Changes

== Usage guidelines (to be completed) ==

== Usage guidelines (to be completed) ==

Here is a few guides to follow for all new virtual machines:

Here is a few guides to follow for all new virtual machines:

# MUST: no direct root access on the nodes, even with SSH key.

# MUST: no SSH root login on the nodes, even with SSH key.

# MUST: sudoers (root access using sudo) limited to SSH key based authentication

# MUST: sudoers (root access using sudo) limited to SSH key based authentication

# SHOULD: use SSH keys published on Github: giving access to a server is then simple and secure: <pre>curl https://github.com/CharlesNepote.keys | tee -a ~/.ssh/authorized_keys</pre>

# SHOULD: use SSH keys published on Github: giving access to a server is then simple and secure: <pre>curl https://github.com/CharlesNepote.keys | tee -a ~/.ssh/authorized_keys</pre>

# SHOULD: take care of production resources: use "nice" / "ionice" for scripts manually launched. Stéphane's tip: just use <pre>nice ./mycommand whatever arguments</pre> (nice default to lower the priority). CPU and I/O priorities can be set if needed at the virtualization level.

# SHOULD: take care of production resources: use "nice" / "ionice" for scripts manually launched. Stéphane's tip: just use <pre>nice ./mycommand whatever arguments</pre> (nice default to lower the priority). CPU and I/O priorities can be set if needed at the virtualization level.