一个轻量的Linux运维监控脚本

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山河已无恙 发表于 2022/02/24 19:33:25 2022/02/24
【摘要】 写在前面我的需求嗯,有几台很老的机器,上面部署的几个很老的应用我需要每周对机器上的一些内存,磁盘,线程,应用和数据库进行巡查监控,输出运维报告因为是很老的东西,所以不敢随便乱动,怕掉坑里.每次巡查都是通过通过命令行的方式一个一个指标处理的。我是这样做的写了一个巡查脚本,输入一些需要监控的核心指标脚本获取指标只使用系统自带的一些命令,没有安装任何工具。这里要说明:这种方式很 old,对于这样的...

写在前面


我的需求

  • 嗯,有几台很老的机器,上面部署的几个很老的应用
  • 我需要每周对机器上的一些内存,磁盘,线程,应用和数据库进行巡查监控,输出运维报告
  • 因为是很老的东西,所以不敢随便乱动,怕掉坑里.
  • 每次巡查都是通过通过命令行的方式一个一个指标处理的。

我是这样做的

  • 写了一个巡查脚本,输入一些需要监控的核心指标
  • 脚本获取指标只使用系统自带的一些命令,没有安装任何工具。
  • 这里要说明:这种方式很 old,对于这样的多机器自动化巡查监控
  • 如果只是基础指标监控,轻量一点可以使用:
  • Ansible利用template等模块,魔法变量系统变量直接获取指标信息
  • 或者ansible-galaxy找找有没有相关的角色
  • 如果需要告警监控触发器自动发现主被动监控之类的功能,则需要部署一些重量级的:
  • 可以使用PrometheusZabbixNagiosCacti
  • 通过容器化的方式也是很容易实现的。

我的生命不长,但是,如你所说,我是自己生命的主宰。-----《阳光姐妹淘》


下面就脚本和小伙伴简单介绍下,如果小伙伴也有我这样的情况,可以参考。主要监控信息有以下几部分内容

  • 系统基础信息
  • 内存交换分区相关信息
  • CPU相关信息
  • 磁盘和IO相关信息
  • 进程相关信息
  • 网络相关信息

系统基础信息

系统基础信息包括一下几部分:

  • 内核信息
  • 操作系统版本
  • 当前时间及系统运行时间
  • 当前登录用户数
┌──[root@vms81.liruilongs.github.io]-[~]
└─$sh shell.sh  bash_os

SPN 日常巡查脚本输出

##############   系统基础信息 #######

------------------------------------
|内核信息:        3.10.0-693.el7.x86_64
------------------------------------
|操作系统版本:   CentOS Linux release 7.4.1708 (Core)
------------------------------------
|当前时间及运行时间:    18:06:22 up 9 min
------------------------------------
|当前登录用户数:     1 user
------------------------------------

在这里插入图片描述

对应的脚本中的函数

function bash_os() {
    # "系统基础信息"

    #内核信息
    kernel=$(uname -r)
    #操作系统版本
    release=$(cat /etc/redhat-release)
    #主机名称
    hostname=$HOSTNAME
    #当前时间及运行时间
    dateload=$(uptime | awk -F "," '{print $1}')
    # 当前登录用户数
    users=$(uptime | awk -F "," '{print $2}')

    echo -e "\n\033[32m##############   系统基础信息 #######\033[0m\n"
    echo -e "\033[32m------------------------------------\033[0m"
    echo -e "|内核信息:\033[31m        $kernel           \033[0m"
    echo -e "\033[32m------------------------------------\033[0m"
    echo -e "|操作系统版本:\033[31m   $release        \033[0m"
    echo -e "\033[32m------------------------------------\033[0m"
    echo -e "|当前时间及运行时间:\033[31m   $dateload        \033[0m"
    echo -e "\033[32m------------------------------------\033[0m"
    echo -e "|当前登录用户数:\033[31m   $users        \033[0m"
    echo -e "\033[32m------------------------------------\033[0m"
}

内存交换分区相关信息

内存信息包括一下几部分:

  • 总内存容量
  • 用户程序内存量
  • 多进程共享内存量
  • 缓存占用内存量
  • 空闲内存容量
  • 剩余可用内存容量
  • 可用内存百分比
  • 总的交换分区容量
  • 用户使用的交换分区容量
  • 剩余交换分区容量
  • 可用交换分区占比
################## 内存 ############

------------------------------------
|总内存容量:        3.10G
------------------------------------
|用户程序内存量:   1.21G
------------------------------------
|多进程共享内存量: 0.02G
------------------------------------
|缓存占用内存量:   1759MB
------------------------------------
|空闲内存容量:     0.18G
------------------------------------
|剩余可用内存容量:  1.57G
------------------------------------
|可用内存百分比:   50.68%
------------------------------------
############## 交换分区 #############

