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

learn more… | top users | synonyms (1)

0
votes
0answers
7 views

Can't boot after intrerrupting do-release-upgrade (Mount failed for selinuxfs on /sys/fs/selinux)

From a ssh session I ran: sudo apt-get install update-manager-core sudo do-release-upgrade I went to read something else and when I returned to my ssh session, it wasn't responsive. I'm presuming ...
0
votes
1answer
22 views

Ldap+kerberos authentication through AD

Is it possible to configure ldap+kerberos authentication on a linux machine without joining it to windows domain? I have to create a pool of VMs using RHEVM with a pretty short lifetime and I do not ...
-1
votes
0answers
8 views

Installed New Relic however it is not finding individual directory applications

I have a dedicated server running apache with php, we have 4 applications, one per directory, i installed new relic and it is reporting for 1 app through the APM however i dont understand why it is ...
0
votes
0answers
10 views

PageSpeed Unicode characters file name

PageSpeed unable to interpret Unicode characters on file names. My problem is that some of the image files names have Unicode characters and Nginx is able to access them. This link is accessible ...
-1
votes
0answers
26 views

Want to filter a single packet out of a TCP stream

I run a gameserver and I have a problem setting up a firewall rule to block an injected packet. First , this is the target data from worldserver without any injection in the exe that connects to the ...
0
votes
1answer
28 views

How to increase inodes limit in ReiserFS filesystem?

Is it possible to increase inode limit in ReiserFS without formatting the partition? Currently, the filesystem on my VPS allows me to create 489K inodes, which is not enough. The machine works as ...
0
votes
0answers
16 views

Mount the other half of instance store volume

I have a running c3.xlarge EC2 instance on AWS. As listed in http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/InstanceStorage.html#StorageOnInstanceTypes , it should provide 2 x 40GB SSD instance ...
-1
votes
1answer
29 views

How to maximize AWS Default Partition Size?

Hello Ladies and Gents, I apologize if the question isn't phrased as well as it should be; it's getting late and I've been staring at this screen for way too many hours after work. My core ...
0
votes
1answer
15 views

How do I open specific ports on Linux (an AWS instance of RHEL v. 7)?

I'm using RedHat version 7. My AWS instances are in a security group with ample permissions for inbound connectivity. I can do Yum updates. The servers can ping each other. I can transfer files ...
-2
votes
0answers
8 views

Can't get xfilesharing with Nginx to work

Its been a week , i'm trying to get Xfilesharing script upload progress bar to works but i didn't succeed can you explain to me how to make it works with nginx upload progress model or can you tell me ...
-3
votes
1answer
30 views

iptables rules for blocking specific packets

Im using the following iptables rule: iptables -A INPUT -p tcp -m tcp --tcp-flags PSH,ACK PSH,ACK -m length --length 52 -m state --state ESTABLISHED -j DROP It does it's job for blocking the ...
1
vote
1answer
36 views

How to make a simple script that increases a number character by 1

I have to add a single command for MANY vlans, and wondering if I can generate a simple text file somehow? Then I can simply paste the text file into the network switch and it will add the needed ...
0
votes
1answer
20 views

find and replace text from urls in csv data feed [on hold]

I want to add affiliate id say 'xyz' to the below urls Type 1: example.com/abc.html?id=White example.com/abc.html?id=Black Then urls should look like ...
0
votes
1answer
44 views

Route between local machine and a VM running on remote server

I'm trying to establish a route between my local machine (LM) and a VirtualBox VM (VM, create with Vagrant and configured with Host-only Networking) running on a remote server (RS). The setup is as ...
1
vote
0answers
25 views

Growing memory use

Let me start with picture: This is memory usage of our backup Tomcat server. It is just hanging there, processing simple healt check request every couple fo seonds and waiting for main server's ...
0
votes
2answers
37 views

KVM virt-clone while the VM is running

Is it possible to clone a running kvm machine without tools like virt-clone? They already have the original vm in production, I cannot shut it down. If I don't care about temporary data corruption ...
0
votes
1answer
25 views

How can I know the absolute path of a running process? on solaris

this is the command to view the process path on Linux ps -auxwe | grep 24466 ( 24466 is only example ) but please advice is it possible to view the path of running process on Solaris if yes ...
0
votes
1answer
15 views

