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https://github.com/wuyuansushen/systemd-resolved
Next generation DNS resolve scheme since fedora 33.
https://github.com/wuyuansushen/systemd-resolved
Last synced: 3 months ago
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Next generation DNS resolve scheme since fedora 33.
- Host: GitHub
- URL: https://github.com/wuyuansushen/systemd-resolved
- Owner: wuyuansushen
- Created: 2020-11-24T05:21:12.000Z (almost 4 years ago)
- Default Branch: main
- Last Pushed: 2022-10-03T18:42:07.000Z (about 2 years ago)
- Last Synced: 2024-06-21T13:31:14.421Z (5 months ago)
- Homepage:
- Size: 15.6 KB
- Stars: 2
- Watchers: 2
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
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- awesome-starred - wuyuansushen/systemd-resolved - Next generation DNS resolve scheme since fedora 33. (others)
README
# systemd-resolved
Next generation DNS resolve scheme.
## 0. Recommended DNS servers
- IPv4
- 208.67.222.222
- 8.8.4.4
- IPv6
- 2001:4860:4860::8888
- 2620:119:53::53
## 1.Examine DNS status
```
resolvectl status
```
Tip: With systemd-resolved.service, 127.0.0.53#53(127.0.0.53) is the local DNS server for resolving.
## 2.Configure **Global** interface DNS
```[bash]
sudo vim /etc/systemd/resolved.conf
```
In *[Resolve]* section, modify the DNS ip:
```[vim]
[Resolve]
DNS=208.67.220.220 208.67.222.222
```
## (Advanced)Custom **Global** DNS target
```[bash]
sudo vim /etc/systemd/resolved.conf
```
In *[Resolve]* section, modify the **Domains**:
```[vim]
[Resolve]
Domains=~. ~github.com ~microsoft.com
```
In *Domains* field, Specify which domain you want to reolve prefix with `~`.
> :warning: `~.` means resolve the *root DNS(.)*, but there are usually two `~.` value of different items shown by `resolvectl status`. One is **Golbal**, another is **Link ** which is dynamic set by receiving over DHCP, information provided via NetworkManager.
> :hankey: Usually, **Link [NUM]** interface (generated by DHCP, local dns) is faster than **Global**, so software prefer to use it because both have `~.` value in *Domains* field. That's why **Global** need to speficy **Domains** value in `/etc/systemd/resolved.conf` file.
## Active configuration
```[bash]
systemctl restart systemd-resolved.service
```
## 3.Configure **Link [NUM]** interface DNS
Its DNS configuration is from NetworkManager, for example:
```[bash]
Link 3 (wlp3s0)
Current Scopes: DNS LLMNR/IPv4 LLMNR/IPv6
Protocols: +DefaultRoute +LLMNR -mDNS -DNSOverTLS DNSSEC=no/unsupported
Current DNS Server: 208.67.222.222
DNS Servers: 1.1.1.1 208.67.222.222 208.67.220.220
DNS Domain: ~.
```
NetworkManager Configure file:
Previous:
```[bash]
cd /etc/sysconfig/network-scripts/ #Location
man nm-settings-ifcfg-rh #Reference
```
Present:
```[bash]
cd /etc/NetworkManager/system-connections/ #Location
man nm-settings #Reference
```
Custom DNS ip and abandon ISP DNS ip
```[vim]
dns=1.1.1.1;208.67.222.222;208.67.220.220; #semicolon(;)
ignore-auto-dns=true
```
> :warning: Use **semicolon(;)** to split multiple DNS ip, if any.
## Active configuration
```[bash]
systemctl restart NetworkManager.service
```