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

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Why isn't my ZFS pool expanding using ZFS on Linux?

I have a ZFS zpool on linux under kernel 2.6.32-431.11.2.el6.x86_64 which has a single vdev. The vdev is a SAN device. I expanded the size of the SAN, and despite the zpool having autoexpand set to ...
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2answers
66 views

Full data backup to Amazon S3

I have an Ubuntu server hosted on Digital Ocean that has outgrown it's existing backup solution. The relevant parts of the stack I use are Node.js, MongoDB, and Elasticsearch. So far backups have ...
1
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0answers
19 views

debian networking lacp throughput and redundancy

I am encountering the following scenario: Physical server w/ 4 NICs and two HP ProCurve GigabitEthernet switches in a stack $Server runs debian (proxmox ve latest) I'd like to configure the network ...
0
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1answer
16 views

How configure environment variable with AcceptEnv

In /etc/ssh/sshd_config, there is an option called AcceptEnv that allows the ssh client to send environment variables. I need to be able to send a large number of environment variables, how can i do ...
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0answers
10 views

Complete full virtualmin setup from command line

I'm working on adding a feature to a suite of tools my clients use that will allow them to enter the API key of their DO account, and easily create DO droplets with Virtualmin on them, and setup and ...
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0answers
11 views

How long does it take to change partition sizes?

I lease a dedicated web server running CentOS. It has 2x120GB SSDs in a software RAID-1 array. The following partitions exist on the machine: MOUNT TOTAL USED ====================== / ...
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0answers
18 views

Restore “snapshot” of OS partition on physical Linux server to spare partition then boot - caveats?

We're planning to bring a new physical server online in the near future and as part of the disaster recovery / change management plan, I want to be able to easily roll back the operating system and ...
1
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0answers
7 views

NIS not respecting files first in nsswitch.conf

Okay, first off, I know NIS is a turd, but it's what we've got until we do a major migration next year. Today we had a NIS server outage which predictably prevents user logins. What surprised me was ...
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2answers
41 views

List of packages for RH 5.x

I need to install SSSD onto some of my client's servers, but a few of them are pretty old. Is there a list of all of the packages in the repository for a specific release of redhat? Specifically I ...
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1answer
22 views

How do I run TomEE as a service on RHEL6?

cat /etc/passwd (last line): tomee:x:990:987::/home/tomee:/bin/false I need to make init.d script to run Tomcat EE like "service tomee start" So I have 2 problems: 1. How I can execute command ...
0
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1answer
11 views

PHP-FPM on Linux, SCHED_BATCH or SCHED_OTHER?

I have a Linux webserver (Ubuntu 12.04, kernel 3.2.0) running Magento with quite a number of PHP-FPM child processes. Since Magento is a heavy framework, I often see several child processes to baloon ...
2
votes
1answer
14 views

Apache2 not able to list directories or files that do not have o+r set

I have an Apache webserver that we are preparing to serve data uploaded via FTP/S to our customers over the more convenient HTTPS protocol. At the moment I am using mod_authnz_external to allow the ...
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0answers
22 views

NXLog unable to read complete .csv file

I try to work out why NXLog can't read the complete .csf file witch has the same name but gets edited every 12 hours by windows for a export. conf file of NXLog: #define ROOT C:\Program Files\nxlog ...
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votes
1answer
12 views

How do i find the overcommit ratio for CPU on a KVM host or for that matter on any hypervisor?

I have a host and I have installed KVM on it.Now I need to know how much overcommiting of resources it allows, CPU, memory. Is there some command to get the ratios or it all exists in theory and no ...
0
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1answer
12 views

update passwords [user's already existing in ldap]

I want to update passwords [user's already existing in ldap] of the user by importing data from /etc/passwd & /etc/shadow How to achieve this ? I will give the overview of my setup. nodes user ...
0
votes
1answer
7 views

Filezilla transfer file name colon replace

I have transferred a massive amount of files by filezilla. But a few scattered files are pending being transferred. They had failed since my filezilla server is on windows and filezilla client is on ...
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2answers
43 views

CentOS Server - Available disk space constantly drops

The result of the df command : Filesystem 1K-blocks Used Available Use% Mounted on /dev/sda2 864000688 809338092 10773908 99% / tmpfs 32965940 0 32965940 0% ...
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votes
1answer
24 views

Make Apache webserver in Ubuntu point to another location [on hold]

I am completely new to Linux administration. I have an Apache server up and running. When typing "localhost" in the browser, the default Apache page from /var/www/html is displayed. Now I have to type ...
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0answers
20 views

Create and synchronize development, staging and production servers?

