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

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Webserver pages won't load until second connection attempt

I have an Apache2 driven Wordpress site running on an Ubuntu server VM, it's worked well for years. I also have another Ubuntu server VM running an instance of NGINX, acting only as a reverse proxy ...
2
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1answer
21 views

Reuse remote ssh connections and reduce command/session logging verbosity?

I have a number of systems that rely on application-level mirroring to a secondary server. The secondary server pulls data by means of a series of remote SSH commands executed on the primary. The ...
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16 views

Tools for heterogeneous systems and way to start MySQL cluster automatically

I'm trying to auto start of MySQL Cluster. There are several nodes and several distinct processes, and I must start them in the proper order. Firstly, I must start ndb_mgmd on management nodes, ...
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0answers
8 views

How to host content / web session to one locally connected display? [duplicate]

I am trying display html content on a display attached to a micro-pc. I want to be able to use the display like digital-signage and disable everything but viewing. I can run linux with a LAMP stack ...
1
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1answer
34 views

How to recover deleted root of linux system?

The story: I am using Ubuntu for my website. For a backup plan, I wrote a script. I wanted to mount an external drive, (run through crontab), backup the server, and then umount it, every night. I ...
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1answer
32 views

Hyper-v Virtual Network Switch Configuration

I have Hyper-v Running. What I am trying to do is setup a CentOS firewall box which will forward all traffic to the 2nd VM CentOS box which has an internal adapter and only seen by the 1st VM ...
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0answers
24 views

bash script loses readonly value after first time thru loop [migrated]

I have a bash script which seems to lose the value of the readonly constant after the first time thru the for-in loop. For example: #!/bin/bash readonly DIR="./groups/" for output in "${array[@]}" do ...
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0answers
8 views

Exception value: dns-name duplicated

I'm using an old version of cobbler that is bundled with Red Hat Satellite. When I attempt to modify a system, setting hostname and IP I get this error: Thu Jul 24 14:09:52 2014 - INFO | find_items; ...
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1answer
22 views

Historical CPU Utilization by Service Name In RHEL 6.2

I need to implement historical CPU Utilization by service name in Linux Red Hat 6.2. Is there any software or command which can provide such details ?
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1answer
35 views

Is it possible to create loop device in openvz? [on hold]

I have openvz vps and as I can see there's no disk device. But I really need to have a disk device there to check one thing. The question is, can I create fake disk device that would be able to work ...
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0answers
15 views

CoovaChilli error: Failed to create redir listen

I installed Coovachilli version1.30 on Centos 6.4 compiled from source. Followed all the documentation from all sources I layed my hands on like this tutorial But my Coovachilli won't start. I ...
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2answers
38 views

Can a NetApp disk array be used as a JBOD?

I have a bunch of (old) NetApp DS14MK2 disks arrays with Fibre Channel connections. I wouldn't use them to anything critical, but instead of throwing them out, could I use each of them as a separate ...
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0answers
3 views

Disabling ssid broadcast programatically/CLI and keeping exsisting devices connected DD-wrt access point

I'm trying to disable/hide my SSID broadcast programatically in order to stop devices connecting to my access point (not for security reasons). I have tried renaming the SSID and setting it to nothing ...
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1answer
20 views

EC2 instance initializing with only 1/2 check thus not able to login into my Linux server

Hello friends, Our EC2 instance is initializing with only " 1/2 checks passed " after I detached and reattached my volumes (I did it for some specific debugging purpose). Thus i am not able to login ...
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0answers
11 views

Printing duplex from linux to Windows Server printer

Printers are shared through the windows print server but people also print from linux command line (and have separate accounts for that server not linked to AD). All the print requests go through the ...
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3answers
39 views

ssh-keygen create ssh key for linux user

Being a Sudo user, is it possible to create a SSH key for an user in the same Linux server? This Sudo user doesn't have a Switch user privilege. I have a server where I Login as sudo user say ...
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2answers
29 views

Possible to put larger disks in LSI arrays?

