Updating configuration settings about devices¶
WalT allows users to show or modify device configuration settings by
using commands walt device config or walt node config. For
instance:
$ walt device config switch1 # show
$ walt device config switch1 lldp.explore=true # modify
$ walt node config virt-node ram=384M # modify
One may also show or change several settings at once, and/or show or update them on several devices at once. (See also: walt help show device-sets) For instance:
$ walt device config all-switches # show
$ walt device config all-switches lldp.explore=true poe.reboots=true
$ walt node config virt-node-1,virt-node-2 ram=384M
However, in some cases, the semantic of a particular setting may
restrict syntax. For instance, the expose setting can only be
applied to a single device at once, because it would otherwise mean
redirecting a single server TCP port to several devices, an impossible
operation.
You can also use this command to indicate to walt server that an unknown device is actually a switch:
$ walt device config unknown-a2f2d3 type=switch
Here is the set of settings currently allowed:
Name |
possible values |
Applies to: |
Notes |
|---|---|---|---|
lldp.explore |
true or false |
switches |
|
poe.reboots |
true or false |
switches |
|
snmp.version |
1 or 2 |
switches |
|
snmp.community |
e.g. ‘private’ |
switches |
|
type |
‘switch’ |
‘unknown’ devices |
|
netsetup |
‘NAT’ or ‘LAN’ |
devices of walt-net |
|
ram |
e.g. ‘384M’ or ‘1G’ |
virtual nodes |
|
cpu.cores |
e.g. 1 or 4 |
virtual nodes |
|
disks |
e.g. ‘8G’ or ‘32G,1T’ |
virtual nodes |
|
boot.delay |
e.g. 2 or ‘random’ |
virtual nodes |
|
networks |
e.g. ‘walt-net,ext-net’ |
virtual nodes |
|
kexec.allow |
true or false |
nodes |
|
expose |
e.g. ‘80:8080,443:8443’ |
devices of walt-net |
Notes:
Only allowed when changing device type from ‘unknown’ to ‘switch’
Default is true: allow kexec-rebooting if the optional script
[walt-image]:/bin/walt-rebootimplements it.