I'm building a PHP application, and I'm running all the development environment (Netbeans IDE, Apache, PHP and PostgreSQL) inside the same virtual machine. I would like to prepare three diferents ...
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0answers
11 views

what the best approach to get the network values on Linux machines [duplicate]

what the major difference between ip addr command to ifconfig -a command? both command are give the same values network IP's ip addr 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc ...
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votes
1answer
29 views

Point DNS zone to local web server [on hold]

I have a DNS virtual server and a virtual web server, among others (unimportant). The FQDNs are registered as dns.example.com and web.example.com, respectively. The virtual DNS manages the ...
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votes
1answer
23 views

Creating a Firewall / Gateway Server [on hold]

I'm looking to increase my server network security by creating a Firewall + Gateway server for a web server. The servers are all part of digital ocean. The webserver is a LAMP stack with multiple ...
0
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1answer
21 views

Do we need to mount or not ? for Oracle ASM

i am comparing the differences between installing a db with its files on a traditional filesystem and on oracle asm with traditional filesystem, it seems like there is no concern for disk persistent ...
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0answers
20 views

GlassFish 4.1 Slow localhost Ubuntu 15.04

I have a GlassFish 4.1 Server Instance running on Ubuntu 15.04 Desktop Edition. I use this as a development server, where NetBeans will automatically deploy my packages as I work on them, for easy ...
0
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1answer
32 views

GNU screen detached cannot write to file after ssh logout

I am ssh-ing into a Linux cluster that uses an AFS home directory. I am trying to use GNU screen to run a long-running program in a detached screen. If I remain logged in the program executes ...
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2answers
17 views

rsyslog (local) and remote logging

I have several linux servers that I want to monitor the log files. I thought it would be great to setup a central log server that can capture incoming rsyslog packets. Each hostname would have its own ...
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0answers
15 views

fix nginx forwarding slashes and get params

(Cross posted from stackoverflow...) I keep getting a strange issue on nginx right now. I have two nginx servers, one hosting content that I want to forward to the other server. The one that is doing ...
0
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0answers
15 views

Nginx, gitlab, subdirectory, alternate port. What do I do? [on hold]

I've installed VestaCP on my CentOS VPS. I've installed the Gitlab-ce installer, which has it's own nginx server. That server is accessible via. https://example.com:6443 How do I make a proxy ...
2
votes
1answer
14 views

Find modified selinux booleans

I have a CentOS 6.6 server that was setup by someone else. I'll be recreating this server from scratch on a new box and I'm wondering if there is any way I can find out what selinux booleans have been ...
1
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0answers
20 views

How to start tomcat with faketime within a docker container?

I use docker to deploy a Java web application in tomcat. For testing purposes, I want to force the system date to a specific value. With Docker it is not possible to change the container date without ...
0
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0answers
43 views

Cron Job Crashes the Server?

Can a CURL Cron Job fired every minute crash a server, or it's a problem with the code? I had a shared hosting that worked great, then I added a cron job with enters, using CURL, to a specific URL ...
1
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0answers
27 views

Network connection slow to server, only from one device

I have looked around, but there doesn't seem to be anyone with the same problem. I am getting almost no connection from my console (laptop) to one of my servers (Raspberry Pi 2 B) . All other ...
1
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0answers
25 views

Setting up a caching system r/w in DCs across continents

We are going to implement a caching system to make our front-end servers which are located in different data centres in Asia, America and Europe can read and write some small JSON data in the shortest ...
2
votes
2answers
44 views

bash + how to hold shell scripts

Is it possible to hold/stop the bash script progress without to kill the process? ( by kill command ) or other command For example this script - install_linux_pkgs.bash , will install Linux pkgs ...
-1
votes
1answer
28 views

