varnish-4.x 之varnishlog,varnishstat,varnishtop,varnishhist

varnish-4.x 之varnishlog,varnishstat,varnishtop,varnishhist

varnishlog

man varnishlog

man vsl

man vsl-query

数据流groups

-g  session | request | vxid | raw

• Transaction groups are hierarchical

• Levels are equal to relationships (parents and children):

Level 1: Client request (cache miss)

  Level 2: Backend request

  Level 2: ESI subrequest (cache miss)

    Level 3: Backend request

    Level 3: Backend request (VCL restart)

    Level 3: ESI subrequest (cache miss)

      Level 4: Backend request

  Level 2: ESI subrequest (cache hit)

varnishlog支持丰富的查询语句

• string matching, e.g.: RespProtocol eq "HTTP/1.1"

• regex, e.g.: ReqMethod ~ "GET|POST"

• integer and float matching, e.g.: RespStatus == 200

• boolean operators, e.g.: RespStatus >= 500 and RespStatus < 600

• parenthesis hierarchy

• negation using not

示例：

varnishlog -g request -i Begin,Link -d

varnishlog -q 'RespStatus < 500'

varnishlog -g request -q 'ReqURL eq "/"'

varnishlog -g request -q 'Backend ~ default'

varnishlog -g request -i ReqHeader,RespHeader

varnishstat

varnishstat -f MAIN.client_req -f MAIN.cache_hit

Column Description

Name The name of the counter

Current The current value of the counter.

Change The average per second change over the last update interval.

Average The average value of this counter over the runtime of the Varnish daemon, or a

period if the counter can't be averaged.

Avg_10 The moving average over the last 10 update intervals.

Avg_100 The moving average over the last 100 update intervals.

Avg_1000 The moving average over the last 1000 update intervals.

varnishtop


varnishhist