377 lines
12 KiB
Markdown
377 lines
12 KiB
Markdown
# An ACME Shell script: acme.sh [](https://travis-ci.org/Neilpang/acme.sh)
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- An ACME protocol client written purely in Shell (Unix shell) language.
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- Full ACME protocol implementation.
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- Simple, powerful and very easy to use. You only need 3 minutes to learn it.
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- Bash, dash and sh compatible.
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- Simplest shell script for Let's Encrypt free certificate client.
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- Purely written in Shell with no dependencies on python or the official Let's Encrypt client.
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- Just one script to issue, renew and install your certificates automatically.
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- DOES NOT require `root/sudoer` access.
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It's probably the `easiest&smallest&smartest` shell script to automatically issue & renew the free certificates from Let's Encrypt.
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Wiki: https://github.com/Neilpang/acme.sh/wiki
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# [中文说明](https://github.com/Neilpang/acme.sh/wiki/%E8%AF%B4%E6%98%8E)
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# Tested OS
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| NO | Status| Platform|
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|----|-------|---------|
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|1|[](https://github.com/Neilpang/letest#here-are-the-latest-status)| Ubuntu
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|2|[](https://github.com/Neilpang/letest#here-are-the-latest-status)| Debian
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|3|[](https://github.com/Neilpang/letest#here-are-the-latest-status)|CentOS
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|4|[](https://github.com/Neilpang/letest#here-are-the-latest-status)|Windows (cygwin with curl, openssl and crontab included)
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|5|[](https://github.com/Neilpang/letest#here-are-the-latest-status)|FreeBSD
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|6|[](https://github.com/Neilpang/letest#here-are-the-latest-status)|pfsense
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|7|[](https://github.com/Neilpang/letest#here-are-the-latest-status)|openSUSE
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|8|[](https://github.com/Neilpang/letest#here-are-the-latest-status)|Alpine Linux (with curl)
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|9|[](https://github.com/Neilpang/letest#here-are-the-latest-status)|Archlinux
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|10|[](https://github.com/Neilpang/letest#here-are-the-latest-status)|fedora
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|11|[](https://github.com/Neilpang/letest#here-are-the-latest-status)|Kali Linux
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|12|[](https://github.com/Neilpang/letest#here-are-the-latest-status)|Oracle Linux
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|13|[](https://github.com/Neilpang/letest#here-are-the-latest-status)| Proxmox https://pve.proxmox.com/wiki/HTTPSCertificateConfiguration#Let.27s_Encrypt_using_acme.sh
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|14|-----| Cloud Linux https://github.com/Neilpang/le/issues/111
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|15|[](https://github.com/Neilpang/letest#here-are-the-latest-status)|OpenBSD
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|16|[](https://github.com/Neilpang/letest#here-are-the-latest-status)|Mageia
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|17|-----| OpenWRT: Tested and working. See [wiki page](https://github.com/Neilpang/acme.sh/wiki/How-to-run-on-OpenWRT)
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|18|[](https://github.com/Neilpang/letest#here-are-the-latest-status)|SunOS/Solaris
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|19|[](https://github.com/Neilpang/letest#here-are-the-latest-status)|Gentoo Linux
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For all build statuses, check our [daily build project](https://github.com/Neilpang/acmetest):
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https://github.com/Neilpang/acmetest
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# Supported modes
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- Webroot mode
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- Standalone mode
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- Apache mode
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- DNS mode
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# 1. How to install
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### 1. Install online
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Check this project: https://github.com/Neilpang/get.acme.sh
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```bash
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curl https://get.acme.sh | sh
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```
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Or:
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```bash
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wget -O - https://get.acme.sh | sh
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```
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### 2. Or, Install from git
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Clone this project and launch installation:
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```bash
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git clone https://github.com/Neilpang/acme.sh.git
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cd ./acme.sh
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./acme.sh --install
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```
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You `don't have to be root` then, although `it is recommended`.
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Advanced Installation: https://github.com/Neilpang/acme.sh/wiki/How-to-install
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The installer will perform 3 actions:
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1. Create and copy `acme.sh` to your home dir (`$HOME`): `~/.acme.sh/`.
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All certs will be placed in this folder too.
