問題描述
我已經設置好 apt-mirror 並在可以訪問互聯網的機器上成功下載了最新的 ubuntu 包。目標是在無法訪問互聯網的目標機器上執行 apt-get update 時，將此機器用作存儲庫。兩台機器都設置了手動 IP 地址，並且兩台機器都運行 Ubuntu 16.04 作為操作係統。目標機器中的 etc/apt/sources.list 隻有 1 行：
deb http://<local_repo_IP>/ubuntu/ xenial main restricted multiverse universe
但是當我在目標機器上執行 sudo apt-get update 時，出現以下錯誤：
Ign:1 http://<local_repo_IP>/ubuntu/dists/xenial main InRelease
Ign:2 http://<local_repo_IP>/ubuntu/dists/xenial main Release
Ign:3 http://<local_repo_IP>/ubuntu/dists/xenial main/restricted amd64 Packages
Ign:4 http://<local_repo_IP>/ubuntu/dists/xenial main/restricted i386 Packages
Ign:5 http://<local_repo_IP>/ubuntu/dists/xenial main/restricted all Packages
Ign:6 http://<local_repo_IP>/ubuntu/dists/xenial main/restricted Translation-en_HK
Ign:7 http://<local_repo_IP>/ubuntu/dists/xenial main/restricted Translation-en
Ign:8 http://<local_repo_IP>/ubuntu/dists/xenial main/multiverse amd64 Packages
Ign:9 http://<local_repo_IP>/ubuntu/dists/xenial main/multiverse i386 Packages
Ign:10 http://<local_repo_IP>/ubuntu/dists/xenial main/multiverse all Packages
Ign:11 http://<local_repo_IP>/ubuntu/dists/xenial main/multiverse Translation-en_HK
Ign:12 http://<local_repo_IP>/ubuntu/dists/xenial main/multiverse Translation-en
Ign:13 http://<local_repo_IP>/ubuntu/dists/xenial main/universe amd64 Packages
Ign:14 http://<local_repo_IP>/ubuntu/dists/xenial main/universe i386 Packages
Ign:15 http://<local_repo_IP>/ubuntu/dists/xenial main/universe all Packages
Ign:16 http://<local_repo_IP>/ubuntu/dists/xenial main/universe Translation-en_HK
Ign:17 http://<local_repo_IP>/ubuntu/dists/xenial main/universe Translation-en
Ign:3 http://<local_repo_IP>/ubuntu/dists/xenial main/restricted amd64 Packages
Ign:4 http://<local_repo_IP>/ubuntu/dists/xenial main/restricted i386 Packages
Ign:5 http://<local_repo_IP>/ubuntu/dists/xenial main/restricted all Packages
Ign:6 http://<local_repo_IP>/ubuntu/dists/xenial main/restricted Translation-en_HK
Ign:7 http://<local_repo_IP>/ubuntu/dists/xenial main/restricted Translation-en
Ign:8 http://<local_repo_IP>/ubuntu/dists/xenial main/multiverse amd64 Packages
Ign:9 http://<local_repo_IP>/ubuntu/dists/xenial main/multiverse i386 Packages
Ign:10 http://<local_repo_IP>/ubuntu/dists/xenial main/multiverse all Packages
Ign:11 http://<local_repo_IP>/ubuntu/dists/xenial main/multiverse Translation-en_HK
Ign:12 http://<local_repo_IP>/ubuntu/dists/xenial main/multiverse Translation-en
Ign:13 http://<local_repo_IP>/ubuntu/dists/xenial main/universe amd64 Packages
Ign:14 http://<local_repo_IP>/ubuntu/dists/xenial main/universe i386 Packages
Ign:15 http://<local_repo_IP>/ubuntu/dists/xenial main/universe all Packages
Ign:16 http://<local_repo_IP>/ubuntu/dists/xenial main/universe Translation-en_HK
Ign:17 http://<local_repo_IP>/ubuntu/dists/xenial main/universe Translation-en
Ign:3 http://<local_repo_IP>/ubuntu/dists/xenial main/restricted amd64 Packages
Ign:4 http://<local_repo_IP>/ubuntu/dists/xenial main/restricted i386 Packages
Ign:5 http://<local_repo_IP>/ubuntu/dists/xenial main/restricted all Packages
Ign:6 http://<local_repo_IP>/ubuntu/dists/xenial main/restricted Translation-en_HK
Ign:7 http://<local_repo_IP>/ubuntu/dists/xenial main/restricted Translation-en
Ign:8 http://<local_repo_IP>/ubuntu/dists/xenial main/multiverse amd64 Packages
Ign:9 http://<local_repo_IP>/ubuntu/dists/xenial main/multiverse i386 Packages
Ign:10 http://<local_repo_IP>/ubuntu/dists/xenial main/multiverse all Packages
Ign:11 http://<local_repo_IP>/ubuntu/dists/xenial main/multiverse Translation-en_HK
Ign:12 http://<local_repo_IP>/ubuntu/dists/xenial main/multiverse Translation-en
Ign:13 http://<local_repo_IP>/ubuntu/dists/xenial main/universe amd64 Packages
Ign:14 http://<local_repo_IP>/ubuntu/dists/xenial main/universe i386 Packages
Ign:15 http://<local_repo_IP>/ubuntu/dists/xenial main/universe all Packages
