External authenticator for Certbot

Automation - the main goal of letsencrypt is to make certificate management hassle-free. It works like that in most situations but each user has to deal with its own network configuration (NAT, firewalls, DNS, proxy, ...). The more mechanisms we have for verifying domain control, the easier the letsencrypt use becomes.

The biggest hassle with letsencrypt is verification of domain control as it requires your server to talk to letsencrypt servers and respond to challenges provided (changing DNS records, or adding files to certain locations). This process is necessary is it prevents random people getting certificates for your own domain. This plugin helps with domain verification process. It offers three modes:

JSON mode - its output is in JSON format that can be processed by the certbot caller (e.g., Ansible).
Handler mode - when it provides data for external authentication programs - e.g., Dehydrated that supports DNS updates for a number of registrars - here is the list.
Manual mode - a fallback option when no automation is available and users have to do some changes (e.g., DNS updates) by hand.

We also support challenges for all three verification protocols:

DNS
HTTP

This plugin does not communicate with letsencrypt but it provides data for letsencrypt clients in the correct format so the domain control verification can be automated.

Installation - pip

pip install certbot
pip install certbot-ext-auth

Usage

Here is an example of a typical use:

certbot --text --agree-tos --email you@example.com \
        --expand --renew-by-default \
        --configurator certbot-external-auth:out \
        --certbot-external-auth:out-public-ip-logging-ok \
        -d example.com certonly

There are 3 main modes of operation:

JSON mode (default)
Text mode - fallback to the manual.py operation
Handler mode - auth performed by an external program. Supports Dehydrated and augmented mode.

If you want it to use as Authenticator and Installer, use --configurator certbot-external-auth:out certbot flag, for Authenticator only use -a certbot-external-auth:out

In authenticator mode one can use certbot actions certonly or renew. If installer mode is enabled too use run action - typical for Dehydrated hooks.

JSON Mode

JSON mode produces one-line JSON objects (\n separated) with a challenge to process by the invoker on the STDOUT.

After the challenge is processed, the invoker is supposed to send a new line \n character to the STDIN to continue with the process.

Note JSON mode produces also another JSON objects besides challenges, e.g., cleanup and reports. The \n is expected only for challenges (perform/validate step).

If plugin is installed also as an Installer (or Configurator), it provides also commands related to the certificate installation.

Reporter was substituted to produce JSON logs so STDOUT is JSON only.

Arguments

--certbot-external-auth:out-public-ip-logging-ok
        Skips public IP query check, required for JSON mode

--certbot-external-auth:out-text-mode
        Defaults to manual.py text stdout, no JSON

--certbot-external-auth:out-handler
        If set, enables handler mode. Commands are 
        sent to the handler script for processing. 
        Arguments are sent in ENV.

--certbot-external-auth:out-dehydrated-dns
        If handler mode is enabled, compatibility 
        with dehydrated-dns hooks is enabled

Errors

Processing errors are indicated by non-zero return codes returned by this plugin.

Examples

The particular examples of verification methods and handler follows. At first the JSON mode examples are given, then handler examples follow.

Please note there is a --staging argument in the following commands, meaning you will get just testing LetsEncrypt certificate. Once this works for you, remove this argument so you get proper valid LetsEncrypt certificate.

DNS

Run the certbot with the following command:

certbot --staging \
        --text --agree-tos --email you@example.com \
        --expand --renew-by-default \
        --configurator certbot-external-auth:out \
        --certbot-external-auth:out-public-ip-logging-ok \
        -d "bristol3.pki.enigmabridge.com" \
        -d "bs3.pki.enigmabridge.com" \
        --preferred-challenges dns \
        certonly 2>/dev/null

Stderr contains string log / report, not in JSON format.

Stdout:

{"cmd": "perform_challenge", "type": "dns-01", "domain": "bristol3.pki.enigmabridge.com", "token": "_QLSFTRw6qbQaN7gTglBYZuU1L7KAP-bXB_41CAnAvU", "validation": "667drNmQL3vX6bu8YZlgy0wKNBlCny8yrjF1lSaUndc", "txt_domain": "_acme-challenge.bristol3.pki.enigmabridge.com", "key_auth": "_QLSFTRw6qbQaN7gTglBYZuU1L7KAP-bXB_41CAnAvU.tRQM98JsABZRm5-NiotcgD212RAUPPbyeDP30Ob_7-0"}

{"cmd": "perform_challenge", "type": "dns-01", "domain": "bs3.pki.enigmabridge.com", "token": "3gJ87yANDpmuuKVL2ktfQ0_qURQ3mN0IfqgbTU_AGS4", "validation": "ejEDZXYEeYHUxqBAiX4csh8GKkeVX7utK6BBOBshZ1Y", "txt_domain": "_acme-challenge.bs3.pki.enigmabridge.com", "key_auth": "3gJ87yANDpmuuKVL2ktfQ0_qURQ3mN0IfqgbTU_AGS4.tRQM98JsABZRm5-NiotcgD212RAUPPbyeDP30Ob_7-0"}

{"cmd": "cleanup", "type": "dns-01", "status": "pending", "domain": "bristol3.pki.enigmabridge.com", "token": "_QLSFTRw6qbQaN7gTglBYZuU1L7KAP-bXB_41CAnAvU", "validation": "667drNmQL3vX6bu8YZlgy0wKNBlCny8yrjF1lSaUndc", "key_auth": "_QLSFTRw6qbQaN7gTglBYZuU1L7KAP-bXB_41CAnAvU.tRQM98JsABZRm5-NiotcgD212RAUPPbyeDP30Ob_7-0", "validated": null, "error": null}
{"cmd": "cleanup", "type": "dns-01", "status": "pending", "domain": "bs3.pki.enigmabridge.com", "token": "3gJ87yANDpmuuKVL2ktfQ0_qURQ3mN0IfqgbTU_AGS4", "validation": "ejEDZXYEeYHUxqBAiX4csh8GKkeVX7utK6BBOBshZ1Y", "key_auth": "3gJ87yANDpmuuKVL2ktfQ0_qURQ3mN0IfqgbTU_AGS4.tRQM98JsABZRm5-NiotcgD212RAUPPbyeDP30Ob_7-0", "validated": null, "error": null}
{"cmd": "report", "messages": [{"priority": 1, "on_crash": true, "lines": ["Congratulations! Your certificate and chain have been saved at /etc/letsencrypt/live/bristol3.pki.enigmabridge.com/fullchain.pem. Your cert will expire on 2017-01-25. To obtain a new or tweaked version of this certificate in the future, simply run certbot again. To non-interactively renew *all* of your certificates, run \"certbot renew\""]}]}

After {"cmd": "validate"} message the client waits on \n on the standard input to continue with the validation.

