mirror of
https://github.com/willshersystems/ansible-sshd
synced 2024-11-22 19:10:18 +01:00
230 lines
6 KiB
Markdown
230 lines
6 KiB
Markdown
OpenSSH Server
|
|
==============
|
|
|
|
[](https://travis-ci.org/willshersystems/ansible-sshd) [](https://galaxy.ansible.com/willshersystems/sshd/)
|
|
|
|
This role configures the OpenSSH daemon. It:
|
|
|
|
* By default configures the SSH daemon with the normal OS defaults.
|
|
* Works across a variety of UN*X like distributions
|
|
* Can be configured by dict or simple variables
|
|
* Supports Match sets
|
|
* Supports all sshd_config options. Templates are programmatically generated.
|
|
(see [meta/make_option_list](meta/make_option_list))
|
|
* Tests the sshd_config before reloading sshd.
|
|
|
|
**WARNING** Misconfiguration of this role can lock you out of your server!
|
|
Please test your configuration and its interaction with your users configuration
|
|
before using in production!
|
|
|
|
**WARNING** Digital Ocean allows root with passwords via SSH on Debian and
|
|
Ubuntu. This is not the default assigned by this module - it will set
|
|
`PermitRootLogin without-password` which will allow access via SSH key but not
|
|
via simple password. If you need this functionality, be sure to set
|
|
`ssh_PermitRootLogin yes` for those hosts.
|
|
|
|
Requirements
|
|
------------
|
|
|
|
Tested on:
|
|
|
|
* Ubuntu precise, trusty
|
|
* Debian wheezy, jessie
|
|
* FreeBSD 10.1
|
|
* EL 6,7 derived distributions
|
|
* Fedora 22, 23
|
|
* OpenBSD 6.0
|
|
* AIX 7.1, 7.2
|
|
|
|
It will likely work on other flavours and more direct support via suitable
|
|
[vars/](vars/) files is welcome.
|
|
|
|
Role variables
|
|
---------------
|
|
|
|
Unconfigured, this role will provide a sshd_config that matches the OS default,
|
|
minus the comments and in a different order.
|
|
|
|
* `sshd_enable`
|
|
|
|
If set to False, the role will be completely disabled. Defaults to True.
|
|
|
|
* `sshd_skip_defaults`
|
|
|
|
If set to True, don't apply default values. This means that you must have a
|
|
complete set of configuration defaults via either the sshd dict, or sshd_Key
|
|
variables. Defaults to *False*.
|
|
|
|
* `sshd_manage_service`
|
|
|
|
If set to False, the service/daemon won't be **managed** at all, i.e. will not
|
|
try to enable on boot or start or reload the service. Defaults to *True*
|
|
unless: Running inside a docker container (it is assumed ansible is used during
|
|
build phase) or AIX (Ansible `service` module does not currently support `enabled`
|
|
for AIX)
|
|
|
|
* `sshd_allow_reload`
|
|
|
|
If set to False, a reload of sshd wont happen on change. This can help with
|
|
troubleshooting. You'll need to manually reload sshd if you want to apply the
|
|
changed configuration. Defaults to the same value as ``sshd_manage_service``.
|
|
(Except on AIX, where `sshd_manage_service` is default *False*, but
|
|
`sshd_allow_reload` is default *True*)
|
|
|
|
* `sshd_install_service`
|
|
|
|
If set to True, the role will install service files for the ssh service.
|
|
Defaults to False.
|
|
|
|
The templates for the service files to be used are pointed to by the variables
|
|
|
|
- `sshd_service_template_service` (__default__: _templates/sshd.service.j2_)
|
|
- `sshd_service_template_at_service` (__default__: _templates/sshd@.service.j2_)
|
|
- `sshd_service_template_socket` (__default__: _templates/sshd.socket.j2_)
|
|
|
|
Using these variables, you can use your own custom templates. With the above
|
|
default templates, the name of the installed ssh service will be provided by
|
|
the `sshd_service` variable.
|
|
|
|
* sshd
|
|
|
|
A dict containing configuration. e.g.
