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

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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 ...
0
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2answers
60 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
24 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 ...
1
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1answer
20 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
47 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 ...
0
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2answers
51 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 ...
0
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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 ...
1
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0answers
20 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
13 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 ...
0
votes
1answer
15 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 ...
0
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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
60 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
28 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, ...
8
votes
2answers
160 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 ...
0
votes
1answer
50 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 ...
1
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0answers
21 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
votes
1answer
42 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
votes
1answer
45 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 ...
1
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0answers
26 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
35 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 ...
1
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0answers
48 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 ...
0
votes
1answer
25 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 ...
0
votes
1answer
46 views

PXE or other : deploy images on single board computers (SBC)

We have a few SBCs of various modeles (but a lot of freescale). When received, these SBCs are bare (no BIOS/U-boot). We generate linux embedded images with Yocto (using U-boot as bootloader), and we ...
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0answers
10 views

Ucarp on vlans in trunk - debian

is it possible to use ucarp on vlan interface in debian ? I am trying : auto eth1 iface eth1 inet static address 192.168.0.1 netmask 255.255.192.0 auto eth1.10 iface eth1.10 inet static ...
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votes
1answer
42 views

How to install git-daemon on red hat enterprise 6 [closed]

I need to install git-daemon on Red Hat enterprise Linux 6.2, with http support. What are the correct package to install? It is necessary to create a specific user or group? I'm looking for a simple ...
0
votes
1answer
32 views

NFS Server “outbound” bandwidth consumption

I need to understand about something in NFS (Server). Let say i have: Two Different Clouds (One Server on each) One NFS Server One Apache Server (as the NFS Client) with a NFS Mounted Directory ...
0
votes
0answers
7 views

Last partition fails to dd copy [migrated]

I'm trying to copy the NOOBS Raspbian distribution's 8GB SD card to a new card. For some reason, the logical partition /dev/sdb6 will not copy correctly. Accessing fdisk /dev/sdb after the attempted ...
1
vote
1answer
58 views

Amazon EC2: OpenVPN server won't route bridged packets from client to VPC subnet

I have a bridged OpenVPN setup on a Linux server in an Amazon EC2 VPC. (Spent hours on docs, reading similar problems, here, openVPN forums, no luck yet.) The bridged interface is up and contains ...
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votes
0answers
45 views

Azure intermittent outbound connection failure to EC2 [closed]

I have three Linux VMs (Ubuntu 14.04) running in a vnet, like this: Host Internal IP External IP prod1 10.0.1.1 104.45.234.56 <---\__ load balanced prod2 ...
0
votes
1answer
26 views

Why can I boot and install windows from a MS MDT server, using ISC for the dhcp server, but only under lageacy bios, not UEFI?

Setup is: Windows 2012 R2 with MDT 2013 Ubuntu Server 14.04.2 running ISC dhcp Client can be VM/Hardware doesn't matter. If I stay in legacy bios mode things work splendidly. When I switch to UEFI, ...
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votes
1answer
36 views

Are the UID of users from a domain maintained locally in a machine?

This could be total nonsense but as I am new and am trying to learn. I came across this question. I have seen many of my office linux machines connected to some domain. I am wondering as if a ...
-1
votes
1answer
75 views

How to delete all php files first line? [closed]

How to delete all php files first line? I used the following command, but it works only for present directory and not recursively. sed 1d file.php Please tell me the command or script which delete ...
0
votes
0answers
17 views

How do i prevent executing os command in oracle 11g [migrated]

I have Oracle 11g installed on a linux serveur and i'm looking for a way to prevent sysdba from executing system command through oracle(Using java for example).
1
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1answer
51 views

Can cacti display some TEXT output from mib at my graph?

