Util-vserver:Cheatsheet
From Linix VServer
Jump to navigationJump to search
This is a cheatsheet for util-vserver. Some of these recipes have been arrived at by users, using trial and error, so they may not always be the "official" solutions.
Where to find the latest util-vserver ?
- Look here:
http://people.linux-vserver.org/~dhozac/t/uv-testing/
- and for the lastest kernel patch:
http://vserver.13thfloor.at/Experimental/
How to add an IP address to a live guest ?
- create the address on the host:
ifconfig eth0:10 172.16.0.145/12
orip addr add dev eth0 172.16.0.145/12
or evenip addr add dev dummy0 172.16.0.145/12
- add the adress:
naddress --nid guestname --add --ip 172.16.0.145 --bcast 172.31.255.255
- Depending on what you use the vserver for, you may not want the broadcast thing at all; you can also use a /32 mask for the IP in this case.
- add the ip to the config directory to make it stick if you restart
- enter the guest and verify services that need to listen on the ip, restart if necessary (for me it was not).
How to change the machine type live ?
- use the vuname command
Usage: vuname [-g] --xid <xid> <TAG>*
or vuname -s --xid <xid> -t <TAG>=<VALUE> [--] [<command> <args>*]
or vuname --dir <dir> --xid <xid> [--missingok] [--] [<command> <args>*]
Options:
-g ... get and print the value
-s ... set the value
--xid <xid> ... operate on this context; 'self' means the current one
-t <TAG>=<VALUE>
... set <TAG> to <VALUE>; this option can be repeated multiple time
--dir <dir> ... read values from files in <dir>. These files must
have a valid TAG as their name
--missingok ... do not fail when the <DIR> from '--dir' does not exist.
Possible values for TAG are:
context, sysname, nodename, release, version, machine, domainname