我正在尝试使用 apt-cacher-ng 来获取 elasticsearch、kibana 和logstash 的包，但没有成功。该缓存服务器不应充当通用代理，因此PassThroughPattern: .*对我来说这听起来不是一个好主意。
我尝试在中执行重写规则/etc/apt-cacher-ng/acng.conf（注意从 http 重写为 https）
Remap-elastic: http://artifacts.elastic.co ; https://artifacts.elastic.co
在客户端上，我在`/etc/apt/apt.conf.d/02proxy中有以下行
Acquire::http::Proxy "http://192.168.140.18:3142";
在/etc/apt/sources.list.d/elastic-7.x.list我有
deb http://artifacts.elastic.co/packages/7.x/apt stable main
apt update当我在客户端执行结果时
Err:4 http://artifacts.elastic.co/packages/7.x/apt stable InRelease
Connection failed [IP: 192.168.140.18 3142]
Reading package lists... Done
Building dependency tree
Reading state information... Done
All packages are up to date.
W: Failed to fetch http://artifacts.elastic.co/packages/7.x/apt/dists/stable/InRelease Connection failed [IP: 192.168.140.18 3142]
W: Some index files failed to download. They have been ignored, or old ones used instead.
在服务器上，调试选项设置为 7，详细程度设置为 2，我进入/var/log/apt-cacher-ng/apt-cacher.err
Thu Jul 1 12:22:44 2021|Returning to last state, 6
Thu Jul 1 12:23:10 2021|fileitem::DoDelayedUnregAndCheck, nextRunTime now: 1625134998
Thu Jul 1 12:23:13 2021|Detected incoming connection from the TCP socket
Thu Jul 1 12:23:13 2021|Client name: 192.168.140.5
Thu Jul 1 12:23:13 2021|Decoded request URI: http://artifacts.elastic.co/packages/7.x/apt/dists/stable/InRelease
Thu Jul 1 12:23:13 2021|Processing new job, GET http://artifacts.elastic.co/packages/7.x/apt/dists/stable/InRelease HTTP/1.1
Thu Jul 1 12:23:15 2021|Outgoing connection for Connection timed outartifacts.elastic.co, Port: 443
Thu Jul 1 12:23:15 2021|Outgoing connection for Network is unreachableartifacts.elastic.co, Port: 443
Thu Jul 1 12:23:16 2021|tcpconnect::ExpireCache, nextRunTime now: 1625135005
Thu Jul 1 12:23:18 2021|fileitem::DoDelayedUnregAndCheck, nextRunTime now: 9223372036854775805
Thu Jul 1 12:23:25 2021|tcpconnect::ExpireCache, nextRunTime now: 9223372036854775805
Thu Jul 1 12:23:45 2021|Outgoing connection for Connection timed outartifacts.elastic.co, Port: 443
Thu Jul 1 12:23:45 2021|Outgoing connection for Network is unreachableartifacts.elastic.co, Port: 443
所以我尝试了 apt-cacher-ng 的作者喜欢的方法，这次我没有在服务器上对 elastic.co 进行任何特定的重写，而是在客户端的文件中进行/etc/apt/sources.list.d/elastic-7.x.list重写
deb http://192.168.140.18:3142/HTTPS///artifacts.elastic.co/packages/7.x/apt stable main
apt update在客户端执行结果
Err:4 http://192.168.140.18:3142/HTTPS///artifacts.elastic.co/packages/7.x/apt stable InRelease
Connection failed [IP: 192.168.140.18 3142]
Reading package lists... Done
Building dependency tree
Reading state information... Done
All packages are up to date.
W: Failed to fetch http://192.168.140.18:3142/HTTPS///artifacts.elastic.co/packages/7.x/apt/dists/stable/InRelease Connection failed [IP: 192.168.140.18 3142]
W: Some index files failed to download. They have been ignored, or old ones used instead.
在服务器上，/var/log/apt-cacher-ng/apt-cacher.err调试选项设置为 7，详细程度设置为 2，我得到
Thu Jul 1 11:40:39 2021|Returning to last state, 6
Thu Jul 1 11:40:39 2021|Decoded request URI: /HTTPS///artifacts.elastic.co/packages/7.x/apt/dists/stable/InRelease
Thu Jul 1 11:40:39 2021|Processing new job, GET /HTTPS///artifacts.elastic.co/packages/7.x/apt/dists/stable/InRelease HTTP/1.1
Thu Jul 1 11:41:09 2021|Detected incoming connection from the TCP socket
Thu Jul 1 11:41:09 2021|Client name: 192.168.140.5
Thu Jul 1 11:41:09 2021|Decoded request URI: /HTTPS///artifacts.elastic.co/packages/7.x/apt/dists/stable/InRelease
Thu Jul 1 11:41:09 2021|Processing new job, GET /HTTPS///artifacts.elastic.co/packages/7.x/apt/dists/stable/InRelease HTTP/1.1
Thu Jul 1 11:41:10 2021|Outgoing connection for Connection timed outartifacts.elastic.co, Port: 443
Thu Jul 1 11:41:10 2021|Outgoing connection for Network is unreachableartifacts.elastic.co, Port: 443
Thu Jul 1 11:41:40 2021|Outgoing connection for Connection timed outartifacts.elastic.co, Port: 443
Thu Jul 1 11:41:40 2021|Outgoing connection for Network is unreachableartifacts.elastic.co, Port: 443
除了 Debug 和 Verbosity 之外，acng.conf文件中的所有其他选项都为默认设置，并且它对于像 debian 这样的普通存储库运行良好，但我无法让它适用于 elastic 或 proxmox。
欢迎所有想法。
答案1
这对我来说太愚蠢了。
我尝试通过命令行从 elastic.co 服务器下载 InRelease 文件（我应该从这里开始），但发现它被阻止了。
查看 Proxmox 级别的防火墙规则，你会发现，端口 443 是不允许的（默认规则是阻止）。允许端口 443 上的传出流量，然后我尝试的第一个版本工作正常。
如果不是 DNS，那就是防火墙吧？