Linux is the generic term for a UNIX-like open source operating system based on the Linux kernel.

learn more… | top users | synonyms (1)

1
vote
0answers
5 views

how to change display identifier of application while running in linux

I want to change display identifier of an application in linux. It is possible in this way: gedit --display :0 but how to change it at runtime?
0
votes
0answers
13 views

Usermod -aG vs gpasswd -a as a best practice

I am aware that usermod -g is not best practice from many posts like this however they normally explain the usermod should not be used as it changes the primary group of a user. These posts dont seem ...
0
votes
2answers
39 views

rsync : write failed - No space left on device (28)

I want to rsync a folder from one server to another. But rsync synchronization fails: $ rsync -zr --compress-level=9 --delete /var/www/mywebsite/current/web/js login@192.168.1.4:/srv/data2_http ...
0
votes
0answers
7 views

Zpanel Not Showing Anything in Admin Screen / Reinstall / Repair Required [on hold]

I was trying to update zpanel repository so ran few commands including zppy update zppy update zgodx and after that my zpanel admin area shows nothing , it's empty, no modules show, if i try to ...
0
votes
0answers
7 views

dnsmasq fails to start, citing capabilities error

I have a stock install of Ubuntu 14.04.2 on x86_64 running a 3.13 kernel. I've installed the stock dnsmasq package (2.68), but when I start it, I get this error: service dnsmasq start * Starting DNS ...
0
votes
0answers
5 views

pacemaker/corosync node doesnt work after system upgrade

Few days ago I did update(yum update) one of my cluster node. While yum performs cleaning operations after upgrade it tried to restart pacemaker. This operation hanged for quite some time until I ...
3
votes
0answers
25 views

Getting Error: “No space left on device” for a particular filename

I have a ext4 volume with lot of files inside a particular directory. Whenever I am trying to create a file inside it of a particular name, I am getting "No space left on device" error. $ touch ...
0
votes
0answers
22 views

WebServer Inaccessible

I have done an install of httpd and php on my new centos server. yum install httpd php -y I have done hundreds of webserver installs but for some strange reason I seem to be having troubles. When ...
0
votes
0answers
9 views

FTP with linux permissions not being set

I run a dedicated server with clients. I then accessed one client's account and created a folder. Let's call it TEST. I check permissions via the FTP client, and they check out to be ok (which is ...
-1
votes
1answer
14 views

How can I update nginx to lastest stable version?

I'm using a CentOS 6.6 Linux server and I have nginx 1.7.3 Installed on it . How Can I update Nginx to latest stable version (Nginx 1.8) ?
0
votes
0answers
20 views

Making the server communicate only with cloudflare IP`s

I bought a new Server at OVH, after we got kicked by our old data centre to our DDoS. I want to setup the firewall correctly, which only allows communication with cloudflare servers, but I am not sure ...
-1
votes
1answer
35 views

What are the best practices to mirror a web app? [on hold]

I'm using a dedicated server which virtualize Linux machines, the data-center is located in Europe. All the virtual machines are Linux servers, one is the Apache front-end while another is Mysql ...
-1
votes
0answers
31 views

Changing hostname reboot reverts back to original [migrated]

So, What I'm trying to do is simply change the hostname permanently. I can update the hostname but when a reboot is issued the original hostname is used! I'm aware there is a file hostname located ...
1
vote
0answers
24 views

How to script parted to resize partition on running root filesystem?

I have a VM template that I use for building other VMs using virt-clone / KVM. The VM template is 4GB to save space. The storage for VMs that I build from this are on iSCSI targets or LVM volumes ...
1
vote
1answer
115 views

ps is giving a segmentation fault

I'm getting a segmentation fault when I try to run a simple "ps aux" for a certain user. If I run as root or another user it runs well. So I think is something related with ulimits, but I think that ...
1
vote
0answers
20 views

Azure Linux VM name resolution

We have a single virtual network, with a single cloud server on Azure. This virtual network has multiple server nodes - including Windows machines, and some Linux machines. One of the Windows machines ...
0
votes
0answers
9 views

FFmpeg transcoding what is needed in cpu way? [duplicate]

What is the exactly most important hardware for running a live steam FFmpeg transcoding server? Numbers of cores? Highest GHz clock for the CPU ? L3 cache on the cpu? I'm looking for buying a new ...
1
vote
0answers
6 views

linux + send wall message only to the specific user [migrated]