DNS installer

Certbot is running with action run which causes also Installer plugin part to work. The installer is the same for all validation modes so it is demonstrated only once.

certbot --staging \
        --text --agree-tos --email you@example.com \
        --expand --renew-by-default \
        --configurator certbot-external-auth:out \
        --certbot-external-auth:out-public-ip-logging-ok \
        -d "bristol3.pki.enigmabridge.com" \
        -d "bs3.pki.enigmabridge.com" \
        --preferred-challenges dns \
        run 2>/dev/null

Stdout:

{"cmd": "perform_challenge", "type": "dns-01", "domain": "bristol3.pki.enigmabridge.com", "token": "_QLSFTRw6qbQaN7gTglBYZuU1L7KAP-bXB_41CAnAvU", "validation": "667drNmQL3vX6bu8YZlgy0wKNBlCny8yrjF1lSaUndc", "txt_domain": "_acme-challenge.bristol3.pki.enigmabridge.com", "key_auth": "_QLSFTRw6qbQaN7gTglBYZuU1L7KAP-bXB_41CAnAvU.tRQM98JsABZRm5-NiotcgD212RAUPPbyeDP30Ob_7-0"}

{"cmd": "perform_challenge", "type": "dns-01", "domain": "bs3.pki.enigmabridge.com", "token": "3gJ87yANDpmuuKVL2ktfQ0_qURQ3mN0IfqgbTU_AGS4", "validation": "ejEDZXYEeYHUxqBAiX4csh8GKkeVX7utK6BBOBshZ1Y", "txt_domain": "_acme-challenge.bs3.pki.enigmabridge.com", "key_auth": "3gJ87yANDpmuuKVL2ktfQ0_qURQ3mN0IfqgbTU_AGS4.tRQM98JsABZRm5-NiotcgD212RAUPPbyeDP30Ob_7-0"}

{"cmd": "cleanup", "type": "dns-01", "status": "pending", "domain": "bristol3.pki.enigmabridge.com", "token": "_QLSFTRw6qbQaN7gTglBYZuU1L7KAP-bXB_41CAnAvU", "validation": "667drNmQL3vX6bu8YZlgy0wKNBlCny8yrjF1lSaUndc", "key_auth": "_QLSFTRw6qbQaN7gTglBYZuU1L7KAP-bXB_41CAnAvU.tRQM98JsABZRm5-NiotcgD212RAUPPbyeDP30Ob_7-0", "validated": null, "error": null}
{"cmd": "cleanup", "type": "dns-01", "status": "pending", "domain": "bs3.pki.enigmabridge.com", "token": "3gJ87yANDpmuuKVL2ktfQ0_qURQ3mN0IfqgbTU_AGS4", "validation": "ejEDZXYEeYHUxqBAiX4csh8GKkeVX7utK6BBOBshZ1Y", "key_auth": "3gJ87yANDpmuuKVL2ktfQ0_qURQ3mN0IfqgbTU_AGS4.tRQM98JsABZRm5-NiotcgD212RAUPPbyeDP30Ob_7-0", "validated": null, "error": null}
{"cmd": "deploy_cert", "domain": "bristol3.pki.enigmabridge.com", "cert_path": "/etc/letsencrypt/live/bristol3.pki.enigmabridge.com/cert.pem", "key_path": "/etc/letsencrypt/live/bristol3.pki.enigmabridge.com/privkey.pem", "chain_path": "/etc/letsencrypt/live/bristol3.pki.enigmabridge.com/chain.pem", "fullchain_path": "/etc/letsencrypt/live/bristol3.pki.enigmabridge.com/fullchain.pem", "timestamp": 1477582237, "cert_timestamp": 1477582245.9930167}
{"cmd": "save", "title": null, "temporary": false}
{"cmd": "deploy_cert", "domain": "bs3.pki.enigmabridge.com", "cert_path": "/etc/letsencrypt/live/bristol3.pki.enigmabridge.com/cert.pem", "key_path": "/etc/letsencrypt/live/bristol3.pki.enigmabridge.com/privkey.pem", "chain_path": "/etc/letsencrypt/live/bristol3.pki.enigmabridge.com/chain.pem", "fullchain_path": "/etc/letsencrypt/live/bristol3.pki.enigmabridge.com/fullchain.pem", "timestamp": 1477582237, "cert_timestamp": 1477582245.9930167}
{"cmd": "save", "title": null, "temporary": false}
{"cmd": "save", "title": "Deployed ACME Certificate", "temporary": false}
{"cmd": "restart"}
{"cmd": "report", "messages": [{"priority": 1, "on_crash": true, "lines": ["Congratulations! Your certificate and chain have been saved at /etc/letsencrypt/live/bristol3.pki.enigmabridge.com/fullchain.pem. Your cert will expire on 2017-01-25. To obtain a new or tweaked version of this certificate in the future, simply run certbot again with the \"certonly\" option. To non-interactively renew *all* of your certificates, run \"certbot renew\""]}]}

HTTP

Run the certbot with the following command (just preferred-challenges changed):

certbot --staging \
        --text --agree-tos --email you@example.com \
        --expand --renew-by-default \
        --configurator certbot-external-auth:out \
        --certbot-external-auth:out-public-ip-logging-ok \
        -d "bristol3.pki.enigmabridge.com" \
        -d "bs3.pki.enigmabridge.com" \
        --preferred-challenges http \
        certonly 2>/dev/null

Stdout:

