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

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How to force a Linux DHCP client to get a different IP address [migrated]

Situation: unconfigured network interface eth1. As root, I give command dhclient eth1, and get an IP. Now I want to change this IP from client side, force DHCP client to get a new address. Answers of ...
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1answer
8 views

IO does not share in multiple CPU

In my linux server IO doesnot share in multiple CPU. as below output ata_piix intrupts share in only cpu0 [root@manage ~]# uname -a Linux manage 3.14.24-1smp #12 SMP Tue Mar 17 15:33:27 IST 2015 ...
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4 views

Unexpected reboot on linux clustered servers with init: tty (/dev/tty2) main process (9390) killed by TERM signal

I managed 2 linux server clustered. And only 1 of servers is rebooted suddenly. It happens several times. Then I checked /var/log/messages. I just found below logs. Mar 24 09:25:52 xxxxx init: tty ...
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7 views

Back up incremental snapshots to another volume

I'm looking for a way to implement something close to the following backup scheme: Initially, a full image is copied to the backup target. Periodically (e.g. nightly), only blocks that have changed ...
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1answer
13 views

How do I stop my domain from being redirected to my IP using apache webserver?

I have forwarded my IP using Google Domains to a specific URL. But when I access that URL www.mindofmetadata.com it gets forwarded to my IP. Why is the url not showing up in my browsers address bar? I ...
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0answers
19 views

How to see if an user is connected [on hold]

I have a linux server and the users connect over ssh. I want to create a shell script to verify if a specific user has been connected to the server in the last month. If so, I should print the last 3 ...
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1answer
39 views

Apache on CentOS 6 Unresponsive [on hold]

Twice this morning, somewhere early this morning, and then again around 8-9AM, our Apache server was unresponsive, though the service showed as running. We reset it with service httpd restart, which ...
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1answer
23 views

Creating High Availability Netflow Collector

I'm currently working on replacing our existing Netflow collector that is EOL with a new one. The goal is to support around 4 million flows/minute and have HA capabilities. Below is my initial ...
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1answer
19 views

What's a good RLIMIT_CORE setting if I only want backtrace?

all My C++ program generates core dump as large as 2GB and it quickly fills up all usable disc space. What I really need is only backtrace. I was wondering what's the safe size of core dump file if I ...
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14 views

Put “.nfs” files created by NFS client in another location?

The setup is a Linux machine that mounts a filesystem over NFS. There is a process that needs to recursively remove directories on the NFS filesystem and ensure the directories are successfully ...
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12 views

Traffic accounting with iptables with multiple chains

I have a linux firewall setup with 3 zones: - green for LAN (192.168.0.0/24) - blue for WLAN (192.168.1.0/24) - orange for DMZ (192.168.2.0/24) All zones have systems running and I want to know what ...
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23 views

Problems on mounted NFS: 'No such file or directory' but files and directories exist

So we are having a medium-sized NFS4 storage server running CentOS 6.6 exporting an NFS share '/storageDat' (which is the NFS root, with two RAID volumes bound in there: ./dat1 and ./dat2); Export ...
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0answers
5 views

Open VZ + DirectAdmin solution

I am using DirectAdmin for many years and I like it but I always hate the fact that everything running inside single instances of Linux. From other side OpenVZ is good but missing those nice features ...
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1answer
39 views

Prevent changing ownership of a file

I have file with 777 permission. How can I prevent changing ownership of that file by others? ie I need to prevent chown x:y myfile myfile is a log file written from web. it's ownership is www-data.
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27 views

Webserver on linux times out outside local network

Apologies ahead of time if I mess up any terminology here; I am new to this realm. I have setup Jira (bug tracking software) on a linux box in my local network. I have a subdomain ...
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3 views

How to remove local host dns settings on mac [migrated]

I'm having an issue removing some local dns settings on my mac that's running yosemite. I normally use the /etc/hosts file to direct requests from development sites to my guest Vagrant VM. Sometimes ...
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1answer
16 views

Migrate vagrant Ubuntu VM to physical machine

I am attempting to use vagrant and a puppet workflow to configure a Ubuntu production server VM which will host a web application. I want to be able to reuse this workflow to configure multiple ...
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1answer
18 views

