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

learn more… | top users | synonyms (1)

0
votes
0answers
7 views

Turn off output/force DPMS on unloaded GPU without driver

I'm running a KVM VGA Passthrough VM on my desktop, passing it my dedicated GPU. This VM does not automatically start as I don't always need it. When the VM isn't running, my desktop doesn't touch the ...
0
votes
0answers
10 views

Cleaning Nginx access log files - removing user agents used for testing [on hold]

I've done quite a bit of performance testing on my Amazon Linux production server, across half a dozen sites. As a result I have dozens of log files, some gzip'd, with tens of thousands of hits that ...
0
votes
0answers
4 views

Centos 6 ssd mtip32xx driver command(s) timed out: tagmap

We have some servers with Centos 6 with "Micron Technology Inc RealSSD P320h" ssd drives. We have noticed in the kernel log Feb 11 09:47:32 hostname kernel: mtip32xx 0000:47:00.0: 1 command(s) timed ...
0
votes
1answer
11 views

How do I reconfigure my disk array on a Dell machine under Linux?

I have a Dell R620 with a PERC RAID controller (lspci shows "RAID bus controller: LSI Logic / Symbios Logic MegaRAID SAS 2108 [Liberator] (rev 05)"). I had placed a single disk in it, made it a ...
1
vote
0answers
9 views

Installing VirtIO SCSI on Windows Guest fails

I'm running Windows 10 as guest via KVM / qemu. Unfortunately, Windows doesn't recognize the fedora virtio drivers I want to install for better HDD perfomance. The driver itself does show up, but ...
0
votes
1answer
6 views

chef common recipe multiple roles

i have created a mongodb chef recipe, and i am overriding the default attributes on the recipe from the role. name 'mongo_datanode_jackey' description 'this module is currently under testing...' ...
2
votes
1answer
24 views

Why do we use a OS Base Image with Docker if containers have no Guest OS?

I've just started to study Docker and there's something that's being quite confusing for me. As I've read on Docker's website a container is different from a virtual machine. As I understood a ...
-2
votes
0answers
9 views

There is a requirement from my boss to prepare a cluster of our application on wildfly application server

There is a requirement from my boss to prepare a cluster of our application on wildfly application server. I have designed the architecture as two haproxy(for loadbalancing),two apache servers for ...
0
votes
0answers
3 views

IIS front end of jboss

I wanted to know is it possible to place IIS 8 in front of two jboss 5 nodes hosting on Linux.Two jboss nodes are ruuning in cluster on two different machines.Is it possible for IIS to load balance ...
0
votes
0answers
19 views

Postfix not forwarding emails, but sends them from command line

I did have postfix working a few months back, then for some reason it stopped working. I only want forwarding emails, not mailboxes. I've setup forwarding using the virtual file, and configuring ...
0
votes
0answers
15 views

Xen reduce VCPU

I am trying to reduce the number of VCPU on Dom0, but not understanding why its not reducing the number. Log: [2016-02-11 13:43:25 2550] INFO (XendDomainInfo:1977) Set VCPU count on domain Domain-0 ...
0
votes
0answers
4 views

Is there any library for MSMQ which can be run on linux server? [on hold]

Is there any open-source or simliar open licence library for MSMQ for languages like java/python/php which can be run in Linux environment?
1
vote
0answers
18 views

How to setup VPN between multiple servers (using strongSwan)?

Scenario Here I have some servers running an application. I wish to setup a network between them so that: Each server could act as a gateway to other servers (and provide service to a client even ...
0
votes
0answers
9 views

Is IP range or vLAN traffic mirroring possible with Linux?

I am dealing with a network monitoring issue in a medium size hosting platform (10 Gb). Some of the network devices can only do 1-2 SPAN ports. In order to get some more flexibility I'd like to use a ...
0
votes
1answer
19 views

Performing DNS queries starting with one of the root servers using dig command [on hold]

I am having trouble understanding the question for my network assignment. The question states: Discover the sequence of DNS servers your local DNS server with empty cache goes through when it ...
-1
votes
0answers
12 views

How do I forward/NAT all traffic to one interface to give internet acess for clients in ap? [on hold]

Im trying to setup a router in my debian vbox virtual machine using an usb wireless adapter in at0,and a bridged adpater in eth0,i'm using airbase-ng and isc-dhcp for leasing ips,the point is all ...
-1
votes
0answers
17 views

