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

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system log file not getting updated

I am trying to add my system call to the Ubuntu. It is a simple hello world function that I am trying to write to the log file using printk.The code is as follows: include asmlinkage long ...
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Debian Linux Bridge Mode not forwarding

I am trying to bridge lan adaptor eth0 with the eth1 interface exposed by sierra wireless lte modem. When i create a bridge using the following commands brctl addbr br0 brctl addif br0 eth0 eth1 then ...
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3 views

Daemontools (djbtools) freezes processes after system restart

We are currently using the latest daemontools (http://cr.yp.to/daemontools.html) to manage our background linux (AWS-linux) application servers. Our application servers run in JVMs: ...
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8 views

Can I get Vsphere cluster networks (and thier details) using Ruby?

(On linux) I am looking for a way to get my VMware Vsphere networks details using a Ruby script. I tried to find a way using rlane/rbvmomi on [1]: https://github.com/rlane/rbvmomi but I could nt ...
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1answer
18 views

How do we extract ftp client information from proftpd logs

using proftpd 1.3.4. Needs to see which FTP client is being used by end user any idea where it will be logged. or what configuration changes it will need
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1answer
35 views

Bash linux increment variable

i am trying to increment a variable name inside a for loop to get 4 dynamic variable in each loop, this is an example while read line do for n in `seq 1 4` do ...
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0answers
3 views

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
19 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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5 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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10 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
15 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
22 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
40 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
24 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 ...
2
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1answer
20 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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0answers
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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0answers
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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0answers
25 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
6 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
41 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
17 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
9 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 ...
2
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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 ...
1
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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
32 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
19 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
67 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
21 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 ...
-2
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0answers
12 views

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 ...
-1
votes
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 ...
-3
votes
0answers
33 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
votes
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 ...