smokeping with tcpping centos 7 环境

本次环境采用centos7，使用centos6的同学就洗洗睡吧，此外一定要做好时间同步，并且关闭防火墙以及selinux，不然安装可能会失败的哦。
时间同步方式如下：

yum install ntpdate -y
ntpdate times.aliyun.com

　　

安装依赖：

yum groupinstall "Compatibility libraries" "Base" "Development tools" -y    #很多同学在装系统的时候选择包有问题，因此安装这些保证环境一致性
yum install -y perl perl-Net-Telnet perl-Net-DNS perl-LDAP perl-libwww-perl perl-IO-Socket-SSL perl-Socket6 perl-Time-HiRes perl-ExtUtils-MakeMaker rrdtool rrdtool-perl curl  httpd httpd-devel gcc make  wget libxml2-devel libpng-devel glib pango pango-devel freetype freetype-devel fontconfig cairo cairo-devel libart_lgpl libart_lgpl-devel perl-CGI-SpeedyCGI perl-Sys-Syslog popt-devel libidn-devel fping
yum install perl-core

　　

安装tcpping：

cd /usr/bin
wget http://www.vdberg.org/~richard/tcpping
chmod 755 tcpping

　　

该tcpping是bash脚本写的，不过有点问题，后续会教你怎么改

安装smokeping：

wget https://oss.oetiker.ch/smokeping/pub/smokeping-2.7.1.tar.gz
tar -xf smokeping-2.7.1.tar.gz
cd smokeping-2.7.1
./configure --prefix=/opt/smokeping
make install

　　

修改配置：

cd /usr/local/smokeping/
mkdir cache data var
chown apache:apache cache data var
chown apache:apache /var/log/smokeping.log
chmod 600 /usr/local/smokeping/etc/smokeping_secrets.dist
cd /usr/local/smokeping/htdocs
mv smokeping.fcgi.dist smokeping.fcgi
cd /usr/local/smokeping/etc
mv config.dist config

　　

编辑config：

*** Probes ***

+TCPPing

binary = /usr/bin/tcpping # mandatory
forks = 5
offset = 50%
step = 60
timeout = 15

# The following variables can be overridden in each target section
pings = 20
port = 80

# [...]

*** Targets ***

probe = TCPPing # if this should be the default probe
menu = Top
title = Network Latency Grapher
remark = Welcome to the SmokePing website of xxx Company. \
         Here you will learn all about the latency of our network.

# [...]

+ mytarget
probe = TCPPing # if the default probe is something else
menu = baidu.com
title = baidu.com
host = www.baidu.com
pings = 20
port = 80

　　

apache配置修改：

Alias /cache "/opt/smokeping/cache/"
Alias /cropper "/opt/smokeping/htdocs/cropper/"
Alias /smokeping "/opt/smokeping/htdocs/smokeping.fcgi"
Alias /css "/opt/smokeping/htdocs/css/"
Alias /js "/opt/smokeping/htdocs/js/"
<Directory "/opt/smokeping">
AllowOverride None
Options All
AddHandler cgi-script .fcgi .cgi
Order allow,deny
Allow from all
Require all granted
DirectoryIndex smokeping.fcgi
</Directory>

　　

启动smokeping，重启apache

自此，smokeping结合tcpping就安装完成了。不过你过儿会发现啥数据都没有，这是因为tcptraceroute包改变了所导致的。我从网上看到别人的tcpping结果应该是：

$ tcpping www.cisco.com
seq 0: tcp response from www.cisco.com (198.133.219.25) [open]  155.513 ms
seq 1: tcp response from www.cisco.com (198.133.219.25) [open]  148.907 ms
seq 2: tcp response from www.cisco.com (198.133.219.25) [open]  153.686 ms
seq 3: tcp response from www.cisco.com (198.133.219.25) [open]  150.864 ms
seq 4: tcp response from www.cisco.com (198.133.219.25) [open]  147.917 ms

　　

我的：

 $ tcpping www.baidu.com
traceroute to www.baidu.com (180.97.33.108), 255 hops max, 60 byte packets
seq 0: tcp response from 180.97.33.108 (180.97.33.108) <syn,ack>  8.159 ms
traceroute to www.baidu.com (180.97.33.107), 255 hops max, 60 byte packets
seq 1: tcp response from 180.97.33.107 (180.97.33.107) <syn,ack>  8.288 ms
traceroute to www.baidu.com (180.97.33.108), 255 hops max, 60 byte packets
seq 2: tcp response from 180.97.33.108 (180.97.33.108) <syn,ack>  8.112 ms
traceroute to www.baidu.com (180.97.33.108), 255 hops max, 60 byte packets
seq 3: tcp response from 180.97.33.108 (180.97.33.108) <syn,ack>  8.160 ms
traceroute to www.baidu.com (180.97.33.107), 255 hops max, 60 byte packets
seq 4: tcp response from 180.97.33.107 (180.97.33.107) <syn,ack>  8.484 ms

　　

发觉我多了一行traceroute to …，怪不得没数据，这里需要修改tcpping的脚本：

vi /usr/bin/tcpping
ttr=`tcptraceroute -f ${ttl} -m ${ttl} -q ${q} -w ${w} $*  2>&1`
改成
ttr=`tcptraceroute -f ${ttl} -m ${ttl} -q ${q} -w ${w} $* |grep -v traceroute 2>&1`

ttr=`tcptraceroute -f ${ttl} -m ${ttl} -q ${q} -w ${w} $*  2>/dev/null`
改成
ttr=`tcptraceroute -f ${ttl} -m ${ttl} -q ${q} -w ${w} $* |grep -v traceroute 2>/dev/null`

　　

重启smokeping后你发现有数据了，可是为啥延迟都是恒定的255ms呢，这里又牵涉到另一个smokeping的bug了，这个bug十年前就有了，作者一直没修改，链接：http://norman.rasmussen.co.za/62/tcpping-and-smokeping/

你会发现你用tcpping -C -x 1 www.baidu.com 80 永远返回是255，这就是问题。

照着如下修改：

vi /usr/bin/tcpping
rtt=`echo "${ttr}" | sed 's/.*] //' | awk '{print $1}'`
改成
rtt=`echo "${ttr}" | sed 's/.*] //' | awk '{print $5}'`

　　

再重启下smokeping，好了一切正常了