1.启动-需指定配置文件
/usr/bin/telegraf --config /etc/telegraf/cpu.conf
2.配置文件
（1）agent
[agent]
logfile = "/var/log/telegraf/telegraf.log"
logfile_rotation_max_size = "10MB"
logfile_rotation_max_archives = 5
log_with_timezone = "local"
round_interval = true
interval = "1m"
collection_jitter = "15s"
flush_interval = "15s"
flush_jitter = "5s"
collection_jitter: Collection jitter is used to jitter the collection by a random interval. Each plugin will sleep for a random time within jitter before collecting. This can be used to avoid many plugins querying things like sysfs at the same time, which can have a measurable effect on the system.
flush_interval: Default flushing interval for all outputs. Maximum flush_interval will be flush_interval + flush_jitter.
flush_jitter: Default flush jitter for all outputs. This jitters the flush interval by a random amount. This is primarily to avoid large write spikes for users running a large number of telegraf instances. ie, a jitter of 5s and interval 10s means flushes will happen every 10-15s.
（2）global_tags 自定义的全局tags
[global_tags]
idc = "xiongan02"
alert_tag = "11.0.96.125"
service_tree="untube_virtual_network_element_elb"
（3）outputs.http 可直接推送到prometheusremote
[[outputs.http]]
#url = "http://13.0.127.248:9091/metrics/job/lb_telegraf_job"
url = "http://11.0.103.248:9090/api/v1/write"
data_format="prometheusremotewrite"
data_format = "prometheus"
（4）[[processors.rename]] 可修改指标名称以及tag
[[processors.replace]]
[[processors.replace.rename]]
measurement = "ping"
measurement_dest = "probe"
field = "result_code"
field_dest = "success"
[[processors.rename.replace]]
measurement = "network_interface_throughput"
dest = "throughput"
[[processors.rename.replace]]
tag = "hostname"
dest = "host"
[[processors.rename.replace]]
field = "lower"
dest = "min"
[[processors.rename.replace]]
field = "upper"
dest = "max"
（5）
[[inputs.mem]]
fieldpass= ["",]
[[inputs.procstat]]
pattern="named"
pid_tag = true
[[inputs.procstat]]
pattern="nginx"
pid_tag = true
