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.

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Caddy failed to obtain cert acme 429 Ubuntu Docker

Currently I have laravel api on my docker container. I can curl the api project on my docker host using curl -k -v https://172.17.0.1:8080/api/login The api is accessible for both docker container ...
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1answer
17 views

Two network adapters one gateway (UBUNTU)

I have a regular LAN adapter and a PoE adapter on my computer. I have an IP camera connected to the PoE port and on the regular one I am connected to my router. I can access my computer through the ...
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8 views

Altermime only works on webmail (postfix + amavis)

I've seen other references to this issue online, but they pertain to other mail servers. In my case, I'm using Postfix and Dovecot, per Linode's instructions. My stack includes postfix, dovecot, ...
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1answer
21 views

Why is Apache creating so many internal dummy connections? CPU usage issues affecting server performance

Trying to get on top of some CPU usage issues and investigate possible malicious activity. As part of this I am curious about lots of dummy connections in the Apache logs. What is the origin of these ...
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11 views

why modify config files before purge?

I was want to remove cloud-init and found instructions to enter the following commands and reboot (on a few sites: echo 'datasource_list: [ None ]' | sudo -s tee /etc/cloud/cloud.cfg.d/90_dpkg.cfg ...
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1answer
26 views

wordpress fails to connect to mysql [closed]

I have an ubuntu 18.04 server with the following: php 7.4 Apache 2.4.41 Mysql 8.0.18 Wordpress 5.3 For who knows what reason, I'm unable to get WP to connect to the DB. The DB is hosted locally. I ...
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22 views

Customizing Ubuntu 18 for protecting data [closed]

Is there any way to display and give access to only the browser on Ubuntu 18.04? I want the whole system to be protected and my use case anyway needs only the browser. To give a clear picture, I want ...
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33 views

PostgreSQL can't bind to docker ip at boot (Cannot assign requested address)

I am running PostgreSQL on the host machine. An application inside of a docker container should be able to communicate with the database. Since postgres is by default only listening for connections on ...
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1answer
49 views

port forwarding with rules on ubuntu 18.04

I'm having a VM where port 80 is consumed by apache tomcat (host.nvoids.com). and I'm having apache2 php running at port 8020 which is a wordpress blog (host.nvoids.com:8020) I want when somebody ...
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20 views

Apache server port forwarde not working outside the network

I have an apache server running on Ubuntu 16.04 and which works fine with http://localIP:8082 and http://publicIP:8082 inside the network. But when I try from outside the network the link not working. ...
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1answer
34 views

How to configure custom nameservers HAproxy?

I'm setting VPS infrastructure for a shared script project using HAproxy with three nodes. What I want is when clients point their domains to my nameservers like ns1.abcd.com and ns2.abcd.com, the ...
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18 views

NFS Server not responding when Mac is mounting

I've setup a NFS Server on a Ubuntu 18.04 machine. The problem is when I mount it on a MacBook Pro, and move files from Mac's disk to the mounted foulder, the system freezes. Looking at the logs on ...
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1answer
22 views

Laravel - Server stack (RAM or CPU) [closed]

I've been asking myself a question for a week but I can't decide. I have to choose between two server stack for my application but opinions differ on blogs. Server 1 : 4 vCore(s) From 3 GHz 8 GB of ...
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64 views
+50

Nginx hitting worker_connection limit

I'm managing an Nginx server that keeps occasionally dropping a bunch of connections, after inspecting the logs I can see that the worker_connections limit is being hit e.g. 2019/12/06 08:37:09 [...
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2answers
101 views

is it possible to host multiple server that have different IPs on the same port such as 80? [closed]

I am trying to setup multiple website domains, but from different servers and because they are different servers they have different IPs, I am wondering if I could port forward each domain to 80, so ...
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13 views

Could not connect retrying 3 Ubuntu [closed]

Could not connect, retrying (3/3)... The VM serial console output may provide details to aid in troubleshooting connection problems. See our help document for other possible causes of this issue. You ...
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22 views

How do I make APT ignore the validity of the Release file?

