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[Translated] sources/tech/20151204 Install and Configure Munin monito…
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ictlyh Translating
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Install and Configure Munin monitoring server in Linux
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================================================================================
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Munin is an excellent system monitoring tool similar to [RRD tool][1] which will give you ample information about system performance in multiple fronts like **disk, network, process, system and users**. These are some of the default properties Munin monitors.
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### How Munin works? ###
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Munin works in a client-server model. Munin server process on main server try to collect data from client daemon which is running locally(Munin can monitor it’ss own resources) or from remote client(Munin can monitor hundreds of machines) and displays them in graphs on its web interface.
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### Configuring Munin in nutshell ###
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This is of two steps as we have to configure both server and client.
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1)Install Munin server package and configure it so that it get data from clients.
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2)Configure Munin client so that server will connect to client daemon for data collocation.
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### Install munin server in Linux ###
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Munin server installation on Ubuntu/Debian based machines
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apt-get install munin apache2
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Munin server installation on Redhat/Centos based machines. Make sure that you [enable EPEL repo][2] before installing Munin on Redhat based machines as by default Redhat based machines do not have Munin in their repos.
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yum install munin httpd
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### Configuring Munin server in Linux ###
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Below are the steps we have to do in order to bring server up.
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1. Add host details which need monitoring in /etc/munin/munin.conf
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1. Configure apache web server to include munin details.
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1. Create User name and password for web interface
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1. Restart apache server
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**Step 1**: Add hosts entry in this file in **/etc/munin/munin.conf**. Go to end of the file and a client to monitor. Here in this example, I added my DB server and its IP address to monitor
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Example:
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[db.linuxnix.com]
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address 192.168.1.25
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use_node_name yes
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Save the file and exit.
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**Step 2**: Edit/create munin.conf file in /etc/apache2/conf.d folder to include Munin Apache related configs. In another note, by default other Munin web related configs are kept in /var/www/munin folder.
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vi /etc/apache2/conf.d/munin.conf
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Content:
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Alias /munin /var/www/munin
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<Directory /var/www/munin>
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Order allow,deny
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Allow from localhost 127.0.0.0/8 ::1
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AllowOverride None
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Options ExecCGI FollowSymlinks
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AddHandler cgi-script .cgi
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DirectoryIndex index.cgi
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AuthUserFile /etc/munin/munin.passwd
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AuthType basic
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AuthName "Munin stats"
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require valid-user
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<IfModule mod_expires.c>
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ExpiresActive On
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ExpiresDefault M310
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</IfModule>
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</Directory>
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Save the file and exit
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**Step 3**: Now create a username and password for viewing muning graphs:
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htpasswd -c /etc/munin/munin-htpasswd munin
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**Note**: For Redhat/Centos machines replace “**apache2**” with “**httpd**” in each path to access your config files.
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**Step 3**: Restart Apache server so that Munin configurations are picked-up by Apache.
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#### Ubuntu/Debian based: ####
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service apache2 restart
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#### Centos/Redhat based: ####
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service httpd restart
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### Install and configure Munin client in Linux ###
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**Step 1**: Install Munin client in Linux
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apt-get install munin-node
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**Note**: If you want to monitor your Munin server, then you have to install munin-node on that as well.
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**Step 2**: Configure client by editing munin-node.conf file.
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vi /etc/munin/munin-node.conf
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Example:
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allow ^127\.0\.0\.1$
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allow ^10\.10\.20\.20$
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----------
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# Which address to bind to;
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host *
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----------
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# And which port
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port 4949
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**Note**: 10.10.20.20 is my Munin server and it connections to 4949 port on client to get its data.
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**Step 3**: Restart munin-node on client server
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service munin-node restart
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### Testing connection ###
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check if you are able to connect client from server on 4949 port, other wise you have to open that port on client machine.
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telnet db.linuxnix.com 4949
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Accessing Munin web interface
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http://munin.linuxnix.com/munin/index.html
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Hope this helps to configure basic Munin server.
