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core: 完成 alpine 环境的静态ip/ipv6配置
This commit is contained in:
bin456789
parent
23a6a5c2cc
commit
e51774d4d8
93
alpine-network.sh
Normal file
93
alpine-network.sh
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@ -0,0 +1,93 @@
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#!/bin/ash
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# shellcheck shell=dash
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mac_addr=$1
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ipv4_addr=$2
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ipv4_gateway=$3
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ipv6_addr=$4
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ipv6_gateway=$5
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is_in_china=$6
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if $is_in_china; then
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ipv4_dns1='119.29.29.29'
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ipv4_dns2='223.5.5.5'
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ipv6_dns1='2402:4e00::'
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ipv6_dns2='2400:3200::1'
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else
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ipv4_dns1='1.1.1.1'
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ipv4_dns2='8.8.8.8'
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ipv6_dns1='2606:4700:4700::1111'
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ipv6_dns2='2001:4860:4860::8888'
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fi
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# 检测是否有 dhcpv4
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has_ipv4=false
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dhcpv4=false
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ip -4 addr show scope global | grep inet && dhcpv4=true && has_ipv4=true
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# 检测是否有 slaac
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has_ipv6=false
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slaac=false
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for i in $(seq 10 -1 0); do
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echo waiting slaac for ${i}s
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ip -6 addr show scope global | grep inet6 && slaac=true && has_ipv6=true && break
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sleep 1
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done
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# 设置静态地址
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# udhcpc不支持dhcpv6，所以如果网络是 dhcpv6，也先设置成静态
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ip link set dev eth0 up
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if ! $has_ipv4 && [ -n "$ipv4_addr" ]; then
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ip -4 addr add $ipv4_addr dev eth0
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ip -4 route add default via $ipv4_gateway
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has_ipv4=true
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fi
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if ! $has_ipv6 && [ -n "$ipv6_addr" ]; then
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ip -6 addr add $ipv6_addr dev eth0
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ip -6 route add default via $ipv6_gateway
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has_ipv6=true
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fi
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# 检查 ipv4/ipv6 是否连接联网
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ipv4_has_internet=false
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ipv6_has_internet=false
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for i in $(seq 10); do
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$has_ipv4 && ipv4_test_complete=false || ipv4_test_complete=true
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$has_ipv6 && ipv6_test_complete=false || ipv6_test_complete=true
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if ! $ipv4_test_complete && nslookup www.qq.com $ipv4_dns1; then
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ipv4_has_internet=true
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ipv4_test_complete=true
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fi
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if ! $ipv6_test_complete && nslookup www.qq.com $ipv6_dns1; then
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ipv6_has_internet=true
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ipv6_test_complete=true
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fi
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if $ipv4_test_complete && $ipv6_test_complete; then
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break
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fi
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sleep 1
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done
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# 等待 udhcpc 创建 /etc/resolv.conf
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if { $dhcpv4 || $slaac; } && [ ! -e /etc/resolv.conf ]; then
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sleep 3
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fi
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# 如果ipv4/ipv6不联网，则删除该协议的dns
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if $ipv4_has_internet && ! $ipv6_has_internet; then
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sed -i '/:/d' /etc/resolv.conf
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elif ! $ipv4_has_internet && $ipv6_has_internet; then
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sed -i '/\./d' /etc/resolv.conf
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fi
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# 如果联网了，但没获取到默认 DNS，则添加我们的 DNS
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if $ipv4_has_internet && ! grep '\.' /etc/resolv.conf; then
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echo "nameserver $ipv4_dns1" >>/etc/resolv.conf
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echo "nameserver $ipv4_dns2" >>/etc/resolv.conf
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fi
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if $ipv6_has_internet && ! grep ':' /etc/resolv.conf; then
