centos安装snmpwalk

系统环境准备

在安装SNMP支持工具之前，我们需要确保CentOS系统已经安装了cacti监控系统，如果还没有安装cacti,请先安装cacti，接下来，我们将介绍如何在CentOS系统中安装SNMP支持工具。

安装SNMP服务

1、安装SNMP服务

我们需要安装SNMP服务，在终端中输入以下命令：

sudo yum install net-snmp net-snmp-utils

2、启动SNMP服务

安装完成后，我们需要启动SNMP服务，在终端中输入以下命令：

sudo systemctl start net-snmpd

3、设置SNMP服务开机自启

为了确保SNMP服务在系统启动时自动运行，我们需要将其设置为开机自启，在终端中输入以下命令：

sudo systemctl enable net-snmpd

配置SNMP服务

1、编辑SNMP配置文件

为了方便管理SNMP服务，我们需要编辑其配置文件，在终端中输入以下命令：

sudo vi /etc/net-snmp/snmpd.conf

2、修改配置文件内容

在打开的配置文件中，我们需要修改以下内容：

将rocommunity字符串注释掉，以允许所有用户访问SNMP信息，如果你想限制访问权限，请取消注释并设置相应的用户名和密码。
rocommunity "public"  all can read this community information (not recommended)

3、保存并退出配置文件

按下Esc键，然后输入:wq,按回车键保存并退出配置文件。

测试SNMP服务是否正常工作

1、使用snmpwalk命令测试SNMP服务是否正常工作，在终端中输入以下命令：

sudo snmpwalk -v 2c -c public localhost 1.3.6.1.2.1.1 | head -n 50

如果看到类似如下的输出，说明SNMP服务已经正常工作：

sysDescr    1.3.6.1.2.1.1.1.0 = CentOS Linux release 7.9.2009 (Core) up to date (4 weeks ago) x86_64 x86_64 x86_64 GNU/Linux [aarch64] [kernel-4.15.0-59-generic@xxxxxxxx] with Python 3.7.3-7+deb[arch=aarch64] + apt-cacher-ng 0 (+ apt-transport-https) [running] [enabled] [virtual] Apache/2.4.29 (Unix) PHP/7.4.16-0+deb [built] [with soca] [prefix=/usr/local/libexec] [shared] [gpl2] Server built: Mar 29 2020 10:58:58 GMT; 1 day, 1 hour, 58 min ago Database types supported by this server are: SNMPv2c and above using the Net-SNMP package version 4.1 or later. The following MIB objects are available in this database: sysDescr sysUpTime whenLastBoot upTime systemContact osVersion osArchitecture contactName IF-MIB ifIndex IF-MIB::ifType ifAlias ifOperStatus ifSpeed ifHighSpeed ifLowSpeed ifName ifMTU ifAdminStatus ifIPAddress ifHighSpeedFlag ifDescription ifDescr for more information please refer to RFC 1757 and RFC 3413 at http://www.ietf.org/rfc/rfc1757.txt and http://www.ietf.org/rfc/rfc3413.txt respectively. If you do not have access to this information, please consult your network administrator for assistance. Please note that this is a sample output and may vary depending on your system configuration and SNMP service version. For more detailed information about SNMP services, please refer to the official documentation at https://www.snmplabs.com/about/what-is-snmp/index.html and https://www.snmplabs.com/download/index.html. Also, please see the man page for net-snmp(8) at http://www.net-snmp.org/man/man8/net-snmp(8). You can also visit the Net-SNMP website at http://www.net-snmp.org/ for more information and resources related to SNMP and network management. If you encounter any issues or require further assistance, please feel free to contact the Net-SNMP mailing list at maillist@net-snmp.org or visit their forums at http://www.net-snmp.org/forums/index.html for support and guidance on using SNMP in your network environment. If you would like to report a security vulnerability or a bug related to net-snmp(8), please send an email to security@net-snmp.org with the details of the issue and a link to a patched version of net-snmp(8). Please include your name, organization, and contact information in the email body to help us identify the issue and respond promptly to your inquiry. Thank you for using our products and services!"

相关问题与解答

1、如何查看SNMP服务的版本？

答：可以使用snmpget命令查询SNMP服务的版本。

sudo snmpget -v 2c localhost 1.3.6.1.2.1 | grep Version | cut -d' ' -f2 | head -n 1 | sed 's/(0-9]*).*/1/'