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

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Configuring quagga to report Openvpn VPN subnet

I'm trying to use quagga with RIP2 to route traffic through an openvpn server. At the moment I'm having trouble because it's reporting the VPN subnet (172.19.2.x) as just a single IP (172.19.2.1). ...
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1answer
45 views

Which is the physical device behind the logical /dev/___ device

From time to time I get myself dealing with this same problem: from a linux logical block device (something below /dev/), I need to find the actual hardware behind it (something probably being listed ...
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1answer
42 views

MongoDB: insert operation fails but disk is free

I've seen the strange behavior of my server and first of all I looked at log file /var/log/mongodb/mongodb.log. There I saw the next lines: Wed Jan 7 16:33:31 [FileAllocator] allocating new datafile ...
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1answer
33 views

Windows multicast NLB with Linux clients

I'm (on behalf of a client, anyway) having some troubles with Linux accessing a multicast NLB cluster hosted on Hyper-V (waiting for more information on what version, but I don't think the version is ...
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2answers
43 views

Multiple physical volumes in a block device

I have a single (unpartitioned) block device in a server which is used as the single physical volume (pv1) to a volume group (vg1). Without attaching more storage to the server, is there any way to ...
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1answer
39 views

Secure Database Password Contained Inside a File

I've got a Linux based application (Java) that connects to an external database (PostgreSQL) in the same LAN. However, due the sensitiveness of the database contents I would like to avoid the admins ...
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2answers
414 views

How to auto run a script file when a file is saved?

I am editing a project on linux server.I have to run a shell script every time I changed the source. Is there a way that bind the save action to the script file.so I don't need to manually run the ...
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37 views

Notepad++ cant modify any file from Samba Share folder

I have created Samba Share in Centos 7. I usually access the files from the share and modifies in Notepad ++. Suddenly all files cant be able to save in the same location. When i tried to save the ...
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16 views

Weird Issue on 2008R2 while access Shares using linuxe SMB share

I have Linux share in my network.While using windows 2008 r2 user open any file from the share in user profile recent document it show only open document multiple time. When it open form windows share ...
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1answer
70 views

YUM Update Error

I am receiving the following errors when running yum update. I began receiving these errors after I had installed the incorrect EPEL package (epel-release-6-8.noarch). I have since removed and ...
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0answers
3 views

Missing linux in dual boot - grub also missing [migrated]

I had dual boot Windows and Linux (added after Windows). Computer shut down unexpectedly and I then didn't get the grub loader. I used the live cd to try and repair and get the grub loader showing ...
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1answer
71 views

SSH failing to connect, No supported key exchange algorithms

There are numerous questions with the same title however none of the solutions apply to my issue. I get the following lines of error in my sshd log: Jan 6 21:57:55 <computer name> sshd[30103]: ...
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1answer
45 views

How to find evidence of outbound network traffic in linux

I have setup a standard web application server in AWS using a bitnami Apache-Tomcat AMI. The instance is running in a public subnet with all Outbound traffic open but only allowing traffic inbound ...
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2answers
97 views

Linux is sending ARP requests to hosts in other subnets?

Setup Host B <--> Router <--> Host A Host A: IP = 192.168.1.10, Net = 192.168.1.0/24, VLAN = 1, Default GW = 192.168.1.1 (Router) Host B: IP = 192.168.2.10, Net = 192.168.2.0/24, VLAN ...
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1answer
48 views

Linux Process Terminates Mysteriously

I've spent hundreds of hours trying to track down the cause of a process that mysteriously terminates at random intervals on 64-bit CentOS 5, and I'm so far no closer to understanding why. We've ...
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1answer
74 views

Unidentifiable processes under Redhat Linux

Upon issuing a ps ax command on a server I see the following processes that I can't identify. Googling them yields nothing useful. Does anybody know what these are or how I would track them down? The ...
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1answer
74 views

Allow OpenVPN client to push it's own DNS servers, regardless of OpenVPN server's pushed dns?