{"cmd": "perform_challenge", "type": "http-01", "domain": "bristol3.pki.enigmabridge.com", "token": "oRezdno4N00Cfp2bLqJe45Ad3mwJ0q3xqIr7HML7RcY", "validation": "oRezdno4N00Cfp2bLqJe45Ad3mwJ0q3xqIr7HML7RcY.tRQM98JsABZRm5-NiotcgD212RAUPPbyeDP30Ob_7-0", "uri": "http://bristol3.pki.enigmabridge.com/.well-known/acme-challenge/oRezdno4N00Cfp2bLqJe45Ad3mwJ0q3xqIr7HML7RcY", "command": "mkdir -p /tmp/certbot/public_html/.well-known/acme-challenge\ncd /tmp/certbot/public_html\nprintf \"%s\" oRezdno4N00Cfp2bLqJe45Ad3mwJ0q3xqIr7HML7RcY.tRQM98JsABZRm5-NiotcgD212RAUPPbyeDP30Ob_7-0 > .well-known/acme-challenge/oRezdno4N00Cfp2bLqJe45Ad3mwJ0q3xqIr7HML7RcY\n# run only once per server:\n$(command -v python2 || command -v python2.7 || command -v python2.6) -c \\\n\"import BaseHTTPServer, SimpleHTTPServer; \\\ns = BaseHTTPServer.HTTPServer(('', 80), SimpleHTTPServer.SimpleHTTPRequestHandler); \\\ns.serve_forever()\" ", "key_auth": "oRezdno4N00Cfp2bLqJe45Ad3mwJ0q3xqIr7HML7RcY.tRQM98JsABZRm5-NiotcgD212RAUPPbyeDP30Ob_7-0"}

{"cmd": "perform_challenge", "type": "http-01", "domain": "bs3.pki.enigmabridge.com", "token": "L1xK8bOfybszr3MSJpf0oNZkxCDLLY1qzCKUwSwDYj0", "validation": "L1xK8bOfybszr3MSJpf0oNZkxCDLLY1qzCKUwSwDYj0.tRQM98JsABZRm5-NiotcgD212RAUPPbyeDP30Ob_7-0", "uri": "http://bs3.pki.enigmabridge.com/.well-known/acme-challenge/L1xK8bOfybszr3MSJpf0oNZkxCDLLY1qzCKUwSwDYj0", "command": "mkdir -p /tmp/certbot/public_html/.well-known/acme-challenge\ncd /tmp/certbot/public_html\nprintf \"%s\" L1xK8bOfybszr3MSJpf0oNZkxCDLLY1qzCKUwSwDYj0.tRQM98JsABZRm5-NiotcgD212RAUPPbyeDP30Ob_7-0 > .well-known/acme-challenge/L1xK8bOfybszr3MSJpf0oNZkxCDLLY1qzCKUwSwDYj0\n# run only once per server:\n$(command -v python2 || command -v python2.7 || command -v python2.6) -c \\\n\"import BaseHTTPServer, SimpleHTTPServer; \\\ns = BaseHTTPServer.HTTPServer(('', 80), SimpleHTTPServer.SimpleHTTPRequestHandler); \\\ns.serve_forever()\" ", "key_auth": "L1xK8bOfybszr3MSJpf0oNZkxCDLLY1qzCKUwSwDYj0.tRQM98JsABZRm5-NiotcgD212RAUPPbyeDP30Ob_7-0"}

{"cmd": "cleanup", "type": "http-01", "status": "pending", "domain": "bristol3.pki.enigmabridge.com", "token": "oRezdno4N00Cfp2bLqJe45Ad3mwJ0q3xqIr7HML7RcY", "validation": "oRezdno4N00Cfp2bLqJe45Ad3mwJ0q3xqIr7HML7RcY.tRQM98JsABZRm5-NiotcgD212RAUPPbyeDP30Ob_7-0", "key_auth": "oRezdno4N00Cfp2bLqJe45Ad3mwJ0q3xqIr7HML7RcY.tRQM98JsABZRm5-NiotcgD212RAUPPbyeDP30Ob_7-0", "validated": null, "error": null}
{"cmd": "cleanup", "type": "http-01", "status": "pending", "domain": "bs3.pki.enigmabridge.com", "token": "L1xK8bOfybszr3MSJpf0oNZkxCDLLY1qzCKUwSwDYj0", "validation": "L1xK8bOfybszr3MSJpf0oNZkxCDLLY1qzCKUwSwDYj0.tRQM98JsABZRm5-NiotcgD212RAUPPbyeDP30Ob_7-0", "key_auth": "L1xK8bOfybszr3MSJpf0oNZkxCDLLY1qzCKUwSwDYj0.tRQM98JsABZRm5-NiotcgD212RAUPPbyeDP30Ob_7-0", "validated": null, "error": null}
{"cmd": "report", "messages": [{"priority": 1, "on_crash": true, "lines": ["Congratulations! Your certificate and chain have been saved at /etc/letsencrypt/live/bristol3.pki.enigmabridge.com/fullchain.pem. Your cert will expire on 2017-01-25. To obtain a new or tweaked version of this certificate in the future, simply run certbot again. To non-interactively renew *all* of your certificates, run \"certbot renew\""]}]}

Example - Dehydrated

The following section demonstrates usage of the plugin with Dehydrated DNS hooks.

Note the certbot is run with action run so deployment callbacks are called too.

In this repository there is dehydrated-example.sh which is a hook stub used in this example. When using your own handler please make sure the file is executable (has x flag, chmod +x handler-file).

certbot --staging \
        --text --agree-tos --email you@example.com \
        --expand --renew-by-default \
        --configurator certbot-external-auth:out \
        --certbot-external-auth:out-public-ip-logging-ok \
        -d "bristol3.pki.enigmabridge.com" \
        -d "bs3.pki.enigmabridge.com" \
        --preferred-challenges dns \
        --certbot-external-auth:out-handler ./dehydrated-example.sh \
        --certbot-external-auth:out-dehydrated-dns \
        run 2>/dev/null

Stdout:

{"cmd": "perform_challenge", "type": "dns-01", "domain": "bristol3.pki.enigmabridge.com", "token": "_QLSFTRw6qbQaN7gTglBYZuU1L7KAP-bXB_41CAnAvU", "validation": "667drNmQL3vX6bu8YZlgy0wKNBlCny8yrjF1lSaUndc", "txt_domain": "_acme-challenge.bristol3.pki.enigmabridge.com", "key_auth": "_QLSFTRw6qbQaN7gTglBYZuU1L7KAP-bXB_41CAnAvU.tRQM98JsABZRm5-NiotcgD212RAUPPbyeDP30Ob_7-0"}
{"cmd": "perform_challenge", "type": "dns-01", "domain": "bs3.pki.enigmabridge.com", "token": "3gJ87yANDpmuuKVL2ktfQ0_qURQ3mN0IfqgbTU_AGS4", "validation": "ejEDZXYEeYHUxqBAiX4csh8GKkeVX7utK6BBOBshZ1Y", "txt_domain": "_acme-challenge.bs3.pki.enigmabridge.com", "key_auth": "3gJ87yANDpmuuKVL2ktfQ0_qURQ3mN0IfqgbTU_AGS4.tRQM98JsABZRm5-NiotcgD212RAUPPbyeDP30Ob_7-0"}
{"cmd": "cleanup", "type": "dns-01", "status": "pending", "domain": "bristol3.pki.enigmabridge.com", "token": "_QLSFTRw6qbQaN7gTglBYZuU1L7KAP-bXB_41CAnAvU", "validation": "667drNmQL3vX6bu8YZlgy0wKNBlCny8yrjF1lSaUndc", "key_auth": "_QLSFTRw6qbQaN7gTglBYZuU1L7KAP-bXB_41CAnAvU.tRQM98JsABZRm5-NiotcgD212RAUPPbyeDP30Ob_7-0", "validated": null, "error": null}
{"cmd": "cleanup", "type": "dns-01", "status": "pending", "domain": "bs3.pki.enigmabridge.com", "token": "3gJ87yANDpmuuKVL2ktfQ0_qURQ3mN0IfqgbTU_AGS4", "validation": "ejEDZXYEeYHUxqBAiX4csh8GKkeVX7utK6BBOBshZ1Y", "key_auth": "3gJ87yANDpmuuKVL2ktfQ0_qURQ3mN0IfqgbTU_AGS4.tRQM98JsABZRm5-NiotcgD212RAUPPbyeDP30Ob_7-0", "validated": null, "error": null}
{"cmd": "deploy_cert", "domain": "bristol3.pki.enigmabridge.com", "cert_path": "/etc/letsencrypt/live/bristol3.pki.enigmabridge.com/cert.pem", "key_path": "/etc/letsencrypt/live/bristol3.pki.enigmabridge.com/privkey.pem", "chain_path": "/etc/letsencrypt/live/bristol3.pki.enigmabridge.com/chain.pem", "fullchain_path": "/etc/letsencrypt/live/bristol3.pki.enigmabridge.com/fullchain.pem", "timestamp": 1477582423, "cert_timestamp": 1477582428.9469378}
{"cmd": "save", "title": null, "temporary": false}
{"cmd": "deploy_cert", "domain": "bs3.pki.enigmabridge.com", "cert_path": "/etc/letsencrypt/live/bristol3.pki.enigmabridge.com/cert.pem", "key_path": "/etc/letsencrypt/live/bristol3.pki.enigmabridge.com/privkey.pem", "chain_path": "/etc/letsencrypt/live/bristol3.pki.enigmabridge.com/chain.pem", "fullchain_path": "/etc/letsencrypt/live/bristol3.pki.enigmabridge.com/fullchain.pem", "timestamp": 1477582423, "cert_timestamp": 1477582428.9469378}
{"cmd": "save", "title": null, "temporary": false}
{"cmd": "save", "title": "Deployed ACME Certificate", "temporary": false}
{"cmd": "restart"}
{"cmd": "report", "messages": [{"priority": 1, "on_crash": true, "lines": ["Congratulations! Your certificate and chain have been saved at /etc/letsencrypt/live/bristol3.pki.enigmabridge.com/fullchain.pem. Your cert will expire on 2017-01-25. To obtain a new or tweaked version of this certificate in the future, simply run certbot again with the \"certonly\" option. To non-interactively renew *all* of your certificates, run \"certbot renew\""]}]}

Stderr:

Saving debug log to /var/log/letsencrypt/letsencrypt.log
Starting new HTTPS connection (1): acme-staging.api.letsencrypt.org
Renewing an existing certificate
Performing the following challenges:
dns-01 challenge for bristol3.pki.enigmabridge.com
dns-01 challenge for bs3.pki.enigmabridge.com
Handler output (deploy_challenge):

-----BEGIN DEPLOY_CHALLENGE-----
add _acme-challenge.bristol3.pki.enigmabridge.com. 300 in TXT "667drNmQL3vX6bu8YZlgy0wKNBlCny8yrjF1lSaUndc"\n\n
-----BEGIN DEPLOY_CHALLENGE-----

Self-verify of challenge failed.
Handler output (deploy_challenge):

-----BEGIN DEPLOY_CHALLENGE-----
add _acme-challenge.bs3.pki.enigmabridge.com. 300 in TXT "ejEDZXYEeYHUxqBAiX4csh8GKkeVX7utK6BBOBshZ1Y"\n\n
-----BEGIN DEPLOY_CHALLENGE-----

Self-verify of challenge failed.
Waiting for verification...
Cleaning up challenges
Handler output (clean_challenge):

-----BEGIN CLEAN_CHALLENGE-----
delete _acme-challenge.. 300 in TXT "667drNmQL3vX6bu8YZlgy0wKNBlCny8yrjF1lSaUndc"

-----END CLEAN_CHALLENGE-----

Handler output (clean_challenge):

-----BEGIN CLEAN_CHALLENGE-----
delete _acme-challenge.. 300 in TXT "ejEDZXYEeYHUxqBAiX4csh8GKkeVX7utK6BBOBshZ1Y"

-----END CLEAN_CHALLENGE-----

Generating key (2048 bits): /etc/letsencrypt/keys/0246_key-certbot.pem
Creating CSR: /etc/letsencrypt/csr/0246_csr-certbot.pem
Handler output (deploy_cert):

-----BEGIN DEPLOY_CERT-----
domain: bristol3.pki.enigmabridge.com
key_file: /etc/letsencrypt/live/bristol3.pki.enigmabridge.com/privkey.pem
cert_file: /etc/letsencrypt/live/bristol3.pki.enigmabridge.com/cert.pem
fullchain_file: /etc/letsencrypt/live/bristol3.pki.enigmabridge.com/fullchain.pem
chain_file: /etc/letsencrypt/live/bristol3.pki.enigmabridge.com/chain.pem
timestamp: 1477582423
-----END DEPLOY_CERT-----

Handler output (deploy_cert):

-----BEGIN DEPLOY_CERT-----
domain: bs3.pki.enigmabridge.com
key_file: /etc/letsencrypt/live/bristol3.pki.enigmabridge.com/privkey.pem
cert_file: /etc/letsencrypt/live/bristol3.pki.enigmabridge.com/cert.pem
fullchain_file: /etc/letsencrypt/live/bristol3.pki.enigmabridge.com/fullchain.pem
chain_file: /etc/letsencrypt/live/bristol3.pki.enigmabridge.com/chain.pem
timestamp: 1477582423
-----END DEPLOY_CERT-----

-------------------------------------------------------------------------------
Your existing certificate has been successfully renewed, and the new certificate
has been installed.

