471 lines
20 KiB
Bash
471 lines
20 KiB
Bash
#!/bin/bash
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#
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# chicken.sh —— ARM 主机 Incus 容器批量分发管理脚本
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#
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# 适用场景: Oracle Cloud ARM (Ampere A1) + Incus 容器 + 单公网IP按端口区分多台"小鸡"
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#
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# 用法:
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# sudo ./chicken.sh init 初始化环境:装 Incus、自动初始化、放开本机防火墙(只需跑一次)
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# sudo ./chicken.sh create [N] [CPU%] [MEM] [DISK]
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# 批量创建 N 台(默认1台),自动分配端口段、装ssh、随机密码
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# CPU%/MEM/DISK 可选,不填则用脚本顶部默认值
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# CPU% 是时间片百分比(如 5%),不是核数,可以设得很小
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# 示例: sudo ./chicken.sh create 50 5% 128MiB 512MiB
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# sudo ./chicken.sh list 查看所有小鸡及其端口/密码/资源限制
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# sudo ./chicken.sh resize <名称> [CPU%] [MEM] [DISK]
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# 调整已存在小鸡的资源限制(留空的项不改)
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# sudo ./chicken.sh delete <名称> 删除指定小鸡(同时清理端口转发规则)
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# sudo ./chicken.sh check <名称> 自检:从本机直接测试该小鸡的SSH端口是否真的能连通
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#
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# 重要前提(脚本不会帮你做,必须手动去甲骨文控制台操作一次):
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# VCN -> Security Lists / NSG -> Ingress Rules -> 添加规则:
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# Source CIDR: 0.0.0.0/0
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# IP Protocol: All Protocols
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# 不放行这条,本机端口再怎么开都连不进来,是两道独立的墙。
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# (跑 init 时脚本会打印出本机公网IP,方便你去控制台核对)
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#
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# ---------------------------------------------------------------------------
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# 关于端口转发方式(重要变更说明):
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# 旧版每个端口用 incus proxy device 走用户态转发(forkproxy 进程),
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# 每台小鸡 20 端口(tcp+udp)= 40 个常驻进程,台数一多内存/句柄容易爆炸。
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#
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# 本版改为 proxy device 加 nat=true,由内核态 iptables/nftables 直接做
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# DNAT 转发,不再为每个端口 fork 进程,几乎零额外常驻内存开销。
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# 代价:nat=true 模式下宿主机不会真的 listen 该端口(是DNAT不是accept),
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# 所以 check 命令改用查 iptables NAT 规则 + 实际连接测试来验证,而不是 ss -tln。
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# ---------------------------------------------------------------------------
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set -e
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# ================= 可调参数 =================
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PORTS_PER=20 # 每台小鸡分配的端口数量
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POOL_START=21000 # 端口池起始端口(建议避开20000-20099等常见默认端口)
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IMAGE="images:alpine/edge" # 容器镜像(Alpine,体积小,适合高密度切鸡;edge=始终指向当前可用最新版,不会像固定版本号那样过期下架)
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STATE_FILE="/root/chicken_port_pool.state" # 端口池分配进度记录
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LOG_FILE="/root/chicken_accounts.txt" # 账号信息记录(名称/IP/SSH端口/端口段/密码/CPU/内存/磁盘)
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NAME_PREFIX="ck" # 小鸡命名前缀,如 ck1 ck2 ck3
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# ---- 资源限制默认值(可在此改,或 create 时用参数临时覆盖) ----
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DEFAULT_CPU="5%" # CPU 时间片百分比,对应 incus limits.cpu.allowance,如 5% / 10% / 50%
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# 用百分比而不是整数核,高密度切鸡时才能切得细,不受"最少1核"限制
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DEFAULT_MEM="128MiB" # 内存,对应 incus limits.memory,如 128MiB / 256MiB / 1GiB
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DEFAULT_DISK="512MiB" # 根盘大小,对应 root 设备的 size,如 512MiB / 1GiB / 10GiB
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# 注意: 磁盘限额是否生效取决于存储池驱动(zfs/btrfs 支持配额;
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# dir 驱动不支持,只会记录不会真正限制,脚本会给出提示)
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# ================= 通用检查 =================
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require_root() {
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if [ "$(id -u)" -ne 0 ]; then
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echo "请用 sudo 运行本脚本"
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exit 1
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fi
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}
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# 检测当前 Incus 存储池驱动是否支持磁盘配额(zfs/btrfs 支持, dir/lvm-thin 等可能不支持或行为不同)