As all know , we can send broadcast message to all users on Linux machine But how to send message only to the specific user? For example #who rodegc pts/1 2015-05-04 04:23 (10.4.72.1) ...
1
vote
0answers
12 views

Switching to HP microserver [duplicate]

I wonder if anybody have experience with migrating to the latest Gen8 HP microserver from existing architectures. http://www.storagereview.com/hp_proliant_microserver_gen8_review In my case the ...
-1
votes
2answers
20 views

How to set specify encryption hash when creating Linux user? [on hold]

I want to create a few Linux user on my computer to test JohnTheRipper against different kind of password (including length, charset and encryption hash method). How can I easily specify which hashing ...
-2
votes
0answers
22 views

What is the correct directory for application depoyment? [on hold]

I and another sysadmin are constantly at loggerheads about where to put applications that we've built internally. I say /var/lib/<application-name> and he says /home/<application-name>. ...
1
vote
1answer
25 views

Remove a drive from a 2-drive RAID 5 array using version 1.2 metadata?

My situation is nearly identical to "How to remove a drive from a non-standard 2-drive RAID 5 array?", except my 2 TB RAID5 is using mdadm super block version 1.2. According to the best answer, ...
0
votes
0answers
8 views

How to set up Kali in VirtualBox with dsl modem? [on hold]

Anyone can help me to get internet inside my Kali? On another VB host I have Windwos 8 and all works fine here is ipconfig: Connection-specific DNS Suffix . : Link-local IPv6 Address . . . . . : ...
1
vote
2answers
24 views

Xerox Phaser 3010 won't print anything

I've tried Fedora Core 18, 19, 20 and 21 (but I can't go back now, just had a chance while updating). Every time the system has no problem finding and identifying the printer. It doesn't have a PPD ...
0
votes
1answer
20 views

Having issues with inconsistent application of mod_rewrite rules

So I've been asked to clean up the URL's for the web app that we're currently running on apache (version 2.4.9 if so interested), but after messing around with mod re_write commands for a few hours, I ...
0
votes
0answers
33 views

Precision Time Protocol on AWS

We have a problem that requires a group of AWS linux servers to have the time exact by the millisecond between each other. (different nano seconds is ok, and we don't care if it is the real hour.) ...
0
votes
0answers
22 views

How to auto-start Degraded Software RAID1 under Debian 8.0.0 on boot?

If you remove a component HDD from an array, it drops into a "busy box" shell under "(initramfs)" saying something similar to "cannot mount root device" as the RAID1 array becomes "inactive". It is ...
1
vote
0answers
8 views

Linux kernel treating racoon's UDP socket as nonexistent

How can I figure out what's going on here? I've tried everything I know how to do short of adding printks or running a debugger on the kernel. I'm hoping somebody can spot something obvious that I've ...
-5
votes
0answers
19 views

HDD AND SSD FOR webserver [on hold]

I have a dedicated server with a ssd disk of 80gb and a HDD of 2tera. I want to install nginx + mysql + and all codes php in the ssd driver, and put all assets contents (more than 100GB) in the HDD. ...
0
votes
1answer
10 views

unable to setup point to point network between two openwrt boards

I am trying to setup point to point networks between two Avila boards (Processor : XScale-IXP42x Family) running Openwrt( KAMIKAZE 8.09.1) and Linux kernel 2.6.26.8. I am trying to setup two ...
-3
votes
1answer
21 views

Recovering data from a RAID built with fakeraid [on hold]

I have (had) a motherboard that supports (supported) fakeraid, which I used to build a RAID 1 with 2 WD Red 1TB. My motherboard died (as you would have guessed already) and now I have 2 options: Buy ...
1
vote
0answers
13 views

Many gettimeofday in Apache 2.4 + fcgid + centos 6.6 - Long Wait time for static files

When i perform a strace on apache process, i see many gettimeofday before & after GET request, even when Apache returns a static file like an image file. It results in a long downtime period ...
-1
votes
1answer
28 views

Which kinds of SSL certs there are?