Mount VM filesystem on host

I'm using Proxmox for virtualization and I need to mount my KVM VM filesystem inside the hypervisor. Is this possible without shutting down my VM? Basically, I need a script that could do following ...
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0answers
12 views

rpm -qa return's nothing [on hold]

I am getting below output on my lx-container host rpm -qa | wc -l 0 which rpm /bin/rpm rpm --version RPM version 4.8.0 rpm --verify rpm package rpm is not installed I did rebuild rpm db but no ...
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0answers
8 views

creating snapshot for mongodb

I am trying to create snapshot for mongodb on centos 6.6. root@ ~]# lvscan File descriptor 12 (pipe:[23409]) leaked on lvscan invocation. Parent PID 3579: /bin/bash File descriptor 13 ...
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24 views

Can ping but not connect to Samba

I have installed Samba on my machine (192.168.178.50) and altered /etc/samba/smb.conf to add a share: [vs] comment = Visual Studio path = /home/mrt/Dokumente/vs/ browseable = yes read only = no ...
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1answer
172 views

Can't access domain internally via public IP address [duplicate]

I have a dedicated server running Proxmox and a VM inside Proxmox running Debian 7 (Wheezy). As I only have one IP address, I'm using iptables to forward ports to the VM. My ...
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1answer
22 views

(ssh) Connection closed by

unfortunately I don't have access to ssh server, I can only see: Platform: i586-pc-linux-gnu Compiled with: liblua-5.2.3 openssl-1.0.1k libpcre-8.35 libpcap-1.6.2 nmap-libdnet-1.12 ipv6 Compiled ...
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1answer
12 views

Script triggered by udev to examine partition tables and test if it's a ceph disk

I'm wanting to trigger using udev under CoreOS a script on disk add/remove. The purpose/goal is to automatically mount ceph data partitions to a specific directory in preparation for ...
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20 views

how to match up setting in security/limits.conf with nginx.conf for at least 5k users per minute?

I know by reading similar posts that worker_connections * worker_processes = user connections per second so I would need to set soft nofile to same as above result? Also, how do I count max ...
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27 views

OpenVZ can't reach the internet [on hold]

I have a vps running and it seems to be ok, but I am unable to access to internet. I am only able to access the internal network. What I want to do is give the vps a ip (access to the outside world), ...
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1answer
31 views

Error when trying to install Ubuntu 14.10 Hyper-v VM from Virtual DVD .iso [on hold]

I'm trying to install a Hyper-v Gen 2 Ubuntu 14.10 Virtual Machine via a DVD .iso that I have attached as a virtual DVD on my Windows Server 2012 R2 First, two things that I know will be asked: ...
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0answers
18 views

Find which php files are causing high CPU load on linux [on hold]

I have a wordpress site running on my server. It's eating a lot of cpu. Searched all internet and didn't find any script or command to view which files are causing this load. Tried commands like top, ...
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0answers
17 views

Linux Minecraft Server Connection errors [on hold]

I set up Minecraft on a Linux server. When I use the following command, the server starts up successfully and I'm able to log into it. I can then use Minecraft for some time without any problem. ...
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1answer
65 views
+100

Group directory challenge

Have a challenging question for you. Have a linux box. Need to create directory where users would be able to create files, but remove/modify only files created by them. Simple enough to have sticky ...
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1answer
30 views

Debian diffence between kernels [on hold]

Debian Wheezy installer What's the difference between the first and the second kernel?
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1answer
20 views

Pros and cons of installing php 5.6 and mysql 5.6 on debian 7 wheezy

I was setting up a VPS server for my client and we had talked that I would install the last stable versions of the programs. Now, in Debian 7 wheezy by default php 5.4 and mysql 5.5 are available. I ...
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0answers
15 views

Can't access my apache server from outside LAN (Raspberry Pi) [migrated]

I know this question was asked a lot, but unfortunately none of the posts really helped.. I'm trying to set up an Apache server on my Raspberry Pi. I managed to set it up correctly I think, but I ...
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0answers
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cmake error in mysql extension installation [on hold]

I am trying to install a MySQL extension (http://mychem.sourceforge.net/doc/apas03.html#linux_installation) and i follow instructions. When i write >cmake . it raises an error, also i get "MYSQL not ...
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2answers
56 views

Can you change raid type on an active server?