Open Google Chrome on Centos 7 and screenshot it [on hold]

I have Centos 7 server installed on AWS and I installed "google-chrome" on it using a sample code on the internet which works fine. cat << EOF > /etc/yum.repos.d/google-chrome.repo ...
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votes
0answers
37 views

Damaged LVM Volume

I am working on a server that has no backups. The previous sysadmin created an LVM with 10TB of space, and one of the drives has failed. I'd like to try to extract data from the working drive, but ...
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0answers
12 views

How to prevent virt-viewer from asking a password

I am aware of what file I need to create, in order to prevent virt-manager from prompting me for a password. However, I'd like to create a shortcut on my desktop that opens directly the virtual image ...
-1
votes
1answer
24 views

Crontab Certain Days of Week Colliding

I've setup a backup rotation on a centos 6 crontab, one script should run Mon-Sat, the other on a Sunday, never on the 1st of the month. However the weekly (Sunday only) script has been running every ...
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votes
1answer
16 views

HP Smart Array 6i upgrade firmware on Ubuntu

How can I upgrade the firmware of my HP Array controller 6i? can I upgrade using hpacucli? or any other CLI utility? The server that I want to upgrade is a HP Proliant DL360 G4 with Ubuntu Server. ...
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0answers
13 views

does WifiDog provocates splash popup? [on hold]

I plan to use WifiDog for a captive portal proj. But I wonder if there is well a splash/popup when connecting the Wifi as a client. Does WifiDog ensure this OS-reaction ? Thanks
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votes
0answers
18 views

iptables, redirecting all ingoing connexion

I have this iptables conf on my linux mint... What does it mean ? Chain INPUT (policy ACCEPT) target prot opt source destination ACCEPT all -- 13.37.42.0/24 ...
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votes
0answers
22 views

iptables : redirect all ingoing traffic to www [on hold]

I have a Wifi hotspot, made with a linux machine. I d like to redirect any ingoing trafic to my index.php localsite. My public interface is wan0. Is iptables the best solution ? How can I do that ?
3
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0answers
45 views

How to troubleshoot rx_missed_errors?

Migrating from old server to new one, after setting all services, I notice a big dropped rx packets in my NIC: $ ifconfig eth2 | grep 'RX.*drop' RX packets:2059646370 errors:0 ...
0
votes
2answers
59 views

How can I check who created a file on server?

Looking through server logs I've noticed some mailicious PHP files hidden among WP and Joomla folders and I'm wondering how they got on the server. Is there a way to review that? It's a shared hosting ...
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votes
0answers
18 views

How to add unallocated space into linux partition in redhat 7 [on hold]

I am new to Linux system.Now I am facing a problem that I could t add my free space into Linux extended partition.Actually I want to create logical volume but,when I do that it shows "no free sectors ...
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0answers
25 views

sudo password being rejected, but system log-in work

adduser bob sudo usermod -a -G sudo bob I can log-in via terminal with the bob password but when i try any sudo command It asks for password but says it is incorrent. It is on ubuntu 12.04.
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votes
1answer
46 views

How to get screen pixel data from a Centos server [on hold]

I am running a Centos 7 server and I installed LAMP on it and everything works fine. I can SSH it and do all my stuff. But it happens that I need to once every hour open a website in Chrome. I cant ...
2
votes
1answer
43 views

systemctl Failed to parse kill mode, ignoring mixed

On CentOS 7 I wanted to check the status of the nginx service: # systemctl status nginx -l nginx.service - The nginx HTTP and reverse proxy server Loaded: loaded ...
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0answers
18 views

Logrotate: Error creating outfile, file already exists

I run logrotate in a daily cron, today I got an e-mail about a file already existing error: error creating output file path/to/search.log.2014-10-03.1412289722.gz: File exists But I'm not sure why ...
0
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1answer
29 views

Running a windows console application on Linux debian server

I was wondering if it is possible to run a windows console application (.exe) on linux (server no GUI). I looked into Wine but you need a GUI for that.