The new certificate covers the following domains:
https://bristol3.pki.enigmabridge.com and https://bs3.pki.enigmabridge.com

You should test your configuration at:
https://www.ssllabs.com/ssltest/analyze.html?d=bristol3.pki.enigmabridge.com
https://www.ssllabs.com/ssltest/analyze.html?d=bs3.pki.enigmabridge.com
-------------------------------------------------------------------------------

Example - Handler

DNS

In this repository there is a default handler-example.sh which can be used as a handler. When using your own handler please make sure the file is executable (has x flag, chmod +x handler-file).

certbot --staging \
        --text --agree-tos --email you@example.com \
        --expand --renew-by-default \
        --configurator certbot-external-auth:out \
        --certbot-external-auth:out-public-ip-logging-ok \
        -d "bristol3.pki.enigmabridge.com" \
        -d "bs3.pki.enigmabridge.com" \
        --preferred-challenges dns \
        --certbot-external-auth:out-handler ./handler-example.sh \
        certonly 2>/dev/null

Stdout:

{"cmd": "perform_challenge", "type": "dns-01", "domain": "bristol3.pki.enigmabridge.com", "token": "_QLSFTRw6qbQaN7gTglBYZuU1L7KAP-bXB_41CAnAvU", "validation": "667drNmQL3vX6bu8YZlgy0wKNBlCny8yrjF1lSaUndc", "txt_domain": "_acme-challenge.bristol3.pki.enigmabridge.com", "key_auth": "_QLSFTRw6qbQaN7gTglBYZuU1L7KAP-bXB_41CAnAvU.tRQM98JsABZRm5-NiotcgD212RAUPPbyeDP30Ob_7-0"}
{"cmd": "perform_challenge", "type": "dns-01", "domain": "bs3.pki.enigmabridge.com", "token": "3gJ87yANDpmuuKVL2ktfQ0_qURQ3mN0IfqgbTU_AGS4", "validation": "ejEDZXYEeYHUxqBAiX4csh8GKkeVX7utK6BBOBshZ1Y", "txt_domain": "_acme-challenge.bs3.pki.enigmabridge.com", "key_auth": "3gJ87yANDpmuuKVL2ktfQ0_qURQ3mN0IfqgbTU_AGS4.tRQM98JsABZRm5-NiotcgD212RAUPPbyeDP30Ob_7-0"}
{"cmd": "cleanup", "type": "dns-01", "status": "pending", "domain": "bristol3.pki.enigmabridge.com", "token": "_QLSFTRw6qbQaN7gTglBYZuU1L7KAP-bXB_41CAnAvU", "validation": "667drNmQL3vX6bu8YZlgy0wKNBlCny8yrjF1lSaUndc", "key_auth": "_QLSFTRw6qbQaN7gTglBYZuU1L7KAP-bXB_41CAnAvU.tRQM98JsABZRm5-NiotcgD212RAUPPbyeDP30Ob_7-0", "validated": null, "error": null}
{"cmd": "cleanup", "type": "dns-01", "status": "pending", "domain": "bs3.pki.enigmabridge.com", "token": "3gJ87yANDpmuuKVL2ktfQ0_qURQ3mN0IfqgbTU_AGS4", "validation": "ejEDZXYEeYHUxqBAiX4csh8GKkeVX7utK6BBOBshZ1Y", "key_auth": "3gJ87yANDpmuuKVL2ktfQ0_qURQ3mN0IfqgbTU_AGS4.tRQM98JsABZRm5-NiotcgD212RAUPPbyeDP30Ob_7-0", "validated": null, "error": null}
{"cmd": "report", "messages": [{"priority": 1, "on_crash": true, "lines": ["Congratulations! Your certificate and chain have been saved at /etc/letsencrypt/live/bristol3.pki.enigmabridge.com/fullchain.pem. Your cert will expire on 2017-01-25. To obtain a new or tweaked version of this certificate in the future, simply run certbot again. To non-interactively renew *all* of your certificates, run \"certbot renew\""]}]}

Stderr:

Saving debug log to /var/log/letsencrypt/letsencrypt.log
Starting new HTTPS connection (1): acme-staging.api.letsencrypt.org
Renewing an existing certificate
Performing the following challenges:
dns-01 challenge for bristol3.pki.enigmabridge.com
dns-01 challenge for bs3.pki.enigmabridge.com
Handler output (pre-perform):

-----BEGIN PRE-PERFORM-----
-----END PRE-PERFORM-----

Handler output (perform):

-----BEGIN PERFORM-----
cmd: perform
type: dns-01
domain: bristol3.pki.enigmabridge.com
uri: 
validation: 667drNmQL3vX6bu8YZlgy0wKNBlCny8yrjF1lSaUndc
key-auth: _QLSFTRw6qbQaN7gTglBYZuU1L7KAP-bXB_41CAnAvU.tRQM98JsABZRm5-NiotcgD212RAUPPbyeDP30Ob_7-0
z_domain: 
cert_path: 
key_path: 
port: 
json: {"cmd": "perform_challenge", "type": "dns-01", "domain": "bristol3.pki.enigmabridge.com", "token": "_QLSFTRw6qbQaN7gTglBYZuU1L7KAP-bXB_41CAnAvU", "validation": "667drNmQL3vX6bu8YZlgy0wKNBlCny8yrjF1lSaUndc", "txt_domain": "_acme-challenge.bristol3.pki.enigmabridge.com", "key_auth": "_QLSFTRw6qbQaN7gTglBYZuU1L7KAP-bXB_41CAnAvU.tRQM98JsABZRm5-NiotcgD212RAUPPbyeDP30Ob_7-0"}
-----END PERFORM-----

Self-verify of challenge failed.
Handler output (perform):

