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#!/usr/bin/ruby -w

require 'socket'

ctl=UNIXSocket.new("/tmp/proxystats")

ctl.puts "#{ARGV}"

while (line = ctl.gets) do
  puts line

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wet:~# chmod +x proxyctl
wet:~# ./proxyctl help
Unknown command. Please enter one of the following commands only :
clear counters : clear max statistics counters (add 'all' for all counters) help : this message prompt : toggle interactive mode with prompt quit : disconnect show info : report information about the running process show stat : report counters for each proxy and server show errors : report last request and response errors for each proxy show sess [id] : report the list of current sessions or dump this session get weight : report a server's current weight set weight : change a server's weight set timeout : change a timeout setting disable server : set a server in maintenance mode enable server : re-enable a server that was previously in maintenance mode

wet:~#
wet:~# # who's connected
wet:~# ./proxyctl "show sess"
0x8111a70: proto=tcpv4 src=82.41.169.69:49837 fe=http be=static srv=nginx_stellatus ts=04 age=1m1s calls=6 rq[f=1901000h,l=0,an=800h,rx=,wx=,ax=] rp[f=110010h,l=8030,an=100000h,rx=,wx=5

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wet:~# # remove a server from the rotation.  takes the argument of backend/server
wet:~# ./proxyctl "disable server static/nginx_stellatus" 
wet:~# 
wet:~# # let's see the status of that server now.  MAINT is, as you'd expect, maintenance mode
wet:~# ./proxyctl "show stat" |grep -i nginx_stellatus
static,nginx_stellatus,0,0,0,3,,966,368345,253599033,,0,,0,0,0,0,MAINT,1,1,0,1,0,297143,0,,1,4,3,,966,,2,0,,5,INI,,0,0,847,49,70,0,0,0,,,,124,1,

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wet:~# ./proxyctl "clear counters"

wet:~# ./proxyctl "show stat" 
# pxname,svname,qcur,qmax,scur,smax,slim,stot,bin,bout,dreq,dresp,ereq,econ,eresp,wretr,wredis,status,weight,act,bck,chkfail,chkdown,lastchg,downtime,qlimit,pid,iid,sid,throttle,lbtot,tracked,type,rate,rate_lim,rate_max,check_status,check_code,check_duration,hrsp_1xx,hrsp_2xx,hrsp_3xx,hrsp_4xx,hrsp_5xx,hrsp_other,hanafail,req_rate,req_rate_max,req_tot,cli_abrt,srv_abrt,
http,FRONTEND,,,0,0,5000,60,39346,20559128,0,0,2,,,,,OPEN,,,,,,,,,1,1,0,,,,0,0,0,0,,,,0,73,22,4,0,0,,0,0,99,,,
apache,wet,0,0,0,0,,2,853,2348,,0,,0,0,0,0,UP,1,1,0,0,0,5748,0,,1,2,1,,2,,2,0,,0,L4OK,,0,0,2,0,0,0,0,0,,,,0,0,
apache,BACKEND,0,0,0,0,0,2,853,2348,0,0,,0,0,0,0,UP,1,1,0,,0,5748,0,,1,2,0,,2,,1,0,,0,,,,0,2,0,0,0,0,,,,,0,0,
sinatra,sinatra_downoi,0,0,0,0,,5,2640,15872,,0,,0,0,0,0,UP,1,1,0,0,0,5748,0,,1,3,1,,5,,2,0,,0,L4OK,,46,0,5,0,0,0,0,0,,,,0,0,
sinatra,sinatra_rindica,0,0,0,0,,4,2168,9054,,0,,0,0,0,0,UP,1,1,0,0,0,5748,0,,1,3,2,,4,,2,0,,0,L4OK,,46,0,3,0,1,0,0,0,,,,0,0,

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backend static
	balance leastconn
	mode http
	option http-server-close
        #ensures / returns with a 200 OK 
	option httpchk 
	# these are small cheap nginx boxes listening on http
	server ngnix_downoi downoi.mysite.com:80 check inter 60s rise 5 fall 2 
	server ngnix_rindica r.indica.mysite.com:80 check inter 60s rise 5 fall 2
	server nginx_stellatus p.stellatus.mysite.com:80 check inter 60s rise 5 fall 2

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backend sinatra
        balance leastconn
        mode http
        option http-server-close
        option httpchk
        server sinatra_downoi downoi.mysite.com:4567 check inter 60s rise 5 fall 2
        server sinatra_rindica r.indica.mysite.com:4567 check inter 60s rise 5 fall 2
        server sinatra_wet wet.mysite.com:4567 check inter 60s rise 5 fall 2

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backend apache
	balance source
	mode http
	option http-server-close
	server wet 127.0.0.1:8080 

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frontend http
	bind :80
	mode http
	option http-server-close
	retries	3
	option redispatch
	maxconn	5000

        # 120,000 ms is 2 minutes
	contimeout 120000

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global 
	log 127.0.0.1 local0 notice 
	maxconn 5000 
	daemon 
	stats socket /tmp/proxystats level admin	# we'll use this guy to do stuff.

defaults 
	log global 
	mode http 
	option httplog 

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# count DOWN servers by first excluding the key, frontends, and any servers that aren't "up"
# if DOWN servers exist, email the admin

wet:~# DOWN=$(./proxyctl "show stat" |egrep -v '^#|no check|FRONTEND|UP'); if [ ${#DOWN} -gt 0 ]; then echo $DOWN |mail -s "oh snap" admin@mysite.com; fi

# add it to the cron for every 5 minutes

wet:~# crontab -e
no crontab for root - using an empty one
crontab: installing new crontab