I was just dabbling with a few different raid types recently for some performance testing and I was hoping someone could answer this question for the sake of knowledge. Is it possible to change the ...
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1answer
19 views

Linux SSH abnormal activity

I found an IP 192.168.1.100 accessed to localhost with public key successfully for 38204 times within two weeks. I checked secure file for more detail about this IP. This client logged in for every ...
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0answers
22 views

Unable to get any type of connection using mysql on LAN [on hold]

My question is rather simple, I have a Windows 7 machine that is hosting an Apache server and a MySQL server using the XAMPP control panel. Both of these have been installed as a service on the ...
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0answers
32 views

nginx not start , site down [on hold]

today my vps not function , every web site hosted is down, i have centos 6.6 and web hosting panel (vesta) in service of vesta nginx not start, i try to deactivate the nginx for the site but the web ...
-1
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1answer
23 views

How do I set up a “reverse proxy server”? [on hold]

My office uses SAS Visual Analytics, which by default is configured to run at http://server.example.com:7980/SASVisualAnalyticsHub. In order to configure the site to be available at ...
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1answer
17 views

Investigate to /proc/loadavg

Review linux load average documentation (to try to solve a problem) I'm ask if a kind of state of process (zombie process?) can affect to anomaly that causes an high load average of my system. So, ...
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1answer
43 views

Copy files from find command [on hold]

I am trying to copy all file.log files found using "find". The problem is all files are named the same and it is only copying over one file. I need to find a way to rename the files in the command or ...
-1
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0answers
15 views

Linux - Vmware Player On Windows 8.1 [on hold]

Can be in Vmware Player on windows 8.1 used only Linux/ubuntu files or entire software, regardless of size, also? I only see command prompt lines and no userinterface spaces so I wonder how would I ...
0
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1answer
31 views

How to scp file to remote servers' root directory and run sudo commands?

NOTE: The servers does not share the same password but I will setup no-password login at first. Here's the use case, I need to do these below step by step in my deploy.sh: scp files to remote ...
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2answers
43 views

Identify where and how background process are started and where they comes from

First the short story: I need to migrate a server (applications, configurations and so on) and I have no clue about what is in there, no docs, people at charge just abandon and didn't leave any ...
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27 views

Screenshot of screen (linux) [migrated]

Is there a way to take a "screenshot" of linux screen command. In other words can "screen -r" command to be called with the same behaviour as "top -b -n 1" - print contents once and exit. Background ...
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0answers
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Linux (Ubuntu 12.04). Setup OpenSSL and osslsigncode

I'm a beginner in using Linux. I have already installed OpenSSL 1.0.1 and after installing osslsigncode I have: osslsigncode -v >osslsigncode 1.5.1, using: OpenSSL 1.0.1 14 Mar 2012 ...
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12 views

Is it necessary to install FTP on Azure Unbuntu VM to write files

I just created an azure vm with Unbuntu and noticed that I am able to FTP into it without having installed an FTP app like vsFTP. It just works, as far as FTP viewing goes. I can read files from my ...
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1answer
9 views

How can I change the directory in wich pam_mkhomedir creates the user's home directories?

I am using pam_mkhomedir to automatically create user's home directories when they first log in. However, the home directories are created inside the /home directory, while i need them to be created ...
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0answers
5 views

Squid 3.1 Monitor HTTPS logs [migrated]

I have configured squid3 on Raspbian Wheezy OS, here is the configuration file (squid.conf): acl manager proto cache_object acl localhost src 127.0.0.1/32 acl to_localhost dst 127.0.0.0/8 acl ...
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3answers
39 views

What is the most effective way to block IP address in Application Layer?

I understand that most Routers/Firewalls are able to block IP tables in the network level. IPtables for instance is quite effective. However, I want an application layer IP block.I have an HAproxy ...