317 lines
11 KiB
Markdown
317 lines
11 KiB
Markdown
[](https://gitter.im/Daplie/letsencrypt-express?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
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| [letsencrypt (library)](https://github.com/Daplie/node-letsencrypt)
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| **letsencrypt-cli**
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| [letsencrypt-express](https://github.com/Daplie/letsencrypt-express)
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| [letsencrypt-koa](https://github.com/Daplie/letsencrypt-koa)
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| [letsencrypt-hapi](https://github.com/Daplie/letsencrypt-hapi)
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# letsencrypt-cli (for node.js)
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CLI for node-letsencrypt modeled after the official client.
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* Free SSL Certificates
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* 90-day certificate lifetime
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* One-off standalone registration / renewal
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* On-the-fly registration / renewal via webroot
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## Install Node
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For **Windows**:
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Choose **Stable** from <https://nodejs.org/en/>
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For Linux and **OS X**:
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```
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curl -L bit.ly/nodejs-min | bash
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```
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# Install LetsEncrypt
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```bash
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npm install -g letsencrypt-cli@2.x
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```
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## Usage
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These commands are shown using the **testing server**.
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Want to use the **live server**?
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1. remove the `--server https://acme-staging.api.letsencrypt.org/directory`
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2. or change it to `--server https://acme-v01.api.letsencrypt.org/directory`
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**Note**: This has really only been tested with single domains so if
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multiple domains doesn't work for you, file a bug.
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### Standalone (primarily for testing)
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You can run standalone mode to get a cert **on the server**. You either use an
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http-01 challenge (the default) on port 80, or a tls-sni-01 challenge on port
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443 (or 5001). Like so:
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```bash
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letsencrypt certonly \
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--agree-tos --email john.doe@example.com \
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--standalone \
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--domains example.com,www.example.com \
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--server https://acme-staging.api.letsencrypt.org/directory \
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--config-dir ~/letsencrypt/etc
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```
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or
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```bash
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letsencrypt certonly \
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--agree-tos --email john.doe@example.com \
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--standalone --tls-sni-01-port 443 \
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--domains example.com,www.example.com \
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--server https://acme-staging.api.letsencrypt.org/directory \
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--config-dir ~/letsencrypt/etc
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```
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Then you can see your certs at `~/letsencrypt/etc/live`.
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```
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ls ~/letsencrypt/etc/live
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```
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This option is great for testing, but since it requires the use of
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the same ports that your webserver needs, it isn't a good choice
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for production.
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### WebRoot (production option 1)
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You can specify the path to where you keep your `index.html` with `webroot`, as
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long as your server is serving plain HTTP on port 80.
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For example, if I want to get a domain for `example.com` and my `index.html` is
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at `/srv/www/example.com`, then I would use this command:
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```bash
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sudo letsencrypt certonly \
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--agree-tos --email john.doe@example.com \
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--webroot --webroot-path /srv/www/example.com \
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--config-dir /etc/letsencrypt \
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--domains example.com,www.example.com \
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--server https://acme-staging.api.letsencrypt.org/directory
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```
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Note that we use `sudo` because in this example we are using `/etc/letsencrypt`
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as the cert directory rather than `~/letsencrypt/etc`, which we used in the previous example.
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Then see your brand new shiny certs:
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```
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ls /etc/letsencrypt/live/
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```
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You can use a cron job to run the script above every 80 days (the certificates expire after 90 days)
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so that you always have fresh certificates.
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### TLS SNI (production option 2)
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You can also integrate with a secure server. This is more complicated than the
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webroot option, but it allows you to obtain certificates with only port 443
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open. This facility was developed for the Apache webserver, but it could work
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with other servers as long as they support server name indication (SNI) and you
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can provide a configuration file template and hooks to install and uninstall it
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(without downtime). In fact, it doesn't even need to be a webserver (though it
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must run on port 443); it could be another server that performs SSL/TLS
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negotiation with SNI.
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The process works something like this. You would run:
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```bash
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sudo letsencrypt certonly \
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--agree-tos --email john.doe@example.com \
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--apache \
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--config-dir /etc/letsencrypt \
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--domains example.com,www.example.com \
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--server https://acme-staging.api.letsencrypt.org/directory
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```
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Three files are then generated:
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* a configuration fragment: `some-long-string.conf`
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* a challenge-fulfilling certificate: `the-same-long-string.crt`
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* a private key: `the-same-long-string.key`
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A hook is then run to enable the fragment, e.g. by linking it (it should not be
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moved) into a `conf.d` directory (for Apache on Debian, `sites-enabled`). A
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second hook is then run to check the configuration is valid, to avoid
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accidental downtime, and then another to signal to the server to reload the
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configuration. The server will now serve the generated certificate on a special
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domain to prove you own the domain you're getting a certificate for.
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After the domain has been validated externally, hooks are run to disable the
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configuration fragment, and again check and reload the configuration.