------------------------------------
总的交换分区容量:    0.00G
------------------------------------
|用户使用的交换分区容量:   0.00G
------------------------------------
|剩余交换分区容量:  0.00G
------------------------------------
|占用内存资源最多的10个进程列表:
434568 kube-apiserver --advertise-address=192.168.26.81 --allow-privileged=true --token-auth-file=/etc/kubernetes/pki/liruilong.csv --authorization-mode=Node,RBAC --client-ca-file=/etc/kubernetes/pki/ca.crt --enable-admission-plugins=NodeRestriction --enable-bootstrap-token-auth=true --etcd-cafile=/etc/kubernetes/pki/etcd/ca.crt --etcd-certfile=/etc/kubernetes/pki/apiserver-etcd-client.crt --etcd-keyfile=/etc/kubernetes/pki/apiserver-etcd-client.key --etcd-servers=https://127.0.0.1:2379 --kubelet-client-certificate=/etc/kubernetes/pki/apiserver-kubelet-client.crt --kubelet-client-key=/etc/kubernetes/pki/apiserver-kubelet-client.key --kubelet-preferred-address-types=InternalIP,ExternalIP,Hostname --proxy-client-cert-file=/etc/kubernetes/pki/front-proxy-client.crt --proxy-client-key-file=/etc/kubernetes/pki/front-proxy-client.key --requestheader-allowed-names=front-proxy-client --requestheader-client-ca-file=/etc/kubernetes/pki/front-proxy-ca.crt --requestheader-extra-headers-prefix=X-Remote-Extra- --requestheader-group-headers=X-Remote-Group --requestheader-username-headers=X-Remote-User --secure-port=6443 --service-account-issuer=https://kubernetes.default.svc.cluster.local --service-account-key-file=/etc/kubernetes/pki/sa.pub --service-account-signing-key-file=/etc/kubernetes/pki/sa.key --service-cluster-ip-range=10.96.0.0/12 --tls-cert-file=/etc/kubernetes/pki/apiserver.crt --tls-private-key-file=/etc/kubernetes/pki/apiserver.key
140716 /usr/bin/kubelet --bootstrap-kubeconfig=/etc/kubernetes/bootstrap-kubelet.conf --kubeconfig=/etc/kubernetes/kubelet.conf --config=/var/lib/kubelet/config.yaml --network-plugin=cni --pod-infra-container-image=registry.aliyuncs.com/google_containers/pause:3.5
95636 kube-controller-manager --allocate-node-cidrs=true --authentication-kubeconfig=/etc/kubernetes/controller-manager.conf --authorization-kubeconfig=/etc/kubernetes/controller-manager.conf --bind-address=127.0.0.1 --client-ca-file=/etc/kubernetes/pki/ca.crt --cluster-cidr=10.244.0.0/16 --cluster-name=kubernetes --cluster-signing-cert-file=/etc/kubernetes/pki/ca.crt --cluster-signing-key-file=/etc/kubernetes/pki/ca.key --controllers=*,bootstrapsigner,tokencleaner --kubeconfig=/etc/kubernetes/controller-manager.conf --leader-elect=true --port=0 --requestheader-client-ca-file=/etc/kubernetes/pki/front-proxy-ca.crt --root-ca-file=/etc/kubernetes/pki/ca.crt --service-account-private-key-file=/etc/kubernetes/pki/sa.key --service-cluster-ip-range=10.96.0.0/12 --use-service-account-credentials=true
94252 etcd --advertise-client-urls=https://192.168.26.81:2379 --cert-file=/etc/kubernetes/pki/etcd/server.crt --client-cert-auth=true --data-dir=/var/lib/etcd --initial-advertise-peer-urls=https://192.168.26.81:2380 --initial-cluster=vms81.liruilongs.github.io=https://192.168.26.81:2380 --key-file=/etc/kubernetes/pki/etcd/server.key --listen-client-urls=https://127.0.0.1:2379,https://192.168.26.81:2379 --listen-metrics-urls=http://127.0.0.1:2381 --listen-peer-urls=https://192.168.26.81:2380 --name=vms81.liruilongs.github.io --peer-cert-file=/etc/kubernetes/pki/etcd/peer.crt --peer-client-cert-auth=true --peer-key-file=/etc/kubernetes/pki/etcd/peer.key --peer-trusted-ca-file=/etc/kubernetes/pki/etcd/ca.crt --snapshot-count=10000 --trusted-ca-file=/etc/kubernetes/pki/etcd/ca.crt
90888 /usr/bin/dockerd --insecure-registry 192.168.26.56 -H fd:// --containerd=/run/containerd/containerd.sock
44736 /usr/bin/containerd
43584 calico-node -felix
40900 kube-scheduler --authentication-kubeconfig=/etc/kubernetes/scheduler.conf --authorization-kubeconfig=/etc/kubernetes/scheduler.conf --bind-address=127.0.0.1 --kubeconfig=/etc/kubernetes/scheduler.conf --leader-elect=true --port=0
37572 calico-node -allocate-tunnel-addrs
37284 calico-node -confd%
------------------------------------

在这里插入图片描述
对应的脚本中的函数

function memory() {

    # 内存相关数据统计`free -m`
    #总内存容量
    mem_total=$(free -m | awk '/Mem/{printf "%.2fG", $2/1024}')
    # 用户程序占用内存量
    mem_user=$(free -m | awk '/Mem/{printf "%.2fG", $3/1024}')
    #  多进程共享占用内存量
    mem_shared=$(free -m | awk '/Mem/{printf "%.2fG", $5/1024}')
    #缓存占用内存量
    mem_buff_cache=$(free -m | awk '/Mem/{printf "%.fMB",  $(NF-1)}')
    #空闲内存容量
    mem_free=$(free -m | awk '/Mem/{printf "%.2fG", $4/1024 }')
    # 剩余可用内存容量
    mem_available=$(free -m | awk 'NR==2{printf "%.2fG",$NF/1024}')
    # 可用内存使用占比
    mem_percentage=$(free -m | awk '/Mem/{printf "%.2f", $NF/$2*100}')
    #总的交换分区容量
    swap_total=$(free -m | awk '/Swap/{printf "%.2fG", $2/1024}')
    #用户使用的交换分区容量
    swap_user=$(free -m | awk '/Swap/{printf "%.2fG",$3/1024}')
    #剩余交换分区容量
    swap_free=$(free -m | awk '/Swap/{printf "%.2fG",$4/1024}')
    #可用交换分区占比
    swap_percentage=$(free -m | awk '/Swap/{printf "%.2f",$4/$2*100}')
    #占用内存资源最多的10个进程列表
    top_proc_mem=$(ps --no-headers -eo rss,args | sort -k1 -n -r | head -10)

    echo -e "\n\033[32m################## 内存 ############\033[0m\n"
    echo -e "\033[32m------------------------------------\033[0m"
    echo -e "|总内存容量:\033[31m        $mem_total           \033[0m"
    echo -e "\033[32m------------------------------------\033[0m"
    echo -e "|用户程序内存量:\033[31m   $mem_user        \033[0m"
    echo -e "\033[32m------------------------------------\033[0m"
    echo -e "|多进程共享内存量:\033[31m $mem_shared     \033[0m"
    echo -e "\033[32m------------------------------------\033[0m"
    echo -e "|缓存占用内存量:\033[31m   $mem_buff_cache    \033[0m"
    echo -e "\033[32m------------------------------------\033[0m"
    echo -e "|空闲内存容量:\033[31m     $mem_free           \033[0m"
    echo -e "\033[32m------------------------------------\033[0m"
    echo -e "|剩余可用内存容量:\033[31m  $mem_available    \033[0m"
    echo -e "\033[32m------------------------------------\033[0m"
    echo -e "|可用内存百分比:\033[31m   $mem_percentage%   \033[0m"
    echo -e "\033[32m------------------------------------\033[0m"
    echo -e "\033[32m############## 交换分区 #############\033[0m\n"
    echo -e "\033[32m------------------------------------\033[0m"
    echo -e "总的交换分区容量:\033[31m    $swap_total    \033[0m"
    echo -e "\033[32m------------------------------------\033[0m"
    echo -e "|用户使用的交换分区容量:\033[31m   $swap_user   \033[0m"
    echo -e "\033[32m------------------------------------\033[0m"
    echo -e "|剩余交换分区容量:\033[31m  ${swap_free}"
    echo -e "\033[32m------------------------------------\033[0m"
    if [ $(free -m | awk '/Swap/{print $2}') -ne 0 ]; then

        echo -e "|可用交换分区占比:\033[31m  $swap_percentage%    \033[0m"
        echo -e "\033[32m------------------------------------\033[0m"
    fi
    echo -e "|占用内存资源最多的10个进程列表:"
    echo -e "\033[31m$top_proc_mem%    \033[0m"
    echo -e "\033[32m------------------------------------\033[0m"
}

