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

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overlayfs: remount doesn't change parameters

I'm trying to mount -o remount an overlayfs in order to change to an updated lowerdir: $ mount -t overlay ovl /mnt -oworkdir=/.work -oupperdir=/upper -olowerdir=/lower $ mount -t overlay ovl /mnt ...
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1answer
14 views

How to recover Symantec Backup Exec backup via Linux?

I have a tape backup from a defunct server that was created via Symantec Backup Exec version 10.1.5629 on Windows. Is it possible to extract the backup from this using some standard or open source ...
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21 views

Route Traffic For Specific IP Range Through Specific Network Interface

On Ubuntu 14.04. I need to route the traffic to specific IP ranges though a specific interface. route -n Kernel IP routing table Destination Gateway Genmask Flags Metric Ref ...
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0answers
6 views

Linux Mint system clock is days ahead after an overnight laptop suspend [migrated]

I'm a long-time Ubuntu user, who recently started trying out Linux Mint on a laptop. This is not a dual-boot setup, Mint is the only OS on the machine. When I suspend the laptop (i.e. close the ...
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0answers
22 views

Using Export in Mac OS X [on hold]

I am a developer using Linux on Mac OS X. I am building an app using MONO. I can run my app if I first run export MONO_MANAGED_WATCHER=disabled on the command line. My problem is, I have to run this ...
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0answers
25 views

SNMP agent configuration windows/linux [migrated]

i need to retrieve information via snmp and then use this information to create some sort of graphic application in Unity. I find the SnmpSharp library http://www.snmpsharpnet.com/ i create a little ...
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0answers
13 views

WebApp won't compile in CentOS 7 server, but does compile in Windows

I am getting a "resource marked as read-only" error when I try to compile a war file on a CentOS 7 installation. But the same eclipse project does not throw any compilation error on Windows after I ...
1
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1answer
11 views

Nginx alias with trailing slashes

I have a sub-site working under a parent website like this: http://example.org/sub-site (http://example.org/sub-site/ works too) Everything seemed to work well, including : ./sub-site/sub-section ...
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1answer
24 views

Linux - Print specific line from output [on hold]

I am used to working with single line output and can use $1 $4 $8 to specify certain items in that line, but I have never worked with multiple line outputs and would like to just print one line ...
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2answers
25 views

How to change the group, excluding a directory

We are using AWS S3 Buckets, and when you attempt to do a recursive chgrp, it churns on the S3 bucket (essentially) indefinitely. Is it possible to execute chgrp while excluding a directory?
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26 views

Puppet or chef script to set up an Ubuntu server [on hold]

Are there any Puppet/Chef/Other scripts to automatically set up and configure Ubuntu 14.04 with everything needed to host a website securely? I have looked on Github, but nothing seems very popular ...
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1answer
24 views

Shrinking LVM Volumes

We have a Synology RS3614rpxs NAS head containing (9) 3TB hard drives in a RAID 6 + 1 hot spare. The storage became exhausted and we added an expansion chassis where 5TB hard drivers were installed ...
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10 views

What is the windows server HW platfom (24 cpu, 2.3ghz server-2 core ) equivalent to Linux VM? [duplicate]

Wanted to migrate Windows Server HW to Linux NM Server. Windows HW 96G RAM 2.3ghz, 2core 24 CPU Hyper threading is enabled What is the equivalent HW requirement for ...
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1answer
20 views

AWS Ubuntu 14 - Can't SSH After Reboot

Had an issue where an instance became unresponsive and was forced into a reboot. After the reboot I could ping the server but could not SSH into the server. Ultimately I created a new instance and ...
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0answers
32 views

Update version of network manager

In shell on sever I see following error after launching several commands: Error: nmcli (1.0.0) and NetworkManager (0.9.9.1) versions don't match. Force execution using --nocheck, but the results are ...
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14 views

Auditing user commands with ip address

i have to set auditing system to my firm's server. Server runs Debian Wheezy. I'm working on "auditd" system on server. I have only two rule. # Log any command run on this system -a exit,always ...
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0answers
17 views

Cross-platform filesystem watcher, running in VM watching host?