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Find your brand new certs in:
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```
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ls /etc/letsencrypt/live/
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```
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To tailor this for your server setup, see all the `apache-` options in the list
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below. Also note that the following substitutions are available for use in the
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commands supplied to those options, and in any alternative template you
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provide:
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* `{{{token}}}`: the token
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* `{{{domain}}}`: the domain for which a certificate is being sought (beware of
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this if using multiple domains per certificate)
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* `{{{subject}}}`: the domain for which the generated challenge-fulfilling
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certificate must be used (only available when generating it)
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* `{{{cert}}}`: the path to the generated certificate: `apache-path/token.crt`
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* `{{{privkey}}}`: the path to the generated private key: `apache-path/token.key`
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* `{{{conf}}}`: the path to the generated config file: `apache-path/token.conf`
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* `{{{bind}}}`: the value of the `apache-bind` option
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* `{{{port}}}`: the value of the `apache-port` option
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* `{{{webroot}}}`: the value of the `apache-webroot` option
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### Interactive (for debugging)
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The token (for all challenge types) and keyAuthorization (only for https-01)
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will be printed to the screen and you will be given time to copy it wherever
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(file, dns record, database, etc) and the process will complete once you hit `enter`.
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```bash
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sudo letsencrypt certonly \
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--agree-tos --email john.doe@example.com \
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--manual
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--config-dir /etc/letsencrypt \
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--domains example.com,www.example.com \
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--server https://acme-staging.api.letsencrypt.org/directory
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```
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## Test with a free domain
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```bash
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# Install Daplie DNS
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npm install -g ddns-cli
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# see terms of use
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ddns --help
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# agree to terms and get domain
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ddns --random --email user@example.com --agree
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# the default is to use the ip address from which
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# you can the command, but you can also assign the
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# ip manually
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ddns --random --email user@example.com --agree -a '127.0.0.1'
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```
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Example domain:
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```
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rubber-duck-42.daplie.me
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```
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## Run without Root
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If you'd like to allow node.js to use privileged ports `80` and `443`
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(and everything under 1024 really) without being run as `root` or `sudo`,
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you can use `setcap` to do so. (it may need to be run any time you reinstall node as well)
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```bash
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sudo setcap cap_net_bind_service=+ep /usr/local/bin/node
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```
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By default `node-letsencrypt` assumes your home directory `~/letsencrypt/`, but if
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you really want to use `/etc/letsencrypt`, `/var/lib/letsencrypt/`, and `/var/log/letsencrypt`
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you could change the permissions on them. **Probably a BAD IDEA**. Probabry a security risk.
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```
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# PROBABLY A BAD IDEA
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sudo chown -R $(whoami) /etc/letsencrypt /var/lib/letsencrypt /var/log/letsencrypt
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```
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## Command line Options
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```
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Usage:
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letsencrypt [OPTIONS] [ARGS]
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Options:
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--email EMAIL Email used for registration and recovery contact. (default: null)
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--domains URL Domain names to apply. For multiple domains you can enter a comma
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separated list of domains as a parameter. (default: [])
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--duplicate BOOLEAN Allow getting a certificate that duplicates an existing one
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--agree-tos BOOLEAN Agree to the Let's Encrypt Subscriber Agreement
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--debug BOOLEAN show traces and logs
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--tls-sni-01-port NUMBER Use TLS-SNI-01 challenge type with this port.
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(must be 443 with most production servers) (Boulder allows 5001 in testing mode)
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--http-01-port [NUMBER] Use HTTP-01 challenge type with this port, used for SimpleHttp challenge. (Default is 80)
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(must be 80 with most production servers)
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--dns-01 Use DNS-01 challenge type.
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--rsa-key-size [NUMBER] Size (in bits) of the RSA key. (Default is 2048)
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--cert-path STRING Path to where new cert.pem is saved
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(Default is :conf/live/:hostname/cert.pem)
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--fullchain-path [STRING] Path to where new fullchain.pem (cert + chain) is saved
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(Default is :conf/live/:hostname/fullchain.pem)
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--chain-path [STRING] Path to where new chain.pem is saved
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(Default is :conf/live/:hostname/chain.pem)
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--domain-key-path STRING Path to privkey.pem to use for domain (default: generate new)
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--config-dir STRING Configuration directory. (Default is ~/letsencrypt/etc/)
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--server [STRING] ACME Directory Resource URI. (Default is https://acme-v01.api.letsencrypt.org/directory))
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--apache BOOLEAN Obtain certs using Apache virtual hosts.
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--apache-path STRING Path in which to store files for Apache virtual hosts.
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(Default is ~/letsencrypt/apache)
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--apache-bind [STRING] IP address to use for Apache virtual host. (Default is *)
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(This is used in the default template.)
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--apache-port [NUMBER] Port to use for Apache virtual host. (Default is 443)
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(This is used in the default template.)
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--apache-webroot STRING Webroot to use for Apache virtual host (e.g. an empty dir).
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Nothing should actually be served from here. (Default is /var/www)
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--apache-template STRING Alternative template to use for Apache configuration file.
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--apache-enable STRING Command to run to enable the site in Apache.
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(Default is `ln -s {{{conf}}} /etc/apache2/sites-enabled`)
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--apache-check STRING Command to run to check Apache configuration.
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(Default is `apache2ctl configtest`)
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--apache-reload STRING Command to run to reload Apache.
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(Default is `/etc/init.d/apache2 reload`)
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--apache-disable STRING Command to run to disable the site in Apache.
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(Default is `rm /etc/apache2/sites-enabled/{{{token}}}.conf`)
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--standalone [BOOLEAN] Obtain certs using a "standalone" webserver. (Default is true)
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--manual [BOOLEAN] Print the token and key to the screen and wait for you to hit enter,
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giving you time to copy it somewhere before continuing. (Default is false)
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--webroot BOOLEAN Obtain certs by placing files in a webroot directory.
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--webroot-path STRING public_html / webroot path.
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-h, --help Display help and usage details
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```
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Note: some of the options may not be fully implemented. If you encounter a problem, please report a bug on the issues page.
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