CPU相关信息

CPU相关信息包含:

  • CPU型号
  • CPU内核数量
  • CPU最近1/5/15分钟的平均负载
  • 当前CPU中断数量
  • 当前上下文切换数量
################## CPU 相关 ############

------------------------------------
|CPU型号:            AMD Ryzen 7 2700U with Radeon Vega Mobile Gfx
------------------------------------
|CPU内核数量:2
------------------------------------
|CPU最近1/5/15分钟的平均负载:0.34 0.52 0.90
------------------------------------
|CPU中断数量:1544
------------------------------------
|上下文切换数量:2639
------------------------------------
|占用CPU资源最多的10个进程列表:
14.3 kube-apiserver --advertise-address=192.168.26.81 --allow-privileged=true --token-auth-file=/etc/kubernetes/pki/liruilong.csv --authorization-mode=Node,RBAC --client-ca-file=/etc/kubernetes/pki/ca.crt --enable-admission-plugins=NodeRestriction --enable-bootstrap-token-auth=true --etcd-cafile=/etc/kubernetes/pki/etcd/ca.crt --etcd-certfile=/etc/kubernetes/pki/apiserver-etcd-client.crt --etcd-keyfile=/etc/kubernetes/pki/apiserver-etcd-client.key --etcd-servers=https://127.0.0.1:2379 --kubelet-client-certificate=/etc/kubernetes/pki/apiserver-kubelet-client.crt --kubelet-client-key=/etc/kubernetes/pki/apiserver-kubelet-client.key --kubelet-preferred-address-types=InternalIP,ExternalIP,Hostname --proxy-client-cert-file=/etc/kubernetes/pki/front-proxy-client.crt --proxy-client-key-file=/etc/kubernetes/pki/front-proxy-client.key --requestheader-allowed-names=front-proxy-client --requestheader-client-ca-file=/etc/kubernetes/pki/front-proxy-ca.crt --requestheader-extra-headers-prefix=X-Remote-Extra- --requestheader-group-headers=X-Remote-Group --requestheader-username-headers=X-Remote-User --secure-port=6443 --service-account-issuer=https://kubernetes.default.svc.cluster.local --service-account-key-file=/etc/kubernetes/pki/sa.pub --service-account-signing-key-file=/etc/kubernetes/pki/sa.key --service-cluster-ip-range=10.96.0.0/12 --tls-cert-file=/etc/kubernetes/pki/apiserver.crt --tls-private-key-file=/etc/kubernetes/pki/apiserver.key
 5.9 kube-controller-manager --allocate-node-cidrs=true --authentication-kubeconfig=/etc/kubernetes/controller-manager.conf --authorization-kubeconfig=/etc/kubernetes/controller-manager.conf --bind-address=127.0.0.1 --client-ca-file=/etc/kubernetes/pki/ca.crt --cluster-cidr=10.244.0.0/16 --cluster-name=kubernetes --cluster-signing-cert-file=/etc/kubernetes/pki/ca.crt --cluster-signing-key-file=/etc/kubernetes/pki/ca.key --controllers=*,bootstrapsigner,tokencleaner --kubeconfig=/etc/kubernetes/controller-manager.conf --leader-elect=true --port=0 --requestheader-client-ca-file=/etc/kubernetes/pki/front-proxy-ca.crt --root-ca-file=/etc/kubernetes/pki/ca.crt --service-account-private-key-file=/etc/kubernetes/pki/sa.key --service-cluster-ip-range=10.96.0.0/12 --use-service-account-credentials=true
 5.8 /usr/bin/kubelet --bootstrap-kubeconfig=/etc/kubernetes/bootstrap-kubelet.conf --kubeconfig=/etc/kubernetes/kubelet.conf --config=/var/lib/kubelet/config.yaml --network-plugin=cni --pod-infra-container-image=registry.aliyuncs.com/google_containers/pause:3.5
 5.1 calico-node -felix
 3.4 etcd --advertise-client-urls=https://192.168.26.81:2379 --cert-file=/etc/kubernetes/pki/etcd/server.crt --client-cert-auth=true --data-dir=/var/lib/etcd --initial-advertise-peer-urls=https://192.168.26.81:2380 --initial-cluster=vms81.liruilongs.github.io=https://192.168.26.81:2380 --key-file=/etc/kubernetes/pki/etcd/server.key --listen-client-urls=https://127.0.0.1:2379,https://192.168.26.81:2379 --listen-metrics-urls=http://127.0.0.1:2381 --listen-peer-urls=https://192.168.26.81:2380 --name=vms81.liruilongs.github.io --peer-cert-file=/etc/kubernetes/pki/etcd/peer.crt --peer-client-cert-auth=true --peer-key-file=/etc/kubernetes/pki/etcd/peer.key --peer-trusted-ca-file=/etc/kubernetes/pki/etcd/ca.crt --snapshot-count=10000 --trusted-ca-file=/etc/kubernetes/pki/etcd/ca.crt
 2.6 /usr/bin/dockerd --insecure-registry 192.168.26.56 -H fd:// --containerd=/run/containerd/containerd.sock
 0.7 kube-scheduler --authentication-kubeconfig=/etc/kubernetes/scheduler.conf --authorization-kubeconfig=/etc/kubernetes/scheduler.conf --bind-address=127.0.0.1 --kubeconfig=/etc/kubernetes/scheduler.conf --leader-elect=true --port=0
 0.6 /usr/bin/containerd
 0.4 /speaker --port=7472 --config=config --log-level=info
 0.3 [rcu_sched]
------------------------------------

