There was some knowledge floating around that 860 bytes was the
optimal size, I think it was from an Akamai engineer or something,
but the HTML 5 Boilerplate server configs use 256 bytes, and I
actually have HTML content that is less than 860 bytes, so I guess
I could benefit from compressing it. gzip compression is costly
for the compression side, but very quick for the client, so this
is a good thing.
See: https://github.com/h5bp/server-configs-nginx/blob/master/nginx.conf
The variable name is misleading as this really does is install the
certbot client and its dependencies, and we generally want this to
always happen. If a host doesn't want it, they can override it in
their host vars.
Perhaps I should rename this variable to "bootstrap_letsencrypt" or
something so it is more accurate.
The `ConditionFileIsExecutable` goes in the [Unit] section! This
fixes the error:
systemd[1]: [/etc/systemd/system/renew-letsencrypt.service:6] Unknown lvalue 'ConditionFileIsExecutable' in section 'Service'
Only vhosts running WordPress, etc need PHP. Make sure to set the
appopriate variables for each vhost in the host's vars, ie:
nginx_vhosts:
- domain_name: example.com
has_wordpress: True
- domain_name: example.net
needs_php: True
You can set either of them, but not both—needing WordPress implies
needing PHP.
Used to indicate if a vhost needs PHP configuration or not, like
for a static site. Set in the hosts's nginx_vhosts block. Defaults
to "False" if unset.
This reverts commit 201165cff6.
Turns out this actually breaks initial deployments, because the
cache gets updated in the first task, then you add sources for
nginx and mariadb, but it doesn't update the indexes because the
cache is < 3600 seconds old, so you end up getting the distro's
versions of nginx and mariadb.
When you give Ansible the key id it will check if the key exists
before trying to download and add it. I got the long fingerprint
from `sudo apt-key finger`.
When I originally deployed Ubuntu 16.04 there were no public xenial
MariaDB builds yet, so I used wily (15.10). Now there are official
xenial builds so we can use them instead.
I have added cache_valid_time=3600 for the first task in each
tag that could be possibly running apt-related commands. For ex,
the "nginx" tag is also in the "packages" tag, but sometimes you
run the nginx tag by itself (perhaps repeatadely), so you'd want
to limit the update unless the cache was 1 hour old
I never modify file in the git repo, but the WordPress updater does
updates from the web (for example TwentySixteen theme), and this
always causes the task to fail when I switch WordPress versions.
This reverts commit a38d822fad.
The docs definitely recommend twice a day. From a note on certbot's
installation page:
> if you're setting up a cron or systemd job, we recommend running
> it twice per day (it won't do anything until your certificates
> are due for renewal or revoked, but running it regularly would
> give your site a chance of staying online in case a Let's
> Encrypt-initiated revocation happened for some reason). Please
> select a random minute within the hour for your renewal tasks.
See: https://certbot.eff.org/#ubuntuxenial-nginx
I had removed them from Debian 8 and Ubuntu 14.04 configs last year
when the NSA's Suite B crypto guidelines dropped 128-bit algorithms
but those changes didn't make it to my new Ubuntu 16.04 config.
It is probably overkill and paranoid, but this server is mine, so I
can make those decisions (and I only connect from modern clients).
For idempotence we need to run all apt-related tasks, like editing
source files, adding keys, installing packages, etc, when running
the 'packages' tag.
Take an opinionated stance on HTTPS and assume that hosts are using
HTTPS for all vhosts. This can either be via custom TLS cert/key
pairs defined in the host's variables (could even be self-signed
certificates on dev boxes) or via Let's Encrypt.
Hosts can specify use_letsencrypt: 'yes' in their host_vars. For
now this assumes that the certificates already exist (ie, you have
to manually run Let's Encrypt first to register/create the certs).
When you use the apt_repository module it adds a sources.list with
an annoying filename, and also it's just easier to use a template
when we have different distros/versions to support.
The creation of the fastcgi cache dir is part of the nginx role and
should be labled as such. In situations where you only run nginx
tasks with `-t nginx` nginx will fail to start due to the missing
cache dir.
Google's preload check application pointed out that there was an
extra semi colon in the HTTP header:
$ hstspreload checkdomain alaninkenya.org
Warning:
1. Syntax warning: Header includes an empty directive or extra semicolon.
The tool can be downloaded here: https://github.com/chromium/hstspreload
Signed-off-by: Alan Orth <alan.orth@gmail.com>
Google's PageSpeed Insights tool pointed out that the Genericons
in WordPress' Jetpack module could be compressed.
