IPv6 DNS主機Smokeping 監測 電算中心呂芳發 2011年11月12日

大綱 Smokeping 簡介 Smokeping 安裝 Config 設定檔說明 結論

SmokePing簡介 SmokePing 用來從外部檢測服務系統的latency ，用 Perl 可以快速自製檢測工具，並自動存成 RRDTool DB 與圖檔，內建的 Alert 支援 Real-Time Traffic Pattern Detection，可以非常有彈性的用以自定警報通知。

SmokePing特性 跟蹤網絡延遲(latency)。 延遲(latency)視覺化管理工具。 圖形資源管理。 可彈性加入延遲測量工具。 可配置警報系統。 “有趣”的圖形延遲圖表。 免費軟體

如何看 Smokeping 圖 藉著發送測試數據封包量測往返時間。 對於每一cycle測量 smokeping發送多個數據封包。 在各種不同的往返時間，選擇中位數（即中間的一個）。 即當有10時間值，選擇第5個時間值繪製, 其他值繪製成連續的灰色色調的背景。 Data packets loss , 以不同顏色表示掉封包比率。

如何看 Smokeping 圖-簡圖 AV MD AV LS AV SD AM / AS 平均中位數 平均損失 在每一輪的多次測量的平均標準偏差 AM / AS 平均中位數和平均標準差的比率

如何看 Smokeping 圖-詳細圖 AVG，MAX，MIN，now SD am/ S 平均，最高，最低，目前的中位數 標準差中位數 平均中位數與標準差的比率

Smokeping install Smokeping是用perl所寫的程序，不需要安裝。 用perl所寫，需要使用到一些工具像是rrdtool、fping、libwww-perl等，以及perl的module。需要先安裝好，當Smokeping 服務啟動時會自動簡查所需要的程序是否都安裝完成。

Smokeping install using CentOS 5.7 # yum update # rpm -Uhv http://apt.sw.be/redhat/el5/en/i386/rpmforge/RPMS/rpmforge-release-0.3.6-1.el5.rf.i386.rpm # yum install httpd # yum install rrdtool # yum install fping # yum install echoping # yum install curl # yum install perl perl-Net-Telnet perl-Net-DNS perl-libwww-perl perl-IO-Socket-SSL perl-Socket6 perl-CGI-SpeedyCGI

Smokeping install Use the FPing6 probe Download fping6 : wget http://unfix.org/projects/ipv6/fping-2.4b2_to-ipv6.tar.gz tar xvzf fping-2.4b2_to-ipv6.tar.gz cd fping-2.4b2_to-ipv6 configure make make install

Smokeping install # wget http://oss.oetiker.ch/smokeping/pub/smokeping-2.4.1.tar.gz # tar zxvf smokeping-2.4.1.tar.gz # mv smokeping-2.4.1 /opt/smokeping # cd /opt/smokeping # cd bin/ # cp smokeping.dist smokeping # cd ../htdocs/ # cp smokeping.cgi.dist smokeping.cgi

Smokeping install # cp tr.cgi.dist tr.cgi # cd ../etc/ # cp config.dist config # cp basepage.html.dist basepage.html # cp smokemail.dist smokemail # cp tmail.dist tmail # cp smokeping_secrets.dist smokeping_secrets # chmod 600 /opt/smokeping/etc/smokeping_secrets

Smokeping install # vi /opt/smokeping/bin/smokeping Replace this: 1 2 3 4 5 6 7 8 9 #!/usr/sepp/bin/perl-5.8.4 -w # -*-perl-*-   use lib qw(/usr/pack/rrdtool-1.2.23-mo/lib/perl); use lib qw(lib); use Smokeping 2.004000; Smokeping::main("etc/config.dist"); With This: 1 2 3 4 5 6 7 8 9 #!/usr/bin/perl -w # -*-perl-*-   use lib qw(/usr/lib/perl5/vendor_perl/5.8.8/i386-linux-thread-multi/auto/RRDs/); use lib qw(/opt/smokeping/lib); use Smokeping 2.004000; Smokeping::main("/opt/smokeping/etc/config");

Smokeping install # vi /opt/smokeping/htdocs/smokeping.cgi Replace this: 1 2 3 4 5 6 7 8 9 10 #!/usr/sepp/bin/speedy -w # -*-perl-*-   use lib qw(/usr/pack/rrdtool-1.0.33-to/lib/perl); use lib qw(/home/oetiker/data/projects/AADJ-smokeping/dist/lib); use CGI::Carp qw(fatalsToBrowser); use Smokeping 2.004000; Smokeping::cgi("/home/oetiker/data/projects/AADJ-smokeping/dist/etc/config");

Smokeping install With this: 1 2 3 4 5 6 7 8 9 10 #!/usr/bin/speedy -w # -*-perl-*-   use lib qw(/usr/lib/perl5/vendor_perl/5.8.8/i386-linux-thread-multi/auto/RRDs); use lib qw(/opt/smokeping/lib); use CGI::Carp qw(fatalsToBrowser); use Smokeping 2.004000; Smokeping::cgi("/opt/smokeping/etc/config");

Smokeping install # cd /opt/smokeping/htdocs # vi /opt/smokeping/htdocs/tr.cgi Replace this: 1 2 3 4 #!/usr/sepp/bin/speedy-5.8.8 -w use strict; use lib qw(/home/oposs/smokeping/software/lib); use lib qw(perl);

Smokeping install With this: 1 2 3 4 #!/usr/bin/speedy -w use strict; use lib qw(/opt/smokeping/lib); use lib qw(perl);