在这里插入图片描述
对应的脚本中的函数


function cpu() {
    #CPU型号
    cpu_info=$(LANG=C lscpu | awk -F: '/Model name/ {print $2}')
    #CPU内核数量
    cpu_core=$(awk '/processor/{core++} END{print core}' /proc/cpuinfo)
    #CPU最近1/5/15分钟的平均负载
    load1515=$(uptime | sed 's/,/ /g' | awk '{for(i=NF-2;i<=NF;i++)print $i }' | xargs)
    #发生中断数量
    irq=$(vmstat 1 1 | awk 'NR==3{print $11}')
    #上下文切换数量
    cs=$(vmstat 1 1 | awk 'NR==3{print $12}')
    #占用CPU资源最多的10个进程列表
    top_proc_cpu=$(ps --no-headers -eo %cpu,args | sort -k1 -n -r | head -10)

    echo -e "\n\033[32m################## CPU 相关 ############\033[0m\n"
    echo -e "\033[32m------------------------------------\033[0m"
    echo -e "|CPU型号:\033[31m$cpu_info           \033[0m"
    echo -e "\033[32m------------------------------------\033[0m"
    echo -e "|CPU内核数量:\033[31m$cpu_core        \033[0m"
    echo -e "\033[32m------------------------------------\033[0m"
    echo -e "|CPU最近1/5/15分钟的平均负载:\033[31m$load1515        \033[0m"
    echo -e "\033[32m------------------------------------\033[0m"
    echo -e "|CPU中断数量:\033[31m$irq        \033[0m"
    echo -e "\033[32m------------------------------------\033[0m"
    echo -e "|上下文切换数量:\033[31m$cs        \033[0m"
    echo -e "\033[32m------------------------------------\033[0m"
    echo -e "|占用CPU资源最多的10个进程列表:"
    echo -e "\033[31m$top_proc_cpu           \033[0m"
    echo -e "\033[32m------------------------------------\033[0m"

}

磁盘和IO相关信息

磁盘和IO相关信息包括:

  • 磁盘总数
  • 分区总数
  • 磁盘分区信息
  • 写入磁盘的总块数
  • 从磁盘读出的块数
  • 每秒写磁盘块的速率
  • 分区挂载信息

在这里插入图片描述
对应的脚本中的函数

################## 磁盘IO 相关 ############

------------------------------------
|磁盘总数:1
------------------------------------
|分区总数:2
------------------------------------
|磁盘分区信息:
sda      8:0    0  200G  0 disk
├─sda1   8:1    0  150G  0 part /
└─sda2   8:2    0   10G  0 part
------------------------------------
|写入磁盘的总块数:74
------------------------------------
|从磁盘读出的块数:272
------------------------------------
|每秒写磁盘块的速率:2
------------------------------------
|分区挂载信息:
文件系统        容量  已用  可用 已用% 挂载点
/dev/sda1       150G   10G  140G    7% /
devtmpfs        1.6G     0  1.6G    0% /dev
tmpfs           1.6G     0  1.6G    0% /dev/shm
tmpfs           1.6G   20M  1.6G    2% /run
tmpfs           1.6G     0  1.6G    0% /sys/fs/cgroup
overlay         150G   10G  140G    7% /var/lib/docker/overlay2/0370fc2d32a8fba7bcaf18a3444dd3cc61121ba573da75445473d5609e82f466/merged
shm              64M     0   64M    0% /var/lib/docker/containers/dd4b3412559057ac9b3fcff5e5a1ab861fa2290c9de927b6b92c1a56afd57468/mounts/shm
overlay         150G   10G  140G    7% /var/lib/docker/overlay2/650230f0350777c4c670d2d9a7bd1a4e83f2c391dc499889af2fb6b1306200ba/merged
shm              64M     0   64M    0% /var/lib/docker/containers/4ac13265340675dbd5122575b5df523d9711f7c282f5516c93ebddd5fb6d0cba/mounts/shm
overlay         150G   10G  140G    7% /var/lib/docker/overlay2/21acb391efe73a0608564f157a18f4805c86503dadce8a818c1ec3bb9f0bc9d3/merged
overlay         150G   10G  140G    7% /var/lib/docker/overlay2/43c68357d19f0a42551bfe1db0f06d61ca28906d150026a60c087650b32cfd60/merged
shm              64M     0   64M    0% /var/lib/docker/containers/589dd158e86a7000180299eb4264bf69fde530b424d9e508ab8fee80dbba5d08/mounts/shm
shm              64M     0   64M    0% /var/lib/docker/containers/f71b1bb09845613f21adad525e03a7fee4c9eef1b0699117d87cfa9f72de75db/mounts/shm
overlay         150G   10G  140G    7% /var/lib/docker/overlay2/46bb70a2c8944cf3fe0b179906f791f1775eb3c87d2598c8a3e7ba154f6c7e00/merged
overlay         150G   10G  140G    7% /var/lib/docker/overlay2/1d542264230ed8d093971177f13ba90700d5b6d4c8703e89eafe3d548fcd15ab/merged
overlay         150G   10G  140G    7% /var/lib/docker/overlay2/e5023f46fda09e5a04cf392ae0461511930a9095196c0136f0b5e78331488556/merged
overlay         150G   10G  140G    7% /var/lib/docker/overlay2/3e06461dcde6535e1857fb32d5a6b9b7e24479fdde083c2e0a23302e747cb926/merged
tmpfs           3.1G   12K  3.1G    1% /var/lib/kubelet/pods/8dc44e6f-10c8-4336-8d17-3d7d30e068d7/volumes/kubernetes.io~projected/kube-api-access-lrqtd
tmpfs           170M   12K  170M    1% /var/lib/kubelet/pods/3c16b2c9-72b8-42d2-9c56-f572f1c3d715/volumes/kubernetes.io~projected/kube-api-access-cnrsg
tmpfs           3.1G   12K  3.1G    1% /var/lib/kubelet/pods/c468b66c-2c95-49b0-8081-241ae7b7ddb5/volumes/kubernetes.io~projected/kube-api-access-mlwx6
tmpfs           170M   12K  170M    1% /var/lib/kubelet/pods/8628a04d-61f2-42a7-aa29-10318d5628ec/volumes/kubernetes.io~projected/kube-api-access-rqjht
overlay         150G   10G  140G    7% /var/lib/docker/overlay2/97dbbac8525cec33bc85856090675edc8463e46960bb5b5e50347e59eeb45ffc/merged
shm              64M     0   64M    0% /var/lib/docker/containers/a1d8a8046b2e0fde29fe8b36b8621c5773a5c557a6ab7c6a6ffea1d672a87e31/mounts/shm
tmpfs           3.1G   12K  3.1G    1% /var/lib/kubelet/pods/95d09836-f343-4814-8daf-f41b90a5da63/volumes/kubernetes.io~projected/kube-api-access-8zzsm
overlay         150G   10G  140G    7% /var/lib/docker/overlay2/2c9c06fb46aac0de072f2f27d6c20b9da6e9891065558341d569f9dfbfbab4ec/merged
tmpfs           3.1G   12K  3.1G    1% /var/lib/kubelet/pods/dbe168eb-be54-4248-a1ac-c98e209dd735/volumes/kubernetes.io~projected/kube-api-access-56x97
shm              64M     0   64M    0% /var/lib/docker/containers/523c33b8c407e3a71150ffedb34035074bf4777f18cf26067c3c033119bb67b2/mounts/shm
overlay         150G   10G  140G    7% /var/lib/docker/overlay2/601f14c96dc128154eba3be7db81c0585b90ded24ca3f833d860dbfed57bca8e/merged
shm              64M     0   64M    0% /var/lib/docker/containers/389ca895399660bdc841974db7f01b71e38955c4eabbba9be680a2ef17ee7867/mounts/shm
overlay         150G   10G  140G    7% /var/lib/docker/overlay2/cd288d78dde65645df76d6dc1e56acada16a699412db9a0fe723d7f07dcc25b9/merged
overlay         150G   10G  140G    7% /var/lib/docker/overlay2/49742d1a276e657bf45bd80be2f375282af29490dad15bc4c3ba99beeb9bd115/merged
overlay         150G   10G  140G    7% /var/lib/docker/overlay2/76a1d6e77213fa534970e4a3d5e912e59f2b46e3a804bec37378fcca52e15183/merged
overlay         150G   10G  140G    7% /var/lib/docker/overlay2/484276ff32ad852232ca4ce9c623d8fbf00ae4bd7854ac45e480cb2e9bd8b5e6/merged
shm              64M     0   64M    0% /var/lib/docker/containers/ac12271bfe6d640b98634b054d45711c12cdecc9dca5d7dff19e62d2959bf9a9/mounts/shm
overlay         150G   10G  140G    7% /var/lib/docker/overlay2/269e190d7572774c7c68e1b33d11d3744913e9dc55bcd95d2a610fa1410036ac/merged
overlay         150G   10G  140G    7% /var/lib/docker/overlay2/753af2fd5b0d4a80fc592fd30d58666314f40b2bc532524679c1cb50bf8c863b/merged
shm              64M     0   64M    0% /var/lib/docker/containers/745e022eb0250c13428ccc0cee5711d00781ecab73b5162efb1feba31873691b/mounts/shm
overlay         150G   10G  140G    7% /var/lib/docker/overlay2/c429b395aeb4fa89c1d3f962659fcd3401daf66478b050978de298d072e8a070/merged
shm              64M     0   64M    0% /var/lib/docker/containers/8f02998d5eaf938b574bc0786942b0e706af6ed9bce6162331ab8e665d863ac4/mounts/shm
overlay         150G   10G  140G    7% /var/lib/docker/overlay2/8904325f526fa3cd547065643b5d91a524fa5500d0e1da1fdbed7cbcefefcfbe/merged
overlay         150G   10G  140G    7% /var/lib/docker/overlay2/76d066655c0543fe08b4533ffe458df11a067416bf34cea2044d516ddc383791/merged
tmpfs           318M     0  318M    0% /run/user/0
tmpfs           3.1G   12K  3.1G    1% /var/lib/kubelet/pods/a14eb2df-b067-46a2-99e9-e4aba955832b/volumes/kubernetes.io~projected/kube-api-access-qqjjw
overlay         150G   10G  140G    7% /var/lib/docker/overlay2/7767f584dd56da2abf00246a80fc672de6b42f9254bbcc287e2018f507c6f9e3/merged
shm              64M     0   64M    0% /var/lib/docker/containers/399881a65fdd43e1285e0fa5999f49e5935258cf28c79320d0358d8211449b03/mounts/shm
overlay         150G   10G  140G    7% /var/lib/docker/overlay2/cfd2cad23e6b790f5c41bb61ed9b474534623e7fe47d593375c5ab44bc2505df/merged
tmpfs           3.1G     0  3.1G    0% /var/lib/kubelet/pods/be82f8c8-deb7-4613-a9ae-26c29a478e09/volumes/kubernetes.io~secret/kubernetes-dashboard-certs
tmpfs           3.1G   12K  3.1G    1% /var/lib/kubelet/pods/be82f8c8-deb7-4613-a9ae-26c29a478e09/volumes/kubernetes.io~projected/kube-api-access-8jlj7
tmpfs           3.1G   12K  3.1G    1% /var/lib/kubelet/pods/23138c5c-1af0-47cf-bae3-96176987cdcf/volumes/kubernetes.io~projected/kube-api-access-m7tn5
overlay         150G   10G  140G    7% /var/lib/docker/overlay2/120df040da0b33e2ca103484488de82c77ba1a7035072cba17369abdb9c11cf5/merged
overlay         150G   10G  140G    7% /var/lib/docker/overlay2/100d7769672fa6f0094af996497671dafda20c15b2b4d7cf6aa19275e48a2b75/merged
shm              64M     0   64M    0% /var/lib/docker/containers/14542965702ed9d933fd27be54fc20104117d3b9590efc96e452f0edef4f5c82/mounts/shm
shm              64M     0   64M    0% /var/lib/docker/containers/b3ba89290656559ea0a7b1d58f0c107c876136dee65bd069ee0f88879d48c7ec/mounts/shm
overlay         150G   10G  140G    7% /var/lib/docker/overlay2/79ff92c12ad8392bffd74e1b495b53d390ac11a3fbf5d738c26619e8eb371473/merged
overlay         150G   10G  140G    7% /var/lib/docker/overlay2/284d770969fb28dd6e1530643a072a90dab620ebe2477c758eb63cd5feb7defa/merged
------------------------------------