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echo "nameserver $ipv6_dns1" >>/etc/resolv.conf
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echo "nameserver $ipv6_dns2" >>/etc/resolv.conf
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fi
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49
reinstall.sh
49
reinstall.sh
@ -596,6 +596,28 @@ is_efi() {
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fi
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}
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collect_netconf() {
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if is_in_windows; then
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# TODO:
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echo
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else
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# TODO: 多网卡 单网卡多IP
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nic_name=$(ip -o addr show scope global | head -1 | awk '{print $2}')
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mac_addr=$(ip addr show scope global | grep link/ether | head -1 | awk '{print $2}')
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ipv4_addr=$(ip -4 addr show scope global | grep inet | head -1 | awk '{print $2}')
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ipv6_addr=$(ip -6 addr show scope global | grep inet6 | head -1 | awk '{print $2}')
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ipv4_gateway=$(ip -4 route show default dev $nic_name | awk '{print $3}')
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ipv6_gateway=$(ip -6 route show default dev $nic_name | awk '{print $3}')
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echo 1 $mac_addr
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echo 2 $ipv4_addr
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echo 3 $ipv4_gateway
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echo 4 $ipv6_addr
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echo 5 $ipv6_gateway
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fi
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}
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install_grub_win() {
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grub_cfg=$1 # /cygdrive/$c/grub.cfg
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@ -897,6 +919,7 @@ mod_alpine_initrd() {
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# 预先下载脚本
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curl -Lo $tmp_dir/trans.start $confhome/trans.sh
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curl -Lo $tmp_dir/alpine-network.sh $confhome/alpine-network.sh
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# virt 内核添加 ipv6 模块
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if virt_dir=$(ls -d $tmp_dir/lib/modules/*-virt 2>/dev/null); then
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@ -916,23 +939,45 @@ mod_alpine_initrd() {
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fi
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fi
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# hack 运行 trans.start
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# hack 1 添加 ipv6 模块
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line_num=$(grep -E -n 'configure_ip\(\)' init | cut -d: -f1)
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cat <<EOF | sed -i "${line_num}r /dev/stdin" init
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depmod
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modprobe ipv6
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EOF
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# hack 2 udhcpc添加 -n 参数，中断静态ipv4时dhcp无限请求
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# shellcheck disable=SC2016
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sed -i '/$MOCK udhcpc/s/.*/& -n || true/' init
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# hack 3 网络配置
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collect_netconf
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line_num=$(grep -E -n 'MAC_ADDRESS=' init | cut -d: -f1)
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cat <<EOF | sed -i "${line_num}r /dev/stdin" init
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source /alpine-network.sh \
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"$mac_addr" "$ipv4_addr" "$ipv4_gateway" "$ipv6_addr" "$ipv6_gateway" \
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"$(is_in_china && echo true || echo false)"
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EOF
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# hack 4 运行 trans.start
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# exec /bin/busybox switch_root $switch_root_opts $sysroot $chart_init "$KOPT_init" $KOPT_init_args # 3.17
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# exec switch_root $switch_root_opts $sysroot $chart_init "$KOPT_init" $KOPT_init_args # 3.18
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line_num=$(grep -E -n '^exec (/bin/busybox )?switch_root' init | cut -d: -f1)
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line_num=$((line_num - 1))
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# 1. alpine arm initramfs 时间问题 要添加 --no-check-certificate
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# 2. 神奇的 aws t4g arm 会出现bad header错误， 但甲骨文arm就正常，所以只能预先下载
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# 2. aws t4g arm 如果没设置console=ttyx，在initramfs里面wget https会出现bad header错误，chroot后正常
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# Connecting to raw.githubusercontent.com (185.199.108.133:443)
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# 60C0BB2FFAFF0000:error:0A00009C:SSL routines:ssl3_get_record:http request:ssl/record/ssl3_record.c:345:
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# ssl_client: SSL_connect
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# wget: bad header line: <20>
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cat <<EOF | sed -i "${line_num}r /dev/stdin" init
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# echo "wget --no-check-certificate -O- $confhome/trans.sh | /bin/ash" >\$sysroot/etc/local.d/trans.start
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# wget --no-check-certificate -O \$sysroot/etc/local.d/trans.start $confhome/trans.sh
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cp /trans.start \$sysroot/etc/local.d/trans.start
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chmod a+x \$sysroot/etc/local.d/trans.start
