安装非预设版号certbot apache plugin / installing certbot apache plugin with non-default version number

在大部分情况下安装预设版本都可以正常无痛完成，但有时候就是会遇到不一样的情况。

因为有台server之前要安装route53 plugin ，然后要装预设的版本一直无法下载成功，解决方式就是更新certbot 版本。但接下来要安装apache plugin 的时候就发现apt-get install 预设版本，没有出现错误讯息，但是实际上执行certbot –apache 的时候会出现错误讯息说没有apache plugin，才发现虽然安装时没有错误讯息，但实际上apache plugin无法运作(等同于安装失败)，原来就是因为版号不对的关系。检查一下已经安装的plugin ，真的没有apache plugin存在。

 $ sudo certbot plugin
Saving debug log to /var/log/letsencrypt/letsencrypt.log

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* dns-route53
Description: Obtain certificates using a DNS TXT record (if you are using AWS
Route53 for DNS).
Interfaces: IAuthenticator, IPlugin
Entry point: dns-route53 = certbot_dns_route53.dns_route53:Authenticator

* standalone
Description: Spin up a temporary webserver
Interfaces: IAuthenticator, IPlugin
Entry point: standalone = certbot._internal.plugins.standalone:Authenticator

* webroot
Description: Place files in webroot directory
Interfaces: IAuthenticator, IPlugin
Entry point: webroot = certbot._internal.plugins.webroot:Authenticator
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解决方式就是透过pip3 来指定apache plugin 版本来安装。 ( reference )

 $ sudo pip3 install certbot_apache==0.40.1

但是这时候又会喷另一个错误讯息，说acme版本不对

ERROR: certbot 1.0.0 has requirement acme>=0.40.0, but you'll have acme 0.31.0 which is incompatible.

只好先升级acme，再来安装apache plugin

 $ sudo pip3 install acme==0.40.1

完成之后检查plugin 就可以发现apache plugin 正常安装上去了，接下来就可以用–apache -d 来做ssl 凭证申请了。

 $ sudo certbot plugin
Saving debug log to /var/log/letsencrypt/letsencrypt.log

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* apache
Description: Apache Web Server plugin
Interfaces: IAuthenticator, IInstaller, IPlugin
Entry point: apache = certbot_apache.entrypoint:ENTRYPOINT

* dns-route53
Description: Obtain certificates using a DNS TXT record (if you are using AWS
Route53 for DNS).
Interfaces: IAuthenticator, IPlugin
Entry point: dns-route53 = certbot_dns_route53.dns_route53:Authenticator

* standalone
Description: Spin up a temporary webserver
Interfaces: IAuthenticator, IPlugin
Entry point: standalone = certbot._internal.plugins.standalone:Authenticator

* webroot
Description: Place files in webroot directory
Interfaces: IAuthenticator, IPlugin
Entry point: webroot = certbot._internal.plugins.webroot:Authenticator
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Original link: Phanix's Blog