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check_disk_quota_support() {
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local pool driver
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pool=$(incus profile device get default root pool 2>/dev/null || echo "")
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if [ -z "$pool" ]; then
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return
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fi
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driver=$(incus storage show "$pool" 2>/dev/null | awk -F': ' '/^driver:/ {print $2}')
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case "$driver" in
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zfs|btrfs)
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;;
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*)
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echo "!! 提示: 当前存储池驱动是 [$driver],该驱动可能不支持真正的磁盘配额限制。"
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echo " size= 设置会被记录,但不一定能强制生效,磁盘用量请配合 df -h 自行监控。"
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echo " 如需强制磁盘配额,建议存储池换成 zfs 或 btrfs (需在 incus admin init 时选择)。"
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;;
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esac
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}
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# ================= 子命令: init =================
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cmd_init() {
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echo "===== 1. 安装基础依赖 ====="
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export DEBIAN_FRONTEND=noninteractive
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apt update -qq
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apt install -y -qq curl iptables iptables-persistent >/dev/null
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echo "===== 2. 安装 Incus ====="
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if ! command -v incus &>/dev/null; then
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# 先试系统自带源(较新的 Ubuntu/Debian 有 incus 包)
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if apt-cache show incus &>/dev/null; then
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apt install -y -qq incus incus-client
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else
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echo "系统自带源没有 incus 包,改用官方 Zabbly 源安装..."
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apt install -y -qq gpg
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mkdir -p /etc/apt/keyrings
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curl -fsSL https://pkgs.zabbly.com/key.asc -o /etc/apt/keyrings/zabbly.asc
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cat <<EOF > /etc/apt/sources.list.d/zabbly-incus-stable.sources
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Enabled: yes
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Types: deb
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URIs: https://pkgs.zabbly.com/incus/stable
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Suites: $(. /etc/os-release && echo "${VERSION_CODENAME}")
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Components: main
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Architectures: $(dpkg --print-architecture)
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Signed-By: /etc/apt/keyrings/zabbly.asc
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EOF
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apt update -qq
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apt install -y -qq incus incus-client
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fi
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else
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echo "Incus 已安装,跳过"
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fi
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echo "===== 3. 初始化 Incus(全自动默认配置) ====="
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# 只判断服务是否能连上不够(装了包但没跑过admin init时incus info也能连上),
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# 改为检查是否已存在存储池,这才是"真正初始化过"的标志。
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if ! incus storage list --format csv 2>/dev/null | grep -q .; then
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incus admin init --auto
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echo "已用默认配置自动初始化(本地存储 + 网桥NAT网络)。"
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echo "如果你需要自定义存储池/网络(比如想用 zfs 以支持磁盘配额),请先执行: incus admin init 手动配置,再重跑本脚本。"
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else
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echo "Incus 已初始化,跳过"
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fi
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echo "===== 4. 放开本机 iptables(全部放行,防火墙统一交给OCI控制台管) ====="
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iptables -P INPUT ACCEPT
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iptables -P FORWARD ACCEPT
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iptables -P OUTPUT ACCEPT
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iptables -F