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ln -s /etc/init.d/local \$sysroot/etc/runlevels/default/
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EOF
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# 重建
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# 注意要用 cpio -H newc 不要用 cpio -c ，不同版本的 -c 作用不一样，很坑
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# -c Use the old portable (ASCII) archive format
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73
trans.sh
73
trans.sh
@ -219,10 +219,69 @@ install_alpine() {
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rm -f /etc/local.d/trans.start
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rm -f /etc/runlevels/default/local
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# 添加 virt-what 用到的社区仓库
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add_community_repo
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# 保存默认应用列表
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if [ ! -e /tmp/world.orig ]; then
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cp /etc/apk/world /tmp/world.orig
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fi
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# 如果是 vm 就用 virt 内核
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apk add virt-what
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if [ -n "$(virt-what)" ]; then
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kernel_opt="-k virt"
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fi
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# 网络
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setup-interfaces -a # 生成 /etc/network/interfaces
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# 坑1 udhcpc下，ip -4 addr 无法知道是否是 dhcp
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# 坑2 udhcpc不支持dhcpv6
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# 坑3 安装 dhcpcd，会强制使用dhcpv6，即使ra m=0，解决方法是配置文件设置auto
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rc-update add networking boot
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# 生成 ipv4 配置
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if udhcpc -i eth0 -f -q -n; then
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# 生成dhcpv4配置
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setup-interfaces -a
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else
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# 如果当前有ipv4地址，则会生成静态配置
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# 如果当前没有ipv4地址，则会生成dhcpv4配置
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echo | setup-interfaces
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fi
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# 生成 ipv6 配置
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apk add ndisc6
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ra=$(rdisc6 eth0)
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echo "$ra" | cat -n
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echo "$ra" | grep 'Autonomous address conf' | grep Yes && is_slaac=true || is_slaac=false
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echo "$ra" | grep 'Stateful address conf' | grep Yes && is_dhcpv6=true || is_dhcpv6=false
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# 删除临时安装的软件，不然会带到新系统
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# shellcheck disable=SC2046
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apk del $(diff /tmp/world.orig /etc/apk/world | grep '^+' | sed '1d' | sed 's/^+//' | xargs)
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if $is_slaac; then
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echo 'iface eth0 inet6 auto' >>/etc/network/interfaces
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fi
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if $is_dhcpv6; then
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apk add dhcpcd
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echo 'iface eth0 inet6 dhcp' >>/etc/network/interfaces
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fi
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if ! $is_slaac && ! $is_dhcpv6; then
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ipv6_addr=$(ip -6 addr show scope global dev eth0 | grep inet6 | head -1 | awk '{print $2}')
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ipv6_gateway=$(ip -6 route show default dev eth0 | awk '{print $3}')
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if [ -n "$ipv6_addr" ]; then
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cat <<EOF >>/etc/network/interfaces
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iface eth0 inet6 static
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address $ipv6_addr
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gateway $ipv6_gateway
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EOF
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fi
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fi
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cat -n /etc/network/interfaces
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# 设置
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setup-keymap us us
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setup-timezone -i Asia/Shanghai
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@ -242,18 +301,6 @@ install_alpine() {
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# crond | default
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# seedrng | boot
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# 添加 virt-what 用到的社区仓库
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add_community_repo
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# 如果是 vm 就用 virt 内核
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cp /etc/apk/world /tmp/world.old
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apk add virt-what
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if [ -n "$(virt-what)" ]; then
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kernel_opt="-k virt"
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fi
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# 删除 virt-what 和依赖，不然会带到新系统
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apk del "$(diff /tmp/world.old /etc/apk/world | grep '^+' | sed '1d' | sed 's/^+//')"
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# 重置为官方仓库配置
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true >/etc/apk/repositories
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setup-apkrepos -1
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