Could a missing library be causing this message to appear? [on hold]

I recently tried to run a certain function from a program (it's pre-compiled and I don't have access to the source for it) and was met with this message: Could this possibly indicate that a library ...
0
votes
1answer
27 views

Captive portal and SSL

I think similar questions have already been asked over and over, but my question is slightly different. I understand I can't redirect HTTPS traffic to the Captive Portal landing page without causing ...
-1
votes
0answers
17 views

Site images lost/cropped, was this an attack, looking for clues [duplicate]

I am still putting things together to get this sorted, so apologies if I fall short on details. I am looking for your help to identify what actually happened. I take care of an eCommerce shop. ...
0
votes
0answers
20 views

Forward all traffic when connected to a hub

I have a Ubuntu with two NICs. eth0 is connected to a hub and eth1 is connected to Internet. eth1 is used to do a point to point VPN using openVPN. So I have a tun0 interface. the VPN tunnel endpoints ...
0
votes
0answers
25 views

Why do I get a list of root name servers when doing an nslookup to one nameserver and not another

I have two bind9 servers, ns1 and ns2 I have a test domain called test.test whos apex is 1.3.3.7 When I nslookup ns1 (master) I get: nslookup test.test ns1.domain.com (root) nameserver = ...
15
votes
2answers
3k views

Very strange file size (more than 600 PB) on a small filesystem

I had a file on an XFS filesystem which size was about 200 GB. It was a QCOW2 image containing a virtual disk of a KVM-driven virtual machine. Something went wrong (maybe it was some glitch of ...
0
votes
4answers
54 views

Internal DNS for internet access

I have configured a internal DNS for my office network using BIND on CentOS6 ... The problem I am having that when I use that DNS server as a primary DNS my entire network loses internet connectivity ...
0
votes
0answers
9 views

My Server trying to find known vulnerabilities in other server [duplicate]

I got mail "Abuse message" Greetings, We have detected abuse from the IP address MYIP.XX.XX.XX, which according to a whois lookup is on your network. It seams to be trying to find ...
1
vote
0answers
42 views

IBM System x3850 M2 Ubuntu Server Install

I just purchased two second-hand IBM System x3850 M2 rack servers, and I am a real noob to the subject. As such, I cannot tell if there is a major difference between x3850 M2 and x3850 X5. If there ...
0
votes
1answer
11 views

is there a way to pretty print the output of “ps” to include the “rss” memory value?

I have a python script which takes in processes in csv format and decides things based on what's running, it's name, and how much cpu time it's using. I would like to add processes that also use lots ...
-1
votes
0answers
12 views

RHEL 7 lock screen freezes [on hold]

I've just installed RHEL 7 into hyper-V for some testing of a linux application. To my dismay, I find that the console freezes up when the desktop locks. I can Alt-F2 to get a tty, then gdm-restart. ...
2
votes
1answer
17 views

Linux showing wrong disk space used, du -h -x / | sort -hr has different space

If I type: df -h It shows me 12G used. But If I use this command: du -h -x / | sort -hr >> /home/log_size.txt This will give me: If I sum /usr + /var + /root, this won't give me ...
-1
votes
0answers
4 views

samba full audit: meaning parameters

I have set full audit in samba, but there are some parameters that would like to know exactly what they mean Full audit full_audit:prefix = %I|%m|%S full_audit:success = mkdir rmdir pread read ...
1
vote
0answers
25 views

Permissions denied to directory owned by a user

I have a similar problem to that posted here, in that a user is unable to access the contents of a directory they own. A quick search shows quite a few other similar questions, however the problem ...
0
votes
0answers
24 views

In a virtual lab environment, I have a pxe server timing out

I've built a pxe server using CentOS 7. The client times out with a message of: Connection timed out (http://ipxe.org/4c126035) When I look at that link, it says 528 rc = -ETIMEDOUT;, but ...
2
votes
2answers
181 views

How to keep access keys safe in the event of a compromised server?

