整一个Let's Encrypt证书


Let’s Encrypt 证书免费,对于我这种穷得很的学生党来说无疑是最佳的选择,虽然每次只有 90 天的有效期,但可以通过脚本定期更新,配好之后一劳永逸,何不为之?

安装 acme.sh

一行命令,简单的很

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#使用curl
curl https://get.acme.sh sh
#或者wget
wget -O - https://get.acme.sh sh

然后重新载入一下bashrc

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source ~/.bashrc

现在你就能使用acme.sh获取命令帮助

点击查看详情
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https://github.com/acmesh-official/acme.sh
v2.8.7
Usage: acme.sh command ...[parameters]....
Commands:
--help, -h Show this help message.
--version, -v Show version info.
--install Install acme.sh to your system.
--uninstall Uninstall acme.sh, and uninstall the cron job.
--upgrade Upgrade acme.sh to the latest code from https://github.com/acmesh-official/acme.sh.
--issue Issue a cert.
--signcsr Issue a cert from an existing csr.
--deploy Deploy the cert to your server.
--install-cert Install the issued cert to apache/nginx or any other server.
--renew, -r Renew a cert.
--renew-all Renew all the certs.
--revoke Revoke a cert.
--remove Remove the cert from list of certs known to acme.sh.
--list List all the certs.
--showcsr Show the content of a csr.
--install-cronjob Install the cron job to renew certs, you don't need to call this. The 'install' command can automatically install the cron job.
--uninstall-cronjob Uninstall the cron job. The 'uninstall' command can do this automatically.
--cron Run cron job to renew all the certs.
--toPkcs Export the certificate and key to a pfx file.
--toPkcs8 Convert to pkcs8 format.
--update-account Update account info.
--register-account Register account key.
--deactivate-account Deactivate the account.
--create-account-key Create an account private key, professional use.
--create-domain-key Create an domain private key, professional use.
--createCSR, -ccsr Create CSR , professional use.
--deactivate Deactivate the domain authz, professional use.
--set-notify Set the cron notification hook, level or mode.


Parameters:
--domain, -d domain.tld Specifies a domain, used to issue, renew or revoke etc.
--challenge-alias domain.tld The challenge domain alias for DNS alias mode: https://github.com/acmesh-official/acme.sh/wiki/DNS-alias-mode
--domain-alias domain.tld The domain alias for DNS alias mode: https://github.com/acmesh-official/acme.sh/wiki/DNS-alias-mode
--force, -f Used to force to install or force to renew a cert immediately.
--staging, --test Use staging server, just for test.
--debug Output debug info.
--output-insecure Output all the sensitive messages. By default all the credentials/sensitive messages are hidden from the output/debug/log for security.
--webroot, -w /path/to/webroot Specifies the web root folder for web root mode.
--standalone Use standalone mode.
--alpn Use standalone alpn mode.
--stateless Use stateless mode, see: https://github.com/acmesh-official/acme.sh/wiki/Stateless-Mode
--apache Use apache mode.
--dns [dns_cfdns_dpdns_cx/path/to/api/file] Use dns mode or dns api.
--dnssleep 300 The time in seconds to wait for all the txt records to take effect in dns api mode. It's not necessary to use this by default, acme.sh polls dns status automatically.

--keylength, -k [2048] Specifies the domain key length: 2048, 3072, 4096, 8192 or ec-256, ec-384, ec-521.
--accountkeylength, -ak [2048] Specifies the account key length: 2048, 3072, 4096
--log [/path/to/logfile] Specifies the log file. The default is: "/root/.acme.sh/acme.sh.log" if you don't give a file path here.
--log-level 12 Specifies the log level, default is 1.
--syslog [0367] Syslog level, 0: disable syslog, 3: error, 6: info, 7: debug.

These parameters are to install the cert to nginx/apache or any other server after issue/renew a cert:

--cert-file After issue/renew, the cert will be copied to this path.
--key-file After issue/renew, the key will be copied to this path.
--ca-file After issue/renew, the intermediate cert will be copied to this path.
--fullchain-file After issue/renew, the fullchain cert will be copied to this path.

--reloadcmd "service nginx reload" After issue/renew, it's used to reload the server.