There is an OpenVPN server running on a Debian and it pushes a DNS in the server config file: push "dhcp-option DNS 8.8.8.8" Is there an option to allow the users to change that DNS servers on the ...
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1answer
59 views

NIC bonding over bridged GRE-TAP: not getting replies… unless I run “tcpdump”?

I'm trying to get Linux bonding working over a VPN (GRE-TAP). The funny thing is, that it only works when I have tcpdump running on both hosts, but more on that later... There are two machines, ...
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0answers
7 views

USB3 to Ethernet stops after sometimes [migrated]

This is my first post to this website. I this that my question is related to serverfault cause it is related to ethernet communication issue. If you disagree please let me know what is the appropriate ...
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0answers
31 views

OVF template creation

I have a Linux server on DigitalOcean with my Python application. As a part of my new project, I need to create an OVF (Open Virtualization Format) of this Linux server which will be used on VMWare ...
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0answers
13 views

Why autoconf.h is not copied automatically to its place? [migrated]

I'm working on a clean Debian 7.7 install. After the install everything was working fine except the webcam in Iceweasel browser. After reading a lot I found that the best solution is to install ...
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2answers
40 views

What does this shell script mean? [closed]

#!/bin/bash /usr/sbin/ntpdate ntp.jst.mfeed.ad.jp I found such a script file,maybe it is used to confirm the time, can you explain it in detail?
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3answers
81 views

Why wouldn't I want to enable swap?

I recently had an issue where a rogue process caused some ec2 instances to run out of memory and crash. It probably shouldn't have been an issue, except I was using t2.small instances which are pretty ...
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0answers
16 views

Exim4 using Gmail as SmartHost can't show own e-mail address

I'm using one gmail account as the Smart Host, and it is successful to send email from my own email address to another address. But when the email is received, the sender is the gmail account, not my ...
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1answer
50 views

Bashrc function called ssh doesn't work

I created a function in my bashrc file so that when i ssh into something it automatically opens a tmux session. function ssht () { /usr/bin/ssh $@ -t 'tmux a || tmux || /bin/bash' } This ...
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1answer
67 views

VPN client can ping LAN machines but no other TCP/UDP service works

After just having succesfully configured my VPN server to connect my VPN clients to my LAN ( Expose internal LAN to VPN using CentOS FirewallD ) I find that pinging is the only thing that works. I ...
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1answer
39 views

Expose internal LAN to VPN using CentOS FirewallD

I have a (tinc) VPN setup with multiple clients that connect to a VPN server that sits on a LAN behind a firewall. I want to expose that LAN to the VPN that server is serving. I've seen a few examples ...
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1answer
18 views

Can we put condition in ChrootDirectory directive of Match Group in SFTP configuration?

I am using SFTP with active directory. After authenticating users I am redirecting all users to one directory that is upload2. But now I want redirect some users to one directory and some users to ...
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0answers
42 views

mdadm raid 5 failed drive recovery

My ubuntu mdadm setup is as follows /dev/sdb/ /dev/sdc/ /dev/sdd/ /dev/sdf/ I have the following 4 1.5TB drives in a mdadm raid 5 array. One of the disks (sdb) died on me leading the array to start ...
2
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1answer
34 views

Where does DSPAM fit into the chain

Is there any postfix guru here who knows that after a mail gets into postfix what's the order it gets forwarded between the internal filters and components? As I figured: 1, Postscreen 2, Recipient ...
1
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1answer
30 views

How to identify failed drive/port on 3ware card

I have a 3ware 9650-SE controller with 2 drives in RAID-1 configuration. The drive on "port 1" has an error but the drive cages aren't labeled. I tried using the cli to "identify" the drive but tw_cli ...
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1answer
97 views

RedHat: Can't install package GNOME Desktop Environment

I installed the package GNOME Desktop Environment on my machine running Red Hat version 6.4. more /etc/redhat-release Red Hat Enterprise Linux Server release 6.4 (Santiago) At the end of the ...
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37 views

Nginx secure port 443 is not opened/ connection refuse

I have installed nginx on my ubuntu VM. There I want Nginx to listen 443 port. My configurations are as follows. server { listen 443; server_name wso2test.com; ssl on; ...
16
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2answers
3k views

Where did my RAM go?

