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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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How is FC HBA card compatibility on Ubuntu?

I have a server running on Ubuntu 16.04, and need to connect this server to a SAN storage via FC. I wonder which kind of HBA FC card does Ubuntu support? For example, this card is suggested by a ...
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Can't get my couchdb instance to take new parameters into account

I am running Ubuntu Server 18.04 and CouchDB 2.3.1. I looked at this question and that one as well but to no avail. I have changed the bind adress in Fauxton from 0.0.0.0 to 127.0.0.1 thus losing ...
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6 views

Rebooting Ubuntu on a specific criteria in cron [duplicate]

I created a cron entry that will check if a wordpress database is up and will reboot itself if it is not. Note that it's a temporary solution to reboot the server and just wondering what is wrong with ...
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1answer
30 views

Shorewall - Allow Remote Client to Ping the Internet

My network address is 192.168.5.0. My host machine is 192.168.5.1 and my client machine is 192.168.5.2. Currently, my client is unable to use the internet browser and even ping the internet. The ...
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17 views

Apache2 Issue - 502 Bad Gateway

We currently have a Ubuntu 18.04 server running a full LAMP stack. On the server we currently host the below domain and subdomains (name changed) example.com store.example.com app.example.com ...
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1answer
29 views

letsencrypt failed authorization procedure

I'm receiving the following error when attempting to renew my ssl certificate Failed authorization procedure. karaokeottawa.com (http-01): urn:ietf:params:acme:error:unauthorized :: The client lacks ...
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0answers
7 views

Connecting Intel X722 SFP+ to Mellanox SX1012 QSFP via 4-split breakout cable using ubuntu

I have two servers running Ubuntu 18.04, each equipped with two SFP+ interfaces, each showing up in lshw like the following. *-network:1 description: Ethernet interface product: ...
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6 views

Ubuntu 16.04 + Postfix + Dovecot => Send ok, but not Receiving

I'm using Ubuntu 16.04, and installed iredadmin. Postfix + Dovecot are running, but I cant receive e-mails, just send. /var/log/mail.log (LOGS) Mar 19 13:08:51 construlista postfix/smtpd[17128]: &...
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0answers
10 views

Ubuntu server /31 subnet configuration

What is a proper way to configure a /31 subnet on Ubuntu server's eth0 interface? Is normal configuration with 255.255.255.254 subnet mask and broadcast being set to something random a production ...
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1answer
27 views

How to set up AWS connection

For the first time, I have applied for an Amazon Web Service, choosing the Lightsail package specifically. After installing several modules through Putty, uploading the files through FileZilla, and ...
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1answer
58 views

Helm under MicroK8S giving: “Error: could not find a ready tiller pod”

On a fresh install of [Ubuntu 18.04.2 Server X64] Im installing MicroK8S and Helm with the commands: sudo snap install microk8s --classic microk8s.kubectl version alias kubectl=...
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12 views

Setup Laravel as API location block on Nginx gives a 404

I'm trying to setup a website with React as my front-end and Laravel as my back-end. My server is an AWS instance setup with using Nginx on Ubuntu. Currently I have Laravel in /var/www/laravel and ...
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0answers
26 views

Track down where disk space has gone in a reasonable amount of time

I'm impatient. I wanted to find a fancy way to say I'm impatient, but that's about it, really. What are the fastest commands that replicate something like using sudo du -hsPx -t 100M on increasingly ...
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1answer
23 views

VMWare device mapper size smaller than parition size

I am trying to understand what is going on with my VMWare instance. I have had 50GB partition that I extended to 150GB and resized the partition. However, the partition still shows that it only has ...
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0answers
13 views

Gamil does not receive mail from the server [on hold]

Install Postfix on my server You have set all settings But the problem is that the server sends mail to all servers except Gmail Have any of you experienced this problem before? How can I solve it?
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0answers
10 views

How do I configure one machine to act like a “proxy” , modify a packet in transit and loop the response back to the requestor machine?