在这里插入图片描述

function disk_io() {
    #分区挂载信息
    disk=$(df -h)
    # 磁盘总数
    disk_total=$(vmstat -D | awk 'NR==1{print $1}')
    # 分区总数
    disk_sub=$(vmstat -D | awk 'NR==2{print $1}')
    #磁盘分区信息
    lsblk_=$(lsblk -n)
    #写入磁盘的总块数
    bo=$(vmstat 1 1 | awk 'NR==3{print $10}')
    #从磁盘读出的块数
    bi=$(vmstat 1 1 | awk 'NR==3{print $9}')
    #每秒写磁盘块的速率
    wa=$(vmstat 1 1 | awk 'NR==3{print $16}')

    echo -e "\n\033[32m################## 磁盘IO 相关 ############\033[0m\n"
    echo -e "\033[32m------------------------------------\033[0m"
    echo -e "|磁盘总数:\033[31m$disk_total           \033[0m"
    echo -e "\033[32m------------------------------------\033[0m"
    echo -e "|分区总数:\033[31m$disk_sub        \033[0m"
    echo -e "\033[32m------------------------------------\033[0m"
    echo -e "|磁盘分区信息:"
    echo -e "\033[31m$lsblk_           \033[0m"
    echo -e "\033[32m------------------------------------\033[0m"
    echo -e "|写入磁盘的总块数:\033[31m$bo       \033[0m"
    echo -e "\033[32m------------------------------------\033[0m"
    echo -e "|从磁盘读出的块数:\033[31m$bi       \033[0m"
    echo -e "\033[32m------------------------------------\033[0m"
    echo -e "|每秒写磁盘块的速率:\033[31m$wa       \033[0m"
    echo -e "\033[32m------------------------------------\033[0m"
    echo -e "|分区挂载信息:"
    echo -e "\033[31m$disk           \033[0m"
    echo -e "\033[32m------------------------------------\033[0m"

}

进程相关信息

进程相关信息包括:

  • 当前进程数量
  • 用户的最大进程数
  • 内核设置的最大进程数
################## 进程 相关 ############

------------------------------------
|进程数量:233
------------------------------------
|用户的最大进程数:12641
------------------------------------
|内核设置的最大进程数:131072
------------------------------------

在这里插入图片描述
对应的脚本中的函数

function procs() {
    #进程数量
    procs=$(ps aux | wc -l)
    #用户的最大进程数
    ulimit_=$(ulimit -u)
    #内核设置的最大进程数
    pid_max=$(sysctl kernel.pid_max | awk '{print $3}')

    echo -e "\n\033[32m################## 进程 相关 ############\033[0m\n"
    echo -e "\033[32m------------------------------------\033[0m"
    echo -e "|进程数量:\033[31m$procs       \033[0m"
    echo -e "\033[32m------------------------------------\033[0m"
    echo -e "|用户的最大进程数:\033[31m$ulimit_       \033[0m"
    echo -e "\033[32m------------------------------------\033[0m"
    echo -e "|内核设置的最大进程数:\033[31m$pid_max       \033[0m"
    echo -e "\033[32m------------------------------------\033[0m"

}

网络相关信息

网络相关信息包括:

  • 本地IP地址列表
  • 获取网卡流量信息
  • 获取暴露端口信息
################## 网络 相关 ############

|本地IP地址列表:
127.0.0.1/8
192.168.26.81/24
172.17.0.1/16
10.244.88.64/32
------------------------------------
------------------------------------
|获取网卡流量信息:
网卡名称          入站数据流量(bytes)  出站数据流量(bytes)
ens32:            40109203             809148
cali86e7ca9e9c2:  0                    438
cali13a4549bf1e:  235243               266076
cali5a282a7bbb0:  454162               485452
cali12cf25006b5:  453448               484697
cali45e02b0b21e:  1175199              666637
lo:               152957840            152957840
calicb34164ec79:  216323               1326677
tunl0:            0                    0
docker0:          0                    0
------------------------------------
|获取暴露端口信息:
Netid  State      Recv-Q Send-Q Local Address:Port               Peer Address:Port
udp    UNCONN     0      0         *:60036                 *:*                   users:(("rpc.statd",pid=974,fd=8))
udp    UNCONN     0      0         *:710                   *:*                   users:(("rpcbind",pid=564,fd=7))
udp    UNCONN     0      0      127.0.0.1:726                   *:*                   users:(("rpc.statd",pid=974,fd=5))
udp    UNCONN     0      0         *:56425                 *:*
udp    UNCONN     0      0         *:20048                 *:*                   users:(("rpc.mountd",pid=975,fd=7))
udp    UNCONN     0      0      192.168.26.81:7946                  *:*                   users:(("speaker",pid=3278,fd=9))
udp    UNCONN     0      0         *:2049                  *:*
udp    UNCONN     0      0         *:111                   *:*                   users:(("rpcbind",pid=564,fd=6))
udp    UNCONN     0      0      127.0.0.1:323                   *:*                   users:(("chronyd",pid=574,fd=1))
udp    UNCONN     0      0        :::710                  :::*                   users:(("rpcbind",pid=564,fd=10))
udp    UNCONN     0      0        :::38016                :::*                   users:(("rpc.statd",pid=974,fd=10))
udp    UNCONN     0      0        :::20048                :::*                   users:(("rpc.mountd",pid=975,fd=9))
udp    UNCONN     0      0        :::2049                 :::*
udp    UNCONN     0      0        :::111                  :::*                   users:(("rpcbind",pid=564,fd=9))
udp    UNCONN     0      0        :::59526                :::*
udp    UNCONN     0      0       ::1:323                  :::*                   users:(("chronyd",pid=574,fd=2))
tcp    LISTEN     0      128    127.0.0.1:9099                  *:*                   users:(("calico-node",pid=4355,fd=8))
tcp    LISTEN     0      128    192.168.26.81:2379                  *:*                   users:(("etcd",pid=2138,fd=9))
tcp    LISTEN     0      128    127.0.0.1:2379                  *:*                   users:(("etcd",pid=2138,fd=8))
.......

