debian8 最新安装及整理

安装中如果无法找到源，使用SOHU镜像源最好；

apt update中出现问题

使用rm -r /var/cache/apt /var/lib/apt/lists 删除再更新

加入源好安装shadowsocks-libev 

create /etc/apt/sources.list.d/jessie-backports.list

deb http://archive.debian.org/debian jessie-backports main

deb http://archive.debian.org/debian jessie-backports-sloppy main

apt-get update -o Acquire::Check-Valid-Until=false 

apt-get install shadowsocks-libev

the -o Acquire::Check-Valid-Until=false is the key information. Hope it is helpful.

将内核更新至4.9以上

apt-cache search linux-image

apt-get install -t jessie-backports linux-image-amd64
update-grub
apt-get autoclean
apt-get autoremove
reboot
dpkg -l|grep linux-image
apt-get purge

开启bbr

modprobe tcp_bbr
echo "tcp_bbr" >> /etc/modules-load.d/modules.conf
echo "net.core.default_qdisc=fq" >> /etc/sysctl.conf
echo "net.ipv4.tcp_congestion_control=bbr" >> /etc/sysctl.conf
执行这个保存生效更改。
sysctl -p
VPS提示：
net.core.default_qdisc = fq
net.ipv4.tcp_congestion_control = bbr
关闭bbr
sed -i '/net.core.default_qdisc=fq/d' /etc/sysctl.conf
sed -i '/net.ipv4.tcp_congestion_control=bbr/d' /etc/sysctl.conf
sysctl -p
执行完上面的代码，就使用reboot重启VPS后才能关闭bbr，重启后再用下面的查看bbr状态代码，查看是否关闭了。
reboot
执行下面命令，看到有 tcp_bbr 模块，即说明bbr已启动
lsmod | grep bbr

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安装php7.0

wget -O- https://www.dotdeb.org/dotdeb.gpg | apt-key add -

echo "deb http://packages.dotdeb.org jessie all" > /etc/apt/sources.list.d/dotdeb.list

apt-get update

apt-get install php7.0 php7.0-fpm php7.0-mysql php7.0-curl php7.0-json php7.0-gd php7.0-intl php7.0-mbstring php7.0-xml php7.0-zip php7.0-exif php7.0-apcu