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2. Create alias for: `acme.sh=~/.acme.sh/acme.sh`.
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3. Create daily cron job to check and renew the certs if needed.
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Cron entry example:
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```bash
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0 0 * * * "/home/user/.acme.sh"/acme.sh --cron --home "/home/user/.acme.sh" > /dev/null
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```
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After the installation, you must close the current terminal and reopen it to make the alias take effect.
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Ok, you are ready to issue certs now.
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Show help message:
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```
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root@v1:~# acme.sh -h
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```
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# 2. Just issue a cert
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**Example 1:** Single domain.
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```bash
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acme.sh --issue -d example.com -w /home/wwwroot/example.com
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```
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**Example 2:** Multiple domains in the same cert.
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```bash
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acme.sh --issue -d example.com -d www.example.com -d cp.example.com -w /home/wwwroot/example.com
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```
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The parameter `/home/wwwroot/example.com` is the web root folder. You **MUST** have `write access` to this folder.
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Second argument **"example.com"** is the main domain you want to issue the cert for.
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You must have at least one domain there.
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You must point and bind all the domains to the same webroot dir: `/home/wwwroot/example.com`.
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Generated/issued certs will be placed in `~/.acme.sh/example.com/`
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The issued cert will be renewed automatically every **60** days.
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More examples: https://github.com/Neilpang/acme.sh/wiki/How-to-issue-a-cert
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# 3. Install the issued cert to Apache/Nginx etc.
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After you issue a cert, you probably want to install/copy the cert to your Apache/Nginx or other servers.
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You **MUST** use this command to copy the certs to the target files, **DO NOT** use the certs files in **~/.acme.sh/** folder, they are for internal use only, the folder structure may change in the future.
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**Apache** example:
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```bash
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acme.sh --installcert -d example.com \
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--certpath /path/to/certfile/in/apache/cert.pem \
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--keypath /path/to/keyfile/in/apache/key.pem \
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--fullchainpath /path/to/fullchain/certfile/apache/fullchain.pem \
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--reloadcmd "service apache2 restart"
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```
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**Nginx** example:
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```bash
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acme.sh --installcert -d example.com \
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--keypath /path/to/keyfile/in/nginx/key.pem \
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--fullchainpath /path/to/fullchain/nginx/cert.pem \
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--reloadcmd "service nginx restart"
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```
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Only the domain is required, all the other parameters are optional.
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Install/copy the issued cert/key to the production Apache or Nginx path.
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The cert will be `renewed every **60** days by default` (which is configurable). Once the cert is renewed, the Apache/Nginx service will be restarted automatically by the command: `service apache2 restart` or `service nginx restart`.
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# 4. Use Standalone server to issue cert
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**(requires you to be root/sudoer or have permission to listen on port 80 (TCP))**
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Port `80` (TCP) **MUST** be free to listen on, otherwise you will be prompted to free it and try again.
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```bash
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acme.sh --issue --standalone -d example.com -d www.example.com -d cp.example.com
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```
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More examples: https://github.com/Neilpang/acme.sh/wiki/How-to-issue-a-cert
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# 5. Use Standalone TLS server to issue cert
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**(requires you to be root/sudoer or have permission to listen on port 443 (TCP))**
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acme.sh supports `tls-sni-01` validation.
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Port `443` (TCP) **MUST** be free to listen on, otherwise you will be prompted to free it and try again.
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```bash
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acme.sh --issue --tls -d example.com -d www.example.com -d cp.example.com
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```
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More examples: https://github.com/Neilpang/acme.sh/wiki/How-to-issue-a-cert
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# 6. Use Apache mode
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**(requires you to be root/sudoer, since it is required to interact with Apache server)**
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If you are running a web server, Apache or Nginx, it is recommended to use the `Webroot mode`.
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Particularly, if you are running an Apache server, you should use Apache mode instead. This mode doesn't write any files to your web root folder.
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Just set string "apache" as the second argument and it will force use of apache plugin automatically.
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```
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acme.sh --issue --apache -d example.com -d www.example.com -d cp.example.com
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```
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More examples: https://github.com/Neilpang/acme.sh/wiki/How-to-issue-a-cert
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# 7. Use DNS mode:
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Support the `dns-01` challenge.