在这里插入图片描述
对应的脚本中的函数

function network() {
    #获取网卡流量信息,接收|发送的数据流量,单位为字节(bytes)
    net_monitor=$(cat /proc/net/dev | tail -n +3 | awk 'BEGIN{ print "网卡名称 入站数据流量(bytes) 出站数据流量(bytes)"} {print $1,$2,$10}' | column -t)
    #获取暴露端口信息
    ip_port=$(ss -ntulpa)

     #本地IP地址列表
    localip=$(ip a s | awk '/inet /{print $2}' )


    echo -e "\n\033[32m################## 网络 相关 ############\033[0m\n"
    echo -e "|本地IP地址列表:"
    echo -e "\033[31m$localip    \033[0m"
    echo -e "\033[32m------------------------------------\033[0m"
    echo -e "|获取网卡流量信息:"
    echo -e "\033[31m$net_monitor           \033[0m"
    echo -e "\033[32m------------------------------------\033[0m"
    echo -e "|获取暴露端口信息:"
    echo -e "\033[31m$ip_port           \033[0m"
    echo -e "\033[32m------------------------------------\033[0m"

}

完整的脚本

#!/bin/bash

#@File    :   shell.sh
#@Time    :   2022/01/20 15:48:39
#@Author  :   Li Ruilong
#@Version :   1.0
#@Desc    :   SPN 系统维护脚本
#@Contact :   1224965096@qq.com

echo "      ___           ___         ___
     /  /\         /  /\       /__/\
    /  /:/_       /  /::\      \  \:\
   /  /:/ /\     /  /:/\:\      \  \:\
  /  /:/ /::\   /  /:/~/:/  _____\__\:\
 /__/:/ /:/\:\ /__/:/ /:/  /__/::::::::\
 \  \:\/:/~/:/ \  \:\/:/   \  \:\~~\~~\/
  \  \::/ /:/   \  \::/     \  \:\  
   \__\/ /:/     \  \:\      \  \:\
     /__/:/       \  \:\      \  \:\
     \__\/         \__\/       \__\/
"
echo "SPN 日常巡查脚本输出"
# 清理屏幕
clear

function bash_os() {
    # "系统基础信息"

    #内核信息
    kernel=$(uname -r)
    #操作系统版本
    release=$(cat /etc/redhat-release)
    #主机名称
    hostname=$HOSTNAME
    #当前时间及运行时间
    dateload=$(uptime | awk -F "," '{print $1}')
    # 当前登录用户数
    users=$(uptime | awk -F "," '{print $2}')

    echo -e "\n\033[32m##############   系统基础信息 #######\033[0m\n"
    echo -e "\033[32m------------------------------------\033[0m"
    echo -e "|内核信息:\033[31m        $kernel           \033[0m"
    echo -e "\033[32m------------------------------------\033[0m"
    echo -e "|操作系统版本:\033[31m   $release        \033[0m"
    echo -e "\033[32m------------------------------------\033[0m"
    echo -e "|当前时间及运行时间:\033[31m   $dateload        \033[0m"
    echo -e "\033[32m------------------------------------\033[0m"
    echo -e "|当前登录用户数:\033[31m   $users        \033[0m"
    echo -e "\033[32m------------------------------------\033[0m"
}

function memory() {

    # 内存相关数据统计`free -m`
    #总内存容量
    mem_total=$(free -m | awk '/Mem/{printf "%.2fG", $2/1024}')
    # 用户程序占用内存量
    mem_user=$(free -m | awk '/Mem/{printf "%.2fG", $3/1024}')
    #  多进程共享占用内存量
    mem_shared=$(free -m | awk '/Mem/{printf "%.2fG", $5/1024}')
    #缓存占用内存量
    mem_buff_cache=$(free -m | awk '/Mem/{printf "%.fMB",  $(NF-1)}')
    #空闲内存容量
    mem_free=$(free -m | awk '/Mem/{printf "%.2fG", $4/1024 }')
    # 剩余可用内存容量
    mem_available=$(free -m | awk 'NR==2{printf "%.2fG",$NF/1024}')
    # 可用内存使用占比
    mem_percentage=$(free -m | awk '/Mem/{printf "%.2f", $NF/$2*100}')
    #总的交换分区容量
    swap_total=$(free -m | awk '/Swap/{printf "%.2fG", $2/1024}')
    #用户使用的交换分区容量
    swap_user=$(free -m | awk '/Swap/{printf "%.2fG",$3/1024}')
    #剩余交换分区容量
    swap_free=$(free -m | awk '/Swap/{printf "%.2fG",$4/1024}')
    #可用交换分区占比
    swap_percentage=$(free -m | awk '/Swap/{printf "%.2f",$4/$2*100}')
    #占用内存资源最多的10个进程列表
    top_proc_mem=$(ps --no-headers -eo rss,args | sort -k1 -n -r | head -10)

    echo -e "\n\033[32m################## 内存 ############\033[0m\n"
    echo -e "\033[32m------------------------------------\033[0m"
    echo -e "|总内存容量:\033[31m        $mem_total           \033[0m"
    echo -e "\033[32m------------------------------------\033[0m"
    echo -e "|用户程序内存量:\033[31m   $mem_user        \033[0m"
    echo -e "\033[32m------------------------------------\033[0m"
    echo -e "|多进程共享内存量:\033[31m $mem_shared     \033[0m"
    echo -e "\033[32m------------------------------------\033[0m"
    echo -e "|缓存占用内存量:\033[31m   $mem_buff_cache    \033[0m"
    echo -e "\033[32m------------------------------------\033[0m"
    echo -e "|空闲内存容量:\033[31m     $mem_free           \033[0m"
    echo -e "\033[32m------------------------------------\033[0m"
    echo -e "|剩余可用内存容量:\033[31m  $mem_available    \033[0m"
    echo -e "\033[32m------------------------------------\033[0m"
    echo -e "|可用内存百分比:\033[31m   $mem_percentage%   \033[0m"
    echo -e "\033[32m------------------------------------\033[0m"
    echo -e "\033[32m############## 交换分区 #############\033[0m\n"
    echo -e "\033[32m------------------------------------\033[0m"
    echo -e "总的交换分区容量:\033[31m    $swap_total    \033[0m"
    echo -e "\033[32m------------------------------------\033[0m"
    echo -e "|用户使用的交换分区容量:\033[31m   $swap_user   \033[0m"
    echo -e "\033[32m------------------------------------\033[0m"
    echo -e "|剩余交换分区容量:\033[31m  ${swap_free}"
    echo -e "\033[32m------------------------------------\033[0m"
    if [ $(free -m | awk '/Swap/{print $2}') -ne 0 ]; then

        echo -e "|可用交换分区占比:\033[31m  $swap_percentage%    \033[0m"
        echo -e "\033[32m------------------------------------\033[0m"
    fi
    echo -e "|占用内存资源最多的10个进程列表:"
    echo -e "\033[31m$top_proc_mem%    \033[0m"
    echo -e "\033[32m------------------------------------\033[0m"
}

function cpu() {
    #CPU型号
    cpu_info=$(LANG=C lscpu | awk -F: '/Model name/ {print $2}')