Can't add Nodes to Percona XtraDB cluster

In my case, I have two nodes in cluster, but when I use $service mysql bootstrap-pxc to start XtraDB cluster, I found nodes were not added to cluster. I also check /var/log/mysql/error.log, but no ...
0
votes
1answer
23 views

Hetzner script, configuring SSD + RAID1 image installation

I am trying to figure out how to set this configuration on my Hetzner server. The hetzner installimage script provides a default configuration (with comments: http://pastebin.com/tBqezpFn): # ...
0
votes
1answer
17 views

Setup fail2ban with apf

Along with BFD we have recently installed fail2ban on our server, it is CentOS and it uses APF to block IPs. I have hunted online on how to get the two to work however when an IP is blocked by ...
0
votes
0answers
16 views

AWS Linux RHEL instance unable to format and load new storage partition

I have an AWS RHEL instance. Following are the storage devices on it: $lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT xvda 202:0 0 20G 0 disk xvda1 202:1 0 6G 0 part / I ...
1
vote
0answers
20 views

End of script output before headers: php5

I've inherited the sysadmin role on a server that's running a wordpress website on top of Apache 2.4/Debian. It almost works, but it is issuing "500 internal server error" from time to time. In my ...
-2
votes
0answers
10 views

Mac OS X Ad-hoc Network Certificate [on hold]

I was wondering if on a Mac with the built in "Create Network" feature, to make the client (which will always be an iOS device) accept a .cer file before joining the network. I know some professional ...
0
votes
0answers
10 views

cloud-init not executing on rackspace cloud

I was trying to pass a bash script to cloud-init on rackspace-cloud with 'nova boot' via --user-data. I used the following command: nova boot --key-name mykey1 --image "Ubuntu 14.04 LTS (Trusty Tahr) ...
-2
votes
0answers
24 views

Slow 10Gb Networking 300MB's RAM disk Transfer Speeds [on hold]

I have a dell poweredge 2950 that has 2 Mellanox Connect X-2 10Gb NICS installed in it. They are both in 8x slots. The server has 2 raid0's using SSD's but for testing I'm using an 10gig ram disk. The ...
0
votes
0answers
10 views

Network Interfaces Cards and rx_short_length_errors and Linux Kernel

My machine (Linux OS) is counting packets with wrong length, it is a huge environment (GW's, Routers, Switches...) , so I would like to understand how NIC's behaving with these packets. -Does NIC's ...
1
vote
1answer
34 views

How should I manage a long running server process on Ubuntu?

I have an app (in the form of a single binary) that I need to run on one of my servers, and I'd like to be able to control its lifecycle properly. What I'd like is the following: simple one command ...
0
votes
0answers
18 views

Permissions of files and subfolders in /var/www/html (Ubuntu 14.10 + Apache2) [duplicate]

I have some questions about permissions and ownerships of folders and files in Ubuntu Server 14.10 + Apache2. Is it correct that /var/www/html is owned by root:root by default? As far as I read, it ...
0
votes
1answer
33 views

Supermicro super server RAID warning

Hey guys sorry in advance for the noobish question. Our company just received a brand new 6017R-WRF Supermicro superserver. I have been tasked with getting this bad boy setup. I am a software dev ...
2
votes
2answers
36 views

Is an ECC ram enabled GPU necessary for a server, or will a normal gpu work fine in a server?

Is it a requirement for a server to use ECC ram on a GPU while the normal CPU ram is ECC? Im thinking that instead of using a Quadro k6000 or AMD Firepro, we could use a GTX 980 or AMD r9 290...if ...
0
votes
0answers
11 views

Mapping right CTRL key to ENTER function

I am using Putty to connect to a Linux server. I am a mainframe person so I really want to map my right CTRL key to ENTER and then map the ENTER key to the NEWLINE function to mirror how the keys ...
-2
votes
0answers
17 views

server performance affected due to node and npm [on hold]

I have a server that is very slow compared to the memory it has. https://gist.github.com/shantanuo/ac80790c67cc1cca76e9 I can see several node and npm processes. Are they affecting the performance?
0
votes
0answers
18 views

Run server on home PC [on hold]

I am newbie. I have static IP address. Is it possible to serve my web site on my local PC.While registering domain I have to specify NS server. I don't clearly understand what is the purpose of this. ...
-1
votes
1answer
11 views

