Yes, I did mean the config in /etc/kea. Getting the config with config-write
seems to be the same as config-get, it returns the config with all the
defaults, example:
>From config-write:
{
"Dhcp4": {
"allocator": "iterative",
"authoritative": false,
"boot-file-name": "",
"calculate-tee-times": false,
"control-socket": {
"socket-name": "/tmp/kea4-ctrl-socket",
"socket-type": "unix"
},
"ddns-conflict-resolution-mode": "check-with-dhcid",
"ddns-generated-prefix": "myhost",
"ddns-override-client-update": false,
"ddns-override-no-update": false,
"ddns-qualifying-suffix": "",
"ddns-replace-client-name": "never",
"ddns-send-updates": true,
"ddns-update-on-renew": false,
And /etc/kea/kea-dhcp4.conf
{
"Dhcp4": {
"store-extended-info": true,
"interfaces-config": {
"interfaces": [
"eth0/192.168.1.1"
]
},
"control-socket": {
"socket-type": "unix",
"socket-name": "/tmp/kea4-ctrl-socket"
},
"lease-database": {
"type": "memfile",
"name": "/tmp/kea-dhcp4.csv",
"lfc-interval": 7200,
"persist": true
},
From: tachibanash...@outlook.com <tachibanash...@outlook.com>
Date: Monday, May 12, 2025 at 5:42 PM
To: Kea user's list <kea-users@lists.isc.org>
Cc: Diogo André de Assumpção <d...@meta.com>
Subject: Re: [Kea-users] config-hash-get – uses full config to hash?
“Using the same config that I have loaded in the server” do you mean the config
file in /etc/kea? If so, can you use the write-config API to get the
configuration in memory and compare it again? On May 12, 2025, at 2: 43 AM,
Diogo André de Assumpção
“Using the same config that I have loaded in the server” do you mean the config
file in /etc/kea? If so, can you use the write-config API to get the
configuration in memory and compare it again?
On May 12, 2025, at 2:43 AM, Diogo André de Assumpção via Kea-users
<kea-users@lists.isc.org> wrote:
Hi all,
I was exploring using the `config-hash-get` command to get a hash of the loaded
config and then compare with a candidate config to see if anything was change
before loading.
Using the same config that I have loaded in the server, I couldn’t get a hash
that matched the one we get via the `config-hash-get` command.
Is that something in the way I’m generating the hash? I’m passing the entire
dhcp4 config (ie. {"Dhcp4":…}) to the hash function.
I also noticed that if I do a `config-get` command, the output will contain
every optional field that is usually not present in a manually generated
config. Could that be the reason why the hashes don’t match?
Thanks,
– Diogo
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