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iptables -X
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netfilter-persistent save
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echo ""
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echo "===== 环境初始化完成 ====="
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PUB_IP=$(curl -s -4 --max-time 5 ifconfig.me || echo "获取失败,可手动执行: curl ifconfig.me")
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echo "本机公网IP: ${PUB_IP}"
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echo "!! 别忘了去 OCI 控制台放行 Security List: Source 0.0.0.0/0, Protocol All Protocols"
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echo "!! 否则本机端口开了也没用,外部连不进来"
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check_disk_quota_support
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}
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# ================= 子命令: create =================
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cmd_create() {
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local COUNT=${1:-1}
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local CPU=${2:-$DEFAULT_CPU} # 百分比,如 5%
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local MEM=${3:-$DEFAULT_MEM}
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local DISK=${4:-$DEFAULT_DISK}
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# 兼容:如果用户传了纯数字(比如 "2"),自动补上 % 号,避免手滑忘记加%
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case "$CPU" in
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*%) ;;
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*) CPU="${CPU}%" ;;
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esac
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[ -f "$STATE_FILE" ] || echo "$POOL_START" > "$STATE_FILE"
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[ -f "$LOG_FILE" ] || echo -e "名称\tIP\tSSH端口\t端口段\t密码\tCPU\t内存\t磁盘" > "$LOG_FILE"
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check_disk_quota_support
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# nat=true 模式下 proxy device 不允许监听通配地址 0.0.0.0,必须绑定宿主机网卡的具体IP。
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# OCI等云主机的"公网IP"通常是网关层1:1 NAT到私网IP,系统自己只看得到私网IP,
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# 绑定这个私网IP即可,通过公网IP访问时网关会自动转进来。
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HOST_IP=$(ip -4 route get 1.1.1.1 2>/dev/null | awk '{for(i=1;i<=NF;i++) if($i=="src") print $(i+1)}')
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if [ -z "$HOST_IP" ]; then
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HOST_IP=$(hostname -I 2>/dev/null | awk '{print $1}')
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fi
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if [ -z "$HOST_IP" ]; then
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echo "!! 无法自动探测宿主机网卡IP,请手动检查网络配置后重试"
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exit 1
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fi
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echo "宿主机绑定IP(用于端口转发监听): ${HOST_IP}"
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get_next_index() {
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local i=1
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while incus info "${NAME_PREFIX}${i}" &>/dev/null; do
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i=$((i+1))
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done
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echo $i
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}
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# 端口段是否与本机已在监听的端口冲突(比如80/443/其他服务),冲突则跳过整段往后找
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# 注意: nat=true 模式下,已分配给其他小鸡的端口不会出现在 ss -tln 里(是DNAT不是listen),
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# 所以这里只能防真实占用(比如宿主机自己跑的服务),防不了"跟其他小鸡端口段重叠"。
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# 重叠问题由 STATE_FILE 递增分配来保证,不依赖 ss 检测。
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find_free_port_start() {
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local candidate=$1
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while true; do
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local conflict=0
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for p in $(seq "$candidate" $((candidate + PORTS_PER - 1))); do
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if ss -tln 2>/dev/null | awk '{print $4}' | grep -q ":${p}\$"; then
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conflict=1
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break
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fi
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done
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if [ "$conflict" -eq 0 ]; then
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echo "$candidate"
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return
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fi
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candidate=$((candidate + PORTS_PER))
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done
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}
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echo "开始批量创建 $COUNT 台 (每台限制: CPU=${CPU} 内存=${MEM} 磁盘=${DISK})..."
