netdata：shell脚本获取当前操作系统(linux)的信息

系统管理员 2023-01-02 11:25 106阅读 0赞

**检测内核**

#!/usr/bin/env sh
    
    # -------------------------------------------------------------------------------------------------
    # detect the kernel
    
    KERNEL_NAME="$(uname -s)"
    KERNEL_VERSION="$(uname -r)"
    ARCHITECTURE="$(uname -m)"
    
    
    echo "NETDATA_SYSTEM_KERNEL_NAME=${KERNEL_NAME}"
    echo "NETDATA_SYSTEM_KERNEL_VERSION=${KERNEL_VERSION}"
    echo "NETDATA_SYSTEM_ARCHITECTURE=${ARCHITECTURE}"

![在这里插入图片描述][20210105174842192.png]

**检测虚拟化技术**

#!/usr/bin/env sh
    
    
    # -------------------------------------------------------------------------------------------------
    # 检测虚拟化技术
    
    if [ -z "${VIRTUALIZATION}" ]; then
        VIRTUALIZATION="unknown"
        VIRT_DETECTION="none"
    
        if [ -n "$(command -v systemd-detect-virt 2>/dev/null)" ]; then
                VIRTUALIZATION="$(systemd-detect-virt -v)"
                VIRT_DETECTION="systemd-detect-virt"
                CONTAINER="$(systemd-detect-virt -c)"
                CONT_DETECTION="systemd-detect-virt"
        else
                if grep -q "^flags.*hypervisor" /proc/cpuinfo 2>/dev/null; then
                        VIRTUALIZATION="hypervisor"
                        VIRT_DETECTION="/proc/cpuinfo"
                elif [ -n "$(command -v dmidecode)" ] && dmidecode -s system-product-name 2>/dev/null | grep -q "VMware\|Virtual\|KVM\|Bochs"; then
                        VIRTUALIZATION="$(dmidecode -s system-product-name)"
                        VIRT_DETECTION="dmidecode"
                else
                        VIRTUALIZATION="none"
                fi
        fi
        if [ -z "${VIRTUALIZATION}" ]; then
          # Output from the command is outside of spec
          VIRTUALIZATION="unknown"
        fi
    else
        # Passed from outside - probably in docker run
        VIRT_DETECTION="provided"
    fi
    
    
    
    echo "NETDATA_SYSTEM_VIRTUALIZATION=${VIRTUALIZATION}"  
    echo "NETDATA_SYSTEM_VIRT_DETECTION=${VIRT_DETECTION}"
    echo "NETDATA_SYSTEM_CONTAINER=${CONTAINER}"
    echo "NETDATA_SYSTEM_CONTAINER_DETECTION=${CONT_DETECTION}"

![在这里插入图片描述][20210105180343278.png]

变量说明：

*  VIRTUALIZATION：是虚拟机还是物理机
 *  VIRT\_DETECTION：检测是否虚拟的方法
 *  CONTAINER：检测容器
 *  CONT\_DETECTION：检测容器的方法

语法说明：

*  [if][]条件判断  
    ![在这里插入图片描述][20210105175616794.png]
 *  [检查Linux服务器是物理的还是虚拟的][Linux]
 *  [command -v][]可以判断一个命令是否支持

**检测操作系统**

#!/usr/bin/env sh
    CONTAINER="unknown"
    CONT_DETECTION="none"
    
    
    #--------------------------------------------------检测操作系统---------------------------------------------
    #最初假设所有操作系统检测值都是针对一个容器的，如果我们是裸机，这些值将在稍后移动
    
    CONTAINER_OS_DETECTION="unknown"
    CONTAINER_NAME="unknown"
    CONTAINER_VERSION="unknown"
    CONTAINER_VERSION_ID="unknown"
    CONTAINER_ID="unknown"
    CONTAINER_ID_LIKE="unknown"
    
    
    if [ -f "/etc/os-release" ]; then
                    eval "$(grep -E "^(NAME|ID|ID_LIKE|VERSION|VERSION_ID)=" </etc/os-release | sed 's/^/CONTAINER_/')"
                    CONTAINER_OS_DETECTION="/etc/os-release"
    fi
    