Smokeping install # mkdir -p /var/www/html/smokeping/img /var/www/html/smokeping/script/ /opt/smokeping/data /opt/smokeping/var # chown -R apache:apache /var/www/html/smokeping/img # ln -s /opt/smokeping/htdocs/cropper /var/www/html/smokeping/cropper # ln -s /opt/smokeping/htdocs/resource /var/www/html/smokeping/resource # ln -s /opt/smokeping/htdocs/script/Tr.js /var/www/html/smokeping/script/Tr.js # ln -s /opt/smokeping/htdocs/smokeping.cgi /var/www/html/smokeping/smokeping.cgi # ln -s /opt/smokeping/htdocs/tr.cgi /var/www/html/smokeping/tr.cgi

Smokeping install vi /etc/httpd/conf/httpd.conf change > #AddHandler cgi-script .cgi to > AddHandler cgi-script .cgi Under <Directory “/var/www/html”> change > Options Indexes FollowSymLinks to > Options Indexes FollowSymLinks ExecCGI AddDefaultCharset UTF-8

Smokeping install # vi /opt/smokeping/etc/basepage.html Change this: 1 2 3 4 <script src="cropper/lib/prototype.js" type="text/javascript"></script> <script src="cropper/lib/scriptaculous.js?load=builder,dragdrop" type="text/javascript"></script> <script src="cropper/cropper.js" type="text/javascript"></script> <script src="cropper/smokeping-zoom.js" type="text/javascript"></script> 1 2 3 4 <script src="/smokeping/cropper/lib/prototype.js" type="text/javascript"></script> <script src="/smokeping/cropper/lib/scriptaculous.js?load=builder,dragdrop" type="text/javascript"></script> <script src="/smokeping/cropper/cropper.js" type="text/javascript"></script> <script src="/smokeping/cropper/smokeping-zoom.js" type="text/javascript"></script> To this:

Smokeping install # vi /opt/smokeping/htdocs/tr.html Change this: 1 2 3 4 5 6 7 <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>SmokeTrace</title> <script type="text/javascript" src="script/Tr.js"></script> </head> </html> 1 2 3 4 5 6 7 <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>SmokeTrace</title> <script type="text/javascript" src="/script/Tr.js"></script> </head> </html To this:

Smokeping install # ln -s /opt/smokeping/htdocs/tr.html /var/www/html/smokeping/tr.html # vi /opt/smokeping/etc/config

Smokeping install # vi /etc/init.d/smokeping # chmod 755 /etc/init.d/smokeping Apache and Smokeping startup # /sbin/chkconfig smokeping on # /sbin/chkconfig httpd on # /sbin/service smokeping start # /sbin/service httpd start

Smokeping install browse http://140.115.2.38/smokeping/smokeping.cgi

Smokeping config

Config *** General *** owner = ncuadmin contact = center25@cc.ncu.edu.tw mailhost = 140.115.2.38 sendmail = /usr/sbin/sendmail imgcache = /var/www/html/smokeping/img imgurl = http://140.115.2.38/smokeping/img datadir = /opt/smokeping/data piddir = /opt/smokeping/var cgiurl = http://140.115.2.38/smokeping/smokeping.cgi

Config *** Alerts *** to = center25@cc.ncu.edu.tw (設定要收到警報信件的信箱) from = center25@cc.ncu.edu.tw (設定本機發信的帳號 ) +someloss  type = loss  # in percent  pattern = >20%,>20% comment = #說明 : 當連續兩個週期封包都Loss高於20% 時就alert *** Database *** step     = 300       #300秒 pings    = 20        #ping 20次

Config *** Presentation *** template = /opt/smokeping/etc/basepage.html charset = UTF-8 + overview width = 600 height = 50 range = 10h + detail height = 200 unison_tolerance = 2 "Last 3 Hours" 3h "Last 30 Hours" 30h "Last 10 Days" 10d "Last 400 Days" 400d

Config *** Probes *** + FPing binary = /usr/local/sbin/fping6 + DNS binary = /usr/bin/dig pings = 5 step = 180

Config *** Targets *** probe = FPing + DNS menu = Top probe = DNS title = Network Latency Grapher remark = Welcome to this SmokePing website. + network menu = Net latency title = Network latency (ICMP pings) ++ ns1 host = 2001:288:3001:1::31 ++ ns2 host = 2001:288:3000:227::4 + DNS probe = DNS menu = DNS latency title = Service latency (DNS) ++ dns1 host = 2001:288:3001:1::31 ++ dns2 host = 2001:288:3000:227::4

Config

Config

Config-curl *** Probes *** + Curl binary = /usr/bin/curl step = 60 # a default for this target-specific variable urlformat = http://%host%/ *** Targets *** probe = Curl menu = Top title = Network Latency Grapher remark = Welcome to this SmokePing website. + HTTP menu = http title = HTTP latency ++ ncuweb menu = ncuweb title = HTTP latency for ncuweb host = www.ncu.edu.tw

Config-curl

Config-echoping *** Probes *** + EchoPingHttp binary = /usr/bin/echoping *** Targets *** probe = EchoPingHttp menu = Top title = Network Latency Grapher remark = Welcome to this SmokePing website. + HTTP menu = http title = HTTP latency ++ ncuweb menu = ncuweb title = HTTP latency for ncuweb host = www.ncu.edu.tw

Config-echoping

結論 好用的延遲(latency)狀態量測工具 除了監測封包量測往返時間, 搭配其他工具可監測web,ftp 下載的時間及dns查詢時間

Thank You!