Can anybody suggest a way to copy data from a VM's host to the VM[0] in way that is cross-platform across hosts (i.e. Windows, Mac or Linux)? Right now, I'm achieving this by running rsync in the VM ...
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votes
1answer
19 views

<service-name> dead but pid file exists [on hold]

A service has crashed on my server and when I do service <service-name> status I get dead but pid file exists, then if I try to stop the service I get Shutdown <service-name>: bash: ...
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0answers
4 views

libexecdir in systemd .service file?

I'm deploying something to machines (internally, not for public consumption) using RPMs. Now, in RPM .spec files there's the %_libexecdir variable. The package deploys a service binary in that ...
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0answers
10 views

SFTP chroot jail not working

Trying to follow this tutorial but for Arch Linux. /etc/ssh/sshd_config: # override default of no subsystems #Subsystem sftp /usr/lib/ssh/sftp-server Subsystem sftp internal-sftp ...
3
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0answers
37 views

Is it possible to ssh or rsync into a system whose file-system has remounted itself read-only?

I need to login to a system that went into a read-only state. I can ping it just fine but I can't ssh in anymore. Is there some special command line flag/parameter I can pass ssh that lets me login ...
0
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1answer
23 views

Monitor WiFi association attempts

I'm using hostapd to create an access point and I was wondering if there's any way for me to get an output of current or recent association attempts. Ideally I'd like to see the MAC ID and any other ...
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1answer
20 views

Why does Apache need o+x permissions for a Virtual Host running under suEXEC?

Running Apache 2.4.10 on Arch Linux. I'm trying to restrict an SFTP user to only be able to access his home directory, a public folder under a vhost directory, without being able to access that vhost ...
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1answer
12 views

screen -r and screen -list only show last screen

My problem is pretty much as the title describes it. I am running ssh session and on my server I screen for multitasking. My issue here is that I have at least 4 screens open and detached, but screen ...
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11 views

Linux client for pki certificate auto enrollment from Windows CA

I just set up a Windows Server Certificate Authority. I would like to auto-enroll Ubuntu Linux computers for certificates. Can anyone share the available client options? I found this (old) technet ...
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0answers
17 views

Are there any step by step tutorials to install django, mod_wsgi on redhat 7? [on hold]

I cannot find any tutorials for installing a complete django environment on Redhat 7. Specifically I am having problems with installing: mod_wsgi Is there a reason that there is nothing on the ...
4
votes
2answers
53 views

Samsung 850 EVO + HP P410 limited iops?

I´m experiencing a weird write iops limitation with a HP P410 256mb cache controller and 4x consumer grade ssd´s (Samsung EVO 850) in RAID5/10. After upgrade to latest firmware (6.64) for HP P410 ...
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1answer
25 views

openldap SSL/TLS Cert: Get a 'real' one or use Self Signed?

I'm setting up SSL/TLS on OpenLDAP and wondering why the Debian Handbook has the user create a self-signed cert? Wouldn't one signed by a 'real' CA be more secure?
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10 views

Allow guest read/write access to Netatalk AFP share

I am running Netatalk 3.14dev on Ubuntu 14.04. This box is being used as a webserver and we already have a Samba share pointed at the /var/www folder to allow our developers to work on sites hosted on ...
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0answers
37 views

Linux - Use in the IT sector [on hold]

I'm interested in networking rather than programming. I would like to know how Linux is used in the IT industry as a networking tool.
1
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2answers
32 views

Connect multiple times to the same wifi network [on hold]

Is it possible to connect multiple times (with different MAC addresses) to the same wifi network with just one network card? Is there already a tool to do this?
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14 views

policy based routing on multiple interfaces and default route

I have a server with multiple interfaces connected to different networks. I have eth2 wih ip (10.1.1.1). I have the following routing set: # ip rule list 0: from all lookup local 32765: ...
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2answers
33 views

building a SIEM, should I send logs or get them from the gathering machine?

I am working in a Linux environment, I would like to gather all the logs from the machine pool on a unique machine X. There are several log files I need to move and I am not sure about the way I ...
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0answers
26 views

Ansible 'include' statements and autopath

My ansible's 'include' statement was working fine, but recently after including ymls in subfolder, it somehow brokes the role's path. Here's the tree of my role: . ├── site.yml ├── inventory.ini ...
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0answers
16 views

why does having ~/.ssh/id_rsa.pub cause GUI dialog asking for SSH password even though SSH_ASKPASS is empty?