-----BEGIN PERFORM-----
cmd: perform
type: dns-01
domain: bs3.pki.enigmabridge.com
uri: 
validation: ejEDZXYEeYHUxqBAiX4csh8GKkeVX7utK6BBOBshZ1Y
key-auth: 3gJ87yANDpmuuKVL2ktfQ0_qURQ3mN0IfqgbTU_AGS4.tRQM98JsABZRm5-NiotcgD212RAUPPbyeDP30Ob_7-0
z_domain: 
cert_path: 
key_path: 
port: 
json: {"cmd": "perform_challenge", "type": "dns-01", "domain": "bs3.pki.enigmabridge.com", "token": "3gJ87yANDpmuuKVL2ktfQ0_qURQ3mN0IfqgbTU_AGS4", "validation": "ejEDZXYEeYHUxqBAiX4csh8GKkeVX7utK6BBOBshZ1Y", "txt_domain": "_acme-challenge.bs3.pki.enigmabridge.com", "key_auth": "3gJ87yANDpmuuKVL2ktfQ0_qURQ3mN0IfqgbTU_AGS4.tRQM98JsABZRm5-NiotcgD212RAUPPbyeDP30Ob_7-0"}
-----END PERFORM-----

Self-verify of challenge failed.
Handler output (post-perform):

-----BEGIN POST-PERFORM-----
-----END POST-PERFORM-----

Waiting for verification...
Cleaning up challenges
Handler output (pre-cleanup):

-----BEGIN PRE-CLEANUP-----
-----END PRE-CLEANUP-----

Handler output (cleanup):

-----BEGIN CLEANUP-----
cmd: cleanup
type: dns-01
domain: bristol3.pki.enigmabridge.com
status: pending
token: _QLSFTRw6qbQaN7gTglBYZuU1L7KAP-bXB_41CAnAvU
error: None
json: {"cmd": "cleanup", "type": "dns-01", "status": "pending", "domain": "bristol3.pki.enigmabridge.com", "token": "_QLSFTRw6qbQaN7gTglBYZuU1L7KAP-bXB_41CAnAvU", "validation": "667drNmQL3vX6bu8YZlgy0wKNBlCny8yrjF1lSaUndc", "key_auth": "_QLSFTRw6qbQaN7gTglBYZuU1L7KAP-bXB_41CAnAvU.tRQM98JsABZRm5-NiotcgD212RAUPPbyeDP30Ob_7-0", "validated": null, "error": null}
-----END CLEANUP-----

Handler output (cleanup):

-----BEGIN CLEANUP-----
cmd: cleanup
type: dns-01
domain: bs3.pki.enigmabridge.com
status: pending
token: 3gJ87yANDpmuuKVL2ktfQ0_qURQ3mN0IfqgbTU_AGS4
error: None
json: {"cmd": "cleanup", "type": "dns-01", "status": "pending", "domain": "bs3.pki.enigmabridge.com", "token": "3gJ87yANDpmuuKVL2ktfQ0_qURQ3mN0IfqgbTU_AGS4", "validation": "ejEDZXYEeYHUxqBAiX4csh8GKkeVX7utK6BBOBshZ1Y", "key_auth": "3gJ87yANDpmuuKVL2ktfQ0_qURQ3mN0IfqgbTU_AGS4.tRQM98JsABZRm5-NiotcgD212RAUPPbyeDP30Ob_7-0", "validated": null, "error": null}
-----END CLEANUP-----

Handler output (post-cleanup):

-----BEGIN POST-CLEANUP-----
-----END POST-CLEANUP-----

Generating key (2048 bits): /etc/letsencrypt/keys/0240_key-certbot.pem
Creating CSR: /etc/letsencrypt/csr/0240_csr-certbot.pem

HTTP

Run the certbot with the following command (just preferred-challenges changed):

certbot --staging \
        --text --agree-tos --email you@example.com \
        --expand --renew-by-default \
        --configurator certbot-external-auth:out \
        --certbot-external-auth:out-public-ip-logging-ok \
        -d "bristol3.pki.enigmabridge.com" \
        -d "bs3.pki.enigmabridge.com" \
        --preferred-challenges http \
        --certbot-external-auth:out-handler ./handler-example.sh \
        certonly 2>/dev/null

Stdout:

{"cmd": "perform_challenge", "type": "http-01", "domain": "bristol3.pki.enigmabridge.com", "token": "oRezdno4N00Cfp2bLqJe45Ad3mwJ0q3xqIr7HML7RcY", "validation": "oRezdno4N00Cfp2bLqJe45Ad3mwJ0q3xqIr7HML7RcY.tRQM98JsABZRm5-NiotcgD212RAUPPbyeDP30Ob_7-0", "uri": "http://bristol3.pki.enigmabridge.com/.well-known/acme-challenge/oRezdno4N00Cfp2bLqJe45Ad3mwJ0q3xqIr7HML7RcY", "command": "mkdir -p /tmp/certbot/public_html/.well-known/acme-challenge\ncd /tmp/certbot/public_html\nprintf \"%s\" oRezdno4N00Cfp2bLqJe45Ad3mwJ0q3xqIr7HML7RcY.tRQM98JsABZRm5-NiotcgD212RAUPPbyeDP30Ob_7-0 > .well-known/acme-challenge/oRezdno4N00Cfp2bLqJe45Ad3mwJ0q3xqIr7HML7RcY\n# run only once per server:\n$(command -v python2 || command -v python2.7 || command -v python2.6) -c \\\n\"import BaseHTTPServer, SimpleHTTPServer; \\\ns = BaseHTTPServer.HTTPServer(('', 80), SimpleHTTPServer.SimpleHTTPRequestHandler); \\\ns.serve_forever()\" ", "key_auth": "oRezdno4N00Cfp2bLqJe45Ad3mwJ0q3xqIr7HML7RcY.tRQM98JsABZRm5-NiotcgD212RAUPPbyeDP30Ob_7-0"}
{"cmd": "perform_challenge", "type": "http-01", "domain": "bs3.pki.enigmabridge.com", "token": "L1xK8bOfybszr3MSJpf0oNZkxCDLLY1qzCKUwSwDYj0", "validation": "L1xK8bOfybszr3MSJpf0oNZkxCDLLY1qzCKUwSwDYj0.tRQM98JsABZRm5-NiotcgD212RAUPPbyeDP30Ob_7-0", "uri": "http://bs3.pki.enigmabridge.com/.well-known/acme-challenge/L1xK8bOfybszr3MSJpf0oNZkxCDLLY1qzCKUwSwDYj0", "command": "mkdir -p /tmp/certbot/public_html/.well-known/acme-challenge\ncd /tmp/certbot/public_html\nprintf \"%s\" L1xK8bOfybszr3MSJpf0oNZkxCDLLY1qzCKUwSwDYj0.tRQM98JsABZRm5-NiotcgD212RAUPPbyeDP30Ob_7-0 > .well-known/acme-challenge/L1xK8bOfybszr3MSJpf0oNZkxCDLLY1qzCKUwSwDYj0\n# run only once per server:\n$(command -v python2 || command -v python2.7 || command -v python2.6) -c \\\n\"import BaseHTTPServer, SimpleHTTPServer; \\\ns = BaseHTTPServer.HTTPServer(('', 80), SimpleHTTPServer.SimpleHTTPRequestHandler); \\\ns.serve_forever()\" ", "key_auth": "L1xK8bOfybszr3MSJpf0oNZkxCDLLY1qzCKUwSwDYj0.tRQM98JsABZRm5-NiotcgD212RAUPPbyeDP30Ob_7-0"}
{"cmd": "cleanup", "type": "http-01", "status": "pending", "domain": "bristol3.pki.enigmabridge.com", "token": "oRezdno4N00Cfp2bLqJe45Ad3mwJ0q3xqIr7HML7RcY", "validation": "oRezdno4N00Cfp2bLqJe45Ad3mwJ0q3xqIr7HML7RcY.tRQM98JsABZRm5-NiotcgD212RAUPPbyeDP30Ob_7-0", "key_auth": "oRezdno4N00Cfp2bLqJe45Ad3mwJ0q3xqIr7HML7RcY.tRQM98JsABZRm5-NiotcgD212RAUPPbyeDP30Ob_7-0", "validated": null, "error": null}
{"cmd": "cleanup", "type": "http-01", "status": "pending", "domain": "bs3.pki.enigmabridge.com", "token": "L1xK8bOfybszr3MSJpf0oNZkxCDLLY1qzCKUwSwDYj0", "validation": "L1xK8bOfybszr3MSJpf0oNZkxCDLLY1qzCKUwSwDYj0.tRQM98JsABZRm5-NiotcgD212RAUPPbyeDP30Ob_7-0", "key_auth": "L1xK8bOfybszr3MSJpf0oNZkxCDLLY1qzCKUwSwDYj0.tRQM98JsABZRm5-NiotcgD212RAUPPbyeDP30Ob_7-0", "validated": null, "error": null}
{"cmd": "report", "messages": [{"priority": 1, "on_crash": true, "lines": ["Congratulations! Your certificate and chain have been saved at /etc/letsencrypt/live/bristol3.pki.enigmabridge.com/fullchain.pem. Your cert will expire on 2017-01-25. To obtain a new or tweaked version of this certificate in the future, simply run certbot again. To non-interactively renew *all* of your certificates, run \"certbot renew\""]}]}