--server SERVER ACME Directory Resource URI. (default: https://acme-v02.api.letsencrypt.org/directory)
--accountconf Specifies a customized account config file.
--home Specifies the home dir for acme.sh.
--cert-home Specifies the home dir to save all the certs, only valid for '--install' command.
--config-home Specifies the home dir to save all the configurations.
--useragent Specifies the user agent string. it will be saved for future use too.
--accountemail Specifies the account email, only valid for the '--install' and '--update-account' command.
--accountkey Specifies the account key path, only valid for the '--install' command.
--days Specifies the days to renew the cert when using '--issue' command. The default value is 60 days.
--httpport Specifies the standalone listening port. Only valid if the server is behind a reverse proxy or load balancer.
--tlsport Specifies the standalone tls listening port. Only valid if the server is behind a reverse proxy or load balancer.
--local-address Specifies the standalone/tls server listening address, in case you have multiple ip addresses.
--listraw Only used for '--list' command, list the certs in raw format.
--stopRenewOnError, -se Only valid for '--renew-all' command. Stop if one cert has error in renewal.
--insecure Do not check the server certificate, in some devices, the api server's certificate may not be trusted.
--ca-bundle Specifies the path to the CA certificate bundle to verify api server's certificate.
--ca-path Specifies directory containing CA certificates in PEM format, used by wget or curl.
--nocron Only valid for '--install' command, which means: do not install the default cron job. In this case, the certs will not be renewed automatically.
--noprofile Only valid for '--install' command, which means: do not install aliases to user profile.
--no-color Do not output color text.
--force-color Force output of color text. Useful for non-interactive use with the aha tool for HTML E-Mails.
--ecc Specifies to use the ECC cert. Valid for '--install-cert', '--renew', '--revoke', '--toPkcs' and '--createCSR'
--csr Specifies the input csr.
--pre-hook Command to be run before obtaining any certificates.
--post-hook Command to be run after attempting to obtain/renew certificates. No matter the obtain/renew is success or failed.
--renew-hook Command to be run once for each successfully renewed certificate.
--deploy-hook The hook file to deploy cert
--ocsp-must-staple, --ocsp Generate ocsp must Staple extension.
--always-force-new-domain-key Generate new domain key when renewal. Otherwise, the domain key is not changed by default.
--auto-upgrade [01] Valid for '--upgrade' command, indicating whether to upgrade automatically in future.
--listen-v4 Force standalone/tls server to listen at ipv4.
--listen-v6 Force standalone/tls server to listen at ipv6.
--openssl-bin Specifies a custom openssl bin location.
--use-wget Force to use wget, if you have both curl and wget installed.
--yes-I-know-dns-manual-mode-enough-go-ahead-please Force to use dns manual mode: https://github.com/acmesh-official/acme.sh/wiki/dns-manual-mode
--branch, -b Only valid for '--upgrade' command, specifies the branch name to upgrade to.

--notify-level 0123 Set the notification level: Default value is 2.
0: disabled, no notification will be sent.
1: send notifications only when there is an error.
2: send notifications when a cert is successfully renewed, or there is an error.
3: send notifications when a cert is skipped, renewed, or error.
--notify-mode 01 Set notification mode. Default value is 0.
0: Bulk mode. Send all the domain's notifications in one message(mail).
1: Cert mode. Send a message for every single cert.
--notify-hook [hookname] Set the notify hook
--revoke-reason [0-10] The reason for '--revoke' command. See: https://github.com/acmesh-official/acme.sh/wiki/revokecert

若不能使用,可手动添加

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echo '. "/root/.acme.sh/acme.sh.env"' >> ~/.bashrc
申请
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acme.sh --issue -d www.example.com -w /data/web/example/

解释:为域名www.example.com申请RSA证书,使用文件验证,站点目录为/data/web/example/ 欲使用ECC证书,可在尾部添加--keylength ec-256,例如

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acme.sh --issue -d www.example.com -w /data/web/example/ --keylength ec-256

同时也可以申请多个域名&泛解析

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acme.sh --issue -d example.com -d *.example.com -d example2.com -w /data/web/example/

或者不喜欢使用文件的验证方式,可以使用域名解析商的API,这里以dnspod为例:

  1. 到dnspod账号中心获取获取密钥别想试了密钥早删了
    bluer_07-25_20-44-27.png
  2. 配置环境变量
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    export DP_Id="this is your id"
    export DP_Key="this is your token"
    注意替换自己的 DNSPod API Key 和 ID
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    acme.sh --dns dns_dp --issue -d www.example.com
    同理可同时也可以申请多个域名&泛解析,这里就不在过多撰述
安装证书

证书默认保存在~/.acme.sh/,建议不要直接使用此目录下的文件 正确的使用方法是使用 –installcert 命令,并指定目标位置,然后证书文件会被 copy 到相应的位置,例如:

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acme.sh --installcert -d example.com \
--cert-file /data/cert/example.com/chain.pem \
--key-file /data/cert/example.com/privkey.pem \
--fullchain-file /data/cert/example.com/fullchain.pem \
--reloadcmd "service nginx restart"
更新证书

这里指定的所有参数都会被自动记录下来,以便在60天后被自动更新调用,你无需任何操作