크 랜 베 리 파이 3b ubuntu 18.04 server 설치 후 중국 소스 교체

오늘 은 크 랜 베 리 파 에 jdk 를 설치 하려 고 합 니 다. jdk 9 를 발견 한 후 32 비트 버 전이 없 는 것 같 습 니 다. 크 랜 베 리 파 의 공식 미 러 는 32 비트 이 고 크 랜 베 리 파 의 cpu 는 64 비트 이 며 64 비트 시스템 을 지원 하 는 것 같 습 니 다. 크 랜 베 리 파 의 ubuntu server 는 18.04 장기 지원 버 전 이 고 64 비트 인 것 을 발견 하여 정리 하 였 습 니 다.그리고 설치 한 후에 공식 소스 로 업데이트 하 는 것 이 너무 느 린 것 을 발 견 했 습 니 다. 청화대학 거울 창고 에 이 창고 가 있 는 것 을 발 견 했 습 니 다. 다음은 공식 소스 를 청화대학 의 소스 로 바 꾸 어 찾 았 습 니 다 /etc/apt/source.list. 다음 과 같이 수정 하면 됩 니 다.

## Note, this file is written by cloud-init on first boot of an instance
## modifications made here will not survive a re-bundle.
## if you wish to make changes you can:
## a.) add 'apt_preserve_sources_list: true' to /etc/cloud/cloud.cfg
##     or do the same in user-data
## b.) add sources in /etc/apt/sources.list.d
## c.) make changes to template file /etc/cloud/templates/sources.list.tmpl

# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
# newer versions of the distribution.
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports bionic main restricted
deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports bionic main restricted

## Major bug fix updates produced after the final release of the
## distribution.
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports bionic-updates main restricted
deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports bionic-updates main restricted

## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team. Also, please note that software in universe WILL NOT receive any
## review or updates from the Ubuntu security team.
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports bionic universe
deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports bionic universe
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports bionic-updates universe
deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports bionic-updates universe

## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu 
## team, and may not be under a free licence. Please satisfy yourself as to 
## your rights to use the software. Also, please note that software in 
## multiverse WILL NOT receive any review or updates from the Ubuntu
## security team.
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports bionic multiverse
deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports bionic multiverse
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports bionic-updates multiverse
deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports bionic-updates multiverse

## N.B. software from this repository may not have been tested as
## extensively as that contained in the main release, although it includes
## newer versions of some applications which may provide useful features.
## Also, please note that software in backports WILL NOT receive any review
## or updates from the Ubuntu security team.
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports bionic-backports main restricted universe multiverse
deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports bionic-backports main restricted universe multiverse

deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports bionic-security main restricted
deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports bionic-security main restricted
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports bionic-security universe
deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports bionic-security universe
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports bionic-security multiverse
deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports bionic-security multiverse

## Uncomment the following two lines to add software from Canonical's
## 'partner' repository.
## This software is not part of Ubuntu, but is offered by Canonical and the
## respective vendors as a service to Ubuntu users.
# deb http://archive.canonical.com/ubuntu bionic partner
# deb-src http://archive.canonical.com/ubuntu bionic partner

sudo apt-get update
sudo apt-get upgrade