Stderr:

Saving debug log to /var/log/letsencrypt/letsencrypt.log
Starting new HTTPS connection (1): acme-staging.api.letsencrypt.org
Renewing an existing certificate
Performing the following challenges:
http-01 challenge for bristol3.pki.enigmabridge.com
http-01 challenge for bs3.pki.enigmabridge.com
Handler output (pre-perform):

-----BEGIN PRE-PERFORM-----
-----END PRE-PERFORM-----

Handler output (perform):

-----BEGIN PERFORM-----
cmd: perform
type: http-01
domain: bristol3.pki.enigmabridge.com
uri: http://bristol3.pki.enigmabridge.com/.well-known/acme-challenge/oRezdno4N00Cfp2bLqJe45Ad3mwJ0q3xqIr7HML7RcY
validation: oRezdno4N00Cfp2bLqJe45Ad3mwJ0q3xqIr7HML7RcY.tRQM98JsABZRm5-NiotcgD212RAUPPbyeDP30Ob_7-0
key-auth: oRezdno4N00Cfp2bLqJe45Ad3mwJ0q3xqIr7HML7RcY.tRQM98JsABZRm5-NiotcgD212RAUPPbyeDP30Ob_7-0
z_domain: 
cert_path: 
key_path: 
port: 
json: {"cmd": "perform_challenge", "type": "http-01", "domain": "bristol3.pki.enigmabridge.com", "token": "oRezdno4N00Cfp2bLqJe45Ad3mwJ0q3xqIr7HML7RcY", "validation": "oRezdno4N00Cfp2bLqJe45Ad3mwJ0q3xqIr7HML7RcY.tRQM98JsABZRm5-NiotcgD212RAUPPbyeDP30Ob_7-0", "uri": "http://bristol3.pki.enigmabridge.com/.well-known/acme-challenge/oRezdno4N00Cfp2bLqJe45Ad3mwJ0q3xqIr7HML7RcY", "command": "mkdir -p /tmp/certbot/public_html/.well-known/acme-challenge\ncd /tmp/certbot/public_html\nprintf \"%s\" oRezdno4N00Cfp2bLqJe45Ad3mwJ0q3xqIr7HML7RcY.tRQM98JsABZRm5-NiotcgD212RAUPPbyeDP30Ob_7-0 > .well-known/acme-challenge/oRezdno4N00Cfp2bLqJe45Ad3mwJ0q3xqIr7HML7RcY\n# run only once per server:\n$(command -v python2 || command -v python2.7 || command -v python2.6) -c \\\n\"import BaseHTTPServer, SimpleHTTPServer; \\\ns = BaseHTTPServer.HTTPServer(('', 80), SimpleHTTPServer.SimpleHTTPRequestHandler); \\\ns.serve_forever()\" ", "key_auth": "oRezdno4N00Cfp2bLqJe45Ad3mwJ0q3xqIr7HML7RcY.tRQM98JsABZRm5-NiotcgD212RAUPPbyeDP30Ob_7-0"}
-----END PERFORM-----

Starting new HTTP connection (1): bristol3.pki.enigmabridge.com
Unable to reach http://bristol3.pki.enigmabridge.com/.well-known/acme-challenge/oRezdno4N00Cfp2bLqJe45Ad3mwJ0q3xqIr7HML7RcY: HTTPConnectionPool(host='bristol3.pki.enigmabridge.com', port=80): Max retries exceeded with url: /.well-known/acme-challenge/oRezdno4N00Cfp2bLqJe45Ad3mwJ0q3xqIr7HML7RcY (Caused by NewConnectionError('<requests.packages.urllib3.connection.HTTPConnection object at 0x7ff5bc837d90>: Failed to establish a new connection: [Errno 111] Connection refused',))
Self-verify of challenge failed.
Handler output (perform):

