无法在RHEL5 64位中启动SNMP。

Question

我使用yum在我的64位Centos5中安装了net、net utils和net devel.

下面是我安装的软件包：

net-snmp-devel-5.3.2.2-14.el5_7.1
net-snmp-utils-5.3.2.2-14.el5_7.1
net-snmp-devel-5.3.2.2-14.el5_7.1
net-snmp-libs-5.3.2.2-14.el5_7.1
net-snmp-libs-5.3.2.2-14.el5_7.1
net-snmp-5.3.2.2-14.el5_7.1
net-snmp-perl-5.3.2.2-14.el5_7.1

启动snmp，

[root@localhost ~]# /etc/init.d/snmpd start
Starting snmpd: /usr/sbin/snmpd: error while loading shared libraries: 
librpmdb4.4.so: cannot open shared object file: Permission denied
                                                           [FAILED]

但当我禁用SELinux时，

[root@localhost ~]# setenforce 0
[root@localhost ~]# /etc/init.d/snmpd start
Starting snmpd:                                            [  OK  ]

当我启用SELinux返回时，它就不能成功启动了。

[root@localhost ~]# setenforce 1
[root@localhost ~]# /etc/init.d/snmpd restart
Stopping snmpd:                                            [  OK  ]
Starting snmpd: /usr/sbin/snmpd: error while loading shared libraries: 
librpmdb-.4.so: cannot open shared object file: Permission denied
                                                           [FAILED]

我该怎么办？当然，我需要启用我的SELinux。任何可以修复这个配置的配置？提前谢谢。

Answer 1

它可能是默认的安全上下文没有正确设置。

因此，您可以通过发出以下命令递归地恢复默认的安全上下文。

首先更改为根dir。

#cd /
#restorecon -Rv .

Answer 2

为了使我的snmp服务工作，我在运行snmp所涉及的库上执行命令restorecon。

restorecon -vv /lib64/libres* 
restorecon -vv /lib64/libnsl* 
restorecon -vv /lib64/libdl*  
restorecon -vv /lib64/libm* 
restorecon -vv /lib64/libcrypt* 
restorecon -vv /lib64/libutil*  
restorecon -vv /lib64/libpthread* 
restorecon -vv /lib64/libc* 
restorecon -vv /lib64/librpmdb* 
restorecon -vv /usr/lib64/librpmdb-4.4.so  
restorecon -vv /lib64/libselinux*  
restorecon -vv /lib64/libnss3*  
restorecon -vv /usr/lib64/libnss3.so
restorecon -vv /usr/lib64/libnssutil3.so  
restorecon -vv /usr/lib64/libplds4.so  
restorecon -vv /usr/lib64/libplc4.so 
restorecon -vv /usr/lib64/libnspr4.so   
restorecon -vv /lib64/librt.so.1  
restorecon -vv /lib64/librt*  
restorecon -vv /usr/lib64/libbz2.so.1 
restorecon -vv /usr/lib64/libbz2* 
restorecon -vv /lib64/libgcc_s*  
restorecon -vv /usr/lib64/libsysfs*  
restorecon -vv /usr/lib64/libsqlite3* 
restorecon -vv /usr/lib64/libelf*  
restorecon -vv /lib64/libsepol*  
restorecon -vv /lib64/ld-linux-x86-64.so.2  
restorecon -vv /lib64/ld-linux-x86-64* 
restorecon -vv /lib64/ld-2.5.so  

restorecon将上述库的安全上下文从system_u:object_r:file_t:s0重置为system_u:object_r:lib_t:s0