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for n in $(seq 1 "$COUNT"); do
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IDX=$(get_next_index)
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NAME="${NAME_PREFIX}${IDX}"
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NEXT_PORT=$(cat "$STATE_FILE")
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PORT_START=$(find_free_port_start "$NEXT_PORT")
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PORT_END=$((PORT_START + PORTS_PER - 1))
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echo $((PORT_END + 1)) > "$STATE_FILE"
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echo "===== 创建 $NAME (端口段: ${PORT_START}-${PORT_END}, CPU=${CPU} 内存=${MEM} 磁盘=${DISK}) ====="
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# 创建时直接带上资源限制:
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# -c limits.cpu.allowance= CPU 时间片百分比(不是核数,可以设很小,如 5%)
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# -c limits.memory= 内存上限
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# -d root,size= 根盘大小限制(需存储池驱动支持配额才会真正强制)
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incus launch "$IMAGE" "$NAME" \
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-c limits.cpu.allowance="${CPU}" \
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-c limits.memory="${MEM}" \
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-d root,size="${DISK}"
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IP=""
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for i in $(seq 1 15); do
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IP=$(incus list "$NAME" -c 4 --format csv | cut -d' ' -f1)
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[ -n "$IP" ] && break
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sleep 2
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done
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if [ -z "$IP" ]; then
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echo "!! $NAME 没拿到IP,跳过,请手动检查(incus exec $NAME -- ip a)"
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continue
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fi
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sleep 3
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# nat=true 模式要求 proxy device 的 connect IP 必须是容器"静态声明"的地址,
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# 单纯DHCP动态分配的IP即使数值一样也会被拒绝(报错 must be one of the instance's
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# static IPv4 addresses)。这里找到容器的网卡设备名,把当前拿到的IP显式声明为静态。
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NIC_DEVICE=""
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for d in $(incus config device list "$NAME" 2>/dev/null); do
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t=$(incus config device get "$NAME" "$d" type 2>/dev/null || echo "")
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if [ "$t" = "nic" ]; then
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NIC_DEVICE="$d"
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break
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fi
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done
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if [ -z "$NIC_DEVICE" ]; then
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echo "!! $NAME 找不到网卡设备名,跳过端口转发,请手动检查: incus config device list $NAME"
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continue
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fi
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incus config device override "$NAME" "$NIC_DEVICE" ipv4.address="${IP}" >/dev/null
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# Alpine 用 apk 装包、ash 跑脚本、OpenRC 管服务,和 Debian 版(apt/bash/systemd)不一样
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incus exec "$NAME" -- sh -c "apk update -q && apk add -q openssh"
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incus exec "$NAME" -- sh -c "sed -i 's/^#\?PermitRootLogin.*/PermitRootLogin yes/' /etc/ssh/sshd_config"
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incus exec "$NAME" -- sh -c "sed -i 's/^#\?PasswordAuthentication.*/PasswordAuthentication yes/' /etc/ssh/sshd_config"
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PASSWORD=$(tr -dc 'A-Za-z0-9' </dev/urandom | head -c 16)
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incus exec "$NAME" -- sh -c "echo 'root:${PASSWORD}' | chpasswd"
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incus exec "$NAME" -- sh -c "rc-update add sshd default && (rc-service sshd restart || rc-service sshd start)"
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# ---- 端口转发: 全部走 nat=true 内核态转发,不再 fork 用户态进程 ----
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# 注意 connect 目标必须是容器的真实IP(不能用127.0.0.1),因为是内核DNAT。
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SSH_PORT=$PORT_START
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incus config device add "$NAME" sshport proxy \
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listen=tcp:${HOST_IP}:${SSH_PORT} \
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connect=tcp:${IP}:22 \
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nat=true >/dev/null
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for p in $(seq $((PORT_START+1)) $PORT_END); do
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incus config device add "$NAME" "tcp-$p" proxy \
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listen=tcp:${HOST_IP}:${p} \
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connect=tcp:${IP}:${p} \
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nat=true >/dev/null