I'm getting these errors whenever I try to run apt update: E: Release file for http://de.archive.ubuntu.com/ubuntu/dists/bionic-updates/InRelease is not valid yet (invalid for another 244d 19h ...
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14 views

Adding domain on Ubuntu Server 16.04

I want to force my domain voxbook.pl points to my VPS bought in other hosting company. I've changed A record of my domain to VPS IPv4 address 192.166.219.236 voxbook.pl. 0 A 192.166.219.236 ...
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35 views

How to configure RAID-5 for OS root (Ubuntu Server 18.04)

I have a fresh dedicated server I have provisioned running Ubuntu Server 18.04 and with 3x480GB SSDs (no hardware RAID controller though). The UI of the hosting provider will not allow the “/boot” or “...
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3answers
64 views

Ubuntu GRUB installation failed

I am currently in the process of setting up an Ubuntu server but I ran into a few problems... after setting up RAID 0 (two 160GB drives) I tried to install Ubuntu server 18.04.3 LTS but it failed ...
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1answer
43 views

Service failed to start because ernvironment variable is missing

I am trying to start Geoserver as a systemd service using this script: (using ubuntu 16.04) [Unit] Description=Geoserver After=network.target [Service] Type=simple ExecStart=/home/ermis/geoserver/...
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19 views

Ubuntu, vpn, RSA SecurID, token

Issue, I tried setup and connect to vpn, but nothing happened. I have this information about vpn. authentication method: SecurID; SecurID authentication: PinPad. Question, is possible connect to ...
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17 views

Ubuntu LAMP server suddenly refuses connections

I'll start off with the setup: Ubuntu 18.04 Server with LAMP Stack with WordPress VM in a Proxmox 5 Hypervisor 1 OB 1Gb NIC (pve Gui) 3 TPLINK 1Gb NIC 1 quad port Intel NIC Domain hosted through ...
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1answer
23 views

DigitalOcean Ubuntu droplet not serving port 80

I have a simple Python server on a DigitalOcean Ubuntu droplet that should serve the index.html file in the /dist folder: port = 8000 os.chdir(os.path.join(os.path.dirname(__file__), 'dist')) Handler ...
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7 views

route l2tp server to openvpn client

i configured l2tp/ipsec server on ubuntu also i installed openvpn client on this server i need when l2tp client connect to this server traffic forward to openvpn and client get openvpn server ip ...
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20 views

Vultr VPS Ubuntu Apache2 - Long time loading webpage end up connection reset [closed]

I have installed LAMP over Ubuntu and uploaded my php application inside it. It work perfectly but after some browsing suddenly the browser stay loading the page for more than 5 or 10 mins and finally ...
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2answers
64 views

Debug HTTPS hanging in Pulse Secure SSL VPN Tunnel

I have a Pulse VPN Client running in Ubuntu 18.04 and facing problems when connecting over HTTPS to websites over the VPN. SSH and ping work fine. Chrome and Firefox both hang, 'Establishing secure ...
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1answer
43 views

How do I route traffic through another server?

I have two linux (Ubuntu) servers, A and B. Server A has access to the internet, B does not. The servers can communicate with each other via their respective (separate) default gateways. I can access ...
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1answer
38 views

How to login to a Linux server without SSH key?

I had setup a SSH key to login into my linux server but the SSH public and private key have now been deleted from my personal computer. How can I login into my Linux server with the username and ...
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17 views

Why I can not register gitlab-runner? 10.0.2.3:53: server misbehaving

I have setup Gitlab server on My Vagrant VM. When I try to register sudo docker exec -t -i gitlab-runner gitlab-runner register I have problems ERROR: Registering runner... failed ...
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1answer
82 views

can I get guidence with setting up a subdomain? [closed]

Can someone actually give me the steps on how to create a subdomain and not link me to some random ressources? I have a TLD and run a site on that, but I want create a subdomain for it and install ...
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1answer
19 views

How to Change Default System Wide UMASK on Ubuntu 18.04?

