今天看夜莺的实现时，开发人员调研了Telegraf的监控功能，它有测试功能，查看一下输出，刚好可以学习一下。
测试的命令
telegraf --config /etc/telegraf/telegraf.conf --test --input-filter xxx
其中的xxx为指标模块的名称，它要配合/etc/telegraf/telegraf.conf文件里的配置来生效的。
CPU
telegraf --config /etc/telegraf/telegraf.conf --test --input-filter cpu
2022-04-07T15:24:38Z I! Starting Telegraf 1.12.1
> cpu,cpu=cpu0,host=127.0.0.1localhostlocalhost.localdomainlocalhost4localhost usage_guest=0,usage_guest_nice=0,usage_idle=96.36363636291478,usage_iowait=0,usage_irq=0,usage_nice=0,usage_softirq=1.8181818181705434,usage_steal=0,usage_system=1.8181818181705434,usage_user=0 1649345079000000000
> cpu,cpu=cpu1,host=127.0.0.1localhostlocalhost.localdomainlocalhost4localhost usage_guest=0,usage_guest_nice=0,usage_idle=98.14814814650133,usage_iowait=0,usage_irq=0,usage_nice=0,usage_softirq=0,usage_steal=0,usage_system=1.851851851772318,usage_user=0 1649345079000000000
> cpu,cpu=cpu2,host=127.0.0.1localhostlocalhost.localdomainlocalhost4localhost usage_guest=0,usage_guest_nice=0,usage_idle=98.21428571266162,usage_iowait=0,usage_irq=0,usage_nice=0,usage_softirq=0,usage_steal=0,usage_system=1.7857142856939845,usage_user=0 1649345079000000000
> cpu,cpu=cpu3,host=127.0.0.1localhostlocalhost.localdomainlocalhost4localhost usage_guest=0,usage_guest_nice=0,usage_idle=100,usage_iowait=0,usage_irq=0,usage_nice=0,usage_softirq=0,usage_steal=0,usage_system=0,usage_user=0 1649345079000000000
> cpu,cpu=cpu4,host=127.0.0.1localhostlocalhost.localdomainlocalhost4localhost usage_guest=0,usage_guest_nice=0,usage_idle=98.18181818273219,usage_iowait=0,usage_irq=0,usage_nice=0,usage_softirq=0,usage_steal=0,usage_system=1.8181818182186489,usage_user=0 1649345079000000000
> cpu,cpu=cpu5,host=127.0.0.1localhostlocalhost.localdomainlocalhost4localhost usage_guest=0,usage_guest_nice=0,usage_idle=100,usage_iowait=0,usage_irq=0,usage_nice=0,usage_softirq=0,usage_steal=0,usage_system=0,usage_user=0 1649345079000000000
> cpu,cpu=cpu6,host=127.0.0.1localhostlocalhost.localdomainlocalhost4localhost usage_guest=0,usage_guest_nice=0,usage_idle=100,usage_iowait=0,usage_irq=0,usage_nice=0,usage_softirq=0,usage_steal=0,usage_system=0,usage_user=0 1649345079000000000
> cpu,cpu=cpu7,host=127.0.0.1localhostlocalhost.localdomainlocalhost4localhost usage_guest=0,usage_guest_nice=0,usage_idle=98.2456140359835,usage_iowait=0,usage_irq=0,usage_nice=0,usage_softirq=0,usage_steal=0,usage_system=1.754385964943948,usage_user=0 1649345079000000000
> cpu,cpu=cpu-total,host=127.0.0.1localhostlocalhost.localdomainlocalhost4localhost usage_guest=0,usage_guest_nice=0,usage_idle=99.08466819136623,usage_iowait=0,usage_irq=0,usage_nice=0,usage_softirq=0.2288329519451158,usage_steal=0,usage_system=0.6864988558301444,usage_user=0 1649345079000000000
内存
telegraf --config /etc/telegraf/telegraf.conf --test --input-filter mem
2022-04-07T15:25:45Z I! Starting Telegraf 1.12.1
> mem,host=127.0.0.1localhostlocalhost.localdomainlocalhost4localhost active=2521239552i,available=7199260672i,available_percent=86.02206110509124,buffered=1892352i,cached=6773923840i,commit_limit=12640256000i,committed_as=1937342464i,dirty=16384i,free=752144384i,high_free=0i,high_total=0i,huge_page_size=2097152i,huge_pages_free=0i,huge_pages_total=0i,inactive=4028149760i,low_free=0i,low_total=0i,mapped=135749632i,page_tables=6717440i,shared=17469440i,slab=731697152i,swap_cached=77824i,swap_free=8453877760i,swap_total=8455712768i,total=8369086464i,used=841125888i,used_percent=10.050390704148423,vmalloc_chunk=35184322805760i,vmalloc_total=35184372087808i,vmalloc_used=44560384i,wired=0i,write_back=0i,write_back_tmp=0i 1649345146000000000
硬盘
telegraf --config /etc/telegraf/telegraf.conf --test --input-filter disk
2022-04-07T15:26:34Z I! Starting Telegraf 1.12.1
