“ 目录RHCA - 12 系统监控 - 10 pcp工具监控系统 ”一、安装可监控非常多的系统数据[rootwuzuniao ~]# yum -y install pcp pcp-gui #安装工具和图形化界面[rootwuzuniao ~]# systemctl enable pmcd --now #立即启动并加入开机自启Created symlink /etc/systemd/system/multi-user.target.wants/pmcd.service → /usr/lib/systemd/system/pmcd.service.[rootwuzuniao ~]# systemctl status pmcd #查看服务状态● pmcd.service - Performance Metrics Collector DaemonLoaded: loaded (/usr/lib/systemd/system/pmcd.service; enabled; vendor preset: disabled)Active: active (running) since Tue 2025-07-01 15:57:23 CST; 9s agoDocs: man:pmcd(8)Process: 21173 ExecStart/usr/share/pcp/lib/pmcd start (codeexited, status0/SUCCESS)Main PID: 21253 (pmcd)Tasks: 7 (limit: 5939)Memory: 18.1MCGroup: /system.slice/pmcd.service├─21253 /usr/libexec/pcp/bin/pmcd├─21258 /var/lib/pcp/pmdas/root/pmdaroot├─21259 /var/lib/pcp/pmdas/proc/pmdaproc -d 3├─21260 /var/lib/pcp/pmdas/xfs/pmdaxfs -d 11├─21261 /var/lib/pcp/pmdas/linux/pmdalinux└─21262 /var/lib/pcp/pmdas/kvm/pmdakvm -d 957月 01 15:57:23 wuzuniao systemd[1]: Starting Performance Metrics Collector Daemon...7月 01 15:57:23 wuzuniao pmcd[21173]: Starting pmcd ...7月 01 15:57:23 wuzuniao systemd[1]: Started Performance Metrics Collector Daemon.[rootwuzuniao ~]#二、查看查看所有可监控的指标语法格式pminfo [参数] [指标]参数作用-d查看描述信息-t查看类型[rootwuzuniao ~]# pminfo #查看所有可监控的指标jbd2.njournalsjbd2.transaction.count#省略非常多内容总2千多条[rootwuzuniao ~]# pminfo -dt disk.all.write_bytes #查看单个参数描述信息和类型disk.all.write_bytes [count of bytes written for all disk devices]Data Type: 32-bit unsigned int InDom: PM_INDOM_NULL 0xffffffffSemantics: counter Units: Kbyte[rootwuzuniao ~]#三、使用监控系统语法格式pmval [参数] [指标]参数作用-v查看详细信息-a指定文件查看里面的监控指标信息1、命令行[rootwuzuniao ~]# pmval -v disk.all.write_bytes #监控每秒的写入字节数metric: disk.all.write_byteshost: wuzuniaosemantics: cumulative counter (converting to rate)units: Kbyte (converting to Kbyte / sec)samples: all0.00.00.011.990.054.950.00.027.97^C[rootwuzuniao ~]#2、图形界面[rootwuzuniao ~]# pmchart #后台运行进程来打开图形监控界面点击左上角新建 - 新窗口中选择需要的指标 - 点击向左的绿色箭头添加 - 点击OK然后就能查看到图形化的监控界面了