WHM Console may_create_sym_link1 error

[thowden]

Hi All

I am seeing a console error message
may_create_sym_link: can't find ea-php56 in cronjobs

This is repeating and has some variations, occassionally ea-php72 is not found

I have updated to the latest CPanel / WHM patch today to see if that fixes, but no.

I have searched the terms in the error but cannot find anything that appears to relate.

Any pointers please.

Thanks.

 

[cPanelMichael]

Hello @thowden,

Can you open a support ticket so we can take a closer look at the affected system to see what's happening? You can post the ticket number here and I'll link this thread to it.

Thank you.

 

[cPanelMichael]

Hello,

To follow-up on this, this can occur when the following kernel option is enabled in the /etc/sysctl.conf file on CloudLinux systems (as part of the Link Traversal Protection feature):

fs.protected_symlinks_create = 1

CloudLinux warns against enabling the above kernel option on cPanel & WHM servers on the following document:

Kernel Settings | Documentation

CloudLinux Documentation

docs.cloudlinux.com

Note that specific to the warning message reported on this thread, the console output doesn't result in a loss of functionality. For more information about why these specific symlinks exist, see the document below:

EasyApache 4 and the ea-php-cli Package - EasyApache 4 - cPanel Documentation

documentation.cpanel.net

Thank you.

 

[thowden]

Hi

Funny how things come around, I just had a similar error and a Google search brings me back to my own thread that I had forgotten about.

@cPanelMichael thanks for the response, I had missed it entirely.

I have just checked, as much as I can, and the kernel is not compiled with that feature, albeit that the kernel is now a later version.

I checked in the /etc/sysctl.conf file and it is silent for that option. I also checked via

#cat /lib/modules/$(uname -r)/build/.config | grep SYMLINKS ## (also symlinks)

but that setting is not found (maybe that is not the correct location to check?)

My error today was displayed when I opened the XenConsole to access the VM terminal for this CPanel server. In my haste I omitted to screenshot it but the error was essentially the same but reporting "can't find ea-php72 in " various directories.

From the documentation at CloudLinux which is linked above, it appears possible that while the

fs.protected_symlinks_create = 1

option is not explicitly configured in the /etc/sysctl.conf file, it may be a default setting in this current build ?

In any case, I am going to set it explicitly as 0 which I assume will turn it off, if it is on by default.

Addendum:

While I was going to set this off, I then found an issue with 100% inode use on one of the drives, notably /home which is on its own drive. From memory the "can't find message from this morning was reporting files that would / should have been accessed in /home and I am now thinking that the error is in fact relating to the 'out of space' error caused from lack of inodes.

I'll update this later.

 

[thowden]

Hi

I am still getting these error / warnings at the root console may_create_sym_link: can't find ea-php72 in xxxxxxx (repeated with various directories).



The inode issue was apparently irrelevant.

I'll try the

fs.protected_symlinks_create = 0 setting at the weekend.

 

[cPRex]

@thowden - were you able to get that resolved?