Re: upgrading raspberry pi required me to re install wireguard

[logcabin@fastmail.net]

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If you want to build/install wg from source, you can do what I do (automation is easy):

Download the source xz file and unpack it using xzcat and tar. Navigate to the src directory and build the module and tools using the "make" command. Then use "sudo make install" to get the wg .ko file replaced with the latest one and install any updates to the tools and wg executable. If you do this after a kernel upgrade, you'll need to reboot the pi before you install the wg kernel module, otherwise it won't find the right kernel headers. 

A simple shell script can be made to do all this stuff for you. 

On Thu, Feb 21, 2019, at 6:30 PM, Derrick Lyndon Pallas wrote:
> I just use DKMS to do it. Check out WireGuard to /usr/src, ln -s WireGuard/src WireGuard-0, dkms add WireGuard/0. If it's not auto building, have you tried dkms install WireGuard/0? ~D


> 


> On 2/21/19 2:57 PM, Arpit Gupta wrote:
>> Ya reboot did not solve this for me. I will read up on how I can execute package pre/post install scripts. 
>> 
>> Curious to know if the rebuild the module is the responsibility of the os or the package after a kernel upgrade?
>> 
>> I will try to remember this next time there is a kernel upgrade 😁.
>>  
>>  
>> 
>> --
>>  Arpit
>> 
>> On Thu, Feb 21, 2019, 4:30 AM <logcabin@fastmail.net> wrote:
>>> Yes, the kernel did get updated, causing the wg module dependencies to get out of sync. A reboot after the update should solve this, otherwise you may need to run the package's preinst script to get the modules back in sync. Should be no need to reinstall the wg packages.
>>> 
>>> On Thu, Feb 21, 2019, at 2:14 AM, Arpit Gupta wrote:
>>>> Hi All
>>>> 
>>>> I am running raspberry pi v3 and ran apt-get update and upgrade commands to get upto date. It also ended up updating the kernel i think. I should have paid more attention to what all was getting updated.
>>>> 
>>>> After the update wireguard was not running and upon debugging i found that the wireguard kernel module was no longer present. So i uninstalled all wireguard packages and installed them again and the module showed up and on reboot system was back to normal. What i was curious was how should one go about doing os/kernel updates in future in order to avoid this issue?
>>>> 
>>>> I am running
>>>> Linux raspberrypi 4.14.98-v7+ #1200 SMP Tue Feb 12 20:27:48 GMT 2019 armv7l GNU/Linux
>>>> No LSB modules are available.
>>>> Distributor ID: Raspbian
>>>> Description: Raspbian GNU/Linux 9.8 (stretch)
>>>> Release: 9.8
>>>> Codename: stretch
>>>> 
>>>> ii wireguard 0.0.20190123-1 all fast, modern, secure kernel VPN tunnel (metapackage)
>>>> ii wireguard-dkms 0.0.20190123-1 all fast, modern, secure kernel VPN tunnel (DKMS version)
>>>> ii wireguard-tools 0.0.20190123-1 armhf fast, modern, secure kernel VPN tunnel (userland utilities)
>>>> 
>>>> --
>>>> Arpit
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>>>> 
>>> 
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