When I visit eg. https://www.google.com, my web browser (IceWeasel) shows just a (grey) lock icon next to the URL. However, when I visit eg. https://www.cia.gov, a green lock and "Central Intelligence ...
0
votes
0answers
15 views

Filter Traffic Between Virtual Machines

I have a machine with Fedora 21 which acts as a host system for two virtual machines. The VMs are made up using QEMU/KVM/libvirt/virt-manager. One VM is running a webserver, the other VM acts as a ...
0
votes
0answers
22 views

Resetting root password on Slackware (software RAID)

I'm trying to reset password to root account on Slackware server (with Intel Atom on Intel motherboard and two HDDs). There is software RAID set up (devices mounted during boot: md0 - /, md1 - /usr, ...
-2
votes
0answers
11 views

Fail2ban, jail.conf not exist [migrated]

I installed Fail2ban to my debian, but I haven't jail.conf file in /etc/fail2ban/. I have only: action.d, filter.d Where can I find jail.conf?
0
votes
1answer
30 views

mounting NFS share fails with “Stale file handle” error [on hold]

How can I resolve this error and access the share? NFS server: 192.168.1.5 (ubuntu) NFS client: 192.168.1.6 (osmc) Contents of /etc/exports on ubuntu: /storage/share/media/Movies ...
0
votes
0answers
15 views

free smtp server on laptop, mail rely [on hold]

How to set up mail relying from laptop with GNU/Linux to outside world? I want to use different mail clients (mutt, thunderbird, mail command,…). Notebook is connected to different networks, so ...
7
votes
1answer
119 views

su: /bin/bash: Resource temporarily unavailable

Unable to switch user to postgres. Ulimit settings for postgres user is set with reasonable limits. We are not hitting max. No errors in /var/log/messages. Error: BETA -bash-4.2# sudo su - ...
3
votes
1answer
77 views

Why would a ssh connection fail to connect with whole proper setups?

Using Ubuntu Server 14.04 I got ssh server running on port 2222 (they asked it like that at building). I already got whole setups reviewed and nothing seems to be ok. This is what's set up: At ...
1
vote
1answer
35 views

iptables block net range

I'm trying to REJECT network via iptables(8) and for whatever reason it is not doing so: # cat /etc/redhat-release Red Hat Enterprise Linux Server release 6.6 (Santiago) # uname -a Linux X ...
1
vote
0answers
20 views

Permissions of newly created files on NAS mount

I've mounted a NAS partition as follows: server:/volume1/public /mnt/public nfs rw,suid,nodev,noexec,auto,user,async 0 0 All available files are both readable and writable ...
0
votes
1answer
25 views

Where can I learn about apache [on hold]

I use apache web server for web development in python. The biggest problem I face with apache is setting up the environment. I can't understand thing like what is difference between /etc/apache2 and ...
2
votes
0answers
37 views

Get statuses of network printers

we are tasked with finding exactly how many pages were printed by all IP printers on a fairly large network, and then doing a lot of things with that data. There are about 15 different printer ...
0
votes
1answer
47 views

Add cronjob with bash script - No crontab for root

I have a deployment script and in it I'm trying to add a cron job. This is the code I am using which I found on stackoverflow. I'm running debian 8. # ADD CRON crontab -l > mycron echo "10 * * * * ...
1
vote
1answer
21 views

iptables 'rewrite' requests on a certain port?

Alright, my situation is basically this... I have a box that's acting as a router, with 2 interfaces, eth0 and eth1. eth1 is my uplink, that is it is the interface through which the box is obtaining ...
2
votes
2answers
51 views

Exposing private network ip

I have the following setup: Box A eth0 - 192.168.1.101 eth1 - 10.10.2.1 Box B eth0 - 10.10.2.2 Box A has internet access through eth0. I want Box B to be visible on the 192.168.1.0/24 network, so ...
2
votes
1answer
42 views

99% disk IO spikes with Percona

So we have a server that has seemingly random spikes in disk I/O, going up to 99.x% at random times and for no obvious reason, staying high for ~1 hour, and then going back down. This hasn't been much ...
0
votes
1answer
41 views

Add a field to the Linux Login

Thanks all in advance. The question is simple. I want to ask the user the reason for login in Linux Production Servers. Login prompt will ask as common for user, password and the "Reason for Login" ...
1
vote
0answers
13 views

Redis Sentinel false failovers

I'm having problems with Redis. I have 3 servers. Each server have 10 Redises working on different port. Also, each server has one Sentinel instance. Also, there are 5 application servers. Each ...