Questions tagged [ubuntu]
Ubuntu Linux is a Debian derivative that aims to bring Linux mainstream. Questions on this site should generally refer to Ubuntu Server. Note that http://askubuntu.com is specifically dedicated to Ubuntu questions.
14,669
questions
0
votes
0answers
30 views
Should I remove almost all users in Ubuntu?
I want to defend my ubuntu server from unauthorized logins. I have an all users list. There are a lot of users. You can see a list on screenshot. Should I remove all the users except mine?
I want to ...
0
votes
0answers
25 views
Wordpress multisite subdomain resolution
I have a Wordpress multisite (I am using Apache 2.4 on an Ubuntu 20.04 server on AWS). The structure is a main site -- say mainsite.com -- and three subdomains:
aaa.mainsite.com
bbb.mainsite.com
ccc....
-1
votes
0answers
11 views
Can't find my network printer
I have a Canon TS6350 and Lubuntu 18.04. I was able to install the official drivers and print over USB. I have also successfully connected the printer to the router over the wifi, on address 192.168....
0
votes
1answer
24 views
Ansible server can't ssh to CentOS 8 machine through -m ping
Currently i'm working on an Ansible server that has 4 hosts (3Ubuntu and one CentOS). I can SSH to them without problems. But when i try to run:
ansible servers -m ping
this wel be the output:
[email protected]
0
votes
1answer
27 views
Fail2ban not banning ip address
I installed fail2ban on a Ubuntu 20.04 server. I've followed some articles on how to configure it but it doesn't work. I've made 10 incorrect login attempts and still didn't get banned.
/etc/fail2ban/...
1
vote
0answers
44 views
Cannot access guest webserver from host
Here is my configuration, I have a Ubuntu 20.04 host machine with a kvm virtual machine holding a webserver. I set the folowing rules with iptables in order to root the ports 80 and 443 of the host ...
0
votes
0answers
13 views
How to drop dhcp ip assignated when using clevis/tang on Ubuntu 20.04
I unlock my drive with clevis/tang on an Ubuntu server (NBDE). It works fine, but even if my server is configured to use a static ip in /etc/netplan/01-netcfg.yaml, my network interface also listen on ...
0
votes
0answers
26 views
Ubuntu Server 20.04 freeze/unresponsive, kernel BUG: Bad page state in process
Server Information:
Distributor ID: Ubuntu
Description: Ubuntu 20.04.1 LTS
Release: 20.04
Codename: focal
today I noticed my new Server crashed/froze. It did not accept any ssh ...
0
votes
1answer
17 views
Postfix - Can Send / Receive Localy - Send External - Not receive from external
I just finish configuring my own mail server using this guide:
LinuxBabe Guide
At the start all was working but now I can not receive mail from external.
Here is my configuration file:
https://hatebin....
0
votes
1answer
29 views
Ubuntu 20.04 Modoboa: dovecot.service failed, and Error: Connection to IMAP server failed: [Errno 111] Connection refused
Impacted versions
Distribution: Ubuntu 20.04
Arch: 32 Bits
Database: PostgreSQL
Steps to reproduce
Installed Modoboa through the installer. (didn't saw any errors)
Installed SSL certificate through ...
0
votes
0answers
34 views
Wireguard VPN can't access internet and LAN
I have a server running Ubuntu 20.04 and wireguard 1.0.20200513-1~20.04.2. I installed the wireguard app on my phone (Android Samsung S20+) and disabled WIFI and connected to 4G. When the VPN is ...
0
votes
1answer
73 views
Server not accessible from the internet despite everything
I don't have a static ip, so it changes sometimes, meaning I have to change things like port forwarding rules for my web server and SSH, etc. However this time, despite everything, it's not accessible ...
-1
votes
0answers
19 views
SSH/SCP with public key AND password authentication SIMULTANEOUSLY
The server I'm attempting to SCP a file to requires BOTH a password AND a public/private key. I'm trying to send the file from Ubuntu but I can only get scp to use either key OR password, but not both....
1
vote
1answer
57 views
Ubuntu 20.04 update destroyed Java/Mysql app performance
I'm working on a Java / MySQL app and test runs of batch processing were taking 3-4seconds on Ubuntu 18.04.
I made the upgrade to Ubuntu 20.04 last night, and kept the same mysql conf file, and now ...
0
votes
0answers
36 views
automatic SSH login with ssh key's dont work after sudo
I have an Ansible server with 3 ubuntu servers (hosts). So i want to be able to logon to those servers by typing in the SSH key password once. I have edited my .bashrc with an alias.
alias ssha='eval $...