Ign:16 http://<local_repo_IP>/ubuntu/dists/xenial main/universe Translation-en_HK
Ign:17 http://<local_repo_IP>/ubuntu/dists/xenial main/universe Translation-en
Ign:3 http://<local_repo_IP>/ubuntu/dists/xenial main/restricted amd64 Packages
Ign:4 http://<local_repo_IP>/ubuntu/dists/xenial main/restricted i386 Packages
Ign:5 http://<local_repo_IP>/ubuntu/dists/xenial main/restricted all Packages
Ign:6 http://<local_repo_IP>/ubuntu/dists/xenial main/restricted Translation-en_HK
Ign:7 http://<local_repo_IP>/ubuntu/dists/xenial main/restricted Translation-en
Ign:8 http://<local_repo_IP>/ubuntu/dists/xenial main/multiverse amd64 Packages
Ign:9 http://<local_repo_IP>/ubuntu/dists/xenial main/multiverse i386 Packages
Ign:10 http://<local_repo_IP>/ubuntu/dists/xenial main/multiverse all Packages
Ign:11 http://<local_repo_IP>/ubuntu/dists/xenial main/multiverse Translation-en_HK
Ign:12 http://<local_repo_IP>/ubuntu/dists/xenial main/multiverse Translation-en
Ign:13 http://<local_repo_IP>/ubuntu/dists/xenial main/universe amd64 Packages
Ign:14 http://<local_repo_IP>/ubuntu/dists/xenial main/universe i386 Packages
Ign:15 http://<local_repo_IP>/ubuntu/dists/xenial main/universe all Packages
Ign:16 http://<local_repo_IP>/ubuntu/dists/xenial main/universe Translation-en_HK
Ign:17 http://<local_repo_IP>/ubuntu/dists/xenial main/universe Translation-en
Ign:3 http://<local_repo_IP>/ubuntu/dists/xenial main/restricted amd64 Packages
Ign:4 http://<local_repo_IP>/ubuntu/dists/xenial main/restricted i386 Packages
Ign:5 http://<local_repo_IP>/ubuntu/dists/xenial main/restricted all Packages
Ign:6 http://<local_repo_IP>/ubuntu/dists/xenial main/restricted Translation-en_HK
Ign:7 http://<local_repo_IP>/ubuntu/dists/xenial main/restricted Translation-en
Ign:8 http://<local_repo_IP>/ubuntu/dists/xenial main/multiverse amd64 Packages
Ign:9 http://<local_repo_IP>/ubuntu/dists/xenial main/multiverse i386 Packages
Ign:10 http://<local_repo_IP>/ubuntu/dists/xenial main/multiverse all Packages
Ign:11 http://<local_repo_IP>/ubuntu/dists/xenial main/multiverse Translation-en_HK
Ign:12 http://<local_repo_IP>/ubuntu/dists/xenial main/multiverse Translation-en
Ign:13 http://<local_repo_IP>/ubuntu/dists/xenial main/universe amd64 Packages
Ign:14 http://<local_repo_IP>/ubuntu/dists/xenial main/universe i386 Packages
Ign:15 http://<local_repo_IP>/ubuntu/dists/xenial main/universe all Packages
Ign:16 http://<local_repo_IP>/ubuntu/dists/xenial main/universe Translation-en_HK
Ign:17 http://<local_repo_IP>/ubuntu/dists/xenial main/universe Translation-en
Err:3 http://<local_repo_IP>/ubuntu/dists/xenial main/restricted amd64 Packages
404 Not Found
Ign:4 http://<local_repo_IP>/ubuntu/dists/xenial main/restricted i386 Packages
Ign:5 http://<local_repo_IP>/ubuntu/dists/xenial main/restricted all Packages
Ign:6 http://<local_repo_IP>/ubuntu/dists/xenial main/restricted Translation-en_HK
Ign:7 http://<local_repo_IP>/ubuntu/dists/xenial main/restricted Translation-en
Ign:8 http://<local_repo_IP>/ubuntu/dists/xenial main/multiverse amd64 Packages
Ign:9 http://<local_repo_IP>/ubuntu/dists/xenial main/multiverse i386 Packages
Ign:10 http://<local_repo_IP>/ubuntu/dists/xenial main/multiverse all Packages
Ign:11 http://<local_repo_IP>/ubuntu/dists/xenial main/multiverse Translation-en_HK
Ign:12 http://<local_repo_IP>/ubuntu/dists/xenial main/multiverse Translation-en
Ign:13 http://<local_repo_IP>/ubuntu/dists/xenial main/universe amd64 Packages
Reading package lists... Done
W: The repository 'http://<local_repo_IP>/ubuntu/dists/xenial main Release' does not have a Release file.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
E: Failed to fetch http://<local_repo_IP>/ubuntu/dists/xenial/dists/main/restricted/binary-amd64/Packages 404 Not Found
E: Some index files failed to download. They have been ignored, or old ones used instead.
