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I'm using haproxy 1.6.8.

The following information is output on 

echo "show sess" | nc -U /var/lib/haproxy/stats 


0x1696d40: proto=tcpv4 src=67.55.94.187:51183 fe=adf be=adfback srv=capped ts=08 age=0s calls=4 rq[f=8400a0h,i=0,an=2000h,rx=,wx=,ax=] rp[f=400000h,i=0,an=60000h,rx=59s,wx=,ax=] s0=[7,8h,fd=186,ex=] s1=[7,108h,fd=209,ex=] exp=59s
0x17d4dd0: proto=tcpv4 src=173.239.36.124:19785 fe=adf be=adfback srv=capped2 ts=08 age=0s calls=4 rq[f=8400a0h,i=0,an=2000h,rx=,wx=,ax=] rp[f=400000h,i=0,an=60000h,rx=59s,wx=,ax=] s0=[7,8h,fd=100,ex=] s1=[7,108h,fd=246,ex=] exp=59s
0x16f7fc0: proto=tcpv4 src=67.55.94.183:54971 fe=adf be=adfback srv=capped ts=08 age=0s calls=4 rq[f=8400a0h,i=0,an=2000h,rx=,wx=,ax=] rp[f=400000h,i=0,an=60000h,rx=59s,wx=,ax=] s0=[7,8h,fd=168,ex=] s1=[7,108h,fd=288,ex=] exp=59s
0x1a8b170: proto=tcpv4 src=67.55.94.182:18194 fe=adf be=adfback srv=capped ts=08 age=0s calls=4 rq[f=8400a0h,i=0,an=2000h,rx=,wx=,ax=] rp[f=400000h,i=0,an=60000h,rx=59s,wx=,ax=] s0=[7,8h,fd=45,ex=] s1=[7,108h,fd=299,ex=] exp=59s

How can I interpret that data? Is there any docs on that?

rlib
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1 Answers1

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According to the official documentation:

show sess Dump all known sessions. Avoid doing this on slow connections as this can be huge. This command is restricted and can only be issued on sockets configured for levels "operator" or "admin".

show sess Display a lot of internal information about the specified session identifier. This identifier is the first field at the beginning of the lines in the dumps of "show sess" (it corresponds to the session pointer). Those information are useless to most users but may be used by haproxy developers to troubleshoot a complex bug. The output format is intentionally not documented so that it can freely evolve depending on demands. You may find a description of all fields returned in src/dumpstats.c

The special id "all" dumps the states of all sessions, which must be avoided as much as possible as it is highly CPU intensive and can take a lot of time.

Florin Asăvoaie
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