-----BEGIN PERFORM-----
cmd: perform
type: http-01
domain: bs3.pki.enigmabridge.com
uri: http://bs3.pki.enigmabridge.com/.well-known/acme-challenge/L1xK8bOfybszr3MSJpf0oNZkxCDLLY1qzCKUwSwDYj0
validation: L1xK8bOfybszr3MSJpf0oNZkxCDLLY1qzCKUwSwDYj0.tRQM98JsABZRm5-NiotcgD212RAUPPbyeDP30Ob_7-0
key-auth: L1xK8bOfybszr3MSJpf0oNZkxCDLLY1qzCKUwSwDYj0.tRQM98JsABZRm5-NiotcgD212RAUPPbyeDP30Ob_7-0
z_domain: 
cert_path: 
key_path: 
port: 
json: {"cmd": "perform_challenge", "type": "http-01", "domain": "bs3.pki.enigmabridge.com", "token": "L1xK8bOfybszr3MSJpf0oNZkxCDLLY1qzCKUwSwDYj0", "validation": "L1xK8bOfybszr3MSJpf0oNZkxCDLLY1qzCKUwSwDYj0.tRQM98JsABZRm5-NiotcgD212RAUPPbyeDP30Ob_7-0", "uri": "http://bs3.pki.enigmabridge.com/.well-known/acme-challenge/L1xK8bOfybszr3MSJpf0oNZkxCDLLY1qzCKUwSwDYj0", "command": "mkdir -p /tmp/certbot/public_html/.well-known/acme-challenge\ncd /tmp/certbot/public_html\nprintf \"%s\" L1xK8bOfybszr3MSJpf0oNZkxCDLLY1qzCKUwSwDYj0.tRQM98JsABZRm5-NiotcgD212RAUPPbyeDP30Ob_7-0 > .well-known/acme-challenge/L1xK8bOfybszr3MSJpf0oNZkxCDLLY1qzCKUwSwDYj0\n# run only once per server:\n$(command -v python2 || command -v python2.7 || command -v python2.6) -c \\\n\"import BaseHTTPServer, SimpleHTTPServer; \\\ns = BaseHTTPServer.HTTPServer(('', 80), SimpleHTTPServer.SimpleHTTPRequestHandler); \\\ns.serve_forever()\" ", "key_auth": "L1xK8bOfybszr3MSJpf0oNZkxCDLLY1qzCKUwSwDYj0.tRQM98JsABZRm5-NiotcgD212RAUPPbyeDP30Ob_7-0"}
-----END PERFORM-----

Starting new HTTP connection (1): bs3.pki.enigmabridge.com
Unable to reach http://bs3.pki.enigmabridge.com/.well-known/acme-challenge/L1xK8bOfybszr3MSJpf0oNZkxCDLLY1qzCKUwSwDYj0: HTTPConnectionPool(host='bs3.pki.enigmabridge.com', port=80): Max retries exceeded with url: /.well-known/acme-challenge/L1xK8bOfybszr3MSJpf0oNZkxCDLLY1qzCKUwSwDYj0 (Caused by NewConnectionError('<requests.packages.urllib3.connection.HTTPConnection object at 0x7ff5bc837f10>: Failed to establish a new connection: [Errno 111] Connection refused',))
Self-verify of challenge failed.
Handler output (post-perform):

-----BEGIN POST-PERFORM-----
-----END POST-PERFORM-----

Waiting for verification...
Cleaning up challenges
Handler output (pre-cleanup):

-----BEGIN PRE-CLEANUP-----
-----END PRE-CLEANUP-----

Handler output (cleanup):

-----BEGIN CLEANUP-----
cmd: cleanup
type: http-01
domain: bristol3.pki.enigmabridge.com
status: pending
token: oRezdno4N00Cfp2bLqJe45Ad3mwJ0q3xqIr7HML7RcY
error: None
json: {"cmd": "cleanup", "type": "http-01", "status": "pending", "domain": "bristol3.pki.enigmabridge.com", "token": "oRezdno4N00Cfp2bLqJe45Ad3mwJ0q3xqIr7HML7RcY", "validation": "oRezdno4N00Cfp2bLqJe45Ad3mwJ0q3xqIr7HML7RcY.tRQM98JsABZRm5-NiotcgD212RAUPPbyeDP30Ob_7-0", "key_auth": "oRezdno4N00Cfp2bLqJe45Ad3mwJ0q3xqIr7HML7RcY.tRQM98JsABZRm5-NiotcgD212RAUPPbyeDP30Ob_7-0", "validated": null, "error": null}
-----END CLEANUP-----

Handler output (cleanup):

-----BEGIN CLEANUP-----
cmd: cleanup
type: http-01
domain: bs3.pki.enigmabridge.com
status: pending
token: L1xK8bOfybszr3MSJpf0oNZkxCDLLY1qzCKUwSwDYj0
error: None
json: {"cmd": "cleanup", "type": "http-01", "status": "pending", "domain": "bs3.pki.enigmabridge.com", "token": "L1xK8bOfybszr3MSJpf0oNZkxCDLLY1qzCKUwSwDYj0", "validation": "L1xK8bOfybszr3MSJpf0oNZkxCDLLY1qzCKUwSwDYj0.tRQM98JsABZRm5-NiotcgD212RAUPPbyeDP30Ob_7-0", "key_auth": "L1xK8bOfybszr3MSJpf0oNZkxCDLLY1qzCKUwSwDYj0.tRQM98JsABZRm5-NiotcgD212RAUPPbyeDP30Ob_7-0", "validated": null, "error": null}
-----END CLEANUP-----

Handler output (post-cleanup):

-----BEGIN POST-CLEANUP-----
-----END POST-CLEANUP-----

Generating key (2048 bits): /etc/letsencrypt/keys/0242_key-certbot.pem
Creating CSR: /etc/letsencrypt/csr/0242_csr-certbot.pem

Future work

Add compatibility with Dehydrated DNS hooks
Communicate challenges via named pipes
Communicate challenges via sockets

Manual Installation

To install, first install certbot (either on the root or in a virtualenv), then:

python setup.py install

Credits

The plugin is based on the

Let's Encrypt nginx plugin
certbot-external
manual.py certbot plugin.

Once ticket 2782 is resolved this won't be needed.

EnigmaBridge / certbot-external-auth

readme

External authenticator for Certbot

Installation - pip

Usage

JSON Mode

Arguments

Errors

Examples

DNS

DNS installer

HTTP

Example - Dehydrated

Example - Handler

DNS

HTTP

Future work

Manual Installation

Credits