Differences

This shows you the differences between two versions of the page.

--- userdoc:guest_lxc_container_pihole [2020/05/31 21:28]
abelbeck
+++ userdoc:guest_lxc_container_pihole [2022/01/07 10:20] (current)
mkeuter
@@ Line 3: / Line 3: @@
 The [[https://pi-hole.net/|Pi-hole]] project is a "DNS sinkhole" that protects your devices from unwanted content, without installing any client-side software.
-Pi-hole is a perfect example to use with AstLinux within a LXC.  Begin as with the "Quick Start Guide" but use the name ''pi-hole''.
+Pi-hole is a perfect example to use with AstLinux within a LXC.
-First, it is assumed the ''lxcbr0'' interface is setup per the above **[[userdoc:guest_lxc_container#quick_start_guide|LXC Quick Start Guide]]** -> Enable LXC Support.
+**Resource Usage:** (minimum)
+  * Memory: 50 MB
+  * Storage: 0.7 GB
+\\
+First, it is assumed the ''lxcbr0'' interface is setup per the **[[userdoc:guest_lxc_container#quick_start_guide|Quick Start Guide]]** -> Enable LXC Support.
 Then from the CLI:
@@ Line 11: / Line 16: @@
   lxc-create -t download -n pi-hole -- -d debian -r buster -a amd64 --no-validate
-  service lxc init
+  service lxc restart
   lxc-attach pi-hole
@@ Line 48: / Line 53: @@
   # choose "Update"
-The Pi-hole LXC container uses about 40-50 MB of RAM.
+\\
+!!Related Info ->!! **[[userdoc:guest_lxc_container|LXC container in AstLinux]]**
+\\
+**Override default DHCP dns-server option**
+By default, the DHCP server (dnsmasq) offers the ''dns-server'' IP address using the gateway address for that subnet.  With Pi-hole you may want all DHCP clients in a subnet to use the Pi-hole server for DNS.  You can override the default settings by editing your ''/mnt/kd/dnsmasq.static'' file with the following:
+  ## Override default dns-server option
+  dhcp-option=lan,option:dns-server,192.168.200.10
+  #dhcp-option=lan2,option:dns-server,192.168.200.10
+  #dhcp-option=lan3,option:dns-server,192.168.200.10
+  #dhcp-option=lan4,option:dns-server,192.168.200.10
+  #dhcp-option=dmz,option:dns-server,192.168.200.10
+Replace the ''192.168.200.10'' IP address with your Pi-hole server's static address and uncomment for each subnet you want it to apply.  In the web interface, select "Restart DNS & DHCP" to apply the change to the dnsmasq configuration.
+\\
+**Pi-hole Interface Settings Config**
+Newer versions (2021/12) of Pi-hole default to "Interface Settings" set to "Allow only local requests", which does not work on an LXC container with an interface attached to an internal AstLinux ''lxcbr0'' bridge.  You will know this is an issue when no DNS is received and Pi-hole dnsmasq logs "Ignoring query from non-local network".
+One solution is to change the Pi-hole Interface Setting from "Allow only local requests" to "Respond only on interface ...".