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```bash
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acme.sh --issue --dns -d example.com -d www.example.com -d cp.example.com
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```
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You should get an output like below:
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```
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Add the following txt record:
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Domain:_acme-challenge.example.com
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Txt value:9ihDbjYfTExAYeDs4DBUeuTo18KBzwvTEjUnSwd32-c
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Add the following txt record:
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Domain:_acme-challenge.www.example.com
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Txt value:9ihDbjxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
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Please add those txt records to the domains. Waiting for the dns to take effect.
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```
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Then just rerun with `renew` argument:
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```bash
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acme.sh --renew -d example.com
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```
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Ok, it's finished.
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# 8. Automatic DNS API integration
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If your DNS provider supports API access, we can use that API to automatically issue the certs.
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You don't have to do anything manually!
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### Currently acme.sh supports:
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1. CloudFlare.com API
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1. DNSPod.cn API
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1. CloudXNS.com API
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1. GoDaddy.com API
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1. OVH, kimsufi, soyoustart and runabove API
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1. AWS Route 53
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1. PowerDNS.com API
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1. lexicon DNS API: https://github.com/Neilpang/acme.sh/wiki/How-to-use-lexicon-dns-api
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(DigitalOcean, DNSimple, DNSMadeEasy, DNSPark, EasyDNS, Namesilo, NS1, PointHQ, Rage4 and Vultr etc.)
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1. LuaDNS.com API
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1. DNSMadeEasy.com API
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1. nsupdate API
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**More APIs coming soon...**
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If your DNS provider is not on the supported list above, you can write your own DNS API script easily. If you do, please consider submitting a [Pull Request](https://github.com/Neilpang/acme.sh/pulls) and contribute it to the project.
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For more details: [How to use DNS API](dnsapi)
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# 9. Issue ECC certificates
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`Let's Encrypt` can now issue **ECDSA** certificates.
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And we support them too!
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Just set the `length` parameter with a prefix `ec-`.
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For example:
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### Single domain ECC cerfiticate
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```bash
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acme.sh --issue -w /home/wwwroot/example.com -d example.com --keylength ec-256
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```
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### SAN multi domain ECC certificate
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```bash
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acme.sh --issue -w /home/wwwroot/example.com -d example.com -d www.example.com --keylength ec-256
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```
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Please look at the last parameter above.
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Valid values are:
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1. **ec-256 (prime256v1, "ECDSA P-256")**
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2. **ec-384 (secp384r1, "ECDSA P-384")**
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3. **ec-521 (secp521r1, "ECDSA P-521", which is not supported by Let's Encrypt yet.)**
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# 10. How to renew the issued certs
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No, you don't need to renew the certs manually. All the certs will be renewed automatically every **60** days.
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However, you can also force to renew any cert:
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```
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acme.sh --renew -d example.com --force
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```
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or, for ECC cert:
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```
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acme.sh --renew -d example.com --force --ecc
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```
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# 11. How to upgrade `acme.sh`
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acme.sh is in constant developement, so it's strongly recommended to use the latest code.
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You can update acme.sh to the latest code:
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```
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acme.sh --upgrade
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```
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You can also enable auto upgrade:
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```
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acme.sh --upgrade --auto-upgrade
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```
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Then **acme.sh** will be kept up to date automatically.
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Disable auto upgrade:
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```
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acme.sh --upgrade --auto-upgrade 0
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```
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# 12. Issue a cert from an existing CSR
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https://github.com/Neilpang/acme.sh/wiki/Issue-a-cert-from-existing-CSR
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# Under the Hood
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Speak ACME language using shell, directly to "Let's Encrypt".
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TODO:
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# Acknowledgments
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1. Acme-tiny: https://github.com/diafygi/acme-tiny
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2. ACME protocol: https://github.com/ietf-wg-acme/acme
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3. Certbot: https://github.com/certbot/certbot
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# License & Others
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License is GPLv3
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Please Star and Fork me.
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[Issues](https://github.com/Neilpang/acme.sh/issues) and [pull requests](https://github.com/Neilpang/acme.sh/pulls) are welcome.
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# Donate
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1. PayPal: donate@acme.sh
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[Donate List](https://github.com/Neilpang/acme.sh/wiki/Donate-list)
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