Trying to learn some basic networking concepts here and figure this should be simple to do but unfortunately cannot figure it out I'd like to do the following: Machine 1 should know to send all http/...
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2answers
16 views

Error when adding supervisord to run via systemd

I am trying to run supervisor from systemd and I am following this tutorial here. Upon creating this file /etc/systemd/system/supervisord.service with the following contents: [Unit] Description=...
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41 views

IPv6 is resolved from G suite relay address cause “Invalid credentials” when sending via postfix test

I came across a wired issue it is obviously Gmail relay service resolved as IPv4/v6 randomly, which causes the authentication not passed. I used DigitalOcean Ubuntu 18.10 + Postfix + G Suite account +...
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1answer
25 views

MYSQL error: SSL_CTX_set_default_verify_paths failed

I'm currently trying to get SSL set up on my mysql 5.7.25 server. I used the following command to get the process started: sudo mysql_ssl_rsa_setup --uid=mysql And I get the following output when I ...
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0answers
14 views

Crashing network on kiosk after clonezilla disk clone

I have a kiosk touch panel with all-in-one HP (EliteDesk) PC. We have 6 panels. For easy deploy, we choosed cloning/restoring disk via Clonezilla. So I made a whole disk image to flashdisk (savedisk ...
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35 views

Forwarding port eth <-> tun0 works for one NIC, bot not other

In my VPN, client with address 10.8.0.2 exposes ports 80 and 5000. I need to forward these ports on server to the client so i can access "forwarded" ports from outside of the VPN network. I have two ...
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21 views

Why is ubuntu 18.04 LTS bundlet with solr 3.6? [closed]

During installing an solr running on Ubuntu 18.04 LTS I was thinking about to chose the solr-jetty distribution package. While looking, which solr version is provided with solr-jetty I found out, ...
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71 views

Apache allow HTTPS with Virtual Hosts

I am setting up an UBUNTU 18.04 environment with Apache, MySQL, PHPMyAdmin etc. I need to allow HTTPS connection for URL rewrites, currently HTTPS crash when I enter a 'pretty' URL HTTPS: If I ...
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0answers
30 views

Bonding balance-xor (mode 2) using only one network interface

I am using Ubuntu 16.04.6 LTS and bonded 2 network interfaces with the following config: auto eno0 iface eno0 inet manual bond-master bond0 auto eno1 iface eno1 inet manual bond-...
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2answers
40 views

Permission denied, please try again ( Ubuntu )

Actually I already have tried everything as dicussed in SSH Permission denied (publickey) and Unable to ssh to GCE: “Permission denied (publickey), But none resolved the issue. I am able to ssh into ...
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0answers
30 views

Ubuntu Certbot SSL not working 18.04

I am trying to integrate SSL with my Laravel site http://enablerochester.com. I tried following the tutorial for setting up certbot on Ubuntu 18.04 here: https://www.digitalocean.com/community/...
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0answers
10 views

Rename network interface based on MAC without matching bridge

In Ubuntu 18.04, I have an ethernet adapter that I rename to primary-eth, in a bridge called primary-bridge. I renamed my network adapter with a file at /etc/udev/rules.d/70-persistent-net.rules ...
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0answers
28 views

Ping not working in network namespace

If I do: sudo ip link add l4 type veth sudo ip addr add "7.7.7.7/24" dev l4 ping 7.7.7.7 PING 7.7.7.7 (7.7.7.7) 56(84) bytes of data. 64 bytes from 7.7.7.7: icmp_seq=1 ttl=64 time=0.023 ms 64 bytes ...
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2answers
39 views

All the IPs of my server redirects to my site

I have a server with a main IP (the default one of the server) and two additional IPs. The problem is that all the IP of my server redirects to my site. I want only the main IP to redirect to my ...
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1answer
26 views

HTTP request to unavailable resource gives different error message

I have Ubuntu 18.04 client and I try to curl to the HOST that is not present on the network like: curl 192.168.11.1 --connect-timeout 10 curl 192.168.11.1 --connect-timeout 35 Why does it sometimes ...
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21 views

BIND9 SERVFAIL using dig on UBUNTU server 18

I am setting up a nextcloud+onlyoffice server on ubuntu server 18 and a LAN DNS for my office to go with it. I'm not a real IT guy but I follow tutorials and read forums. Also, being in China I don't ...
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36 views

Using root User

I installed WordPress with LEMP on Ubuntu 18.04. I'm using root account. So using root user can create security issues for LEMP? Should I restore my instance and install again with different user?
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1answer
38 views

Can not run Brotli on my Nginx server

I installed Brotli on Ubuntu 18.04 with Nginx. Here is the procedure I followed : $ sudo apt-add-repository ppa:hda-me/nginx-stable $ sudo apt update $ sudo apt install brotli nginx nginx-module-...
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0answers
33 views

Changing User - Ubuntu 18.04 LTS

I installed mariadb, nginx, php7.2-fpm, ufw, fail2ban, zip and unzip as a root in the past. My site is WordPress. Now I have added an user with root privilages into my server. I won't use root user ...
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0answers
26 views

