--- title: 'Configuring a systemd-resolved caching DNS server' url: 'https://ra1ahq.blog/en/nastroika-keshiruyushego-dns-servera-systemd-resolved' markdown: 'https://ra1ahq.blog/en/nastroika-keshiruyushego-dns-servera-systemd-resolved.md' lang: en date: '2023-10-30' description: 'To speed up DNS name resolution, a local caching server is used. The difference (speedup) is 50-150 milliseconds per request for cached data. How to enable the service systemd-resolved in Linix Mint or Ubuntu? Installing DNS res' taxonomy: category: - blog tag: - Linux archives_month: - oct_2023 archives_year: - '2023' --- # Configuring a systemd-resolved caching DNS server 30 October 2023 11:11 ### Configuring a systemd-resolved caching DNS server [Linux](https://ra1ahq.blog/en/tag:Linux) 30 October 2023 11:11 To speed up DNS name resolution, a local caching server is used. The difference (speedup) is 50-150 milliseconds per request for cached data. How to enable the service `systemd-resolved` in Linix Mint or Ubuntu? 1. Installing DNS resolver for SystemD in Ubuntu/Linux Mint: ``` sudo apt install libnss-resolve ``` 2. Setting up the ResolveD service ``` sudo nano /etc/systemd/resolved.conf ``` Remove comments next to lines ``` [Resolve] DNS=192.168.1.1 FallbackDNS=77.88.8.1 Domains=~. DNSStubListener=yes # listens 127.0.0.53:53 ``` where 192.168.1.1 - replace with the IP address of the main router on the local network, instead of 77.88.8.1 you can specify any [public DNS server](https://ra1ahq.blog/en/besplatnye-dns-servery), the `DNSStubListener` option is required to use the additional address 127.0.0.53 for listening (see point 5 below). 3. Start and enable the ResolvedD service for DNS resolution ``` sudo systemctl start systemd-resolved sudo systemctl enable systemd-resolved ``` 4. Checking status ``` resolvectl status ``` 5. If you use the NetworkManager graphical tool to manage your network, you need to specify the following in the "Network Settings" (gear icon) IPv4 settings: ``` IPv4 -> DNS Server 127.0.0.53 ``` 6. Edit file `/etc/resolv.conf` sudo nano /etc/resolv.conf Add: ``` nameserver 127.0.0.53 ``` 7. Using the console utility resolvectl Utility **`resolvectl`** can be used for *service management* systemd-resolved.service and for *domain name resolution*. The most common command of this utility is **query HOST\_NAME** for name resolution, both IPv4 and IPv6. When used with the -t TYPE switch, where TYPE is a designation of the type of DNS record, for example, TXT records (certificates) versus regular A, AAAA records. A detailed description of the resolvectl command switches is available in the man resolvectl help pages. Examples of use: ``` resolvectl query ya.ru resolvectl query google.com -t AAAA ``` 7.1 Displaying the service status resolved ``` systemctl is-active systemd-resolved ``` Answer: "active" - the service is running. 7.2. Displaying statistics of calls to the local DNS cache ``` resolvectl statistics ``` Answer: ``` DNSSEC supported by current servers: no Transactions Current Transactions: 0 Total Transactions: 7606 Cache Current Cache Size: 136 Cache Hits: 2139 Cache Misses: 5493 DNSSEC Verdicts Secure: 0 Insecure: 0 Bogus: 0 Indeterminate: 0 ``` 7.3. Clearing the DNS cache using the resolvectl command in Linux: ``` resolvectl flush-caches ``` --- Sources: ** [systemd-resolve-command-not-found](https://askubuntu.com/questions/1409726/systemd-resolve-command-not-found-in-ubuntu-22-04-desktop) \*[systemd-resolved at wiki.ubuntuusers.de](https://wiki.ubuntuusers.de/systemd/systemd-resolved/) --- *Last modified: 09/01/2026 (line "Domains=~." and the line following it, changed paragraphs 5 and 6).* ### Related publications [ ![](https://ra1ahq.blog/images/f/3/a/2/c/f3a2c07ef5b32c0308ab703405a5a5ca87b75283-archer-ac600-728.webp) Installing the kernel driver for the TP-Link Wi-Fi adapter after updating the Debian OS ](https://ra1ahq.blog/en/ustanovka-draivera-yadra-dlya-wi-fi-adaptera-tp-link-posle-obnovleniya-os-debian) [ ![](https://ra1ahq.blog/images/d/2/5/c/7/d25c7282750b398f71041fb8b90640b692e7e4b8-decibelfmtitle.png) Linux Cinnamon Desktop Applets for Listening to Internet Radio Stations ](https://ra1ahq.blog/en/applety-dlya-rabochego-stola-linux-cinnamon-dlya-proslushivaniya-internet-radiostancii) [ ![No picture](https://ra1ahq.blog/user/themes/mytheme/images/no-image.png) Passing a parameter to a Linux module/driver ](https://ra1ahq.blog/en/peredacha-parametra-modulyu-draiveru-linux) [ ![](https://ra1ahq.blog/images/5/c/4/e/a/5c4ea9c8c3f0b4dd890116d8fe7cbadfdb9814ba-archer-ac600.webp) Installing the TP-Link Archer T600U Nano Wi-Fi adapter driver in Debian 13 "Trixie" ](https://ra1ahq.blog/en/ustanovka-draivera-wi-fi-adaptera-tp-link-archer-t600u-nano-v-debian-13-trixie) [ ![](https://ra1ahq.blog/images/b/f/f/0/f/bff0f99f5897e0420fac9a6eef7254247f39c29d-pulseaudio-equalizer.png) Installing the audio equalizer pulseaudio-equalizer-ladspa on Linux ](https://ra1ahq.blog/en/ustanovka-v-linux-ekvalaizera-zvuka-pulseaudio-equalizer-ladspa) [ Backward](https://ra1ahq.blog/en/sinkhronizaciya-vremeni-v-linux-ispolzovanie-sluzhby-sntp "Previuous page") [ Forward ](https://ra1ahq.blog/en/netplan-kak-zamena-etc-network-interfaces "Next page") ## Languages - 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