Smokeping配置调整

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 smokeping两种邮件报警方式

一 、自带sendmail报警

修改这两句话
to = 收件邮箱，多个逗号分隔
from = smokealert@本机IP

/usr/local/smokeping/bin/smokeping --reload --logfile=/usr/local/smokeping/smokeping.log
重新加载配置文件

二、通过修改模块文件用QQ等邮箱发件

需要perl的Authen::SASL模块

cpan Authen::SASL

vi /usr/local/smokeping/lib/Smokeping.pm

#头上加

use Authen::SASL;

#定位到sendmail函数，默认新版本sendmail函数的定义的已经是下面这样了，如果不是改成下面这样

sub sendmail ($$$){
my $from = shift;
my $to = shift;
$to = $1 if $to =~ /<(.*?)>/;
my $body = shift;
if ($cfg->{General}{mailhost} and
my $smtp = Net::SMTP->new([split /s*,s*/, $cfg->{General}{mailhost}],Timeout=>5) ){
$smtp->auth(split(/s*,s*/, $cfg->{General}{mailusr}),split(/s*,s*/, $cfg->{General}{mailpwd}));
$smtp->mail($from);
$smtp->to(split(/s*,s*/, $to));
$smtp->data();
$smtp->datasend($body);
$smtp->dataend();
$smtp->quit;
} elsif ($cfg->{General}{sendmail} or -x "/usr/lib/sendmail"){
open (M, "|-") || exec (($cfg->{General}{sendmail} || "/usr/lib/sendmail"),"-f",$from,$to);
print M $body;
close M;
} else {
warn "ERROR: not sending mail to $to, as all methodes failed ";
}
}

#找到 '_vars =>' ,把 mailusr mailpwd 加进去。不然不能启动哦！General configuration values valid for the whole SmokePing setup.
DOC
_vars =>
[ qw(owner imgcache imgurl datadir dyndir pagedir piddir sendmail offset
smokemail cgiurl mailhost mailusr mailpwd snpphost contact display_name
syslogfacility syslogpriority concurrentprobes changeprocessnames tmail
changecgiprogramname linkstyle precreateperms ) ],

配置完成后修改配置文件/opt/smokeping/etc/config ，增加邮件服务器的配置：

mailhost = smtp.361way.com
mailusr = monitor@361way.com
mailpwd = xxxxxxxxx

自定义alerts告警策略

如下定义了几种告警策略，bigloss 、someloss等

*** Alerts ***
to = admin@361way.com
from = monitor@361way.com
+bigloss
type = loss
# in percent
pattern = ==0%,==0%,==0%,==0%,>0%,>0%,>0% 突然三次丢包
comment = suddenly there is packet loss
+someloss
type = loss
# in percent
pattern = >0%,*12*,>0%,*12*,>0%
comment = loss 3 times in a row
+startloss
type = loss
# in percent
pattern = ==S,>0%,>0%,>0%
comment = loss at startup
+rttdetect
type = rtt
# in milli seconds
pattern = <10,<10,<10,<10,<10,<100,>100,>100,>100
comment = routing messed up again ?
+hostdown
type = loss
# in percent
pattern = ==0%,==0%,==0%, ==U
comment = no reply
+lossdetect
type = loss
# in percent
pattern = ==0%,==0%,==0%,==0%,>20%,>20%,>20%
comment = suddenly there is packet loss

以上几种告警，这里选取三种说明如下：

someloss: 如果在12次检查中出现了3次丢包的情况(不论丢多少个包)，就进行alert;
rttbad:
如果连续出现两次50毫秒以上的延时，就进行alert;
rrtdetect:
之前5次检查延时都少于10毫秒，前6次检查延时都少于100毫秒，第7次开始连续3次检查延时都大于100毫秒的话，就进行alert。

2、策略应用

在target里面加上相应的策略配置即可，如下：

++ 361way
menu = 361way_host
title =361way.com
host = www.361way.com
alerts = someloss,hostdown

主机一旦出现告警，就会通过邮件发送到我们事先配置的邮箱中，类似下图：

smokeping-alert

上图中的邮件告警内容也可以进行自定义格式输出和修改，这个还是修改Smokeping.pm文件，修改其中如下部分即可：

my $default_mail = <<DOC;
Subject: [SmokeAlert] <##ALERT##> <##WHAT##> on <##LINE##>
<##STAMP##>
Alert "<##ALERT##>" <##WHAT##> for <##URL##>
Pattern
-------
<##PAT##>
Data (old --> now)
------------------
<##LOSS##>
<##RTT##>
Comment
-------
<##COMMENT##>
DOC

*** Alerts ***

to = zouyunhao@aspire-tech.com,minliang@aspire-tech.com,

from = smokealert@192.168.2.14

+someloss

type = loss

pattern = &gt;0%,*30*,&gt;0%,*30*,&gt;0% # in percent

comment = loss 1 packages in 30 continuous 3 times.

+manyloss type = loss

pattern = &gt;15%,*30*,&gt;15%,*30*,&gt;15% # in percent

comment = loss 5 packages in 30 continuous 3 times.

+rttbad type = rtt

pattern = ==S,&gt;50,&gt;50 # in milliseconds

comment = For more than two consecutive 50-millisecond delay.

（1）to 表示接受所有报警的邮箱，如果需要在特定的节点报警发送到特定的邮箱

则在该节点上增加alertee = 13828466531@139.com即可。

（2）manyloss 表示30个包丢15%的情况 连续出现3次就发报警。

（3）someloss 表示30个包丢1个，连续出现3次就发送报警；rttbad表示连续两个包延迟超过50ms就发送报警。

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