The default umask on 18.04 LTS is 0022. I want to set it to 0027 system wide. So for example when logrotate renames old log files, it respects the 0027 umask. There are no logins on the system only ...
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8 views

Spacewalk Ubuntu repositories synchronization

I have a Spacewalk server installed in a CentOS 7 machine with 2 created channels, one for CentOS systems and another one for Ubuntu systems. Repositories synchronization for CentOS is working fine ...
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3answers
152 views

How do I limit new users from accessing the GUI application

Existing setups has Login's are connected to Active directory where new user's are created. My task is to limit the new users from accessing the apps. I would like to seclude them to use ...
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1answer
23 views

How to connect a GigE camera directly to a computer? [closed]

We have a GigE camera attached to our network, capturiung images from a Python program and processing them for a computer vision task. The camera receives its IP address from our DHCP server, as usual,...
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3answers
65 views

Unable to start Docker based on Ubuntu or Debian

I tried to create my own container based on Ubuntu (and the same with Debian). I use docker-compose to manage my containers and I use dockerfile to create my container. When I use the docker-compose ...
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0answers
29 views

how to make sendmail not deliver locally for certain users

I am using sendmail to send emails via PHP from my webserver. Email for the actual inboxes is hosted elsewhere. My hostname is set in /etc/hosts When mail is sent, and there is an error, it comes ...
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1answer
34 views

Docker SSL working on container but not accessible in host?

Currently I have laravel project on my docker instance. But the problem is, SSL accessible only for that container and I can check it using this command curl --insecure https://127.0.0.1:4021/api/...
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2answers
47 views

Check if ports are allowed in Firewall ubuntu

Currently I'm trying to setup my ssl in docker instance. I'm trying to check if these ports are allowed in my firewall Port: 443 and 4021 I've searched that allowing specific port for firewall using ...
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1answer
71 views

BTRFS filesystem configuration

I'm attempting to setup an Ubuntu server with the following disks: /dev/sda is a 2TB disk, which will host much of the OS. It is currently partitioned as follows: /dev/sda1: EFI Boot partition (488....
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2answers
31 views

Why ping statment doesn't work on this Linux Ubuntu VM? [closed]

I am not so into networking and I have the following doubt. They provide me a Linux Ubuntu 18.04.3 LTS VM on which I have to install some tools. The first thing that I tried was related to the ...
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1answer
31 views

Why do I have 502 error with my GitLab server on Ubuntu? [closed]

I installed GitLab using digital ocean tutorial I got 502 error I open 8081 port,and edit my gitlab.rb file properly unicorn[‘port’] = 8081 How to fix this? Why is Nginx showing Bad Gateway? My ...
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0answers
70 views

how to use old MySQL data directory for a new MySQL installation

I have my Mysql data in a EBS volume in aws, I need to point my Mysql to point to that directory instead of /var/lib/mysql. These steps i followed by this doesnot change the datadir sudo systemctl ...
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1answer
29 views

How to check the existing MySQL server if Strong Password Encryption is enabled?

Around half a year ago I have installed the latest MySQL 8 on Ubuntu 18.04. wget -c https://dev.mysql.com/get/${MYSQL_8_file} dpkg -i ${MYSQL_8_file} apt update apt install -y mysql-server I tried ...
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8 views

Ubuntu 18 Samba 4 File Explorer object missing in Group Policy Editor

As I intended to make a default application association per the instruction on https://support.google.com/chrome/a/answer/7009292?hl=en which is effectively the same documentation as in MSDN, I have ...
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1answer
460 views

Ubuntu not mounting connected hard drive but shows using fdisk

I have hdd connected to my single board computer running ubuntu bionic . Disk /dev/sda: 74.5 GiB, 80026361856 bytes, 156301488 sectors Units: sectors of 1 * 512 = 512 bytes Sector size (logical/...
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0answers
20 views

Unable to Route from VPN to Internet in Azure

Wireguard Server Ubuntu 18.04 Server (fully up to date as of 11/20/2019) WireGuard is installed and working (wg0/192.168.220.1/24) IP Forwarding is enabled on in the VM IP Address: 10.0.0.4 Azure ...
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2answers
259 views

VPN client doesn't have internet connection

I'm using Ubuntu 18.04 LTS on AWS and I'm trying to setup split tunneling using commercial VPN (PIA). I'm unable to use their .opvn configuration out of the box because when I do so my SSH connection ...
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0answers
19 views

Why does Kong use netcat?

There is a Kong gateway for a few microservices. When I see the htop on Kong server, there is a nc -wl -u kong-hf.mashape.com [port] which uses 100% CPU of one core all the time. And this slowly ...
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1answer
81 views

Get remote ip of the client connecting to OpenVpn server

I have setup a openvpn server, everything works fine. Now I am trying to log client-connect events. I am aware that there is client-connect directive in configuration file and each time a client ...