It also requires other computers to know the DNS search suffix that your router's DNS uses. So if you just now renamed the Pi, you must restart its DHCP client and have it get a new lease. Note that this method doesn't work with static IP addresses (use a DHCP reservation if you want that) and it doesn't automatically detect hostname changes. lan or something equally made-up).Ĭorporate networks and custom DHCP servers usually won't have such automatic registration. If the Pi uses DHCP, it will advertise its hostname when sending the DHCP lease request – most home routers will then publish it in a local DNS domain (e.g.home or. Usually your home router will provide internal DNS. Often they need to be manually enabled, especially on Linux. IP LANs do not have a universal method for local hostname lookup – there are several protocols but they're more like add-ons. It requires manual intervention and if the IP address changes, guess what? More manual intervention. In general, editing a Hosts file ( /etc/hosts/) is a horribly kludgey way of doing this. And perhaps restart the Avahi service like this: sudo service avahi-daemon restart If you don’t see it show up immediately, wait a minute or so and ping again. Just ping it from another device on your network like this: ping rasp01.localĪnd you should see it resolve to that device’s IP address. Installing it is quite simple: sudo apt-get install avahi-daemon avahi-utils Īnd that should be that! Then whatever the hostname of that device is can be reaching on your network at. The daemon registers local IP addresses and static services using mDNS/DNS-SD and provides two IPC APIs for local programs to make use of the mDNS record cache the avahi-daemon maintains.” “The Avahi mDNS/DNS-SD daemon implements Apple’s Zeroconf architecture (also known as ‘Rendezvous’ or ‘Bonjour’). The avahi-daemonbasically sets a multicast hostname on the Raspberry Pi that should be broadcast across your LAN: Just install avahi-daemon on the Raspberry Pi. Server instead of installing Avahi on the nodes as suggested in an answer below? Seen from this perspective would it be "simpler" to install my own internal DNS: My experience is that networking already becomes quite more complex when adding just Docker to the mix also confirmed by this article: Where the user apparently got it to work with *.local eventually.Īlso, the Raspberry Pi 4 will be part of a Raspberry Picluster where I will install docker/kubernetes (lab fun). It’s fine if I have to suffix it with *.local but that does not seem to work. Ssh: Could not resolve hostname rasp01.local.: Name or service not known Ssh: Could not resolve hostname rasp01.local: Name or service not known # The following lines are desirable for IPv6 capable hostsīut when I try to use that hostname when I SSH to the Raspberry Pi from my laptop on the same LAN (also running Ubuntu) I get: $ ssh Could not resolve hostname rasp01: Name or service not known After I have rebooted the Raspberry Pi and logged into it I have this: cat /etc/hosts Instead of having to type that IP each time I would like to be able to SSH to it using the hostname: rasp01. I have connected a Raspberry Pi 4 running Ubuntu 20.04 to my local LAN over Wi-Fi.įrom my laptop I can SSH to the Raspberry Pi just fine with: $ ssh
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