centos7.6安装bcc-tools

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centos7.6安装bcc-tools

1. centos7.6升级到最新内核

   # 升级系统
   yum update -y
   
   # 安装 ELRepo
   rpm --import https://www.elrepo.org/RPM-GPG-KEY-elrepo.org
   rpm -Uvh https://www.elrepo.org/elrepo-release-7.0-3.el7.elrepo.noarch.rpm
   
   # 安装新内核
   yum remove -y kernel-headers kernel-tools kernel-tools-libs
   yum --enablerepo="elrepo-kernel" install -y kernel-ml kernel-ml-devel kernel-ml-headers kernel-ml-tools kernel-ml-tools-libs kernel-ml-tools-libs-devel
   
   # 更新 Grub 后重启
   grub2-mkconfig -o /boot/grub2/grub.cfg
   awk -F\' '$1=="menuentry " {print i++ " : " $2}' /etc/grub2.cfg
   grub2-set-default 0
   reboot
   
   # 查看当前设置
   grub2-editenv list
   
   # 重启后确认内核版本已升级为最新版
   uname -r
   
   

   
   

2. 安装bcc-tools，不要yum安装！不要yum安装！不要yum安装！重要的事情说3遍

   ## 参考github官方地址:https://github.com/iovisor/bcc
   ## 
   sudo yum install -y epel-release
   sudo yum update -y
   sudo yum groupinstall -y "Development tools"
   sudo yum install -y elfutils-libelf-devel cmake3 git bison flex ncurses-devel
   sudo yum install -y luajit luajit-devel  # for Lua support
   
   
   ## 
   yum install -y centos-release-scl
   yum-config-manager --enable rhel-server-rhscl-7-rpms
   yum install -y devtoolset-7 llvm-toolset-7 llvm-toolset-7-llvm-devel llvm-toolset-7-llvm-static llvm-toolset-7-clang-devel
   source scl_source enable devtoolset-7 llvm-toolset-7
   
   ## 注意这里官网有坑，不要直接git clone，可能文件不全
   ## 直接下载tar.gz包
   wget https://github.com/iovisor/bcc/releases/download/v0.23.0/bcc-src-with-submodule.tar.gz
   tar -xzvf bcc-src-with-submodule.tar.gz
   mkdir bcc/build; cd bcc/build
   cmake3 ..
   make
   sudo make install
   ## 加上这个配置
   vi /etc/profile
   source scl_source enable devtoolset-7 llvm-toolset-7
   
   
   ## 测试，大功告成
   cd /usr/share/bcc/tools/
   ./cachestat