Initial commit

lxc-toolkit.sh

@@ -0,0 +1,165 @@
+#!/usr/bin/env bash
+#license by MIT
+#https://github.com/no-passwd/lxc-toolkit
+os="none"
+vm="none"
+
+if [ -n "$BASH_VERSION" ]; then
+    echo "lxc-toolkit.sh v1.1"
+else
+	echo -e "\033[31m请使用bash运行脚本,不是sh\033[0m"
+    echo "bash lxc-toolkit.sh"
+	exit
+fi
+
+if [ $# -lt 1 ]; then
+	echo -e "\033[31m错误：请输入参数\033[0m"
+    echo "常见参数: "
+	echo "lxc-toolkit.sh free -> 查看宿主机free -m"
+	echo "lxc-toolkit.sh fdisk -> 查看宿主机fdisk"
+	echo "lxc-toolkit.sh swapon -> 查看宿主机swapon"
+	echo "lxc-toolkit.sh uptime -> 查看宿主机uptime"
+	echo "lxc-toolkit.sh load -> 查看宿主机load负载"
+	echo "lxc-toolkit.sh top -> 查看宿主机processes统计"
+	echo "lxc-toolkit.sh cpu -> 查看宿主机cpu核心"
+	echo "lxc-toolkit.sh all -> 同时运行上述所有的命令"
+    exit 1
+fi
+
+ty=$1
+
+if [ "$(id -u)" != 0 ] ;then
+echo -e "\033[31m未使用root权限运行，无法获取系统信息\033[0m"
+exit 0
+fi
+
+if [ -f /etc/os-release ]; then
+    . /etc/os-release
+if [ "$ID" = "alpine" ]; then
+        #系统是 Alpine Linux。
+		os="alpine"
+else
+        #系统不是 Alpine Linux。
+		os="debian"
+fi
+else
+    #/etc/os-release 文件不存在。将就用debian。其他系统暂时未考虑
+	os="debian"
+fi
+
+#检测alpine的lxc，其实还有更好的方法。暂时没用
+if [ "$os" == "alpine" ]; then
+if grep -qa container=lxc /proc/1/environ; then
+	vm="lxc"
+elif grep -qa lxc /proc/1/cgroup; then
+    vm="lxc"
+else
+    vm="kvm"
+fi
+fi
+
+if [ "$os" == "debian" ] ;then
+if command -v systemd-detect-virt >/dev/null 2>&1; then
+    echo "正在检测环境..."
+if systemd-detect-virt -q; then
+    vm=$(systemd-detect-virt)
+else
+    vm="none"
+fi
+else
+    apt-get install -y virt-what
+	getvm=$(virt-what)
+if [[ "$getvm" == *"lxc"* ]]; then
+    vm="lxc"
+else
+    vm="none"
+fi
+fi
+fi
+
+if [ "$vm" != "lxc" ]
+then
+echo -e "\033[31m虚拟化为 $vm 不是lxc,该脚本对非lxc系统无意义\033[0m"
+exit 0
+fi
+
+echo -e "\033[32m正在检测挂载点...\033[0m"
+read -r device mountpoint fstype rest < /etc/mtab
+echo "挂载点设备名: $device"
+echo "挂载点: $mountpoint"
+echo "文件系统类型: $fstype"
+
+mnt="none"
+if [ "$mountpoint" == "/" ]; then
+if [[ "$device" == *loop* ]]; then
+    mnt="loop"
+fi
+fi
+
+if [ "$vm" == "lxc" ]
+then
+echo -e "\033[32m开始检测宿主机系统信息...\033[0m"
+chmod 755 lxc-check
+if [ "$mnt" == "loop" ] ;then
+if [[ -x "./lxc-check" ]]; then
+if [ "$ty" == "all" ] ; then
+./lxc-check -c -m -d -s -l -p -u
+fi
+if [ "$ty" == "free" ] ; then
+./lxc-check -m
+fi
+if [ "$ty" == "fdisk" ] ; then
+./lxc-check -d
+fi
+if [ "$ty" == "swapon" ] ; then
+./lxc-check -s
+fi
+if [ "$ty" == "uptime" ] ; then
+./lxc-check -u
+fi
+if [ "$ty" == "load" ] ; then
+./lxc-check -l
+fi
+if [ "$ty" == "top" ] ; then
+./lxc-check -p
+fi
+if [ "$ty" == "cpu" ] ; then
+./lxc-check -c
+fi
+else
+   echo -e "\033[31m缺少检测配置文件，退出...\033[0m"
+fi
+else
+if [[ -x "./lxc-check" ]]; then
+if [ "$ty" == "all" ] ; then
+./lxc-check -c -m -s -l -p -u
+fi
+if [ "$ty" == "free" ] ; then
+./lxc-check -m
+fi
+if [ "$ty" == "fdisk" ] ; then
+mount
+fi
+if [ "$ty" == "swapon" ] ; then
+./lxc-check -s
+fi
+if [ "$ty" == "uptime" ] ; then
+./lxc-check -u
+fi
+if [ "$ty" == "load" ] ; then
+./lxc-check -l
+fi
+if [ "$ty" == "top" ] ; then
+./lxc-check -p
+fi
+if [ "$ty" == "cpu" ] ; then
+./lxc-check -c
+fi
+else
+    echo -e "\033[31m缺少检测配置文件，退出...\033[0m"
+fi
+fi
+else
+echo -e "\033[31m系统不是lxc,退出...\033[0m"
+exit 0
+fi

test.c

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+//license by MIT
+//https://github.com/no-passwd/lxc-toolkit
+#define _GNU_SOURCE
+#include <unistd.h>
+#include <stdio.h>
+#include <sys/syscall.h>
+
+int main() {
+    long nprocs = sysconf(_SC_NPROCESSORS_ONLN);
+    if (nprocs >= 0) {
+        printf("从系统调用中获取到的CPU核心数: %ld 个\n", nprocs);
+    } 
+    return 0;
+}