I have a couple of these LSI arrays LSI Model: 0834 LSI Class: 3600 LSI Name: LSI Engenio LSI product name: 1932 LSI Product codename: Mary Jane Enclosure name: Shea (DM1300) End of Life: 31-Dec-2010 ...
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2answers
31 views

Recovery from bad CD with linux

I have a CD which isn't properly finished. I have to recover the data from it. Machines react kind of differently for it but none of them can access it. I can't even DD the data off... dd if=/dev/sr0 ...
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0answers
41 views

Copy over existing files without confirmation? [migrated]

I need to copy and over-write a large amount of files, I've used the following command: # cp -Rf * ../ But then whenever a file with the same name exists on the destination folder I get this ...
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0answers
31 views

Is linux mail command a MUA (Mail User Agent)? [on hold]

Is linux mail (or mailx) command a default MUA (Mail User Agent) ? Is it a light-weight MUA, without advanced functionalities that general MUAs usually provide, like search?
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1answer
21 views

Apache Tomcat standalone or with nginx or apache?

I will be rolling out a fairly big project that will be running on Tomcat. I will have a linux VPS for it (Debian). i wanted to know if it is recommended to run it by itself or behind a httpserver ...
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0answers
23 views

Systemd exits from bash scripts that execute commands that result in failure, instead of continuing

I'm trying to get a script that pushes up my system log on CoreOS to logentries. To compensate for the fact that instances don't have internet connectivity right away when being spun up on AWS I've ...
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0answers
3 views

process group A default route tun0, B default route tun1, etc

I have a Linux box with N tunnel interfaces, tun0, tun1, and so on. I want to set things up so that a particular group of processes, A, has its default (and only) route pointed at tun0. Meanwhile, a ...
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0answers
16 views

CSF game servers (team fortress 2) only 20 connections allowed [on hold]

I've question about CSF firewall. I've been running from my high-end dedicated server many websites and csf have been answer to my prayers. But when I try to run team fortress 2 servers only 20 ...
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0answers
4 views

Installing a self-signed cert in an EC2 instance

I have a dedicated EC2 instance running Fedora. The code I have in the EC2 server can be accessed by pointing the browser to: http://ec2-xx-xx-xx-xxx.compute-1.amazonaws.com, I want to be able to ...
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0answers
14 views

send udp packets to a destination via forwarding

i have linux machine A ( 128.247.19.194, netmask 255.255.254.0) linux machine B ( 128.247.19.165 netmask 255.255.254.0) And another linux machine (128.247.19.3 netmask 255.255.254.0) There is a ...
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1answer
13 views

Install Apache Derby on CentOS 6.4

I'm not a Java developer, my knowledge is very limited to this topic. I want to deploy a .war webservice on my Tomcat server, which fails most likely because of its Derby dependency (just a guess from ...
3
votes
2answers
46 views

BackupPC Taking over 72 hours to backup 250GB's

I am using BackupPC to backup some workstations at the office. One workstations in particular has a sizable amount of data when compared to the rest, however, it's not that large in general (talking ...
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0answers
35 views

Multipe vnc sessions on Linux [on hold]

To start a vncsession on a specific port in Linux, we use the following command vncserver :6 vncserver :7 vncserver :8 Wanted to check if it was possible to start vnc on all the 3 ports 6-8 in a ...
3
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2answers
34 views

On a freshly-rebooted server why would the CPU running time of processes be huge?

I rebooted our server this morning, yet there are umpteen processes that appear to have been running for 600+ days? Could someone please shed some light? The datetime of the machine is correct: ...
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0answers
15 views

OpenVZ - updating kernel and all containers

Last night I upgraded to the latest kernel of openvz. I rebooted the host node. It came up with the latest kernel. However, the containers are still running the old kernel. What I did on the host ...
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1answer
48 views

How to run a script within an Amazon EC2 when the instance starts for the first time?

I have made my own AMI's for internal purpose. How do I run a script when the instance is launched using this AMI? How can I do this? My current approach is by adding the script, say myscript.sh, to ...
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1answer
31 views

How to set up the routing mail server with public static IP interface and private IP interface

I a building an email server that will use Postfix for SMTP, and Dovecot for IMAP. This server will have two interfaces: wwan0 - this interface has a static public IP address, and will be used by ...
2
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2answers
71 views

Allowing nagios plugin check_dhcp to work without setuid root

Nagios has a plugin, check_dhcp, that does exactly what you'd think. It's widely suggested to install it setuid root, because it uses SO_BINDTODEVICE, which usually only root can do. Of course a ...
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2answers
55 views

PHP eats up all the memory

Since this morning one of our webserver's memory getting filled up by php which eventually going to cause the server to start swapping, slow down and become unavailable (an ssh login takes like 5 ...
2
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1answer
20 views

How to make Monit “check process” conditional?

