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72 lines
2.6 KiB
Markdown
72 lines
2.6 KiB
Markdown
# letsencrypt.sh
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This is a client for signing certificates with an ACME-server (currently only provided by letsencrypt) implemented as a relatively simple shell-script.
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It uses the `openssl` utility for everything related to actually handling keys and certificates, so you need to have that installed.
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Other dependencies are (for now): curl, sed
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Perl no longer is a dependency.
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The only remaining perl code in this repository is the script you can use to convert your existing letsencrypt-keyfile into something openssl (and this script) can read.
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Current features:
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- Signing of a list of domains
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- Renewal if a certificate is about to expire
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- Certificate revocation
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Please keep in mind that this software and even the acme-protocol are relatively young and may still have some unresolved issues.
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Feel free to report any issues you find with this script or contribute by submitting a pullrequest.
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## Usage:
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Add domains to domains.txt like in this example:
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```
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example.com www.example.com
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example.net www.example.net wiki.example.net
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```
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This states that there should be two certificates `example.com` and `example.net`,
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with the other domains in the corresponding line being their alternative names.
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You'll also need to set up a webserver to serve the challenge-response directory as configured with `$WELLKNOWN`,
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or you can use the hook in the script if you want to deploy it some other way (e.g. copy it to a server via scp).
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After doing those two things you can just `./letsencrypt.sh`, and it should generate certificates.
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It can be used inside a cronjob as it automatically detects if a certificate is about to expire.
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### Certificate revocation
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Usage: `./letsencrypt.sh revoke path/to/cert.pem`
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### nginx config
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If you want to use nginx you can set up a location block to serve your challenge responses:
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```
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location /.well-known/acme-challenge {
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root /var/www/letsencrypt;
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}
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```
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## Import
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### import-account.pl
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This perl-script can be used to import the account key from the original letsencrypt client.
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You should copy `private_key.json` to the same directory as the script.
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The json-file can be found in a subdirectory of `/etc/letsencrypt/accounts/acme-v01.api.letsencrypt.org/directory`.
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Usage: `perl import-account.pl`
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### import-certs.sh
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This script can be used to import private keys and certificates created by the original letsencrypt client.
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By default it expects the certificates to be found under `/etc/letsencrypt`, which is the default output directory of the original client.
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You can change the path by setting LETSENCRYPT in your config file: ```LETSENCRYPT="/etc/letsencrypt"```.
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Usage: `./import-certs.sh`
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