Signed-off-by: Alan Orth <alan.orth@gmail.com>
Everything is HTTPS now, whether self-signed or otherwise, so it
doesn't make sense to have a config switch for this.
Signed-off-by: Alan Orth <alan.orth@gmail.com>
It's just deduplication, since it's already obvious that the dict
is for nginx-related vars:
- nginx_domain_name→domain_name
- nginx_domain_aliases→domain_aliases
- nginx_enable_https→enable_https
- nginx_enable_hsts→enable_hsts
Signed-off-by: Alan Orth <alan.orth@gmail.com>
It would be bettwe to set these defaults in the role's defaults, but
we can't because they exist in dicts for each of the host's sites.
Signed-off-by: Alan Orth <alan.orth@gmail.com>
The `enable_https` option in host_vars becomes `nginx_enable_https`
to be more consistent with other nginx options used in host_vars.
Signed-off-by: Alan Orth <alan.orth@gmail.com>
I added another WordPress blog so I need more memory for caching
now. Eventually I wonder if I should deduplicate these somehow...
Signed-off-by: Alan Orth <alan.orth@gmail.com>
Set `use_snakeoil_cert: 'yes'` in host_vars. This is good for dev
hosts where we don't have real domains or real certs. But everything
should have TLS.
Signed-off-by: Alan Orth <alan.orth@gmail.com>
Automatically uses the best mirror for your location, see:
http://httpredir.debian.org/demo.html
Should be much better than any hardcoded default for most hosts.
Signed-off-by: Alan Orth <alan.orth@gmail.com>
For now I generated the certs manually, but in the future the play-
book should run the letsencrypt-auto client for us!
Signed-off-by: Alan Orth <alan.orth@gmail.com>
We need to actually check if HSTS was requested before setting the
header in the block handing PHP requests. We check in the main vhost
block, but nginx headers are only inherited if you don't set ANY
headers in child blocks (ie, headers set in parent blocks are cleared
if you set any new ones in the child).
Signed-off-by: Alan Orth <alan.orth@gmail.com>
This is really a per-site setting, so it doesn't make sense to have
a role default. Anyways, HSTS is kinda tricky and potentially dang-
erous, so unless a vhost explicitly sets it to "yes" we shouldn't
enable it.
Note: also switch from using a boolean to using a string; it is st-
ill declarative, but at least now I don't have to guess whether it
is being treated as a bool or not.
Signed-off-by: Alan Orth <alan.orth@gmail.com>
We actually need to use /var/log/munin for munin-node on Debian
too, as that's what is created by the package manager during
installation.
Signed-off-by: Alan Orth <alan.orth@gmail.com>
Note: I've only tested this on a Debian container, and you can't
set these sysctls on containers (the host controls them). To make
matters worse, there is no fact to make ansible skip this on hosts
that are running in containers. For now I will just skip it on
hosts that are "virtualization" servers... even though we actually
do have KVM running on Debian on real hardware. *sigh*
Signed-off-by: Alan Orth <alan.orth@gmail.com>
Needed in Ubuntu 15.04 where iptables-persistent is going away. I
have added translations of the current IPv4 and IPv6 iptables rules.
Signed-off-by: Alan Orth <alan.orth@gmail.com>
- Don't run the static files as templates
- Use a separate playbook for related tasks
- Use a template for security.sources.list
Signed-off-by: Alan Orth <alan.orth@gmail.com>
For security and predictability clients should only get a reponse
if they request a hostname we are actually hosting.
If TLS is in use then this will use a self-signed snakeoil cert for
an HTTPS-enabled blank, default vhost.
Signed-off-by: Alan Orth <alan.orth@gmail.com>
New hosts often fail due to not having an apt_mirror, because there
isn't one defined for their group and their host_vars haven't over-
ridden it.
We want new hosts to deploy successfully, so let's just use a default
apt_mirror if there isn't one defined. Rather have a slow mirror than
a failed deployment. And in any case, Linode can download from KENET's
mirror at 10MB/sec. ;)
Signed-off-by: Alan Orth <alan.orth@gmail.com>
I realized there was no need to do a full clone when I was working
in a Vagrant environment in a coffee shop with slow Internet. ;)
Signed-off-by: Alan Orth <alan.orth@gmail.com>
Instead of using dynamic hack to use the package manager for the
current host. We only have Ubuntu here anyways.
Signed-off-by: Alan Orth <alan.orth@gmail.com>
A template is better than ansible's `apt_repository` module because
we can idempotently control the contents of the file based on vari-
ables.
Signed-off-by: Alan Orth <alan.orth@gmail.com>
