A common problem after upgrading a kernel via yum on Centos is not creating the new kernel modules.
An example of this error happens when you try to use grep as in the print below.
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[root@vps3 /]# iptables -L -n | grep "meu ip" FATAL: Could not load /lib/modules/2.6.32-042stab123.9/modules.dep: No such file or directory [root@vps3 /]# |
This indicates that the directory 2.6.32-042stab 123.9 and therefore any module in your content can be loaded.
To correct this problem, the simplest way is this recipe:
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[root@vps3 /]# mkdir -p /lib/modules/`uname -r` [root@vps3 /]# cd /lib/modules/`uname -r` [root@vps3 2.6.32-042stab123.9]# depmod [root@vps3 2.6.32-042stab123.9]# ls -lah total 64K drwxr-xr-x 2 root root 4.0K Oct 18 16:11 . dr-xr-xr-x 10 root root 4.0K Oct 18 16:11 .. -rw-r--r-- 1 root root 45 Oct 18 16:11 modules.alias -rw-r--r-- 1 root root 12 Oct 18 16:11 modules.alias.bin -rw-r--r-- 1 root root 69 Oct 18 16:11 modules.ccwmap -rw-r--r-- 1 root root 0 Oct 18 16:11 modules.dep -rw-r--r-- 1 root root 12 Oct 18 16:11 modules.dep.bin -rw-r--r-- 1 root root 73 Oct 18 16:11 modules.ieee1394map -rw-r--r-- 1 root root 141 Oct 18 16:11 modules.inputmap -rw-r--r-- 1 root root 81 Oct 18 16:11 modules.isapnpmap -rw-r--r-- 1 root root 74 Oct 18 16:11 modules.ofmap -rw-r--r-- 1 root root 99 Oct 18 16:11 modules.pcimap -rw-r--r-- 1 root root 43 Oct 18 16:11 modules.seriomap -rw-r--r-- 1 root root 131 Oct 18 16:11 modules.softdep -rw-r--r-- 1 root root 49 Oct 18 16:11 modules.symbols -rw-r--r-- 1 root root 12 Oct 18 16:11 modules.symbols.bin -rw-r--r-- 1 root root 189 Oct 18 16:11 modules.usbmap [root@vps3 2.6.32-042stab123.9]# iptables -L -n | grep "meu ip" [root@vps3 2.6.32-042stab123.9]# |
This will create the directory and dependencies to modules for the kernel currently in use (uname -r).
If the problem is not resolved with the above commands. Try to reinstall the kernel via yum with the commands below.
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mv /boot/grub/grub.conf /boot/grub/grub.conf.bak yum -y reinstall kernel |
And then try the commands listed earlier.
I hope you find it useful both when it was for me.