Question
ubuntu 14.04 uname reports wrong kernel version
- Posted on August 27, 2015
- FirewallConfiguration ManagementDeploymentUbuntu
Asked by tmbailey123
Hi I am running a digital ocean ubuntu 14.04 image. For some reason uname cmd reports 3.13.0-24 when the actual kernel should be 3.13.0-62.
bailey@bailey01 -> uname -mrs
Linux 3.13.0-24-generic x86_64
My system is up to date with the latest pkgs. The later kernel headers are available
bailey@bailey01 -> dpkg -l|grep linux-headers
ii linux-headers-3.13.0-62 3.13.0-62.102 all Header files related to Linux kernel version 3.13.0
ii linux-headers-3.13.0-62-generic 3.13.0-62.102 amd64 Linux kernel headers for version 3.13.0 on 64 bit x86 SMP
ii linux-headers-generic 3.13.0.62.69 amd64 Generic Linux kernel headers
/boot/ has the correct files
bailey@bailey01 -> pwd;ls -l
/boot
total 29740
-rw-r--r-- 1 root root 1165261 Aug 12 04:15 abi-3.13.0-62-generic
-rw-r--r-- 1 root root 165763 Aug 12 04:15 config-3.13.0-62-generic
drwxr-xr-x 5 root root 4096 Aug 27 13:20 grub
-rw-r--r-- 1 root root 19351558 Aug 26 22:08 initrd.img-3.13.0-62-generic
-rw-r--r-- 1 root root 176500 Mar 13 2014 memtest86+.bin
-rw-r--r-- 1 root root 178176 Mar 13 2014 memtest86+.elf
-rw-r--r-- 1 root root 178680 Mar 13 2014 memtest86+_multiboot.bin
-rw------- 1 root root 3392306 Aug 12 04:15 System.map-3.13.0-62-generic
-rw------- 1 root root 5820896 Aug 12 04:15 vmlinuz-3.13.0-62-generic
I ran an update on the grub config using two different commands (grub-mkconfig and update-grub)
sudo grub-mkconfig -o /boot/grub/grub.cfg
Generating grub configuration file ...
Found linux image: /boot/vmlinuz-3.13.0-62-generic
Found initrd image: /boot/initrd.img-3.13.0-62-generic
Found memtest86+ image: /boot/memtest86+.elf
Found memtest86+ image: /boot/memtest86+.bin
done
I rebooted the server after the mkconfig.
This started when I tried to configure iptables and received errors pointing to this erroneous kernel version
bailey@bailey01 -> sudo iptables -L
modprobe: ERROR: ../libkmod/libkmod.c:556 kmod_search_moddep() could not open moddep file '/lib/modules/3.13.0-24-generic/modules.dep.bin'
iptables v1.4.21: can't initialize iptables table `filter': Table does not exist (do you need to insmod?)
Perhaps iptables or your kernel needs to be upgraded.
A google search has not returned any links that were helpful.
Help me Obi Wan Kenobi you are my last hope 8-)
Cheers
-mike
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@tmbailey123 did you ever get this solved? I have a similar issue on 15.04
but it should be 3.19
I had the same issue. I found the answer here: How To Update a DigitalOcean Server’s Kernel
Ran into that exact same problem on multiple occasions (at least on the Ubuntu kernels). It always surfaced with ipTables (and hence, CSF firewalls). For us, the short answer was a hard restart after the update process. Simply rebooting the droplet would not solve the issue.
(This assumes you’ve actually installed the updated kernel. We used a “manual” update process. An example can be be found all over StackExchange, including this fragment:)
Note: this will “break” the ability to utilize the D/O droplet console to manage your kernel (under “settings --> kernel”)