What's the best strategy to keeping access tokens secure in the event of a compromised server? Let's say I have a Linux web server to which I regularly ssh into. There is a variety of critical access ...
0
votes
0answers
4 views

How to programmatically change a password on an IPSwitch server using a Linux client? [migrated]

One of my companies customers runs an IPSwitch sftp server, and they have disallowed public key authentication, and require us to change our password every 90 days. The problem is that, I cannot see ...
0
votes
0answers
16 views

Gluster for replication/propagation

Say I have a bunch of servers that access a gluster mount to serve files via http. Files are sourced internally, and are copied from an internal server to the gluster mount on one of the download ...
2
votes
1answer
11 views

Adding trusted root certificates to the server cent os

I m trying to install a root certificate in my cent OS box. I did the following Enable the dynamic CA configuration feature: update-ca-trust force-enable Add it as a new file to ...
0
votes
0answers
9 views

Munin graphs not being removed from html page after plugin removed

I have a munin server and many linux nodes. That all works fine. I wrote some custom munin plugins. They worked. They appeared on the munin html page. I have since deleted those plugins. However my ...
-1
votes
0answers
23 views

FTP Server - Prevent Uploading Files Named with Certain Characters [on hold]

Is there a way in FTP to prevent clients from uploading files named with certain characters? or to accept only files named with specific characters? Example: accepted file name should only contain ...
0
votes
0answers
21 views

ThinkServer x3550 M3: AES-NI disabled?

We are running a x3550 M3 with Ubuntu and we wanted to enable AES-NI functionality. First, we checked whether it was enabled already by executing: # grep aes /proc/cpuinfo However, no aes flags ...
1
vote
0answers
13 views

Migrate logcal linux users to FreeIPA ones

We have several Linux machine (running various versions of Fedora and CentOS, but that should not be relevant) with local users. Most of those local users are the same login name but might have ...
0
votes
1answer
22 views

How to remove injected code between two strings recursively in PHP files using SSH

We have in-house Linux(Ubuntu) development server. Few days ago suspicious code was injected. Just to mention here that we have more than 300 projects. Code is injected in almost every file ...
1
vote
1answer
24 views

passwordless ssh in VM - weird authorized keys file

I am trying to setup passwordless ssh to my localhost (itself). I have host machine PM1 and then I lauch a VM(vm1) using qemu-kvm and logged into VM. Then, I am trying to setup passworless ssh within ...
0
votes
0answers
9 views

conntrackd not syncing with external cache off

I have two firewall gateways that I want to work in active/active mode with conntrackd connection state syncing. Well, when I am using conntrackd with external cache on, connection created in one ...
0
votes
0answers
9 views

Linux at command logging [duplicate]

For Linux, specifically CentOS, is the command executed by 'at' logged anywhere? If so, in what file would the command be logged? I looked under /var/log.
2
votes
0answers
46 views

Allow ssh when g+w on user's home directory

Is it possible to allow one user to connect via SSH when that user's home directory is g+w? As I understand it, I can allow this if I set StrictModes no in /etc/ssh/sshd_config, but that would mean ...
0
votes
0answers
9 views

NAS JBOD2 2 Drive Raid 0 Enclosure Failure Data Recovery

I have a Caldigit Enclosure that had 2 2TB Sata Hard Drives in the unit. The Enclosure seems to have failed during a data recovery operation where the partition was lost during a power failure. I am ...
-3
votes
0answers
25 views

How to write access command with credentials? [on hold]

We had a third party company setup servers and built services for us years ago. But the relationship is strained now and basically they won't reply any email to us. We could find some legal help but ...
0
votes
1answer
23 views

How do I tell Nginx to pass requests to different apps based on the incoming url?

How do I tell Nginx to pass requests to different apps based on the incoming url? For example, mybudgetapp.com and myshoppingapp.com both point to my server where both apps (8001, 8002) and Nginx ...
1
vote
1answer
19 views

How do I view the contents of transport.db file in Postfix without the original transport file?

A Postfix server was given to me with a transport.db file, but no original transport file from which it was derived? How do I determine what the original contents of the transport file were?
1
vote
1answer
18 views

How to change the linux startup services order in SUSE 11

In RedHat and Centos changing the startup scripts as stated here worked perfectly fine. But Suse seems to follow different rules, if so what are the changes need to be taken into consideration? Do ...
2
votes
2answers
49 views

Linux: Allow user to execute specific command on behalf of any other user

I am trying to find a way to allow user john to execute a command (say echo) on behalf of another user peter without being prompted for password. I found a thread that I thought would be the answer ...