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incus config device add "$NAME" "udp-$p" proxy \
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listen=udp:${HOST_IP}:${p} \
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connect=udp:${IP}:${p} \
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nat=true >/dev/null
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done
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echo -e "${NAME}\t${IP}\t${SSH_PORT}\t${PORT_START}-${PORT_END}\t${PASSWORD}\t${CPU}\t${MEM}\t${DISK}" >> "$LOG_FILE"
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echo "$NAME 完成: SSH端口=${SSH_PORT} 密码=${PASSWORD} CPU=${CPU} 内存=${MEM} 磁盘=${DISK}"
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done
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echo ""
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echo "全部完成,汇总如下:"
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column -t -s $'\t' "$LOG_FILE"
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}
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# ================= 子命令: resize =================
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# 调整已存在小鸡的资源限制。留空的参数表示不改该项。
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# 用法: sudo ./chicken.sh resize ck1 10% 256MiB 1GiB
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cmd_resize() {
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local NAME="$1"
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local CPU="$2" # 百分比,如 10%
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local MEM="$3"
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local DISK="$4"
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if [ -z "$NAME" ]; then
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echo "用法: sudo ./chicken.sh resize <名称> [CPU%] [MEM] [DISK]"
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echo " 留空的项不修改,例如只改内存: sudo ./chicken.sh resize ck1 '' 256MiB"
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exit 1
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fi
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if ! incus info "$NAME" &>/dev/null; then
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echo "容器 $NAME 不存在"
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exit 1
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fi
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if [ -n "$CPU" ]; then
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case "$CPU" in
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*%) ;;
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*) CPU="${CPU}%" ;;
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esac
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incus config set "$NAME" limits.cpu.allowance "$CPU"
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echo "$NAME CPU 限制已改为 ${CPU}"
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fi
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if [ -n "$MEM" ]; then
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incus config set "$NAME" limits.memory "$MEM"
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echo "$NAME 内存限制已改为 ${MEM}"
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fi
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if [ -n "$DISK" ]; then
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check_disk_quota_support
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incus config device override "$NAME" root size="$DISK" 2>/dev/null \
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|| incus config device set "$NAME" root size="$DISK"
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echo "$NAME 磁盘限制已改为 ${DISK} (容器需重启后部分场景才完全生效)"
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fi
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# 同步更新 LOG_FILE 里的记录(如果存在这一行)
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if [ -f "$LOG_FILE" ] && grep -q "^${NAME} " "$LOG_FILE"; then
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local CUR_CPU CUR_MEM CUR_DISK
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CUR_CPU=$(incus config get "$NAME" limits.cpu.allowance 2>/dev/null || echo "-")
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CUR_MEM=$(incus config get "$NAME" limits.memory 2>/dev/null || echo "-")
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CUR_DISK=$(incus config device get "$NAME" root size 2>/dev/null || echo "-")
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awk -F'\t' -v name="$NAME" -v c="$CUR_CPU" -v m="$CUR_MEM" -v d="$CUR_DISK" \
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'BEGIN{OFS="\t"} $1==name {$6=c;$7=m;$8=d} {print}' "$LOG_FILE" > "${LOG_FILE}.tmp" \
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&& mv "${LOG_FILE}.tmp" "$LOG_FILE"
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fi
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}
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# ================= 子命令: list =================
|
|
cmd_list() {
|
|
echo "===== Incus 容器状态(含CPU/内存实时用量) ====="
|
|
incus list -c ns4tM
|
|
echo ""
|
|
if [ -f "$LOG_FILE" ]; then
|
|
echo "===== 账号信息与资源限制 ====="
|
|
column -t -s $'\t' "$LOG_FILE"
|
|
else
|
|
echo "暂无账号记录($LOG_FILE 不存在)"
|
|
fi
|
|
}
|
|
|
|
# ================= 子命令: delete =================
|
|
cmd_delete() {
|
|
local NAME="$1"
|
|
if [ -z "$NAME" ]; then
|
|
echo "用法: sudo ./chicken.sh delete <名称>"
|
|
exit 1
|
|
fi
|
|
|
|
if ! incus info "$NAME" &>/dev/null; then
|
|
echo "容器 $NAME 不存在"
|
|
exit 1
|
|
fi
|
|
|
|
echo "删除容器 $NAME(会自动清理其端口转发规则,包括nat=true下发的iptables规则)..."
