一、安装 1、centos下的安装 1.1一键安装 curl -s https://s3.amazonaws.com/download.draios.com/stable/install-sysdig | sudo bash 1.2、分步安装 #导入draios源 rpm --import https://s3.amazonaws.com/download.draios.com/DRAIOS-GPG-KEY.public curl -s -o /etc/yum.repos.d/draios.repo http://download.draios.com/stable/rpm/draios.repo #导入epel 源 rpm -i http://mirror.us.leaseweb.net/epel/6/x86_64/epel-release-6-8.noarch.rpm #装包 yum -y install kernel-devel* dkms sysdig #最后执行 sysdig-probe-loader 2、ubuntu下的安装 curl -s https://s3.amazonaws.com/download.draios.com/DRAIOS-GPG-KEY.public | apt-key add - curl -s -o /etc/apt/sources.list.d/draios.list http://download.draios.com/stable/deb/draios.list apt-get update apt-get -y install linux-headers-$(uname -r) apt-get -y install sysdig 二、常用用法 1、网络 查看占用网络带宽最多的进程： sysdig -c topprocs_net 示主机192.168.0.1的网络传输数据： as binary: sysdig -s2000 -X -c echo_fds fd.cip=192.168.0.1 as ASCII: sysdig -s2000 -A -c echo_fds fd.cip=192.168.0.1 查看连接最多的服务器端口： in terms of established connections: sysdig -c fdcount_by fd.sport "evt.type=accept" in terms of total bytes: sysdig -c fdbytes_by fd.sport 查看客户端连接最多的ip： in terms of established connections sysdig -c fdcount_by fd.cip "evt.type=accept" in terms of total bytes sysdig -c fdbytes_by fd.cip 列出所有不是访问apache服务的访问连接： sysdig -p"%proc.name %fd.name" "evt.type=accept and proc.name!=httpd" 2、硬盘 I/O 查看使用硬盘带宽最多的进程： sysdig -c topprocs_file 列出使用大量文件描述符的进程 sysdig -c fdcount_by proc.name "fd.type=file" See the top files in terms of read+write bytes sysdig -c topfiles_bytes Print the top files that apache has been reading from or writing to sysdig -c topfiles_bytes proc.name=httpd Basic opensnoop: snoop file opens as they occur sysdig -p "%12user.name %6proc.pid %12proc.name %3fd.num %fd.typechar %fd.name" evt.type=open See the top directories in terms of R+W disk activity sysdig -c fdbytes_by fd.directory "fd.type=file" See the top files in terms of R+W disk activity in the /tmp directory sysdig -c fdbytes_by fd.filename "fd.directory=/tmp/" Observe the I/O activity on all the files named 'passwd' sysdig -A -c echo_fds "fd.filename=passwd" Display I/O activity by FD type sysdig -c fdbytes_by fd.type 3、进程和CPU使用率 See the top processes in terms of CPU usage sysdig -c topprocs_cpu See the top processes for CPU 0 sysdig -c topprocs_cpu evt.cpu=0 Observe the standard output of a process sysdig -s4096 -A -c stdout proc.name=cat 4、应用 查看机器所有的HTTP请求 sudo sysdig -s 2000 -A -c echo_fds fd.port=80 and evt.buffer contains GET 查看机器所有的SQL select查询 sudo sysdig -s 2000 -A -c echo_fds evt.buffer contains SELECT See queries made via apache to an external MySQL server happening in real time sysdig -s 2000 -A -c echo_fds fd.sip=192.168.30.5 and proc.name=apache2 and evt.buffer contains SELECT 5、性能和错误 See the files where most time has been spent sysdig -c topfiles_time See the files where apache spent most time sysdig -c topfiles_time proc.name=httpd See the top processes in terms of I/O errors sysdig -c topprocs_errors See the top files in terms of I/O errors sysdig -c topfiles_errors See all the failed disk I/O calls sysdig fd.type=file and evt.failed=true See all the failed file opens by httpd sysdig "proc.name=httpd and evt.type=open and evt.failed=true" See the system calls where most time has been spent sysdig -c topscalls_time See the top system calls returning errors sysdig -c topscalls "evt.failed=true" snoop failed file opens as they occur sysdig -p "%12user.name %6proc.pid %12proc.name %3fd.num %fd.typechar %fd.name" evt.type=open and evt.failed=true Print the file I/O calls that have a latency greater than 1ms: sysdig -c fileslower 1 6、安全 Show the directories that the user "root" visits sysdig -p"%evt.arg.path" "evt.type=chdir and user.name=root" Observe ssh activity sysdig -A -c echo_fds fd.name=/dev/pretmx and proc.name=sshd Show every file open that happens in /etc sysdig evt.type=open and fd.name contains /etc Show the ID of all the login shells that have launched the "tar" command sysdig -r file.scap -c list_login_shells tar Show all the commands executed by the login shell with the given ID sysdig -r trace.scap.gz -c spy_users proc.loginshellid=5459 7、容器 查看机器上运行的容器列表及其资源使用情况 sudo csysdig -vcontainers 查看容器上下文的进程列表 sudo csysdig -pc 查看运行在wordpress1容器里CPU的使用率 sudo sysdig -pc -c topprocs_cpu container.name=wordpress1 查看运行在wordpress1容器里网络带宽的使用率 sudo sysdig -pc -c topprocs_net container.name=wordpress1 查看在wordpress1容器里使用网络带宽最多的进程 sudo sysdig -pc -c topprocs_net container.name=wordpress1 查看在wordpress1 容器里占用 I/O 字节最多的文件 sudo sysdig -pc -c topfiles_bytes container.name=wordpress1 查看在wordpress1 容器里网络连接的排名情况 sudo sysdig -pc -c topconns container.name=wordpress1 显示wordpress1容器里所有命令执行的情况 sudo sysdig -pc -c spy_users container.name=wordpress1 三、csysdig交互式处理 在sysdig包里还提供了一个工具 csysdig ，该工具执行后，效果和top命令类似