ b/roles/openvpn/templates/katrin/openvpn_client.j2
@@ -0,0 +1,24 @@
+client
+remote {{openvpn_lb}} {{openvpn_port}}
+proto tcp
+dev tun
+
+topology subnet
+
+ca {{openvpn_keydir}}/ca.crt
+cert {{openvpn_keydir}}/node.crt
+key {{openvpn_keydir}}/node.key
+dh {{openvpn_keydir}}/dh1024.pem
+
+resolv-retry infinite
+keepalive 5 15
+comp-lzo
+#user nobody
+#group nobody
+persist-key
+persist-tun
+
+log /var/log/openvpn_{{openvpn_config}}.log
+status /var/log/openvpn_{{openvpn_config}}_status.log
+verb 3
+
diff --git a/roles/openvpn/templates/katrin/openvpn_server.j2 b/roles/openvpn/templates/katrin/openvpn_server.j2
new file mode 100644
index 0000000..22c200d
--- /dev/null
+++ b/roles/openvpn/templates/katrin/openvpn_server.j2
@@ -0,0 +1,26 @@
+port {{openvpn_port}}
+dev tun
+
+topology subnet
+client-to-client
+server {{ openvpn_net | ipaddr('network') }} {{ openvpn_net | ipaddr('netmask') }}
+proto tcp
+
+ca {{openvpn_keydir}}/ca.crt
+cert {{openvpn_keydir}}/node.crt
+key {{openvpn_keydir}}/node.key
+dh {{openvpn_keydir}}/dh1024.pem
+
+keepalive 10 120
+comp-lzo
+#user nobody
+#group nobody
+persist-key
+persist-tun
+client-config-dir {{openvpn_ccdir}}
+log /var/log/openvpn_{{openvpn_config}}.log
+status /var/log/openvpn_{{openvpn_config}}_status.log
+verb 3
+
+route 192.168.110.0 255.255.255.0 {{ openvpn_net | ipaddr(181) | ipaddr('address') }}
+