|
|
incus delete "$NAME" --force
|
|
|
|
if [ -f "$LOG_FILE" ]; then
|
|
grep -vP "^${NAME}\t" "$LOG_FILE" > "${LOG_FILE}.tmp" && mv "${LOG_FILE}.tmp" "$LOG_FILE"
|
|
fi
|
|
|
|
echo "$NAME 已删除。注意:它占用的端口段不会自动回收复用,新建的小鸡会继续往后分配,避免冲突。"
|
|
}
|
|
|
|
# ================= 子命令: check =================
|
|
cmd_check() {
|
|
local NAME="$1"
|
|
if [ -z "$NAME" ]; then
|
|
echo "用法: sudo ./chicken.sh check <名称>"
|
|
exit 1
|
|
fi
|
|
|
|
if [ ! -f "$LOG_FILE" ]; then
|
|
echo "找不到账号记录文件 $LOG_FILE"
|
|
exit 1
|
|
fi
|
|
|
|
local ROW
|
|
ROW=$(grep -P "^${NAME}\t" "$LOG_FILE" || true)
|
|
if [ -z "$ROW" ]; then
|
|
echo "在 $LOG_FILE 中找不到 $NAME 的记录"
|
|
exit 1
|
|
fi
|
|
|
|
local SSH_PORT PASSWORD
|
|
SSH_PORT=$(echo "$ROW" | cut -f3)
|
|
PASSWORD=$(echo "$ROW" | cut -f5)
|
|
|
|
echo "===== 自检 $NAME (本机SSH端口 ${SSH_PORT}) ====="
|
|
echo "1) NAT转发规则是否已下发(nat=true模式下宿主机不会listen该端口,查iptables NAT表):"
|
|
if iptables -t nat -L PREROUTING -n 2>/dev/null | grep -q "dpt:${SSH_PORT}[^0-9]"; then
|
|
echo " OK - 找到 ${SSH_PORT} 的DNAT规则"
|
|
else
|
|
echo " !! 没找到 ${SSH_PORT} 的DNAT规则,proxy device 可能没生效,检查: incus config device list ${NAME}"
|
|
return
|
|
fi
|
|
|
|
echo "2) 用密码尝试SSH登录(通过 127.0.0.1,验证转发链路本身是否通):"
|
|
if ! command -v sshpass &>/dev/null; then
|
|
apt install -y -qq sshpass >/dev/null
|
|
fi
|
|
|
|
if sshpass -p "$PASSWORD" ssh -o StrictHostKeyChecking=no -o ConnectTimeout=5 \
|
|
root@127.0.0.1 -p "$SSH_PORT" 'echo 本机内部连接成功' 2>/dev/null; then
|
|
echo " OK - 本机内部能连通,说明 Incus NAT 转发链路没问题"
|
|
echo " 若外部(比如你自己电脑)连不上,问题基本可以定位在: OCI控制台Security List 没放行"
|
|
else
|
|
echo " !! 本机内部都连不上,问题在 Incus/容器内sshd本身,检查: incus exec ${NAME} -- rc-service sshd status"
|
|
fi
|
|
|
|
echo "3) 当前资源限制:"
|
|
echo " CPU: $(incus config get "$NAME" limits.cpu.allowance 2>/dev/null || echo '未设置(不限)')"
|
|
echo " 内存: $(incus config get "$NAME" limits.memory 2>/dev/null || echo '未设置(不限)')"
|
|
echo " 磁盘: $(incus config device get "$NAME" root size 2>/dev/null || echo '未设置(不限)')"
|
|
}
|
|
|
|
# ================= 主入口 =================
|
|
require_root
|
|
|
|
case "$1" in
|
|
init)
|
|
cmd_init
|
|
;;
|
|
create)
|
|
cmd_create "$2" "$3" "$4" "$5"
|
|
;;
|
|
resize)
|
|
cmd_resize "$2" "$3" "$4" "$5"
|
|
;;
|
|
list)
|
|
cmd_list
|
|
;;
|
|
delete)
|
|
cmd_delete "$2"
|
|
;;
|
|
check)
|
|
cmd_check "$2"
|
|
;;
|
|
*)
|
|
echo "用法:"
|
|
echo " sudo ./chicken.sh init 初始化环境(装Incus+自动init+放开防火墙,只需跑一次)"
|
|
echo " sudo ./chicken.sh create [N] [CPU%] [MEM] [DISK] 批量创建N台小鸡(默认1台,资源限制用脚本顶部默认值)"
|
|
echo " 示例: sudo ./chicken.sh create 50 5% 128MiB 512MiB"
|
|
echo " sudo ./chicken.sh resize <名称> [CPU%] [MEM] [DISK] 调整已存在小鸡的资源限制(留空项不改)"
|
|
echo " sudo ./chicken.sh list 查看所有小鸡状态和账号信息/资源限制"
|
|
echo " sudo ./chicken.sh delete <名称> 删除指定小鸡"
|
|
echo " sudo ./chicken.sh check <名称> 自检该小鸡SSH是否真的通,并显示资源限制"
|
|
exit 1
|
|
;;
|
|
esac
|