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--- docker_notes:docker-dhcp [2024-02-24 Sat wk08 14:18] – [References] baumkp
+++ docker_notes:docker-dhcp [2024-08-31 Sat wk35 17:35] (current) – [DHCP testing] baumkp
@@ Line 1: / Line 1: @@
 {{tag>linux docker kea dhcp}}
 ======Docker - DHCP Server======
-Since mid 2023 I have been running a Docker ISC Kea Image using base Docker Alpine Linux images, with S6 init system. <fs x-small>(ISC Kea is a modern replacement for their DHCP.)</fs>  The main DHCP server runs on my main server and I have an automatic fall over back up on my separate Linux router.  I basically followed the Kea template [[https://kea.readthedocs.io/en/latest/arm/config-templates.html#template-home-network-of-a-power-user|Home Network of a Power User]].  I was never quite sure I had the automatic fall over back-up working. On 2023-01-02 I modified a configuration file on the primary server with a syntax error. Today, 8 days later I notice millions of lines of errors on my log files.  Sure enough the backup had simply been working.  I fixed up the simple syntax error and the primary server took back over.  Everything basically worked as expected.
+Since mid 2023 I have been running a Docker ISC Kea Image using base Docker Alpine Linux images, with S6 init system. <fs x-small>(ISC Kea is a modern replacement for their DHCP.)</fs>  The main DHCP server runs on my main server and I have an automatic fall over back up on my separate Linux router.  I basically followed the Kea template [[https://kea.readthedocs.io/en/latest/arm/config-templates.html#template-home-network-of-a-power-user|Home Network of a Power User]].  I was never quite sure I had the automatic fall over back-up working. On 2023-01-02 I modified a configuration file on the primary server with a syntax error, 8 days later I notice millions of lines of errors on my log files.  Sure enough the backup had simply been working.  I fixed up the simple syntax error and the primary server took back over.  Everything basically worked as expected.
 ISC also has a project for a simple GUI interface primarily for Kea and basic for Bind9.  There is apparently no Alpine package yet for Stork.
@@ Line 36: / Line 36: @@
 ====DHCP testing====
-''%%sudo nmap --script broadcast-dhcp-discover%%'' will test the DHCP servers on the same network.
+''%%sudo nmap --script broadcast-dhcp-discover%%'' will test for DHCP servers on the same network. It will only report the first DHCP server discovered.
 ===Reference===
@@ Line 74: / Line 75: @@
   *''docker attach kptr-kea-1'' to attach to running container
   *''kea-dhcp4 -v'' To check running version
 =====References=====
   *KPTree.net's bare metal implementation of [[linux_router:dns_dhcp|dns - dhcp]], based upon ISC Bind9 and DHCP on Debian 10 <fs xx-small>(was originally Ubuntu)</fs>.