Olia Lisa
71 lines
2.1 KiB
Bash
71 lines
2.1 KiB
Bash
enable_kernel_bbr(){
|
|
if [ "$(id -u)" -ne 0 ]; then
|
|
echo "请使用 root 权限运行该操作"
|
|
return 1
|
|
fi
|
|
|
|
# 检测容器环境
|
|
local virt_type=""
|
|
if command -v systemd-detect-virt >/dev/null 2>&1; then
|
|
virt_type=$(systemd-detect-virt 2>/dev/null)
|
|
fi
|
|
|
|
case "$virt_type" in
|
|
lxc|openvz|docker|podman|container-other)
|
|
echo "检测到当前运行于容器环境: $virt_type"
|
|
echo "请在宿主机开启 BBR"
|
|
return 1
|
|
;;
|
|
esac
|
|
|
|
if [ "$(sysctl -n net.ipv4.tcp_congestion_control 2>/dev/null)" = "bbr" ]; then
|
|
echo "BBR加速 已经开启，无需重复操作"
|
|
return 0
|
|
fi
|
|
|
|
# 尝试加载 bbr 模块（新内核可能已内建）
|
|
if command -v modprobe >/dev/null 2>&1; then
|
|
modprobe tcp_bbr 2>/dev/null || true
|
|
fi
|
|
|
|
# 检查内核是否支持 BBR
|
|
if ! sysctl net.ipv4.tcp_available_congestion_control 2>/dev/null | grep -qw bbr; then
|
|
echo "当前系统内核不支持 BBR"
|
|
return 1
|
|
fi
|
|
|
|
set_sysctl_conf(){
|
|
local key="$1"
|
|
local value="$2"
|
|
local file="/etc/sysctl.conf"
|
|
|
|
touch "$file"
|
|
|
|
# 转义 key，避免 . 被 grep/sed 当作正则
|
|
local escaped_key
|
|
escaped_key=$(printf '%s\n' "$key" | sed 's/[.[\*^$()+?{|]/\\&/g')
|
|
|
|
if grep -qE "^[[:space:]]*#?[[:space:]]*$escaped_key[[:space:]]*=" "$file"; then
|
|
sed -i "s|^[[:space:]]*#\?[[:space:]]*$escaped_key[[:space:]]*=.*|$key = $value|" "$file"
|
|
else
|
|
echo "$key = $value" >> "$file"
|
|
fi
|
|
}
|
|
|
|
# 写入配置
|
|
set_sysctl_conf "net.core.default_qdisc" "fq"
|
|
set_sysctl_conf "net.ipv4.tcp_congestion_control" "bbr"
|
|
|
|
# 立即生效
|
|
sysctl -w net.core.default_qdisc=fq >/dev/null 2>&1
|
|
sysctl -w net.ipv4.tcp_congestion_control=bbr >/dev/null 2>&1
|
|
|
|
# 验证是否成功
|
|
if [ "$(sysctl -n net.ipv4.tcp_congestion_control 2>/dev/null)" = "bbr" ]; then
|
|
echo "BBR加速 已开启"
|
|
else
|
|
echo "BBR开启失败"
|
|
return 1
|
|
fi
|
|
}
|