> disk,device=dm-0,fstype=xfs,host=127.0.0.1localhostlocalhost.localdomainlocalhost4localhost,mode=rw,path=/ free=21807915008i,inodes_free=25593870i,inodes_total=26214400i,inodes_used=620530i,total=53660876800i,used=31852961792i,used_percent=59.35974902296043 1649345195000000000
> disk,device=sda1,fstype=xfs,host=127.0.0.1localhostlocalhost.localdomainlocalhost4localhost,mode=rw,path=/boot free=888115200i,inodes_free=523956i,inodes_total=524288i,inodes_used=332i,total=1063256064i,used=175140864i,used_percent=16.472124630177515 1649345195000000000
> disk,device=dm-2,fstype=xfs,host=127.0.0.1localhostlocalhost.localdomainlocalhost4localhost,mode=rw,path=/home free=43791339520i,inodes_free=21552825i,inodes_total=21557248i,inodes_used=4423i,total=44127686656i,used=336347136i,used_percent=0.7622133891178435 1649345195000000000
DiskIO
telegraf --config /etc/telegraf/telegraf.conf --test --input-filter diskio
2022-04-07T15:27:01Z I! Starting Telegraf 1.12.1
> diskio,host=127.0.0.1localhostlocalhost.localdomainlocalhost4localhost,name=sda io_time=213349i,iops_in_progress=0i,read_bytes=1654189056i,read_time=56161i,reads=45937i,weighted_io_time=3638216i,write_bytes=20150748160i,write_time=3582669i,writes=417560i 1649345221000000000
> diskio,host=127.0.0.1localhostlocalhost.localdomainlocalhost4localhost,name=sda1 io_time=46i,iops_in_progress=0i,read_bytes=6372864i,read_time=40i,reads=119i,weighted_io_time=52i,write_bytes=2168832i,write_time=12i,writes=13i 1649345221000000000
> diskio,host=127.0.0.1localhostlocalhost.localdomainlocalhost4localhost,name=sda2 io_time=95326i,iops_in_progress=0i,read_bytes=1646235136i,read_time=56102i,reads=45788i,weighted_io_time=3490849i,write_bytes=20148579328i,write_time=3435317i,writes=344594i 1649345221000000000
> diskio,host=127.0.0.1localhostlocalhost.localdomainlocalhost4localhost,name=dm-0 io_time=213449i,iops_in_progress=0i,read_bytes=1633369600i,read_time=55812i,reads=45466i,weighted_io_time=20991277i,write_bytes=20548803584i,write_time=20919826i,writes=576825i 1649345221000000000
> diskio,host=127.0.0.1localhostlocalhost.localdomainlocalhost4localhost,name=dm-1 io_time=150i,iops_in_progress=0i,read_bytes=2596864i,read_time=78i,reads=171i,weighted_io_time=2322i,write_bytes=7598080i,write_time=2244i,writes=1855i 1649345221000000000
> diskio,host=127.0.0.1localhostlocalhost.localdomainlocalhost4localhost,name=dm-2 io_time=75i,iops_in_progress=0i,read_bytes=8097792i,read_time=201i,reads=253i,weighted_io_time=256i,write_bytes=3983360i,write_time=55i,writes=123i 1649345221000000000
内核
telegraf --config /etc/telegraf/telegraf.conf --test --input-filter kernel
2022-04-07T15:29:20Z I! Starting Telegraf 1.12.1
> kernel,host=127.0.0.1localhostlocalhost.localdomainlocalhost4localhost boot_time=1649255076i,context_switches=149670025i,entropy_avail=3556i,interrupts=166434035i,processes_forked=2386968i 1649345360000000000
系统
telegraf --config /etc/telegraf/telegraf.conf --test --input-filter system
2022-04-07T15:29:37Z I! Starting Telegraf 1.12.1
> system,host=127.0.0.1localhostlocalhost.localdomainlocalhost4localhost load1=0.27,load15=0.16,load5=0.19,n_cpus=8i,n_users=4i 1649345378000000000
> system,host=127.0.0.1localhostlocalhost.localdomainlocalhost4localhost uptime=90301i 1649345378000000000
> system,host=127.0.0.1localhostlocalhost.localdomainlocalhost4localhost uptime_format="1 day, 1:05" 1649345378000000000
进程
telegraf --config /etc/telegraf/telegraf.conf --test --input-filter processes
2022-04-07T15:29:42Z I! Starting Telegraf 1.12.1
> processes,host=127.0.0.1localhostlocalhost.localdomainlocalhost4localhost blocked=0i,dead=0i,idle=0i,paging=0i,running=0i,sleeping=167i,stopped=0i,total=167i,total_threads=291i,unknown=0i,zombies=0i 1649345383000000000
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