debian11系统初始化

更改apt源

根据自己的实际情况进行修改，腾讯/阿里云/华为云/中科大/清华源都可以

vi /etc/apt/sources.list ，清除原来的内容，写入下面内容

deb https://mirrors.cloud.tencent.com/debian/ bullseye main non-free contrib
deb-src https://mirrors.cloud.tencent.com/debian/ bullseye main non-free contrib
deb https://mirrors.cloud.tencent.com/debian/ bullseye-updates main non-free contrib
deb-src https://mirrors.cloud.tencent.com/debian/ bullseye-updates main non-free contrib
deb https://mirrors.cloud.tencent.com/debian/ bullseye-backports main non-free contrib
deb-src https://mirrors.cloud.tencent.com/debian/ bullseye-backports main non-free contrib
deb https://mirrors.cloud.tencent.com/debian-security bullseye-security/updates main non-free contrib
deb-src https://mirrors.cloud.tencent.com/debian-security bullseye-security/updates main non-free contrib

安装基础包

apt install vim curl wget tar unzip zip htop lsof iotop iftop nload net-tools telnet chrony sudo resolvconf -y

配置时间同步

cat > /etc/chrony/sources.d/public-ntp-server.sources  <<EOF
server ntp.tencent.com iburst
server ntp.aliyun.com   iburst
EOF
systemctl restart chrony && systemctl enable chrony

调整vim

• 启用鼠标复制粘贴

cat > /etc/vim/vimrc.local <<EOF
source \$VIMRUNTIME/defaults.vim
let skip_defaults_vim = 1
if has('mouse')
    set mouse=r
endif
EOF

• 修改vim编辑方式, vim /etc/vim/vimrc.tiny

set nocompatible
set backspace=2

• 关闭vim编辑自动缩进，vim /usr/share/vim/vim82/defaults.vim, 使用"注释如下行

" filetype plugin indent on

调整内核参数和limit参数

cat > /etc/sysctl.conf <<EOF
net.core.netdev_max_backlog = 32768
net.core.rmem_default = 8388608
net.core.somaxconn = 32768
net.core.wmem_default = 8388608
net.ipv6.conf.all.disable_ipv6=1
net.ipv6.conf.default.disable_ipv6=1
net.ipv6.conf.lo.disable_ipv6=1
net.ipv4.ip_forward = 1
net.ipv4.conf.all.arp_ignore = 0
net.ipv4.conf.lo.arp_announce = 0
net.ipv4.conf.lo.arp_ignore = 0
net.ipv4.ip_local_port_range = 5000 65000
net.ipv4.tcp_fin_timeout = 30
net.ipv4.tcp_keepalive_intvl = 30
net.ipv4.tcp_keepalive_probes = 3
net.ipv4.tcp_keepalive_time = 300
net.ipv4.tcp_max_orphans = 3276800
net.ipv4.tcp_max_syn_backlog = 65536
net.ipv4.tcp_max_tw_buckets = 5000
net.ipv4.tcp_mem = 94500000 915000000 927000000
net.ipv4.tcp_syn_retries = 2
net.ipv4.tcp_synack_retries = 2
net.ipv4.tcp_syncookies = 1
net.ipv4.tcp_timestamps = 0
net.ipv4.tcp_tw_reuse = 1
net.ipv4.conf.all.send_redirects = 0
net.ipv4.conf.default.send_redirects = 0
net.ipv4.conf.all.secure_redirects = 0
net.ipv4.conf.default.secure_redirects = 0
net.ipv4.conf.all.accept_redirects = 0
net.ipv4.conf.default.accept_redirects = 0
net.ipv4.neigh.default.gc_thresh1 = 2048
net.ipv4.neigh.default.gc_thresh2 = 4096
net.ipv4.neigh.default.gc_thresh3 = 8192
net.core.wmem_max = 327679
net.core.rmem_max = 327679
fs.file-max = 1000000
fs.inotify.max_queued_events = 327679
fs.inotify.max_user_watches = 10000000
kernel.unknown_nmi_panic = 0
kernel.shmmax = 68719476736
kernel.shmall = 4294967296
kernel.msgmnb = 65536
kernel.msgmax = 65536
kernel.sysrq = 1
vm.swappiness = 10
vm.max_map_count = 655360
vm.overcommit_memory = 1

EOF

调整limit参数

cat >> /etc/security/limits.conf <<EOF
*          hard    core      0
*          soft    nproc     65535
*          hard    nproc     65535
*          soft    nofile    65535
*          hard    nofile    65535
root       soft    nproc     unlimited
EOF

修改网卡序号

修改网卡序号为 eth0

vim /etc/default/grub 修改GRUB_CMDLINE_LINUX，

GRUB_CMDLINE_LINUX="net.ifnames=0 biosdevname=0"

更新grub

update-grub

vim /etc/network/interfaces 修改文件内容中的网卡名称，全部改为eth0