    #CPU内核数量
    cpu_core=$(awk '/processor/{core++} END{print core}' /proc/cpuinfo)

    #CPU最近1/5/15分钟的平均负载
    load1515=$(uptime | sed 's/,/ /g' | awk '{for(i=NF-2;i<=NF;i++)print $i }' | xargs)

    #发生中断数量
    irq=$(vmstat 1 1 | awk 'NR==3{print $11}')

    #上下文切换数量
    cs=$(vmstat 1 1 | awk 'NR==3{print $12}')

    #占用CPU资源最多的10个进程列表
    top_proc_cpu=$(ps --no-headers -eo %cpu,args | sort -k1 -n -r | head -10)

    echo -e "\n\033[32m################## CPU 相关 ############\033[0m\n"
    echo -e "\033[32m------------------------------------\033[0m"
    echo -e "|CPU型号:\033[31m$cpu_info           \033[0m"
    echo -e "\033[32m------------------------------------\033[0m"
    echo -e "|CPU内核数量:\033[31m$cpu_core        \033[0m"
    echo -e "\033[32m------------------------------------\033[0m"
    echo -e "|CPU最近1/5/15分钟的平均负载:\033[31m$load1515        \033[0m"
    echo -e "\033[32m------------------------------------\033[0m"
    echo -e "|CPU中断数量:\033[31m$irq        \033[0m"
    echo -e "\033[32m------------------------------------\033[0m"
    echo -e "|上下文切换数量:\033[31m$cs        \033[0m"
    echo -e "\033[32m------------------------------------\033[0m"
    echo -e "|占用CPU资源最多的10个进程列表:"
    echo -e "\033[31m$top_proc_cpu           \033[0m"
    echo -e "\033[32m------------------------------------\033[0m"

}

function disk_io() {
    #分区挂载信息
    disk=$(df -h)
    # 磁盘总数
    disk_total=$(vmstat -D | awk 'NR==1{print $1}')
    # 分区总数
    disk_sub=$(vmstat -D | awk 'NR==2{print $1}')
    #磁盘分区信息
    lsblk_=$(lsblk -n)
    #写入磁盘的总块数
    bo=$(vmstat 1 1 | awk 'NR==3{print $10}')
    #从磁盘读出的块数
    bi=$(vmstat 1 1 | awk 'NR==3{print $9}')
    #每秒写磁盘块的速率
    wa=$(vmstat 1 1 | awk 'NR==3{print $16}')

    echo -e "\n\033[32m################## 磁盘IO 相关 ############\033[0m\n"
    echo -e "\033[32m------------------------------------\033[0m"
    echo -e "|磁盘总数:\033[31m$disk_total           \033[0m"
    echo -e "\033[32m------------------------------------\033[0m"
    echo -e "|分区总数:\033[31m$disk_sub        \033[0m"
    echo -e "\033[32m------------------------------------\033[0m"
    echo -e "|磁盘分区信息:"
    echo -e "\033[31m$lsblk_           \033[0m"
    echo -e "\033[32m------------------------------------\033[0m"
    echo -e "|写入磁盘的总块数:\033[31m$bo       \033[0m"
    echo -e "\033[32m------------------------------------\033[0m"
    echo -e "|从磁盘读出的块数:\033[31m$bi       \033[0m"
    echo -e "\033[32m------------------------------------\033[0m"
    echo -e "|每秒写磁盘块的速率:\033[31m$wa       \033[0m"
    echo -e "\033[32m------------------------------------\033[0m"
    echo -e "|分区挂载信息:"
    echo -e "\033[31m$disk           \033[0m"
    echo -e "\033[32m------------------------------------\033[0m"

}

function procs() {
    #进程数量
    procs=$(ps aux | wc -l)
    #用户的最大进程数
    ulimit_=$(ulimit -u)
    #内核设置的最大进程数
    pid_max=$(sysctl kernel.pid_max | awk '{print $3}')

    echo -e "\n\033[32m################## 进程 相关 ############\033[0m\n"
    echo -e "\033[32m------------------------------------\033[0m"
    echo -e "|进程数量:\033[31m$procs       \033[0m"
    echo -e "\033[32m------------------------------------\033[0m"
    echo -e "|用户的最大进程数:\033[31m$ulimit_       \033[0m"
    echo -e "\033[32m------------------------------------\033[0m"
    echo -e "|内核设置的最大进程数:\033[31m$pid_max       \033[0m"
    echo -e "\033[32m------------------------------------\033[0m"

}

function network() {
    #获取网卡流量信息,接收|发送的数据流量,单位为字节(bytes)
    net_monitor=$(cat /proc/net/dev | tail -n +3 | awk 'BEGIN{ print "网卡名称 入站数据流量(bytes) 出站数据流量(bytes)"} {print $1,$2,$10}' | column -t)
    #获取暴露端口信息
    ip_port=$(ss -ntulpa)

     #本地IP地址列表
    localip=$(ip a s | awk '/inet /{print $2}' )


    echo -e "\n\033[32m################## 网络 相关 ############\033[0m\n"
    echo -e "|本地IP地址列表:"
    echo -e "\033[31m$localip    \033[0m"
    echo -e "\033[32m------------------------------------\033[0m"
    echo -e "|获取网卡流量信息:"
    echo -e "\033[31m$net_monitor           \033[0m"
    echo -e "\033[32m------------------------------------\033[0m"
    echo -e "|获取暴露端口信息:"
    echo -e "\033[31m$ip_port           \033[0m"
    echo -e "\033[32m------------------------------------\033[0m"

}

case $1 in
all)
    bash_os
    memory
    cpu
    disk_io
    procs
    network
    ;;
bash_os)
    bash_os
    ;;
memory)
    memory
    ;;
cpu)
    cpu
    ;;
disk_io)
    disk_io
    ;;
procs)
    procs
    ;;
network)
    network
    ;;
*)
    echo "Usage: bash_os|memory|cup|disk_io|procs|network|all"
    ;;

esac
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