在目標機器上：
-
/etc/resolve.conf文件包含以下內容：\n
# Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8)\n# DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN\nnameserver 127.0.1.1\n -
/etc/network/interfaces包含以下內容：\n
# interfaces(5) file used by ifup(8) and ifdown(8)\nauto lo\niface lo inet loopback\n
此外，由於 apt-get update 的輸出中唯一明確表示錯誤的行是 Err:3 http://<local_repo_IP>/ubuntu/dists/xenial main/restricted amd64 Packages ，因此我通過在目標機器中執行以下操作來檢查文件是否存在
wget http://<local_repo_IP>/ubuntu/dists/xenial/restricted/binary-amd64/Packages
當我得到以下輸出時，我看到該文件在那裏：
--2017-12-21 17:23:24-- http://<local_repo_IP>/ubuntu/dists/xenial/restricted/binary-amd64/Packages
Connecting to <local_repo_IP>:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 127112 (124K)
Saving to: ‘Packages’
Packages 100%[============================>] 124.13K --.-KB/s in 0s
2017-12-21 17:23:24 (469 MB/s) - ‘Packages’ saved [127112/127112]
我還檢查了是否可以從目標機器成功 ping 到 repo 機器。這也行得通。
PING <local_repo_IP> (<local_repo_IP>) 56(84) bytes of data.
64 bytes from <local_repo_IP>: icmp_seq=1 ttl=64 time=0.169 ms
64 bytes from <local_repo_IP>: icmp_seq=2 ttl=64 time=0.671 ms
64 bytes from <local_repo_IP>: icmp_seq=3 ttl=64 time=0.186 ms
64 bytes from <local_repo_IP>: icmp_seq=4 ttl=64 time=0.190 ms
64 bytes from <local_repo_IP>: icmp_seq=5 ttl=64 time=0.315 ms
^C
--- <local_repo_IP> ping statistics ---
5 packets transmitted, 5 received, 0% packet loss, time 4047ms
rtt min/avg/max/mdev = 0.169/0.306/0.671/0.190 ms
那麽， apt-get update 有什麽問題？我怎樣才能修複它並讓它工作？
附言我剛剛注意到錯誤說 http://<local_repo_IP>/ubuntu/dists/xenial/dists/main/restricted/binary-amd64/Packages 。為什麽要在 main 中尋找 restricted 包？它不應該在 http://<local_repo_IP>/ubuntu/dists/xenial/restricted/binary-amd64/Packages 中尋找嗎？實際上，當我執行 wget http://<local_repo_IP>/ubuntu/dists/xenial/dists/main/restricted/binary-amd64/Packages 時，會出現以下錯誤：
--2017-12-21 17:26:06-- http://<local_repo_IP>/ubuntu/dists/xenial/dists/main/restricted/binary-amd64/Packages
Connecting to <local_repo_IP>:80... connected.
HTTP request sent, awaiting response... 404 Not Found
2017-12-21 17:26:06 ERROR 404: Not Found.
這裏發生了什麽？為什麽它試圖檢查一個不存在的目錄？以及如何使 apt-get update 指向正確的路徑？
最佳回答
我發現解決方案是編輯 etc/apt/sources.list 文件以僅包含係統架構的文件：
deb [arch=amd64] http://192.168.12.61/ubuntu/ xenial main restricted multiverse universe
現在，當我進行更新時，它沒有給出任何錯誤：
$ sudo apt update
Hit:1 http://192.168.12.61/ubuntu xenial InRelease
Reading package lists... Done
Building dependency tree
Reading state information... Done
All packages are up to date.
隻是想將其發布為可能遇到相同問題的任何人的可能解決方案。