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

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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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12 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
2 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
30 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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0answers
16 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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0answers
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 ...
0
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1answer
14 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
15 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
11 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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22 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
169 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
18 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
11 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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0answers
16 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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0answers
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
27 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
57 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
19 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
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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1answer
45 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
21 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
31 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 ...
1
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1answer
16 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, ...
0
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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 ...
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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 ...
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1answer
29 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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0answers
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
10 views

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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0answers
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 ...
0
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3answers
36 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 ...
1
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1answer
24 views

Route new outbound traffic

I am looking for some iptables rules which can help me to route some traffic from a server : Client 1 ----| Client 2 ----| |----------| Client N ----| ssh, ...
7
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2answers
110 views

Linux device-mapper maps LVM PV nested inside LV when taking snapshot

Which is really messing with my plan to back up this machine... I have a server which is a KVM hypervisor to several virtual machines. One of these is running Docker. It has its Docker volumes on ...
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1answer
41 views

How can i fix corrupted file system in linux

I shifted my docker container to new server and i think in the process my file system got corrupted. This is the output i get root@2389374b235b:/var/local/atlassian/confluence/plugins-osgi-cache# df ...
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0answers
10 views

Connect to encrypted Windows 2012 samba share on Linux

I have a Windows 2012 samba share set up. When I right click on the share, go to properties, then settings, I have the box checked marked "Encrypt data access" When this box is checked, I cannot ...
0
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1answer
20 views

ubuntu 12.04 sssd sudo not working

This is for Ubuntu 12.04.5 LTS I am trying to implement SSSD as a client and everything works all right BUT SUDO I cannot see anything happening in the sssd_sudo.log file at all but the usual file ...
2
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1answer
33 views

BIND DNS A Record File

I've been adding about 10 DNS A records a week for the past 2 weeks. After updating a record using nsupdate it occurred to me that maybe I should find a way to separate the DNS A records from the ...
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0answers
17 views

detecting whether GPUs are accessible before running nvidia-smi during boot to create dev files

In the past, I've successfully configured Ubuntu systems containing NVIDIA GPUs to launch nvidia-smi in the background from within /etc/rc.local during the system boot to create the requisite ...
1
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1answer
19 views

Installing Samplicator on CentOS

I'm trying to install Samplicator to test Netflow central collector and then forwarding to other collectors from there. I mainly want to use Samplicator due to it being able to easily sample the ...
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0answers
11 views

php generated css no output, net::ERR_INCOMPLETE_CHUNKED_ENCODING

I am running apache on an ubuntu installation. Several webapps are running on the same server. I installed a new app, which required the pdo-sqlite extension to be installed. Now my server is ...
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1answer
20 views

Linux VNC doesnt accepting my password

I set up a tight VNC server. I used this tutorial: https://www.digitalocean.com/community/tutorials/how-to-install-and-configure-vnc-on-ubuntu-14-04 The VPS is hosted on Digitalocean. The VNC server ...