目前在使用dnspod更新ddns ip,但是dnspod免费账号ttl最低设置为600,对于要求及时更新的可自己搭建dns服务器更新ddns,本文使用knot,相对bind有占用资源小,配置简单优点。
apt install knot knot-dnsutils
生成远程更新验证key并添加到配置文件,首行格式用于客户端knsupdate验证key:
keymgr -t key_knsupdate
# hmac-sha256:key_knsupdate:USWfnZKqVwfbv/rcaJtyJA+Evj9eS6v23BmXFO0h0r0=
key:
- id: key_knsupdate
algorithm: hmac-sha256
secret: USWfnZKqVwfbv/rcaJtyJA+Evj9eS6v23BmXFO0h0r0=
knot配置文件,knsupdate和主从同步可使用key或ip认证:
server:
identity:
version:
nsid:
rundir: "/run/knot"
user: knot:knot
#listen: [ 0.0.0.0@53, 127.0.0.1@53, ::1@53 ]
listen: 192.168.1.1@53
log:
- target: syslog
any: info
# hmac-sha256:key_knsupdate:USWfnZKqVwfbv/rcaJtyJA+Evj9eS6v23BmXFO0h0r0=
key:
- id: key_knsupdate
algorithm: hmac-sha256
secret: USWfnZKqVwfbv/rcaJtyJA+Evj9eS6v23BmXFO0h0r0=
remote:
- id: slave
address: 192.168.2.1@53
key: key_knsupdate
- id: master
address: 192.168.1.1@53
key: key_knsupdate
acl:
- id: acl_slave
#address: 192.168.2.1
key: key_knsupdate
action: transfer
- id: acl_master
#address: 192.168.1.1
key: key_knsupdate
action: notify
- id: acl_knsupdate
#address: [ 127.0.0.1, 192.168.1.1 ]
key: key_knsupdate
action: update
template:
- id: default
storage: "/var/lib/knot"
file: "%s.zone"
zone:
# Master zone
- domain: ddns.haiyun.me
notify: slave
#acl: acl_slave
acl: [ acl_slave, acl_knsupdate ]
knot dns主从同步配置,以上配置文件zone为master,slave要将zone替换为:
zone:
# Slave zone
- domain: ddns.haiyun.me
master: master
zonefile-load: whole
acl: acl_master
zone文件:
cat /var/lib/knot/ddns.haiyun.me.zone
;; Zone dump (Knot DNS 2.7.8)
ddns.haiyun.me. 3600 SOA ns1.haiyun.me. admin.haiyun.me. 2021020415 60 60 1800 60
ddns.haiyun.me. 3600 NS ns1.haiyun.me.
ddns.haiyun.me. 3600 NS ns2.haiyun.me.
1.ddns.haiyun.me. 10 A 1.1.1.1
1.ddns.haiyun.me. 10 AAAA ::1
www.ddns.haiyun.me. 10 A 1.1.1.1
;; Written 6 records
;; Time 2021-02-04 17:52:03 CST
使用knsupdate动态更新dns ip:
cat > cmd.txt << EOF
server 127.0.0.1
zone ddns.haiyun.me.
del 1.ddns.haiyun.me.
add 1.ddns.haiyun.me. 10 A 1.1.1.1
add 1.ddns.haiyun.me. 10 AAAA ::1
show
send
answer
quit
EOF
knsupdate -y "hmac-sha256:key_knsupdate:USWfnZKqVwfbv/rcaJtyJA+Evj9eS6v23BmXFO0h0r0=" cmd.txt
或通过knotc更改dns记录:
knotc zone-begin ddns.haiyun.me
knotc zone-set ddns.haiyun.me www 10 A 1.1.1.1
knotc zone-commit ddns.haiyun.me
参考:
https://www.knot-dns.cz/docs/2.7/html/reference.html
https://www.knot-dns.cz/docs/2.7/singlehtml/index.html
https://en.wikipedia.org/wiki/Comparison_of_DNS_server_software
https://blog.groverchou.com/2020/08/10/Knot-DNS-%E4%BD%BF%E7%94%A8%E6%95%99%E7%A8%8B/
标签:dns, bind, ddns, knot, 安装配置ddns dns服务器