Feat(roles): Add role to generate iptables for eapi (eapi_jumphost)

README.md

@@ -4,7 +4,8 @@ List of ansible roles & modules to integrate [__Arista AVD__](https://www.avd.sh
 
 ## List of available roles
 
-- [__EOS Designs to Containerlab__](ansible_collections/titom73/avd_tools/roles/eos_designs_to_containerlab): Generate [containerlab](https://containerlab.srlinux.dev/) topology from Arista AVD eos_designs.
+- [__EOS Designs to Containerlab__](ansible_collections/titom73/avd_tools/roles/avd_to_clab): Generate [containerlab](https://containerlab.srlinux.dev/) topology from Arista AVD eos_designs.
+- [__iptables script to expose eAPI via a Jumphost__](ansible_collections/titom73/avd_tools/roles/eapi_jumphost): Role to generate an iptables script that expose Arista eAPI ports by using D-NAT.
 
 ## License
 

ansible_collections/titom73/avd_tools/roles/eapi_jumphost/.travis.yml

@@ -0,0 +1,29 @@
+---
+language: python
+python: "2.7"
+
+# Use the new container infrastructure
+sudo: false
+
+# Install ansible
+addons:
+  apt:
+    packages:
+    - python-pip
+
+install:
+  # Install ansible
+  - pip install ansible
+
+  # Check ansible version
+  - ansible --version
+
+  # Create ansible.cfg with correct roles_path
+  - printf '[defaults]\nroles_path=../' >ansible.cfg
+
+script:
+  # Basic role syntax check
+  - ansible-playbook tests/test.yml -i tests/inventory --syntax-check
+
+notifications:
+  webhooks: https://galaxy.ansible.com/api/v1/notifications/

ansible_collections/titom73/avd_tools/roles/eapi_jumphost/README.md

@@ -0,0 +1,38 @@
+Role Name
+=========
+
+A brief description of the role goes here.
+
+Requirements
+------------
+
+Any pre-requisites that may not be covered by Ansible itself or the role should be mentioned here. For instance, if the role uses the EC2 module, it may be a good idea to mention in this section that the boto package is required.
+
+Role Variables
+--------------
+
+A description of the settable variables for this role should go here, including any variables that are in defaults/main.yml, vars/main.yml, and any variables that can/should be set via parameters to the role. Any variables that are read from other roles and/or the global scope (ie. hostvars, group vars, etc.) should be mentioned here as well.
+
+Dependencies
+------------
+
+A list of other roles hosted on Galaxy should go here, plus any details in regards to parameters that may need to be set for other roles, or variables that are used from other roles.
+
+Example Playbook
+----------------
+
+Including an example of how to use your role (for instance, with variables passed in as parameters) is always nice for users too:
+
+    - hosts: servers
+      roles:
+         - { role: username.rolename, x: 42 }
+
+License
+-------
+
+BSD
+
+Author Information
+------------------
+
+An optional section for the role authors to include contact information, or a website (HTML is not allowed).

ansible_collections/titom73/avd_tools/roles/eapi_jumphost/defaults/main.yml

@@ -0,0 +1,13 @@
+---
+# defaults file for eapi_jumphost
+
+eos_group: eos_devices
+
+# Ethernet Interface name to use
+incoming_interface: "ens3"
+eos_oob_interface: "ens4"
+
+# EAPI port to use as EOS destination
+eapi_port: '443'
+
+iptables_script_name: "{{ inventory_dir }}/eapi.iptables.sh"

