Telegraf 采集 CPU 数据

一、配置文件

进入到如下的配置文件

[root@localhost ~]# vim /etc/telegraf/telegraf.conf

[global_tags]

[agent]

#收集数据的间隔
interval = "10s"

round_interval = true

metric_batch_size = 1000

metric_buffer_limit = 10000

collection_jitter = "0s"

#写入inflxdb的时间间隔

flush_interval = "10s"

flush_jitter = "0s"

precision = ""

debug = false

quiet = false

#日志路径

logfile = "/data/log/telegraf.log"

hostname = ""

omit_hostname = false

[[outputs.influxdb]]

urls = ["http://192.168.227.56:8086"]

database = "telegraf"

username = "admin"

password = "123456"

[[inputs.cpu]]

#是否采集每个CPU的数据

percpu = false

#是否采集总CPU的数据

totalcpu = true

collect_cpu_time = false

report_active = false

二、启动Telegraf

[root@localhost data]# systemctl start telegraf.service

[root@localhost data]# service telegraf status

开机启动

[root@localhost data]# systemctl enable telegraf.service

三、在inflxdb验证数据（inflxdb数据库所在的机器）

[root@localhost ~]# influx -username 'admin' -password '123456' -database telegraf

select * from cpu limit 3

name: cpu

time cpu host usage_guest usage_guest_nice usage_idle usage_iowait usage_irq usage_nice usage_softirq usage_steal usage_system usage_user

1598452090000000000 cpu-total localhost.localdomain 0 0 97.93294681121132 0.17645576002015695 0.15124779430301213 0 0.07562389715150607 0 0.8822788001008564 0.7814469372322055

1598452090000000000 cpu0 localhost.localdomain 0 0 98.58870967742497 0 0.20161290322583764 0 0 0 0.5040322580645762 0.7056451612904496

1598452090000000000 cpu1 localhost.localdomain 0 0 98.5901309164208 0 0.10070493454176956 0 0.10070493454178744 0 0.5035246727089193 0.70493454179253

四、在grafana展示监控CPU的数据

点击设置选择“data sources"

配置数据源

创建面板

点击new dashboard按钮

点击Graph图标

点击“edit”按钮

选择数据源

添加需要关注的指标值：

百分比占用显示：

五、选择保存默认项

[root@localhost telegraf]# vim /etc/telegraf/telegraf.conf

对CPU只采集的监控项

fieldpass = ["usage_user","usage_idle", "usage_iowait", "usage_system"]

重启telegraf

[root@localhost telegraf]# systemctl restart telegraf

六、在inflxdb上面重新采集数据

[root@localhost ~]# influx -username 'admin' -password '123456' -database telegraf

use telegraf;

drop measurement cpu;

选择刷新频率和线上的时间段

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