网络链路质量监控：Smokeping部署与配置

### 作者：邓聪聪

#### 1. 安装Smokeping及其依赖项

为了安装Smokeping，需要下载并安装以下三个软件包：

```bash
wget http://www.fping.org/dist/fping-3.10.tar.gz
wget https://fossies.org/linux/misc/old/echoping-6.0.2.tar.gz
wget http://oss.oetiker.ch/smokeping/pub/smokeping-2.6.9.tar.gz
```

#### 2. 安装依赖包及Apache服务

确保系统中已安装所有必要的依赖包和Apache服务。可以通过以下命令一次性安装这些依赖包：

```bash
yum install perl perl-Sys-Syslog podofo 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 popt popt-devel libidn libidn-devel mod_fcgid bind-utils -y
```

#### 3. 解压文件并编译安装

依次解压并编译安装上述下载的三个软件包：

```bash
tar xf fping-3.10.tar.gz
cd fping-3.10
./configure
make && make install

tar xf echoping-6.0.2.tar.gz
cd echoping-6.0.2
./configure
make && make install

tar xf smokeping-2.6.9.tar.gz
cd smokeping-2.6.9
./setup/build-perl-modules.sh /usr/local/smokeping/thirdparty
./configure --prefix=/usr/local/smokeping
/usr/bin/gmake install
```

#### 4. 配置Smokeping

创建必要的目录并设置权限：

```bash
cd /usr/local/smokeping/
mkdir cache data var
touch /var/log/smokeping.log
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
```

#### 5. 编辑配置文件

编辑`/usr/local/smokeping/etc/config`文件，主要修改如下内容：

```bash
# cgiurl = http://some.url/smokeping.cgi
cgiurl = http://访问所需要的IP/smokeping.cgi

*** Database ***
# step = 300
step = 60 # 建议改为60，即每分钟采集一次数据
pings = 20
```

#### 6. 配置Apache虚拟主机

编辑Apache的配置文件，添加以下内容以支持Smokeping：

```apache

ServerName 192.168.10.236
DocumentRoot /usr/local/smokeping/htdocs
ErrorLog logs/smokeping_error.log
CustomLog logs/smokeping_access.log common
Alias /smokeping "/usr/local/smokeping/htdocs/smokeping.fcgi"
Alias /cache "/usr/local/smokeping/cache"
Alias /cropper "/usr/local/smokeping/htdocs/cropper"

AllowOverride None
AddHandler cgi-script cgi fcgi
Options ExecCGI
Order allow,deny
Allow from all
AuthName "Smokeping Access" # 认证控制
AuthType Basic
AuthUserFile /usr/local/smokeping/htdocs/htpasswd
Require valid-user
DirectoryIndex smokeping.fcgi


```

#### 7. 创建认证文件

为了安全起见，建议为Smokeping配置基本认证。使用以下命令创建认证文件：

```bash
cd /usr/local/smokeping/htdocs
htpasswd -c /usr/local/smokeping/htdocs/htpasswd admin # 根据提示输入密码
chmod 600 /usr/local/smokeping/etc/smokeping_secrets.dist
```

#### 8. 重启HTTP服务和Smokeping

重启HTTP服务和Smokeping服务以使配置生效：

```bash
systemctl restart httpd
/usr/local/smokeping/bin/smokeping --logfile=/var/log/smokeping.log
```

#### 9. 创建启动脚本

创建一个启动脚本以方便管理Smokeping服务。将以下内容保存为`/etc/init.d/smokeping`：

```bash
#!/bin/bash
#
# Description: Smokeping init.d script
#
# Get function from functions library
. /etc/init.d/functions

# Start the service Smokeping
function start() {
echo -n "Starting Smokeping: "
/usr/local/smokeping/bin/smokeping >/dev/null 2>&1
touch /var/lock/subsys/smokeping
success "$SERVICE startup"
echo
}

# Restart the service Smokeping
function stop() {
echo -n "Stopping Smokeping: "
kill -9 `ps ax | grep "/usr/local/smokeping/bin/smokeping" | grep -v grep | awk '{ print $1 }'` >/dev/null 2>&1
rm -f /var/lock/subsys/smokeping
success "$SERVICE shutdown"
echo
}

# Show status about Smokeping
function status() {
NUM="`ps -ef|grep smokeping|grep -v grep|wc -l`"
if [ "$NUM" == "0" ]; then
echo "Smokeping is not running"
else
echo "Smokeping is running"
fi
}

### main logic ###
case "$1" in
start)
start
;;
stop)
stop
;;
status)
status
;;
restart|reload)
stop
start
;;
*)
echo "Usage: $0 {start|stop|restart|reload|status}"
exit 1
esac
exit 0
```

通过以上步骤，您应该可以成功地安装、配置并运行Smokeping，从而有效地监控网络链路的质量。