How the problem started For some reason I did not have my id_rsa.pub file in ~/.ssh. So I copied it off one of my servers to ~/.ssh/ on my machine... so that I have it, so I can copy it to servers ...
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0answers
30 views

Is this routing configuration possible

I have three interfaces, which mostly will be used for receiving data, and many other interfaces, which mostly be used to send data. Also, frames from first three interfaces should be vlan tagged and ...
0
votes
1answer
20 views

Prevent init to restart services when changing run-level

When a service, most notably httpd is configured to run in level 3 and 5 (on CentOS 6.5) and the current run-level is 3 and I move to 5 by init 5, then init restarts httpd which is silly IMHO. Is ...
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0answers
28 views

Process killed with -9 for not apparent reason

I have a process (JVM) on a Linux (RHEL) machine that is getting killed for no apparent reason. This has happened twice in the past couple of days. The JVM prints the following before it dies: ...
0
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1answer
24 views

Postfix block internal communications

I'd like to know how to block my users to send mail to each other but give them chance to send and receive external mail. john@localdomain.com <---> julie@localdomain.com REJECT ...
1
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3answers
44 views

Resize RAID partition with GPT partition layout, without LVM

OK so I am a freelance sysadmin. I was asked to resize root partion (/) because it was 20Gb and /home was 3Tb. What I wasn't told is that the server is using RAID and GPT, so I can't use fdisk but ...
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3answers
62 views

Best way to disable swap in linux

I am running a custom compiled 3.18.9 kernel and I am wondering about the best way to disable swap on the system. I also use init if it makes a difference. Is it enough to comment or remove the swap ...
1
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0answers
30 views

2NIC's with 2 Gateways [on hold]

I have this setup: 6 machines with 2 NICs each each machine has one NIC connected to 192.168.1.0/24 through a hub. One of the machines is the gateway (192.168.1.13) which has NAT and masquerading ...
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votes
1answer
36 views

How I do to run only a software in more than one computer? [on hold]

I need to run a unique instance of a software in more than one computer, how I do this without a centralizer server? For example: 4 computers interconnected by the local network, 2 of then has "the ...
0
votes
0answers
16 views

KVM port-forwarding from ppp0 to VM's bridged NIC not working, but to VM's NAT NIC works?

I've spent a lot of time on this freaky problem, I've created a simple host and VM configuration to try isolate the problem. Terminology in this question Host: The bare metal server VM: The KVM ...
0
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1answer
23 views

Cannot start apache after reboot on dedicated server

I have some websites running on a dedicated server. One of them it's written in CodeIgniter by me and has wordpress integrated. Tonight, this sequence of events happened: Due to my mistake, ...
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0answers
11 views

How can I find out which disks are pairs in an Areca 1680 RAID 1+0 raid set?

After having seen some non-fatal SMART reading errors on multiple disks of an RAID 1+0 on an Areca 1680 RAID controller, I'd like to check if there are disks with reading errors which are in the same ...
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1answer
23 views

How can i detect if the virtual CD ROM is attached or detached?

I have a requirement where i need to check if a virtual CD ROM is attached if yes then read the values and apply it on to the application. But couldn't find a way to detect if a CD ROM is attached or ...
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0answers
17 views

How can I store systemd-cgtop output in a text file

I want to store the result of system-cgtop in a txt file for 5 iterations. I am aware of the batch mode and I tried to do it with the following command: systemd-cgtop -b -n 5 >> result.txt ...
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1answer
35 views

How to config Nginx runs php on sub directories?

I have 2 versions of portfolio website for 2 languages. I put them in 2 dir in the same root dir. /root/ |----vi/ |----en/ |----index.php Then I config nginx as below: server { ...
-1
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1answer
19 views

amazon ec2 linux redhat server install unar package

I'm just trying to install unar package for the purpose of uncompress compressed files. What I've tried is sudo yum install unar But it shows "No package unar available". I googled and downloaded ...