    
    #如果Netdata未在容器中运行，则使用本地检测作为主机
    HOST_OS_DETECTION="unknown"
    HOST_NAME="unknown"
    HOST_VERSION="unknown"
    HOST_VERSION_ID="unknown"
    HOST_ID="unknown"
    HOST_ID_LIKE="unknown"
    
    
    if [ "${CONTAINER}" = "unknown" ]; then
            for v in NAME ID ID_LIKE VERSION VERSION_ID OS_DETECTION; do
                     eval "HOST_$v=\$CONTAINER_$v; CONTAINER_$v=none"
            done
    
    fi
    
    
    
    
    echo "NETDATA_HOST_OS_NAME=${HOST_NAME}"
    echo "NETDATA_HOST_OS_ID=${HOST_ID}"
    echo "NETDATA_HOST_OS_ID_LIKE=${HOST_ID_LIKE}"
    echo "NETDATA_HOST_OS_VERSION=${HOST_VERSION}"
    echo "NETDATA_HOST_OS_VERSION_ID=${HOST_VERSION_ID}"
    echo "NETDATA_HOST_OS_DETECTION=${HOST_OS_DETECTION}"
    
    echo "NETDATA_CONTAINER_OS_DETECTION=${CONTAINER_OS_DETECTION}"
    echo "NETDATA_CONTAINER_OS_NAME=${CONTAINER_NAME}"
    echo "NETDATA_CONTAINER_OS_VERSION=${CONTAINER_VERSION}"
    echo "NETDATA_CONTAINER_OS_VERSION_ID=${CONTAINER_VERSION_ID}"
    echo "NETDATA_CONTAINER_OS_ID=${CONTAINER_ID}"
    echo "NETDATA_CONTAINER_OS_ID_LIKE=${CONTAINER_ID_LIKE}"

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3poaXpoZW5nZ3Vhbg_size_16_color_FFFFFF_t_70]

**检测整个系统RAM**

#!/usr/bin/env sh
    
    # -------------------------------------------------------------------------------------------------
    # 检测整个系统RAM
    
    if [ -r /proc/meminfo ] ; then
            RAM_DETECTION="procfs"
            TOTAL_RAM="$(grep -F MemTotal /proc/meminfo | cut -f 2 -d ':' | sed -e 's/^[[:space:]]*//' -e 's/[[:space:]]*$//' | cut -f 1 -d ' ')"
            TOTAL_RAM="$((TOTAL_RAM*1024))"
    fi
    
    
    echo "NETDATA_SYSTEM_TOTAL_RAM=${TOTAL_RAM}"
    echo "NETDATA_SYSTEM_RAM_DETECTION=${RAM_DETECTION}"

![在这里插入图片描述][20210106150007928.png]  
**检测总系统磁盘空间**

#!/usr/bin/env sh
    
    
    
    #--------------------------------------------------检测总系统磁盘空间---------------------------------------------
    DISK_SIZE="unknown"
    DISK_DETECTION="none"
    
    
    if [ -d /sys/block ] && [ -r /proc/devices ] ; then
                    dev_major_whitelist=''
    
                    # This is a list of device names used for block storage devices.
                    # These translate to the prefixs of files in `/dev` indicating the device type.
                    # They are sorted by lowest used device major number, with dynamically assigned ones at the end.
                    # We use this to look up device major numbers in `/proc/devices`
                    device_names='hd sd mfm ad ftl pd nftl dasd intfl mmcblk ub xvd rfd vbd nvme'
    
                    for name in ${device_names} ; do
                            if grep -qE " ${name}\$" /proc/devices ; then
                                    dev_major_whitelist="${dev_major_whitelist}:$(grep -E "${name}\$" /proc/devices | sed -e 's/^[[:space:]]*//' | cut -f 1 -d ' ' | tr '\n' ':'):"
                            fi
                    done
    
                    DISK_DETECTION="sysfs"
                    DISK_SIZE="0"
                    for disk in /sys/block/* ; do
                            if [ -r "${disk}/size" ] && \
                               (echo "${dev_major_whitelist}" | grep -q ":$(cut -f 1 -d ':' "${disk}/dev"):") && \
                               grep -qv 1 "${disk}/removable"
                            then
                                size="$(($(cat "${disk}/size") * 512))"
                                DISK_SIZE="$((DISK_SIZE + size))"
                            fi
                    done
            fi
    
    echo "NETDATA_SYSTEM_TOTAL_DISK_SIZE=${DISK_SIZE}"
    echo "NETDATA_SYSTEM_DISK_DETECTION=${DISK_DETECTION}"

![在这里插入图片描述][20210106150813573.png]

[20210105174842192.png]: /images/20221119/321f3c1a6adb4b969ca9cd32dd048308.png
[20210105180343278.png]: /images/20221119/0f264f4630834285ba1029d790221d53.png
[if]: https://blog.csdn.net/zhizhengguan/article/details/88388124
[20210105175616794.png]: /images/20221119/00542546c6d34326bfd8da37537ccb78.png
[Linux]: https://blog.csdn.net/zhizhengguan/article/details/112245894
[command -v]: https://blog.csdn.net/zhizhengguan/article/details/112249117
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3poaXpoZW5nZ3Vhbg_size_16_color_FFFFFF_t_70]: /images/20221119/4ed1257b22e5443aa60e29b2bd6ec77e.png
[20210106150007928.png]: /images/20221119/5b56dcb8507e40e6bd7cf4a285a8a60a.png
[20210106150813573.png]: /images/20221119/fd206263584e47d5a66cac1a7266961f.png