ansible_collections/titom73/avd_tools/roles/eapi_jumphost/handlers/main.yml

@@ -0,0 +1,2 @@
+---
+# handlers file for eapi_jumphost

ansible_collections/titom73/avd_tools/roles/eapi_jumphost/meta/main.yml

@@ -0,0 +1,52 @@
+galaxy_info:
+  author: your name
+  description: your role description
+  company: your company (optional)
+
+  # If the issue tracker for your role is not on github, uncomment the
+  # next line and provide a value
+  # issue_tracker_url: http://example.com/issue/tracker
+
+  # Choose a valid license ID from https://spdx.org - some suggested licenses:
+  # - BSD-3-Clause (default)
+  # - MIT
+  # - GPL-2.0-or-later
+  # - GPL-3.0-only
+  # - Apache-2.0
+  # - CC-BY-4.0
+  license: license (GPL-2.0-or-later, MIT, etc)
+
+  min_ansible_version: 2.1
+
+  # If this a Container Enabled role, provide the minimum Ansible Container version.
+  # min_ansible_container_version:
+
+  #
+  # Provide a list of supported platforms, and for each platform a list of versions.
+  # If you don't wish to enumerate all versions for a particular platform, use 'all'.
+  # To view available platforms and versions (or releases), visit:
+  # https://galaxy.ansible.com/api/v1/platforms/
+  #
+  # platforms:
+  # - name: Fedora
+  #   versions:
+  #   - all
+  #   - 25
+  # - name: SomePlatform
+  #   versions:
+  #   - all
+  #   - 1.0
+  #   - 7
+  #   - 99.99
+
+  galaxy_tags: []
+    # List tags for your role here, one per line. A tag is a keyword that describes
+    # and categorizes the role. Users find roles by searching for tags. Be sure to
+    # remove the '[]' above, if you add tags to this list.
+    #
+    # NOTE: A tag is limited to a single word comprised of alphanumeric characters.
+    #       Maximum 20 tags per role.
+
+dependencies: []
+  # List your role dependencies here, one per line. Be sure to remove the '[]' above,
+  # if you add dependencies to this list.

ansible_collections/titom73/avd_tools/roles/eapi_jumphost/tasks/main.yml

@@ -0,0 +1,9 @@
+---
+# tasks file for eapi_jumphost
+# tasks file for avd_to_containerlab
+- name: Generate iptables configuration scrip
+  template:
+    src: expose_eapi.sh.j2
+    dest: '{{ iptables_script_name }}'
+  delegate_to: localhost
+  run_once: true

ansible_collections/titom73/avd_tools/roles/eapi_jumphost/templates/expose_eapi.sh.j2

@@ -0,0 +1,37 @@
+#!/bin/bash
+
+echo "Jumphost Remote access configuration"
+
+_EAPI_PORT='{{ eapi_port }}'
+_SRC_IF='{{ incoming_interface }}'
+_DST_IF='{{ eos_oob_interface }}'
+
+echo '* Activate kernel routing'
+sysctl -w net.ipv4.ip_forward=1
+
+echo '* Flush Current IPTables settings'
+iptables --flush
+iptables --delete-chain
+iptables --table nat --flush
+iptables --table nat --delete-chain
+
+echo '* Activate default forwarding'
+
+iptables -P FORWARD ACCEPT
+iptables -P INPUT ACCEPT
+iptables -P OUTPUT ACCEPT
+
+echo '* Activate masquerading'
+
+iptables -t nat -A POSTROUTING -o {{ incoming_interface }} -j MASQUERADE
+iptables -t nat -A POSTROUTING -o {{ eos_oob_interface }} -j MASQUERADE
+
+echo '* Activate eAPI forwarding with base port 800x'
+
+{% for host in groups[eos_group] %}
+iptables -t nat -A PREROUTING -p tcp -i {{ incoming_interface }} --dport  {{ hostvars[host]['ansible_port'] }} -j DNAT --to-destination {{ hostvars[host]['ansible_host'] }}:{{ eapi_port }}
+{% endfor %}
+
+iptables -A FORWARD -p tcp -d 10.73.254.0/24 --dport ${_EAPI_PORT} -m state --state NEW,ESTABLISHED,RELATED -j ACCEPT
+
+echo "-> Configuration done"

ansible_collections/titom73/avd_tools/roles/eapi_jumphost/tests/inventory

@@ -0,0 +1,2 @@
+localhost
+

ansible_collections/titom73/avd_tools/roles/eapi_jumphost/tests/test.yml

@@ -0,0 +1,5 @@
+---
+- hosts: localhost
+  remote_user: root
+  roles:
+    - eapi_jumphost

ansible_collections/titom73/avd_tools/roles/eapi_jumphost/vars/main.yml

@@ -0,0 +1,2 @@
+---
+# vars file for eapi_jumphost