All Questions(server)

Let's Encrypt has announced they have:

Turned on support for the ACME DNS challenge

How do I make ./letsencrypt-auto generate a new certificate using DNS challenge domain validation?

EDIT
I mean: How do I avoid http/https port binding, by using the newly announced feature (2015-01-20) that lets you prove the domain ownership by adding a specific TXT record in the DNS zone of the target domain?

A pod in my Kubernetes cluster is stuck on "ContainerCreating" after running a create. How do I see logs for this operation in order to diagnose why it is stuck? kubectl logs doesn't seem to work since the container needs to be in a non-pending state.

I am trying to use symbolic links. I did some reading and found the following commands:

Creation -> ln -s {/path/to/file-name} {link-name}
Update -> ln -sfn {/path/to/file-name} {link-name}
Deletion -> rm {link-name}

Creations and deletions work fine. But updates do not work. After performing this command, the symlink becomes invalid.

I have read here and there that it is not possible to update/override a symlink. So there is contradictory information on the net. Who is right? If a symlink can be updated/overridden, how can I achieve this?

Update

Here is my directory structure:

~/scripts/test/
~/scripts/test/remote_loc/
~/scripts/test/remote_loc/site1/
~/scripts/test/remote_loc/site1/stuff1.txt
~/scripts/test/remote_loc/site2/
~/scripts/test/remote_loc/site2/stuff2.txt
~/scripts/test/remote_loc/site2/
~/scripts/test/remote_loc/site3/stuff3.txt

From ~/scripts/test/, when I perform:

ln -s /remote_loc/site1 test_link

a test_link is created, and I can ls -l it, but it seems broken (contrary to what I said above in my question).

How can I perform a multiple directory level link?

I have a Git repository on a staging server which multiple developers need to be able to pull to. git-init seems to have a flag very close to what I'm looking for: --shared, except I'd like multiple people to pull to that repository, as well. The git-clone's --shared flag does something entirely different.

What's the easiest way to change an existing repository's permissions?

Has anyone got a nice solution for handling files in /var/www? We're running Name Based Virtual Hosts and the Apache 2 user is www-data.

We've got two regular users & root. So when messing with files in /var/www, rather than having to...

chown -R www-data:www-data

...all the time, what's a good way of handling this?

Supplementary question: How hardcore do you then go on permissions?

This one has always been a problem in collaborative development environments.