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2025-01-24 17:50:19 +00:00

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---
# Copyright Red Hat, Inc. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
#
# Author: David Moreau Simard <dms@redhat.com>
# ansible_port can change throughout this role, keep a copy around
- name: Set configured port fact
set_fact:
configured_port: "{{ ansible_port }}"
# From localhost, check if we're able to reach {{ inventory_hostname }} on
# port 22
- name: Check if we're using the default SSH port
wait_for:
port: "22"
state: "started"
host: "{{ inventory_hostname }}"
connect_timeout: "5"
timeout: "5"
delegate_to: "localhost"
ignore_errors: true
register: default_ssh
# If reachable, continue the following tasks with this port
- name: Set inventory ansible_port to default
set_fact:
ansible_port: "22"
when: default_ssh is defined and
default_ssh.state is defined and
default_ssh.state == "started"
register: ssh_port_set
# If unreachable on port 22, check if we're able to reach
# {{ inventory_hostname }} on {{ ansible_port }} provided by the inventory
# from localhost
- name: Check if we're using the inventory-provided SSH port
wait_for:
port: "{{ ansible_port }}"
state: "started"
host: "{{ inventory_hostname }}"
connect_timeout: "5"
timeout: "10"
delegate_to: "localhost"
ignore_errors: true
register: configured_ssh
when: default_ssh is defined and
default_ssh.state is undefined
# If {{ ansible_port }} is reachable, we don't need to do anything special
- name: SSH port is configured properly
debug:
msg: "SSH port is configured properly"
when: configured_ssh is defined and
configured_ssh.state is defined and
configured_ssh.state == "started"
register: ssh_port_set
# If the SSH port is neither the default or the configured, give up.
- name: Fail if SSH port was not auto-detected (unknown)
fail:
msg: "The SSH port is neither 22 or {{ ansible_port }}."
when: ssh_port_set is undefined
# Sanity check, make sure Ansible is able to connect to the host
- name: Confirm host connection works
ping:
- name: Setup alternate SSH port
become: true
lineinfile:
dest: "/etc/ssh/sshd_config"
regexp: "^#?Port"
line: "Port {{ configured_port }}"
notify: "Restart sshd"
- name: Creates sshd socket override directory
become: true
file:
path: /etc/systemd/system/sshd.socket.d
state: directory
- name: Setup alternate SSH port (systemd)
become: true
copy:
dest: "/etc/systemd/system/sshd.socket.d/override.conf"
content: |
[Socket]
ListenStream=
ListenStream={{ configured_port }}
notify: "Restart sshd"
- name: Setup selinux for alternate SSH port
ignore_errors: true
seport:
ports: "{{ configured_port }}"
proto: "tcp"
setype: "ssh_port_t"
state: "present"
# We notified "Restart sshd" if we modified the sshd config.
# By calling flush_handlers, we make sure the handler is run *right now*
- name: Ensure SSH is reloaded if need be
meta: flush_handlers
# We're done, make sure ansible_port is set properly so that any tasks
# after this use the right ansible_port.
- name: Ensure we use the configured SSH port for the remainder of the role
set_fact:
ansible_port: "{{ configured_port }}"
# Gather facts should be set to false when running this role since it will
# fail if the Ansible SSH port is not set correctly.
# We run setup to gather facts here once the SSH port is set up.
- name: Run deferred setup to gather facts
setup: