Questions tagged [hostname]
A hostname is the label given to a device connected to a computer network.
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2answers
48 views
How can I find out the hostnames of other computers in the same local network?
In my local wifi, I can find out the IP and MAC of another computer which also runs Lubuntu, and whose hostname is known to me.
$ sudo arp-scan olive
[sudo] password for t:
Interface: ...
0
votes
2answers
30 views
Why does Python 'gethostname()' return the entire FQDN when run on a FreeNAS server console?
I get this (FreeNAS 11.2-RELEASE-U1):
Python 3.6.5 (default, Dec 20 2018, 21:27:40)
[GCC 4.2.1 Compatible FreeBSD Clang 6.0.0 (tags/RELEASE_600/final 326565)] on freebsd11
Type "help", "copyright", ...
0
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2answers
50 views
How to access a device connected in local network with hostname?
I tried accessing a webpage in a server within the local network with the host name of the device followed by its folder path and the name of the file(it is a basic php file). In first system it ...
14
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2answers
2k views
Does a computer system (Linux) only have one host name?
hostname is used to display the system's DNS name, and to display or set its hostname or NIS domain name.
Does a computer system (Linux) only have one host name?
In virtual hosting, several host ...
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1answer
75 views
Generating default DKIM keys: Cannot determine host's domain name, so skipping default key generation
I'm following this guide
https://www.linuxtechi.com/configure-domainkeys-with-postfix-on-centos-7/
When I get to this section, it gives an error
# opendkim-default-keygen
Generating default DKIM ...
1
vote
1answer
50 views
Linux/Windows client resolve Linux hostname on LAN
According to Debian's RPi3 image wiki, I should be able to ssh into a Raspberry-Pi, with just the hostname. I shared internet from my Debian laptop, WiFi to the a Raspberry-Pi over Ethernet, but the ...
1
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1answer
157 views
Understanding why hostname -i returns strange IP address
I am referencing the following question because it's similar but not the same:
hostname -i returns strange result in linux
On my CentOS 7 system, I get a strange IP address from "hostname -i" after ...
0
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1answer
51 views
What is this random name in my command-line prompt? [duplicate]
I'm trying to figure out what this (obretschlt2-w7) is, from my command-line prompt. I'm using a conda environment, with the name µ_env, with my Username mu. However I can't figure out where the 2nd ...
7
votes
1answer
306 views
How to deal with underscores in hostnames?
I got DNS set up on my company's server and it works just fine, except I got problem with some phones. For example one of the phones is “Huawei P9 lite”, and it's hostname (set on the phone, no chance ...
2
votes
0answers
240 views
dnsmasq is not resolving local hostnames
I have a local Linux server running dnsmasq for my LAN. It has been working without issues for the last several years. I keep the operating system and packages regularly updated. After yesterday's ...
1
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1answer
585 views
How do I fix my problem with hostnamectl command. It cannot connect to dbus
I am running Debian 9.4. hostname works.
$ sudo strace -f hostnamectl
...snipped...
connect(3, {sa_family=AF_UNIX, sun_path="/var/run/dbus/system_bus_socket"}, 33) = -1 ENOENT (No such file or ...
0
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0answers
157 views
ssh to another user of the same host using dns domain
Is it a problem to ssh to another user of the same host using dns domain? I cannot conigure it. I cannot configure it to passwordless connection. Also when I am trying to connect with password the ...
2
votes
2answers
164 views
uptime Script help [closed]
I am looking to build a script that will log in to multiple servers using a host file and run uptime, hostname -I and hostname
Script so far
echo"" ;
echo "hostname:" $(ssh $HOST hostname) ;
echo "...
1
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0answers
509 views
ssh does not recognize host name defined in config file [closed]
My ssh can no longer resolve my hostname. Everything was working fine until I did a security update on my ubuntu v16.04. I try to do ssh <myhost> and receive the error
ssh: Could not resolve ...
1
vote
3answers
292 views
macOS Sierra (10.12.6) hostname command not appending “.local”
To be brief:
From what I understand the hostname command has an option -f. From the man page:
-f Include domain information in the printed name. This is the default behavior.
As it's the ...
1
vote
1answer
40 views
SSH connects but stays on the same machine [closed]
I've got an unusual problem at hand that I couldn't solve for 2 days.
I've got two KVM running on my real machine. One of them is named headnode and the second is named computenode. These machines ...
14
votes
2answers
3k views
What's the point of the hostnamectl command?
As opposed to editing /etc/hostname, or wherever is relevant?
There must be a good reason (I hope) - in general I much prefer the "old" way, where everything was a text file. I'm not trying to be ...
3
votes
1answer
64 views
How to change `ping from` value when pinging Linux server?
Content of hostname file in my server is:
# cat /etc/hostname
sub.mysite.com
But when I ping my CentOS 7 server it says:
# ping sub.mysite.com
64 bytes from sub ...
Even:
# ping ns1.mysite.com
...
1
vote
1answer
24 views
How to attach domain to RHEL7 using the shell?
I would like to know what files must I edit in order to add a domain on a RHEL7 machine?
Example:
Hostname: Server1
Domain Name: qwer.tyu.iop
Result:
Server1.qwer.tyu.iop
0
votes
1answer
275 views
CentOS Application Installer Updates failed “Cannot resolve hostname”
I attempted to run updates from the Application Installer and ran into the following error.
failed to download https://extensions.ognome.org//extension-query/?shell_version=3.22.3&page=1&...
0
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0answers
128 views
PC-name, localhost, hostname etc. on Fedora
Today I reinstalled Fedora and saw a strange name on the command line
[ekkl@37L4247F27-25 ~]$ uname -a
Linux 37L4247F27-25 4.16.15-300.fc28.x86_64 #1 SMP Tue Jun 12 00:42:35 UTC 2018 x86_64 x86_64 ...
2
votes
1answer
167 views
BIND as a DNS server host command is refused
I am attempting to run my host machine as a DNS server, it will also function as the gateway.
My /etc/named.conf is as follows:
options {
directory "/var/named/";
allow-query {127.0.0.1;...
1
vote
1answer
30 views
Is there a canonical method a host can use to self-rename?
Naming hosts and keeping track of them is a lot of work on a home network or on a test cluster of VMs.
Is there a canonical way to make a host self-rename from whatever name it was initially set with ...
1
vote
1answer
228 views
Suppress “Name or service not known” on ping
I have several Raspberry Pi's named numerically (pi0, pi1, etc). They have static IP addresses, but I wanted a simple tool to check on them and make sure they were online even if they got the wrong IP ...
0
votes
1answer
44 views
Set hostname via ssh error SCRIPT
im using this script to change hostname via ssh but i got some errors.
read -p "Insira o IP : " ip
read -p "Insira o nome do utilizador : " host
read -s -p "Insira a palavra passe : " oldpass
...
-1
votes
1answer
104 views
Setting up hostname, hosts & domain correctly [closed]
I'm new to this platform but I try to be as specific as possible. I researched quite a lot but every new answer just adds to the confusion at the moment.
I am running Debian on my first server with a ...
1
vote
1answer
46 views
Is it possible to display a different hostname, when a user logs in?
I have an issue where my customer used a different hostname naming convention than my company did, for the devices they purchased from us. Example:
We named the devices Lenny1, so the FQDN is lenny1....
0
votes
0answers
214 views
Cannot change hostname of raspberry pi in local network
I have a clean install of the debian-based OSMC os on a raspberry pi.
I've manually set a static IP:
$ ifconfig wlan0
wlan0: flags=-28605<UP,BROADCAST,RUNNING,MULTICAST,DYNAMIC> mtu 1500
...
0
votes
1answer
33 views
What is the best approach to find a system's domain name?
I use the following syntax in order to find the domain name on a Linux machine:
hostname | sed s'/\./ /g' | awk '{print $2}'
hostname
master02.sys65.com
hostname | sed s'/\./ /g' | awk '{print $2}'
...
1
vote
0answers
93 views
Is changing the system hostname on a server with a running MySQL / MariaDB service harmful?
I want to change the hostname of a running CentOS 7 server which is running MySQL (mysql Ver 15.1 Distrib 10.0.33-MariaDB, for Linux (x86_64) using readline 5.1). Although I can't find any sources ...
1
vote
1answer
51 views
How can I ping my dhcp server using hostname?
I've just configured a PC with a dhcp server and an apache server on it. I want to set a hostname to my server (i.g "myserver") in order to be able to access its web server by writing on the browser "...
0
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0answers
159 views
UFW blocks hostname lookup on LAN for ssh and ping
I'm experiencing a problem connecting to hosts on my LAN via their hostname only when UFW is enabled.
When UFW is enabled:
ssh <machine> gives the message:
ssh: Could not resolve hostname &...
1
vote
2answers
6k views
Could not reliably determine the server's fully qualified domain name
I was following this tutorial to setup two virtual hosts in Centos 7.
The issue is i am getting the following error while restarting the httpd.
[userme@server ~]$ sudo systemctl restart httpd....
1
vote
1answer
65 views
Changing system hostname makes samba being unaccessible
I found something weird in my debian 9 config.
I changed my hostname by editing /etc/hostname and rebooting from "myhost" to "myhost-hello".
Since this modification connecting to the machine via it'...
3
votes
1answer
2k views
Is /etc/init.d/hostname.sh still an option for debian stretch?
I changed the host name and went to make it stick, but my previous solution didn't work. I am using Linux raspberrypi 4.9.59-v7+ #1047 SMP Sun Oct 29 12:19:23 GMT 2017 armv7l GNU/L. Is there a new ...
1
vote
1answer
2k views
How the hostname resolution / lookup happens in Linux? [closed]
I am new to Linux and need to know how nslookup command resolves hostname?
what are the configuration files that are used by nslookup command - I need to know the exhaustive list of files that are ...
1
vote
1answer
2k views
SUSE Linux Enterprise 12: Change Hostname permanently
I want to change the hostname for a VM, but struggle to do it permanently. Already changed it via /etc/hosts and /etc/hostname, but did't work out. Does anyone have an advice? Thanks in advance.
1
vote
2answers
226 views
How can I log into a running docker instance?
poking docker to see how it works:
ubuntu@ip-172-31-14-19:~$
ubuntu@ip-172-31-14-19:~$ sudo docker run --net=host -d -t jmar71n/freepbx
...
1
vote
1answer
51 views
openSuSE prompt on AWS configuration
On an Amazon aws ec2 openSuSE instance:
thufir@ip-<ip>:~>
thufir@ip-<ip>:~> echo $PS1
\u@\h:\w>
thufir@ip-<ip>:~>
how do I set the prompt to something more friendly? ...
1
vote
1answer
941 views
Why isn’t the hostname command getting the FQDN from /etc/hostname? [duplicate]
I set the hostname.
# more /etc/hostname
kafka01.ocff4.com
The hostname is still as follows.
hostname
kafka01
I restart using the following command.
systemctl restart systemd-hostnamed
But ...
0
votes
1answer
224 views
Postfix myhostname change
I'm currently trying to change the myhostname field.
So, I have this situation:
My server doesn't need an Internet domain anymore, since it will be a local host server.
But I want to serve mail ...
0
votes
1answer
120 views
How do I change hostname in trueos
I want to change the hostname that was generated during installation. How do I do that in Trueos?
1
vote
1answer
150 views
How a Virtualbox ubuntu VM able to resolve another ubuntu VM's hostname.?
I have 2 Virtualbox VM's on which I have Ubuntu 15.
The hostnames are:
Machine 1: satya-VirtualBox
Machine 2: sam1-VirtualBox
Hosts file on machine 1-
But I am able to ping machine 2 from 1 using ...
0
votes
0answers
349 views
Validate hostname
As part of my script I have to validate a user input hostname. I am currently doing this.
nslookup $cloud_hostname 1> /tmp/.hostname_look_up
TEST_HOSTNAME=$(grep find /tmp/.hostname_look_up)
if [[...
0
votes
1answer
73 views
My Linux server forgets its host name every day
I have a Linux server
# uname -a
Linux site 3.12.39-47-default #1 SMP Thu Mar 26 13:21:16
UTC 2015 (a901594) x86_64 x86_64 x86_64 GNU/Linux
# lsb_release -a
LSB Version: n/a
Distributor ID: SUSE ...
6
votes
1answer
15k views
How to filter by host name in Wireshark?
Display filter in form ip.src_host eq my.host.name.com yields no matching packets, but there is traffic to and from this host.
DNS name is resolved successfully, and filters using ip addresses like ip....
1
vote
1answer
185 views
getnameinfo is not resolving IP
I have gateway installed on Ubuntu, and not able to get hostname for local IPs, using nslookup or programmatically using getnameinfo
nslookup gives:
fuad@URLF:~$ nslookup 192.168.1.107
Server: 127.0....
2
votes
2answers
1k views
How to block hostnames with wildcards or Regex?
Currently I uses a big /etc/hosts to block unwanted hostnames. But the file is getting bigger and bigger closing in on 700000 entries. The are many similar entries so I would like to use wildcards ...
1
vote
1answer
335 views
Changed hostname, now I can't run a tripwire check: “policy file does not match policy used to create database”
So due to problems with my hostname I just changed it. The problem with that is that in the tripwire configuration I left the hostname variable within the name of the dbfile and the local keyfile as ...
1
vote
2answers
1k views
Fedora 26 and fully qualified domain names?
I installed Fedora 26 for testing under GCC 7. F26 is installed in a 64-bit VirtualBox VM. I ran the following commands to configure the system post-install, and then rebooted:
localhost:~$ sudo ...