KVM + netplan: disable DHCP default gateways on multi-NIC guest (cloud-init/netplan)

I'd want to setup a very "simple" configuration in a guest Ubuntu Server 18.04 LTS under KVM: a lan NIC interface, handled by DHCP, able to receive some static routing rules from DHCP and some local ...
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1answer
11 views

How to Remote Connection to mongodb server

I added bindIpAll: true and I have a db with user and pass, when I run this Command from Ubuntu Terminal, everything is ok and I can Connect to db, But When I run That from my Laptop I Get This Error: ...
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How to diagnose: Ubuntu 16.04 error 403 forbidden in response to GET from updates.drupal.org

None of the 3 Drupal websites on this server are able to show available updates. Error message is: GuzzleHttp\Exception\ClientException: Client error: GET http://updates.drupal.org/release-...
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0answers
24 views

On Ubuntu, process disappears with no OOM kill record in syslog

I have a Java server process that keeps disappearing on me. I suspected an out-of-memory kill, because it is a small server (only 1GB RAM), but there is nothing in /var/log/syslog about any OOM ...
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1answer
56 views

How to install Brotli on nginx and Ubuntu 18.04?

I installed Brotli on Ubuntu 18.04 with Nginx. Here is the procedure I followed : $ sudo apt-add-repository ppa:hda-me/nginx-stable $ sudo apt update $ sudo apt install brotli nginx nginx-module-...
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3answers
157 views

cannot log in to the server after changing SSH port [closed]

I am using putty to connect to my Ubuntu 16.04 VPS. I decided to change the default SSH port from 22 to 443. I did this changing the line Port 22 in /etc/ssh/sshd_config to Port 443 Now when I ...
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0answers
36 views

Segmentation fault detected in apache error log

I have this problem on my Ubuntu Server: Problem Some time my sites are not reachable from the browser and I can see a "Time Out Error", however the server replies to PING requests. I checked the ...
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2answers
106 views

Troubleshooting Compute Engine OpenVPN internet access on Google Cloud Platform

I have Ubuntu 18.04 running on a Compute Engine on the Google Cloud Platform. I setup a VPN on 1194/UDP using Nyr's awesome script (I also tried on 443/TCP). The VPN connects however I am unable to ...
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1answer
34 views

E-Mail spam from localhost without having an open relay

I use ubuntu with postfix/dovecot for e-mail purpose. Now I have the problem that mails are being sent by unauthorized user, despite the fact that I don't have an open relay. My mail.log contains ...
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1answer
46 views

NGINX FastCGI Cache on NGINX > Apache > PHP-FPM

I had failed attempts earlier at getting Nginx Fast-CGI caching to work in Nginx > Apache > PHP-FPM config so I started fresh on a new server but am still having issues. The server has a clean ...
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0answers
25 views

Unable to unlock disk after Ubuntu upgrade [closed]

I'm currently facing the issue of being unable to unlock my M2 NVMe Ubuntu system disk after upgrading to Ubuntu 18. Hard facts: Switched from a sandisk SATA SSD to Samsung M2 NVMe using DD. Disk ...
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0answers
38 views

AH02027: Failed to release SSL session cache lock

I got an error in /var/log/apache2/error.log. I use Magento 2. [Fri Mar 08 06:03:05.767587 2019] [ssl:warn] [pid 4144:tid 140469346477824] (22)Invalid argument: AH02026: Failed to acquire SSL ...
2
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1answer
33 views

Understanding network configuration for Vapor+nginx

I have my Vapor App MyApp running on localhost:8080 on my Ubuntu server and installed nginx to connect to it via <server-ip>:80. It works, but I don't understand the following part of it: To ...
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0answers
15 views

Add route rule for specific destination

I have a VM, say A, that is set as the default gateway of another VM, say B. In other words, the default gateway of B is A. On VM A I have this virtual interface, on which VM B is connected. The ...
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0answers
12 views

SSH connection timeout after changing SSH port and enabling ufw on tun0

I am trying to connect SSH via VPN, and with ufw enabled. I changed the SSH port from 22 to 53535 I changed the value in /etc/ssh/sshd_config, restarted the sshd, and connect with: ssh root@192.168....
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1answer
18 views

Error when trying to enable ufw logs on Ubuntu

I am trying to enable logs for ufw. When I do sudo ufw status I get Status: active To Action From -- ------ ---- 53535 ...