Difference between revisions of "util-vserver:Useful commands"

Latest revision as of 22:19, 21 October 2011

[edit] Starting a virtual server

You can start a virtual server with the following command:

# vserver <name> start

Where <name> is the name of the virtual server.

[edit] Coming into a virtual server

To enter into a virtual server execute this command:

# vserver <name> enter

[edit] To exit from a virtual server

To exit from a virtual server you only need to finish the Shell. For example typing:

# exit

or pressing "Ctrl + d"

In this way you can finish the virtual server Shell.

[edit] Stopping a virtual server

Use the following command:

# vserver <name> stop

[edit] Showing what virtual servers are running and some information about them

run this command:

$ vserver-stat

Please note that root context is not listed anymore with recent util-vserver.

[edit] Copying a virtual server and changing its address IP

You should visit the Building Guest Systems section and look for the clone and rsync methods.

For reference, the (deprecated) vserver-copy method worked as follows.

# vserver-copy --stopstart --ip newIP --domain newDomain nameOldServer nameNewServer

where:

-s,--stopstart: stops  the virtual server before copying and start the new vserver afterwards.
                This really only makes sense if you are copying across root hosts and not changing
                names or IP addresses.

-i,--ip address: the new IP address when changing name. Overwrites /etc/hosts. Must be used with -d

-d,--domain domain: the new DNS domain when changing name. Overwrites /etc/hosts. Must be used with -i

You can see more information in "man vserver-copy"

[edit] Deleting a virtual server

# vserver <name> delete

Where <name> should be replaced by the name of virtual server.

[edit] Putting a virtual server in a specified directory

vserver <name> build ... --rootdir /path/to/vserver ...

[edit] Doing one action to ALL vservers in one go

vsomething [--quiet|-q] [--debug] <cmd> [--] <vserver-name>* [--all] -- <params>+

Execute <cmd> <vserver> <params>* foreach vserver.

Just launch any command you want to all the vservers in one go, very usefull for hashify for exemple :)

[edit] Other useful commands

vserver-info: gives info about the vserver program itself

vtop: a top command that shows the top of *all* vservers

vpstree: a tree ps view of processes of all vservers

vps: a ps that shows processes of all vservers