de repente apt-get update começou a falhar, enquanto investigava me deparei com um comportamento estranho:
$ cat /etc/apt/sources.list
deb http://il.archive.ubuntu.com/ubuntu/ trusty main restricted
$ apt-get update
Ign http://il.archive.ubuntu.com trusty InRelease
Hit http://il.archive.ubuntu.com trusty Release.gpg
Hit http://il.archive.ubuntu.com trusty Release
Hit http://il.archive.ubuntu.com trusty/main amd64 Packages
Hit http://il.archive.ubuntu.com trusty/restricted amd64 Packages
Hit http://il.archive.ubuntu.com trusty/main Translation-en
Hit http://il.archive.ubuntu.com trusty/restricted Translation-en
Ign http://il.archive.ubuntu.com trusty/main Translation-en_US
Ign http://il.archive.ubuntu.com trusty/restricted Translation-en_US
Reading package lists... Done
$ sed -i 's/il/us/g' /etc/apt/sources.list
$ cat /etc/apt/sources.list
deb http://us.archive.ubuntu.com/ubuntu/ trusty main restricted
$ apt-get update
Ign http://us.archive.ubuntu.com trusty InRelease
Get:1 http://us.archive.ubuntu.com trusty Release.gpg [72 B]
Get:2 http://us.archive.ubuntu.com trusty Release [11.9 kB]
Get:3 http://us.archive.ubuntu.com trusty/main amd64 Packages [14 B]
Fetched 12.0 kB in 0s (20.6 kB/s)
W: Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/trusty/Release Unable to find expected entry 'restricted/binary-amd64/Packages' in Release file (Wrong sources.list entry or malformed file)
E: Some index files failed to download. They have been ignored, or old ones used instead.
eu pensei que o prefixo ( il ou us ) apenas indica qual cdn do repositório oficial do ubuntu usar. pode haver uma diferença entre os repositórios oficiais do ubuntu apt?
ATUALIZAÇÃO:
eu fui para o gerador de lista de fontes do ubuntu para regenerar a lista de fontes do ubuntu (sem 'restrito'), a fim de verificar se o URLs estão corretos - como mostrado abaixo, a única coisa que difere é o sufixo regional, que corresponde ao snippet acima.
$ curl -s https://repogen.simplylinux.ch/txt/sources_abed64b7b6ab23d5c4ffe668bbe70d3c37144a3a.txt | grep ^deb && curl -s https://repogen.simplylinux.ch/txt/sources_99dc7e2a260ff96dbe49910f005d2ab82862458e.txt | grep ^deb
deb http://il.archive.ubuntu.com/ubuntu/ trusty main
deb http://us.archive.ubuntu.com/ubuntu/ trusty main
UPDATE 2:
é reproduzível para mim. quem deve ser informado?
UPDATE 3:
aqui estão mais alguns detalhes:
$ dpkg --print-architecture
amd64
$ wget -q -O- http://us.archive.ubuntu.com/ubuntu/dists/trusty/Release | grep 'restricted/binary-amd64/Packages'
$ echo $?
1
$ dig us.archive.ubuntu.com | grep IN
;us.archive.ubuntu.com. IN A
us.archive.ubuntu.com. 57 IN A 91.189.91.15
us.archive.ubuntu.com. 57 IN A 91.189.91.24
us.archive.ubuntu.com. 57 IN A 91.189.91.23
us.archive.ubuntu.com. 57 IN A 91.189.91.13
us.archive.ubuntu.com. 57 IN A 91.189.91.14
link resolveu meu problema. incluído um pequeno trecho da resposta original:
% bl0ck_qu0te%deb mirror://mirrors.ubuntu.com/mirrors.txt trusty main restricted universe multiverse
deb mirror://mirrors.ubuntu.com/mirrors.txt trusty-updates main restricted universe multiverse
deb mirror://mirrors.ubuntu.com/mirrors.txt trusty-backports main restricted universe multiverse
deb mirror://mirrors.ubuntu.com/mirrors.txt trusty-security main restricted universe multiverse