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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Freeradius Log file Information

I have installed freeradius in Ubuntu 10 LTS and i run freeradius in debugging mode as "freeradius -X" where i see the live debugging logs. Now i want to know where these logs (accept / reject) are ...
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1answer
2k views

Why isn't my server responding on port 443?

I have an EC2 server on AWS (Ubuntu 13.04). It's currently running a website on port 80 and I am trying to set up SSL. Right now it does not seem to be responding at all on port 443. telnet: Unable ...
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2answers
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df showing 28G of total space, du showing size of '/' as 400+ G

I constantly get the unable to write to * error, even though I cleaned up a bunch of space. df thinks my disk is 28G in size and 100% full after I deleted a lot of unused files: $ df -h Filesystem ...
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1answer
500 views

Linux - Only first virtual interface can ping external gateway

I created 3 virtual interfaces with different mac addresses all linked to the same physical interface. I see that they successfully arp for the gw and they can ping (the request is coming in the ...
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1answer
26 views

Adding multiple domain which have same DocumentRoot

I added multiple domain on server and when i created separate directory for every domain then all works good. the problem is that we have to pint all the domain to same code. when does i make all ...
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1answer
188 views

Remote storage on ubuntu server

I have an Ubuntu server having limited storage, 30GB. I need extra 100GB, how can I have a remote storage or remote drive which does not occupy local space? Cloud services like dropbox take local ...
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1answer
1k views

EC2 Password expire dont have previous password

Our server guys setup a password expire policy but never set a password for the default user now the password has expired but I am unable to change it as it asks for the current password which we dont ...
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1answer
2k views

Nginx + Nagios : 502 Bad gateway

I have a fully new install nagios, but I can't access to it. Here's my Nginx config: server{ listen 80; server_name [redacted]; # blahblah # Nagios Monitoring location /...
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2answers
5k views

adding ftp user on ubuntu

I followed this tut http://www.trainsignal.com/blog/how-to-set-up-safe-ftp-in-linux to setup an ftp server with user account sudo mkdir -p /home/ftp/ftpuser sudo useradd ftpuser -d /home/ftp/ftpuser -...
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1answer
2k views

Restrict traffic to local network and VPN using ufw or iptables

I want to restrict all traffic from my ubuntu-machine to come or go from the local network (eth0) or from or to my VPN (tun0). It should be possible to connect the router in the local network but not ...
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1answer
3k views

CentOS: SIOCGMIIREG on eth0

What does SIOCGMIIREG on eth0 failed error mean? This is causing our POS network down. ifconfig: eth0 Link encap:Ethernet HWaddr 00:215E:6A:FF:64 inet addr:10.100.202.254 Bcast:10.100.255.255 ...
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1answer
170 views

Ubuntu web server 11.10 ftp/server issue

I was wondering if I could get some help with FTP, atleast I'm pretty sure it has to do with FTP. Although it could have to do with something else, I'm not 100% sure.. Now, for fare warning, I'm no ...
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1answer
2k views

how to roll back a kernel ubuntu 16.04

I could not find this easily today so I am putting it here for other people, and myself in 6 months How do you roll back a kernel in ubuntu LTS 16.04, answered below
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2answers
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Every time I restart mysql, I see the following in the error logs immediately after the restart

2017-06-29T17:38:11.740837Z 0 [Note] Event Scheduler: Loaded 0 events 2017-06-29T17:38:11.741470Z 0 [Note] /usr/sbin/mysqld: ready for connections. Version: '5.7.18-0ubuntu0.16.04.1' socket: '/var/...
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2answers
657 views

Java process stay in running state and consume CPU

I have a jar running in background on a Ubuntu server. In a certain moment, the application start consumming too much CPU (400%) and 4 child process stay in R state: N.B: the problem is generating ...
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5answers
5k views

Postgresql - Error: Could not create log file /var/log/postgresql/…

Every time I try to start postgresql, I get this error: * Starting PostgreSQL 9.2 database server * Error: Could not create log file /var/log/postgresql/...
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2answers
40 views

One site non https

Hello I want to make sure that one file of my site is non https. I have this in my VirtualHost80 file Redirect permanent /README.php http://<ip>/README.php And I have this in my ...
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1answer
90 views

Why bandwidth between two nodes is slow?

I measure the bandwidth between my server, which is hosted in a data center, and different nodes, mostly as VPS, with iperf. I am finding out that the bandwidth between some VPS and my server is ...
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1answer
298 views

Connect to my server via SSH from external network

I have just installed ubuntu 16.04 LTS and I am planning to use it as my server. This server is mainly collecting the data so I have applied a static public IP address from my department. Currently ...
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1answer
563 views

webdav, cannot create file 0x80070780

I have a webdav running on amazon ec2 ubuntu. There, part of the configuration allows myuser access to a folder. Alias /webdav/myuser /var/www/webdav/myuser <Location /webdav/myuser> DAV On ...
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1answer
58 views

webdav, open just one particular (/webdav/public/) folder to the world

My webdav stuff is on /var/www/webdav/, there I have multiple access roles to enable access to users and groups. And I would like to open one particular folder to the world (/webdav/public/). How do I ...
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1answer
233 views

VSphere connect guest os to internet

Having a VSphere 6 host which is installed on machine in our private network. VSphere 6 host IP is 192.68.0.40. Our getaway router to Internet is on 192.168.0.1. I can connect to VSphere 6 host from ...
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1answer
55 views

Ubuntu 14, Postfix, Dovecat, Squirrle, Email messages not being sent to outside domains recipients

I have been suffering for so long from this.. All emails sent from the server are being delivered to local addresses.. but nothing to remote addresses!! All emails are being received by local ...
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2answers
416 views

How, with a mounted disk image, can I migrate a MySQL database to a new server?

One Ubuntu EC2 VPS is fried after an upgrade that went awry. I don't have the server live, but I have its disk mounted on another (Ubuntu EC2) VPS. How can I migrate the contents of a database on ...
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2answers
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Apache2 : Xampp is not running

I have apache2 and Xampp both installed in my server now my problem is When i stop apache2 from /etc/init.d/apache2 stop and tried restart xampp like /opt/lampp/lampp restart i am getting the ...
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2answers
329 views

ubuntu chown to var folder

help ! Accidentally changed permissions on all files in /var folder! gave sudo chown username:username -R /var now not able to login showing couldnt update .ICEauthority /var/lib/gdm/....
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2answers
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Ubuntu server keeps running out of memory

I have a VPS running Ubuntu 11.04 server, every week or so I have to reboot it as (I think) it's run out of memory. It has 256MB of RAM available and I've tried configuring Apache to run less RAM-...
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1answer
1k views

how to open tcp port in ubuntu

I have a ubuntu server How can i open a port ? I have flushed the iptables and off'ed ufw Provide me steps how to open a tcp port
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1answer
996 views

fclose() expects parameter 1 to be resource, boolean given

I have a ubuntu vps I am working on. And I am using the default /var/www/ domain, I am also hosting a SMF forum, None of the Packages are installing and such. I was just wondering what I should chown ...
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1answer
753 views

Postfix - Allow emails to virtual domains but block spam?

My Postfix is set up with virtual domains. This allows people to send an email to *@mydomain.com and it'll be forwarded to my gmail account. Basically the end goal is to simply allow people to email ...
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1answer
35 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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2answers
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How to upgrade mysql 5.5.46 to 5.5.50 in ubuntu?

I am using mysql-community server in my ubuntu server (mysql Ver 14.14 Distrib 5.5.46, for debian-linux-gnu (x86_64)). During our recent vulnerability scan we got so many suggestion to apply CVE-2016-...