I have a monit script that does something like this: check process sidekiq_1 with pidfile /tmp/pids/sidekiq_1.pid start program = "/bin/bash -l -c 'bundle exec sidekiq start" as uid jim and gid jim ...
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0answers
30 views

Connect two servers with RJ-45 cable and iptables (without switch!)

I have two servers and server_1 is connected to INTERNET port (of server farm) at eth0. No switch. They connected with cable from (server_1)eth1 -> (server_2)eth0 : ifconfig of (server_1): eth0 ...
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3answers
29 views

How to install interdependent repository? [on hold]

I am installing libjpeg-turbo. To install this library I need to install libjpeg-turbo-devel and vice versa. How to solve interdependency issue? Command: yum install ...
1
vote
1answer
27 views

Apache high CPU usage but medium overall CPU usage

I am running a website on an Apache server. The server itself is an 8 core server with 35G RAM. I am monitoring the statistics of the apache resource usage and the overall server resource usage. I ...
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0answers
20 views

Setting up ProxyPass on Apache

I have an OpenSUSE13.1 system that is as follows: Apache Proxy Server, DocumentRoot = /srv/www/v00, Port = 80 Apache Child Server, DocumentRoot = /srv/www/v01, Port = 81 Apache Child Server, ...
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0answers
5 views

DJBDNS svstat /service/tinydns not starting in centos 6.5

I'm using djbdns for the past 6 years...Right now facing some issue while configuring our new server.Centos 6.5 Now I have a new server from digital ocean (Droplet) Installation of deamons , ...
2
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0answers
25 views

Are DNS server responses categorized as “ESTABLISHED” by iptables? If so, why? [duplicate]

CentOS 5.x I'm trying to confirm which specific rule in my iptables config is allowing return UDP traffic from my DNS server. I THINK, it's this one: -A RH-Firewall-1-INPUT -m state --state ...
0
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0answers
49 views

Server A can see B, but B can't see A

I am setting up a network with a CentOS client, a CentOS server and a BIG-IP. The network looks like this: (client) < -- > (BIG-IP) < -- > (server) The client is on a 10.10.20.x ...
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1answer
19 views

TLS Error on OpenVPN

Client: OpenVPN 2.3.4 64bit (Works fine connecting to my pfSense at home) Server: OpenVPN 2.2.2 installed via yum Followed this guide: ...
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0answers
23 views

Shared hosting server setup [on hold]

Right now I'm creating shared hosting infrastructure (one server as host, multiple LXC guests with inbound traffic to them via nginx, NAT their outbound traffic back to the Internet). So, could ...
0
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1answer
34 views

How to set DNS exclusively for a Network Namespace in Linux

I've created a network namespace in Linux. I thought there was a resolv.conf file for each namespaces created but it's not the case on my system. I don't have the following path ...
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1answer
19 views

FTP uploads have incorrect permissions when using vsftpd

I recently set up an FTP site using VSFTPD on Debian, and am running into an issue with uploaded directories not being able to be accessed. Files are okay but when I try to upload a directory or ...
0
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2answers
35 views

Restart tomcat on two different servers at same time

We are running the Apache solr on two servers. Unfortunately on heavy load of indexing (guess) servers going down. We are manually restarting the tomcat each time. When I google I find the way two ...
2
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1answer
43 views

Linux bridging for KVM

I have a Debian Wheezy machine on which I tried to setup KVM with bridged networking. Unfortunately, the bridge does not appear to forward traffic correctly. My setup is the following: The physical ...
2
votes
1answer
43 views

“No buffer space available” on connect

I'm seeing the error message "No buffer space available" when processes call "connect" on a Linux virtual machine. I'm having trouble tracking down the cause - hopefully someone can help! I've ...