My switch can check if there is an SFP connector present in its ports and their respective link status. I want to display this information in Cacti graphs for each interface of my switch. The switch ...
0
votes
0answers
33 views

Forwarding ports and traffic to VPN tunnel

I've installed OpenVPN on my VPS. I have one question: how to forward traffic going to that VPS to go to VPN tunnel created with my local PC. I will use TCP connection. The whole traffic will be like ...
1
vote
1answer
51 views

Nginx doesn't start using systemctl

I have defined a custom error_log for a virtual server inside it's directory like so: server { listen 80; server_name www.example.com; root /home/www.example.com; ...
-1
votes
1answer
30 views

Will upgrading to a faster server make my videos load / stream quicker for users? [duplicate]

General question that even a godaddy tech couldn't really answer for me. Im making a website with lots of video on it, most are embedded from youtube. I know, to stream videos, I should upgrade to a ...
0
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0answers
44 views

Got hacked. Want to know how and protect the others similar setup instance [duplicate]

The website got hacked, would like to know how / possible approach the hacker did and how can i protect the server. This is the information of the hack: http://www.zone-h.org/mirror/id/23884086 The ...
-1
votes
0answers
62 views

Frequent disk usage by kworker, jbd2

So I came across my disk access light blinking an awful lot for what should be an idle processor. The Problem There's a kworker job usually named kworker/u16:n, where n is usually 0, 1, or 2 which, ...
-2
votes
2answers
45 views

how to change the special port output source address?

I want to change the my datapackage from port 25 to another internal address(192.168.2.253). iptables -A OUTPUT -o em1 -p tcp --dport 25 -j SNAT --to 192.168.2.253 But I get the output is: ...
0
votes
1answer
85 views

How can I configure multiple tap interfaces for a single KVM virtual machine

I am trying to setup a VM using Linux KVM for a F5 BIG-IP VE deployment (used in a lab) ...
0
votes
1answer
30 views

How can I set environment variables for a different user

I'm trying to get 2 docker containers started and linked together with a rails app. This app relies on these environment variables: POSTGRES_PORT_5432_TCP_ADDR POSTGRES_PORT_5432_TCP_PORT When I ...
58
votes
3answers
6k views

Is it possible to reboot a Linux OS without rebooting the hardware?

Is there a way to reboot a Linux system (Debian in particular) without rebooting the hardware? I have a RAID controller that takes a bit to get itself running before the OS starts up, and I would ...
0
votes
1answer
35 views

Ubuntu remount a root mount that's changed to ro as rw without rebooting

Because of errors=remount-ro an underlying NFS blip caused my root mount to be remounted as read-only. I know there is nothing wrong I need to worry about. How can I remount this as rw without ...
0
votes
1answer
37 views

Squid running in intercept mode on same machine as browser keeps giving access denied

It's been a while since I last touched squid and I've been sitting here figuring out this problem since the last few hours why my squid setup on this standalone server machine (behind router nat) ...
1
vote
1answer
24 views

Upstart log stdout and stderr to file not working as expected

When in bash I can run: java -jar server.jar &>> log.txt And it combines the stdout and stderr into log.txt. However when I have this line in my Upstart .conf file, it does not do this: ...
0
votes
1answer
45 views

Can ping in Only one Direction within VLAN using tagged and untagged ports

The following setup: Two linux hosts s=server, c=client One switch which is fully VLAN capable Tagged port setting and tagging enabled on the server/switch side Untagged everything on the client ...
1
vote
1answer
37 views

sssd one ldap server for authentication and one for automounting, is this possible?

Says it all in the title really :) I am looking into SSSD but have a requirement that it must use ldap-1 for user authentication and then get the home directory automount information from ldap-2. ...
0
votes
1answer
28 views

Specify File-level FTP Permissions

I have a user that has access to an ftp folder: /home/user1/public_html/ Is it possible to deny access to specific files within this folder, while still allowing apache to run them? For ...
0
votes
1answer
32 views

Allow access to vpn users in certain directory

My users connect to a vpn network and i want to offer them a webservice, but limiting the access only through their vpn ips. I got this so far # ALLOW USER BY IP <Limit GET POST> order ...