Let's Certbot is a tool builds automated scripts base on Certbot for obtaining, renewing, deploying SSL certificates.
In order to verify your domains, Let's Certbot uses dns challenge on Certbot. Compared to http challenge, it means you can obtain a wildcard certificate and don't need to touch webserver.
On dns challenge, you need to set a TXT DNS record with specific contents on domain. Let's Certbot will help you do it via domain name registrar DNS API.
Supports domain name registrar at persent:
Let's Certbot as a Certbot tool supports docker and non-docker environments.
Clone this repository to get Let's Certbot:
$ git clone [email protected]:jinhucheung/letscertbot.git
Then copy configurations:
$ cd letscertbot
$ cp config.json.example config.json
Run Let's Certbot with Docker:
$ sudo docker run --rm --name letscertbot -v "$your_letscertbot_home/config.json:/app/config.json" -v "$your_letscertbot_home/tlds.txt:/app/tlds.txt" -v "/etc/letsencrypt:/etc/letsencrypt" -v "/var/lib/letsencrypt:/var/lib/letsencrypt" jimcheung/letscertbot
You can run Let's Certbot with Compose if Docker Compose is installed:
$ sudo docker-compose run --rm app
Let's Certbot requires Python 2.7 or 3.4+ running on a UNIX-like operation system.
First, you need to confirm if python is installed:
$ python --version
If everything is ok, get Certbot on Official Document for your system.
After installing Certbot, run Certbot with root:
$ sudo certbot --version
Before running Let's Certbot, you have the following configuration to change:
| Name | Required | Description | Default |
|---|---|---|---|
| base.email | true | Email address for important renewal notifications | |
| dns | true | dns settings | |
| dns.wait_time | false | dns challenge wait time (seconds) | 20 |
| dns.aliyun | false | Access Key Id and Access Key Secret of Aliyun account | |
| dns.qcloud | false | Secret Id and Secret Key of Tencent Cloud account | |
| dns.huaweicloud | false | Access Key Id and Secret Access Key of Huawei Cloud account | |
| dns.godaddy | false | API Key and API Secret of GoDaddy account | |
| dns.cloudflare | false | API Key or API Token of Cloudflare account | |
| log.enable | false | Whether to enable log tracker | false |
| log.logfile | false | The path of log file | ./log/application.log |
| deploy.servers | false | The deployment servers | |
| deploy.server.enable | false | Whether to run deployment script for server | false |
| deploy.server.host | false | The host of deployment server, set "localhost" for local server, required on deploy. | |
| deploy.server.port | false | The port of remote server SSH daemon | 22 |
| deploy.server.user | false | The user of remote server uses SSH login, run command | root |
| deploy.server.password | false | The password of remote user | |
| deploy.server.deploy_to | false | The stored path of certificate in server | /etc/letsencrypt/live |
| deploy.server.restart_nginx | false | Whether to restart nginx in server | false |
| deploy.server.after_hook | false | The command that server runs after successful deployment |
In addition, tlds.txt contains some top level domains(TLD) and second level domains(SLD) for separating subdomain and main domain. If the TLD or SLD of your domain is not existed in tlds.txt, you need to append it in list.
Before obtaining certificate, you can run manual script (manual.py) to test DNS API with with your access key:
# Running with docker
$ sudo docker-compose run --rm app manual --test --domain your.example.com --dns aliyun
# Running without docker
$ sudo python ./bin/manual.py --test --domain your.example.com --dns aliyun
The script will place _acme-challenge TXT record under your domain via specified DNS API.
Run the obtainment script (obtain.py) with root for obtaining certificate:
# Running with docker
$ sudo docker-compose run --rm app obtain -d your.example.com *.your.example.com
# Running without docker
$ sudo python ./bin/obtain.py -d your.example.com *.your.example.com
Then you will get a wildcard certificate names your.example.com in /etc/letsencrypt/live/
You can specify certificate name with --cert argument:
# Running with docker
$ sudo docker-compose run --rm app obtain -d x.example.com y.example.com --cert xny.example.com
# Running without docker
$ sudo python ./bin/obtain.py -d x.example.com y.example.com --cert xny.example.com
If your domain name registrar doesn't support api access, or if you're concerned about security problems from giving the access tokento your main domain, then you can use DNS alias argument:
$ sudo docker-compose run --rm app obtain -d x.main_domain.com y.main_domain.com --dns qcloud --challenge-alias alias_domain.com
# Running without docker
$ sudo python ./bin/obtain.py -d x.main_domain.com y.main_domain.com --dns qcloud --challenge-alias alias_domain.com
In the above command, Let's Certbot transfers x.main_domain.com, y.main_domain.com challenge to alias_domain.com, and sets the txt record of alias_domain.com via qcloud API. So you need to add CNAME record for challenged domain in advance:
_acme-challenge.x.main_domain.com => _acme-challenge.alias_domain.com
_acme-challenge.y.main_domain.com => _acme-challenge.alias_domain.com
Renew certificates with the renewal script (renewal.py):
# Running with docker
$ sudo docker-compose run --rm app renewal
# Running without docker
$ sudo python ./bin/renewal.py
Then Certbot will try renew all certificates which will be expired soon.
You can add renewal script as schedule task to crontab:
# Running with docker
0 0 */7 * * sudo docker-compose -f $your_letscertbot_home/docker-compose.yml run --rm app renewal > /var/log/letscertbot-renewal.log 2>&1
# Running without docker
0 0 */7 * * sudo $your_letscertbot_home/bin/renewal.py > /var/log/letscertbot-renewal.log 2>&1
The task will run renewal script every 7 days.
If you need to force renew specified certificates, provide --force and --certs arguments:
# Running with docker
$ sudo docker-compose run --rm app renewal --certs xny.example.com --force
# Running without docker
$ sudo python ./bin/renewal.py --certs xny.example.com --force
If you set deploy.server.enable to true, Certbot will run the deployment script (deploy.py) on deploy hook. The script receives renewed certificate and push it to configured servers.
Let's Certbot deploys certificate to remote server via SSH, it means that local server runs Certbot must be able to connect remote server. In order to connect, you need to add the public key of local server to remote server or provide deploy.server.password for sshpass.
In order to add certificate to deploy.server.deploy_to or restart nginx, Let's Certbot requires deploy.server.user has permissions.
You can get deployment script by running the following command:
# Running with docker
$ sudo docker-compose run --rm app deploy --check
# Running without docker
$ sudo python ./bin/deploy.py --check
And push certificate to server:
# Running with docker
$ sudo docker-compose run --rm app deploy --push --cert $certificate_name --server $server_host
# Running without docker
$ sudo python ./bin/deploy.py --push --cert $certificate_name --server $server_host
Note: If deploy.server enables SELinux in enforcing mode, you need to confirm that nginx has access to the SElinux security context of deploy.server.deploy_to.
Note: If you run Let's Certbot via container and restart nginx in local server, you should set local server as remote.
Bug report or pull request are welcome.
- Fork it
- Create your feature branch (git checkout -b my-new-feature)
- Commit your changes (git commit -am 'Add some feature')
- Push to the branch (git push origin my-new-feature)
Please write unit test with your code if necessary.
The repository is available as open source under the terms of the MIT License.
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