Can we run thin client to connect to Linux (Suse or Ubuntu) [on hold]

Not sure where to ask such questions, so guide me on that! I am looking to have several thin clients to use same server (system), the work involved is mostly office and browsing related works - that ...
0
votes
1answer
30 views

Linux centric backup solution for NTFS target

I've got to backup data (around 100GB) on a linux system on a daily basis. I need daily incremental and regular full backups on an 2TB USB drive that is NTFS formatted (no way to change that). If I ...
-3
votes
0answers
19 views

remove lines from a file based on whether corrersponde to a list of names [on hold]

could help to create a perl script to delete a line file based on a specific name , eg if I want to delete me from node 1 and node 4 and its contents until you find another based on one ready names eg ...
1
vote
1answer
28 views

Unable to boot into software RAID1 after disk failure

Today after restarting my data server I was unable to boot because one of the drives wasn't being recognized any more, it is still spinning when I connect it and not making many weird noises except ...
1
vote
1answer
62 views

firewalld vs iptables - when to use which [on hold]

TL;DR On new CentOS server installs should I be using firewalld or just disable that and go back to using /etc/sysconfig/iptables ? firewalld and iptables serve similar purposes. Both do packet ...
0
votes
1answer
37 views

Why is linux not listing the IP I want?

I have a linux based cluster (using openMosix). The machine intended to be used as a server has 2 network cards. Cluster is working, and all machines ping to each other inside the cluster (internal ...
0
votes
0answers
33 views

Kerberos, Active Directory, and Linux/Unix Servers

I have done some research on the topic, but I can't quite find a straight answer to my question. Please tell me if my understanding is correct. Kerberos can be used as the bridge between a ...
0
votes
2answers
53 views

Can a Linux Kernel be shared between two operating systems?

Quite simple question. I am working on a project to have multiple operating systems (all linux) on the same machine using btrfs subvolumes so that the user can boot to the environment they are ...
1
vote
1answer
29 views

Need advices on iptables

Helly guys ! :-) . I need a (several?) advice(s) from you about my iptables setup. I'm pretty new to iptables, and this is the first time I configure a server with iptables ONLY as a firewall (we ...
2
votes
2answers
18 views

How do I request a certificate from CEP / CES on a Microsoft CA on OSX or Linux?

This article describes how to request a certificate from AD CS (Active Directory Certificate Services) from a non-domain joined windows computer. I would think the same principals apply to non ...
1
vote
1answer
34 views

Suddenly error='Cannot allocate memory' (errno=12) [on hold]

So this morning I noticed my website is down, went on my server and saw that the webserver has been stopped. When I try to start it again I get this error start -Dhttp.port=80 ...
0
votes
0answers
18 views

Plain (remote) Linux desktop on my VNC Viewer? [migrated]

So for some reason my VNC Viewer is not showing any desktop icons on the remote Linux. I remember it first happened after I clicked on the button "Quit this session". I am using putty as a terminal ...
-1
votes
1answer
26 views

How to change volume mount

I have two volumes in my EC2 ubuntu instance: NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT xvdb 202:16 0 40G 0 disk /mnt xvda1 202:1 0 400G 0 disk / I want the 400GB one to be the main ...
0
votes
0answers
22 views

Server making outbound dns requests [duplicate]

I have a cloud server with Rackspace and they have blocked DNS because of "excessive queries". I can find the info below when running ps, but I can not seem to locate where the file is that is making ...
-1
votes
1answer
19 views

SELINUX blocking php-fpm and nginx working together?

I'm having some issues with SELINUX. When trying to visit my website I get 403 forbidden from nginx and the server pops up with an error and says to use grep NGINX /var/log/audit/audit.log | ...
-3
votes
1answer
37 views

Does swap on 32-bit OS with 4 GB make sense? [on hold]

Does having swap space makes sense if I have a 32 bit OS (Linux) and 4 GB RAM already? As it would have to be addressable with a 32 bit address, which are already all "used up" by the RAM, would ...
0
votes
1answer
23 views

How to automate input for a repetitive script! Expect in Bash?

I am a junior sys admin. Reason I'm asking this question is because we don't have a senior sys-admin here who is proficient with scripting. Senior guys are at the head office and too busy for ...