|
|
|
|
```yaml
|
|
sshd:
|
|
Compression: delayed
|
|
ListenAddress:
|
|
- 0.0.0.0
|
|
```
|
|
|
|
* `ssh_...`
|
|
|
|
Simple variables can be used rather than a dict. Simple values override dict
|
|
values. e.g.:
|
|
|
|
```yaml
|
|
sshd_Compression: off
|
|
```
|
|
|
|
In all cases, booleans correctly rendered as yes and no in sshd configuration.
|
|
Lists can be used for multiline configuration items. e.g.
|
|
|
|
```yaml
|
|
sshd_ListenAddress:
|
|
- 0.0.0.0
|
|
- '::'
|
|
```
|
|
|
|
Renders as:
|
|
|
|
```
|
|
ListenAddress 0.0.0.0
|
|
ListenAddress ::
|
|
```
|
|
|
|
* `sshd_match`
|
|
|
|
A list of dicts for a match section. See the example playbook.
|
|
|
|
* `sshd_match_1` through `sshd_match_9`
|
|
|
|
A list of dicts or just a dict for a Match section.
|
|
|
|
### Secondary role variables
|
|
|
|
These variables are used by the role internals and can be used to override the
|
|
defaults that correspond to each supported platform.
|
|
|
|
* `sshd_packages`
|
|
|
|
Use this variable to override the default list of packages to install.
|
|
|
|
* `sshd_config_owner`, `sshd_config_group`, `sshd_config_mode`
|
|
|
|
Use these variables to set the ownership and permissions for the openssh config
|
|
file that this role produces.
|
|
|
|
* `sshd_config_file`
|
|
|
|
The path where the openssh configuration produced by this role should be saved.
|
|
|
|
* `sshd_binary`
|
|
|
|
The path to the openssh executable
|
|
|
|
* `sshd_service`
|
|
|
|
The name of the openssh service. By default, this variable contains the name of
|
|
the ssh service that the target platform uses. But it can also be used to set
|
|
the name of the custom ssh service when the `sshd_install_service` variable is
|
|
used.
|
|
|
|
|
|
Dependencies
|
|
------------
|
|
|
|
None
|
|
|
|
Example Playbook
|
|
----------------
|
|
|
|
**DANGER!** This example is to show the range of configuration this role
|
|
provides. Running it will likely break your SSH access to the server!
|
|
|
|
```yaml
|
|
---
|
|
- hosts: all
|
|
vars:
|
|
sshd_skip_defaults: true
|
|
sshd:
|
|
Compression: true
|
|
ListenAddress:
|
|
- "0.0.0.0"
|
|
- "::"
|
|
GSSAPIAuthentication: no
|
|
Match:
|
|
- Condition: "Group user"
|
|
GSSAPIAuthentication: yes
|
|
sshd_UsePrivilegeSeparation: no
|
|
sshd_match:
|
|
- Condition: "Group xusers"
|
|
X11Forwarding: yes
|
|
roles:
|
|
- role: willshersystems.sshd
|
|
```
|
|
|
|
Results in:
|
|
|
|
```
|
|
# Ansible managed: ...
|
|
Compression yes
|
|
GSSAPIAuthentication no
|
|
UsePrivilegeSeparation no
|
|
Match Group user
|
|
GSSAPIAuthentication yes
|
|
Match Group xusers
|
|
X11Forwarding yes
|
|
```
|
|
|
|
Template Generation
|
|
-------------------
|
|
|
|
The [sshd_config.j2](templates/sshd_config.j2) template is programatically
|
|
generated by the scripts in meta. New options should be added to the
|
|
options_body or options_match.
|
|
|
|
To regenerate the template, from within the meta/ directory run:
|
|
`./make_option_list >../templates/sshd_config.j2`
|
|
|
|
License
|
|
-------
|
|
|
|
LGPLv3
|
|
|
|
|
|
Author
|
|
------
|
|
|
|
Matt Willsher <matt@willsher.systems>
|
|
|
|
© 2014,2015 Willsher Systems Ltd.
|