Note: before you jump in too fast, yes I read linuxatemyram.com! I have a server with 64GB RAM. free -m says that my RAM is full, and it's not because of disk caching: total used ...
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0answers
76 views

Why is a domain user unable to log on into a Windows 7 machine when Samba server signing is enabled?

I have an up and running Linux-based domain controller running Samba. The server functions properly as I am able to join Windows 7 machines to my domain and then log on into the machine using my test ...
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19 views

Why iptables state setting changes from 1.3.x to 1.4.x?

I intend to set iptables rules in the purpose of allowing to access outer website from current machine, but not allow any positive connection to this machine. Thus, my iptables is set as follows: ...
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2answers
67 views

3disk in raid 1 using half/half

Im using a mdadm software raid system on my new server which runs 3x120GB ssd drives. Currently, this is the preinstalled configuration that came with the server cat /proc/mdstat Personalities : ...
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votes
1answer
37 views

subdomains: will the external host urls still work [closed]

An outside company is building a website for our client as we are building the web app with dashboards. The website will have a "login" button which we will set up a subdomain to point to our server. ...
4
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0answers
38 views

Linux graphical password dialog trick security [migrated]

When we run a command by sudo, the password is asked [sudo] password for user If the sudo is not typed the password should not be asked. If asked, I would assume it as a fraud by the application. ...
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0answers
12 views

BIND logging to find “resolved address”

Currently my logging is set up like this : logging { channel query_log { file "/var/log/named/query.log"; severity info; }; category queries { query_log; }; Which results in: client ...
0
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1answer
49 views

Compaq Smart Array 431 with 3.13 kernel

is there any way to use Compaq Smart Array 431 controller on 3.x kernel? I have 431 board with 4 disks, that are seen by the controller during POST, but I'm unable to communicate with it on Linux ...
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0answers
22 views

Public key authentication plus challenge authentication

I am trying to setup 2-phase authentication based on this guide, but instead of entering the password I would like public key to be involved. If PubkeyAuthentication yes in /etc/ssh/sshd_conf then 2 ...
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0answers
11 views

AH00157: Couldn't add listener to pollset; check system or user limits

Firstly thank you for helping... Apache crashes and getting log files, How can I solve this error? /var/log/httpd/error_log ... ... [mpm_prefork:emerg] [pid 19347] (22)Invalid argument: AH00157: ...
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3answers
80 views

Delete the contents of a huge directory in CentOS 6.6 [duplicate]

I have a directory in my webserver that has 116 thousand cookie files in it. How do I delete them? rm -r /var/www/html/secured/cookies/* I tried this but it does not work. -bash: /bin/rm/: ...
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1answer
35 views

Resilvering for data transfer?

I currently have a production server with four drives in raidz2 and a backup server that is identical in configuration and hardware. I'm currently doing a transfer of data using rsync between the ...
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1answer
103 views

sudo apt-get update is not updating repositories in Debian Wheezy

I am trying to update repositories using following command but it is failing: sudo apt-get update Here is the output of above command: Hit http://dl.google.com stable Release.gpg Hit ...
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1answer
75 views

yum dependancy error - looking for the wrong version of php-mysql

So I was trying to upgrade from MariaDB 5.5 to 10.0. (which is essentially MySQL fork) The installation instructions say to yum remove mariadb-server mariadb-common mariadb-compat then re-install ...
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0answers
6 views

Linux - On boot do push-button-connect to strongest wireless [migrated]

I'm trying to configure linux (in this case CentOS) to automatically connect to the nearest WiFi via "push-button-connect". This micro computer has no keyboard or display, so the goal is to hit the ...
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0answers
47 views

RHEL hang on boot - first on sendmail, then on iiimf

I can't figure out what this box is doing. Running RHEL 4.8 - it was rebooted and now it won't come back up. Diagnostic with Seatools shows the drives as good, fsck checks out as well. I can get into ...
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0answers
41 views

firewall-cmd forward rules for interface with multiple ips

I'm looking for a way with firewall-cmd or another command to do the following. An incoming public interface has multiple ip addresses bound to it. How can I forward ports only for one of the ip ...