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--------------------------------------------------------------------------------
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via: http://www.linuxnix.com/install-and-configure-munin-monitoring-server-in-linux/
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作者：[Surendra Anne][a]
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译者：[译者ID](https://github.com/译者ID)
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校对：[校对者ID](https://github.com/校对者ID)
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本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创编译，[Linux中国](https://linux.cn/) 荣誉推出
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[a]:http://www.linuxnix.com/author/surendra/
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[1]:http://www.linuxnix.com/network-monitoringinfo-gathering-tools-in-linux/
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[2]:http://www.linuxnix.com/how-to-install-and-enable-epel-repo-in-rhel-centos-oracle-scentific-linux/
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在 Linux 上安装和配置 Munin 检测服务器
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================================================================================
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Munin 是一款和 [RRD][1] 类似很好的系统检测工具，它能提供给你多方面的系统性能信息，例如 **磁盘、网络、进程、系统和用户**。这些是 Munin 默认检测的属性。
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### Munin 如何工作？ ###
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Munin 以客户端-服务器模式运行。主服务器上运行的 Munin 服务器进程尝试从本地运行的客户端守护进程（Munin 可以检测它自己的资源）或者远程客户端（Munin 可以检测上百台机器）收集数据，然后在它的 web 页面以图的形式显示出来。
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### 在 nutshell 中配置 Munin ###
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要配置服务器端和客户端，我们需要完成以下两步。
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1) 安装 Munin 服务器软件包并配置，使得它能从客户端收集数据。
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2) 安装 Munin 客户端使得服务器能连接到客户端守护进程用于收集数据。
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### 在 Linux 上安装 munin 服务器端 ###
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在基于 Ubuntu/Debian 的机器上安装 Munin 服务器
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apt-get install munin apache2
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在基于 Redhat/CentOS 的机器上安装 Munin 服务器。在基于 Redhat 的机器上安装 Munin 之前，你需要确保 [启用 EPEL 软件仓库][2]，因为基于 Redhead 的机器它们的软件仓库默认没有 Munin。
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yum install munin httpd
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### 在 Linux 上配置 Munin 服务器端 ###
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下面是我们要启动服务器按按顺序执行的步骤。
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1. 在 /etc/munin/munin.conf 中添加需要检测的主机详情
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2. 配置 apache web 服务器使其包括 munin 配置。
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3. 为 web 页面创建用户名和密码
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4. 重启 apache 服务器
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**步骤 1**： 在 **/etc/munin/munin.conf** 文件中添加主机条目。调到文件末尾添加要检测的客户端。在这个例子中，我添加了要检测的数据库服务器和它的 IP 地址。
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事例：
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[db.linuxnix.com]
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address 192.168.1.25
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use_node_name yes
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保存文件并退出。
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**步骤 2**： 在 /etc/apache2/conf.d 目录中编辑/创建文件 munin.conf 用于包括 Munin 和 Apache 相关的配置。另外注意一点，默认其它和 web 相关的 Munin 配置保存在 /var/www/munin 目录。
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vi /etc/apache2/conf.d/munin.conf
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内容：
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Alias /munin /var/www/munin
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<Directory /var/www/munin>
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Order allow,deny
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Allow from localhost 127.0.0.0/8 ::1
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AllowOverride None
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Options ExecCGI FollowSymlinks
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AddHandler cgi-script .cgi
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DirectoryIndex index.cgi
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AuthUserFile /etc/munin/munin.passwd
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AuthType basic
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AuthName "Munin stats"
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require valid-user
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<IfModule mod_expires.c>
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ExpiresActive On
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ExpiresDefault M310
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</IfModule>
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</Directory>
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保存文件并退出
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**步骤 3**： 现在为查看 munin 的图示创建用户名和密码：
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htpasswd -c /etc/munin/munin-htpasswd munin
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**注意**：对于 Redhat/Centos 机器，为了访问你的配置文件，需要在每个路径中用 “**httpd**” 替换 “**apache2**”。
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**步骤 4**： 重启 Apache 服务器，使得 Munin 配置生效。
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#### 基于 Ubuntu/Debian ： ####
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service apache2 restart
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#### 基于 Centos/Redhat ： ####
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service httpd restart
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### 在 Linux 上安装和配置 Munin 客户端 ###
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**步骤 1**： 在 Linux 上安装 Munin 客户端
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apt-get install munin-node
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**注意**：如果你想检测你的 Munin 服务器端，你也需要在那里安装 munin-node。
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**步骤 2**： 编辑 munin-node.conf 文件配置客户端。
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vi /etc/munin/munin-node.conf
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事例：
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allow ^127\.0\.0\.1$
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allow ^10\.10\.20\.20$
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----------
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# Which address to bind to;
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host *
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----------
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# And which port
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port 4949
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**注意**： 10.10.20.20 是我的 Munin 服务器，它连接到客户端的 4949 端口获取数据。
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**步骤 3**： 在客户端机器中重启 munin-node
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service munin-node restart
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### 测试连接 ###
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检查你是否能从服务器的连接到客户端的 4949 端口，如果不行，你需要在客户端机器中打开该端口。
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telnet db.linuxnix.com 4949
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访问 Munin web 页面
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http://munin.linuxnix.com/munin/index.html
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希望这些能对你配置基本的 Munin 服务器有所帮助。
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--------------------------------------------------------------------------------
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via: http://www.linuxnix.com/install-and-configure-munin-monitoring-server-in-linux/
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作者：[Surendra Anne][a]
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译者：[ictlyh](http://mutouxiaogui.cn/blog/)
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校对：[校对者ID](https://github.com/校对者ID)
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本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创编译，[Linux中国](https://linux.cn/) 荣誉推出
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[a]:http://www.linuxnix.com/author/surendra/
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[1]:http://www.linuxnix.com/network-monitoringinfo-gathering-tools-in-linux/
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[2]:http://www.linuxnix.com/how-to-install-and-enable-epel-repo-in-rhel-centos-oracle-scentific-linux/
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