A Dnsmasq-controller for Kubernetes, implemented in go using kubebuilder.
- DnsmasqOptions
- DnsHosts
- DhcpHosts
- DhcpOptions
| Flag | Type | Required | Description |
|---|---|---|---|
-cleanup |
bool | false | Cleanup Dnsmasq config directory before start. |
-conf-dir |
string | false | Dnsmasq config directory for write configuration to. (default "/etc/dnsmasq.d") |
-controller |
string | false | Name of the controller this controller satisfies. (default "") |
-development |
bool | false | Run the controller in development mode. |
-dhcp |
bool | false | Enable DHCP Service and configuration discovery. |
-dns |
bool | false | Enable DNS Service and configuration discovery. |
-enable-leader-election |
bool | false | Enable leader election for controller manager. Enabling this will ensure there is only one active controller manager. |
-kubeconfig |
string | false | Paths to a kubeconfig. Only required if out-of-cluster. |
-log-level |
string | false | The log level used by the operator. (default "info") |
-metrics-addr |
string | false | The address the metric endpoint binds to. (default ":8080") |
-sync-delay |
int | false | Time in seconds to syncronise Dnsmasq configuration. (default 1) |
-watch-namespace |
string | false | Namespace the controller watches for updates to Kubernetes objects. All namespaces are watched if this parameter is left empty. |
-- |
array | false | Additional command line arguments for Dnsmasq may be specified after -- (read dnsmasq-man for more details) |
# CRDs
kubectl apply -k config/crd/bases
# RBAC
kubectl apply -k config/rbac
# DNS-server (for infra.example.org)
kubectl apply -k config/dns-server
# DHCP-server
kubectl apply -k config/dhcp-server
# Add dnsmasq role to your nodes
kubectl label node <node1> <node2> <node3> node-role.kubernetes.io/dnsmasq=Global DHCP-configuration:
---
apiVersion: dnsmasq.kvaps.cf/v1beta1
kind: DhcpOptions
metadata:
name: default-network-configuration
spec:
controller: ""
options:
- key: option:router
values: [192.168.67.1]
- key: option:dns-server
values: [192.168.67.1]
- key: option:domain-name
values: [infra.example.org]
- key: option:domain-search
values: [infra.example.org]
---
apiVersion: dnsmasq.kvaps.cf/v1beta1
kind: DnsmasqOptions
metadata:
name: default-matchers
spec:
controller: ""
options:
- key: dhcp-range
values: [192.168.67.0,static,infinite]
- key: dhcp-match
values: [set:iPXE,"175","39"]
- key: dhcp-match
values: [set:X86PC,option:client-arch,"0"]
- key: dhcp-match
values: [set:X86-64_EFI,option:client-arch,"7"]
- key: dhcp-match
values: [set:X86-64_EFI,option:client-arch,"9"]Global DNS-configuration:
---
apiVersion: dnsmasq.kvaps.cf/v1beta1
kind: DnsmasqOptions
metadata:
name: global-dns
spec:
controller: ""
options:
- key: srv-host
values: [_kerberos-master._tcp.infra.example.org,freeipa.example.org,"88"]
- key: srv-host
values: [_kerberos-master._udp.infra.example.org,freeipa.example.org,"88"]
- key: srv-host
values: [_kerberos._tcp.infra.example.org,freeipa.example.org,"88"]
- key: srv-host
values: [_kerberos._udp.infra.example.org,freeipa.example.org,"88"]
- key: srv-host
values: [_kpasswd._tcp.infra.example.org,freeipa.example.org,"464"]
- key: srv-host
values: [_kpasswd._udp.infra.example.org,freeipa.example.org,"464"]
- key: srv-host
values: [_ldap._tcp.infra.example.org,freeipa.example.org,"389"]
- key: srv-host
values: [_ntp._udp.infra.example.org,129.6.15.28,"123"]
- key: srv-host
values: [_ntp._udp.infra.example.org,129.6.15.29,"123"]
- key: txt-record
values: [_kerberos.infra.example.org,EXAMPLE.ORG]Netboot-server configuration with tag ltsp1:
---
apiVersion: dnsmasq.kvaps.cf/v1beta1
kind: DhcpOptions
metadata:
name: ltsp1
spec:
controller: ""
options:
- key: option:server-ip-address
tags: [ltsp1]
values: [192.168.67.11]
- key: option:tftp-server
tags: [ltsp1]
values: [ltsp1]
- key: option:bootfile-name
tags: [ltsp1,X86PC]
values: [ltsp/grub/i386-pc/core.0]
- key: option:bootfile-name
tags: [ltsp1,X86-64_EFI]
values: [ltsp/grub/x86_64-efi/core.efi]DHCP-client for network booting using assigned tag ltsp1:
---
apiVersion: dnsmasq.kvaps.cf/v1beta1
kind: DhcpHosts
metadata:
name: netboot-client
spec:
controller: ""
hosts:
- ip: 192.168.67.20
macs:
- 94:57:a5:d3:b6:f2
- 94:57:a5:d3:b6:f3
clientIDs: ["*"]
setTags: [ltsp1]
hostname: node1
leaseTime: infiniteAdd A, AAAA and PTR records to the DNS:
---
apiVersion: dnsmasq.kvaps.cf/v1beta1
kind: DnsHosts
metadata:
name: netboot-client
spec:
controller: ""
hosts:
- ip: 192.168.67.20
hostnames:
- node1
- node1.infra.example.org- Go 1.13 or later
- Kubebuilder 2.3.1
- Kubernetes cluster
make install
make runmake test
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