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

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1answer
17 views

system halt twice a week

My system stop responding almost twice a week. following message is found in log, Apr 27 04:44:37 Helpdesk shutdown[29686]: shutting down for system halt Apr 27 04:44:39 Helpdesk modclusterd: ...
-1
votes
1answer
14 views

Wake on Lan - Install a client on a Linux machine

this might seem obvious or stupid to somebody, but I can't find anything that helps me yet, besides the fact that I'm not a Linux user. I've got 2 NAS boxes (Iomega, now Lenovo) IX4-200D and ...
20
votes
12answers
36k views

VMware Linux Server — how can you tell if you are a vm or real hardware?

An interesting question. I have logged into a Linux (most likely SuSE) host. Is there some way that I can tell programmatically that I am a VM host or not? Also assume that the vmtools are not ...
-1
votes
0answers
9 views

Discover webserver on a network

I am building a small linux box, which will be running a webserver only. The purpose of this little machine is to be put into a small, temporary network at a temporary location with no access to the ...
7
votes
2answers
495 views

Processes hanging indefinitely when reading from network connections

An update to the below: I have experienced a similar problem on an unrelated script, on a Debian virtual machine in a different datacentre. This looks suspiciously like the issue described here (and ...
5
votes
4answers
3k views

Openvpn, forward packets very slowly

I rebooted my server, and an odd issue just came out. I am running on ArchLinux, the clients are Ubuntu, Android and Mac. The problem is that accessing the internet via the clients is slow, about ...
1
vote
1answer
16 views

postfix/dovecot says “postmaster_address setting not given” but it is

I'm trying to configure postfix and dovecot to work together with virtual domains stored in MySQL, but I keep running into this whenever mail is passed from postfix to dovecot. Apr 26 11:54:40 smtp ...
3
votes
1answer
106 views

What is a core, and will purchasing more cores for my VPS speed up page load times?

I recently purchased a premium WordPres plugin called Hide my WP. I planned on using this plugin for my nonprofit organization's website, which is a multisite WordPress installation with an SSL. ...
2
votes
1answer
19 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 ...
1
vote
1answer
22 views

How to add a harddisk back in raid10 array?

I have a harddisk that is out of raid array. I wanted to create the partition table on sda basesd on the sdb table and I issued this command: sfdisk -d /dev/sda | sfdisk /dev/sdb --force I know ...
13
votes
11answers
15k views

How to monitor and log the memory/cpu usage of processes over time? [on hold]

I am looking for a way to diagnose issues, such as swap death, where a balooning memory process fills up swap and kills the whole machine (such as apache). I'm already using cacti and I can set up ...
0
votes
0answers
15 views

Linux how to map the auth logs?

I saw a picture a while ago that someone took everything from his auth log and made a map of login attemps. Is there software to do this? Please note i'm only using a terminal.
1
vote
1answer
39 views

process group A default route tun0, B default route tun1, etc

I have a Linux box with N tunnel interfaces, tun0, tun1, and so on. I want to set things up so that a particular group of processes, A, has its default (and only) route pointed at tun0. Meanwhile, a ...
0
votes
0answers
127 views
+100

Linux kernel bug w/ netns and/or Xen guest - “unregister_netdevice: waiting for lo to become free”

I am running a web crawler in a Xen-based VM (on Linode); it makes heavy use of network namespaces to control use of VPNs on a per-crawl-process basis. It's been running mostly continuously for the ...
14
votes
6answers
35k views

How can I list my open ports on Debian?

What is the command to display a list of open ports on a Debian server? I tried netstat -a | egrep 'Proto|LISTEN' but I would like something more specific that actually lists the port number.
0
votes
0answers
6 views

Kerberos transitive trust and Auth to local

I need to connect users belonging to a realm to services that resides to another realm. These two realms are not trusted together, but realm A (where users are) is trusted by realm B. This one is ...
1
vote
0answers
18 views

How to configure HHVM with Nginx compiled from source?

I installed Nginx 1.8 (compiled from source) on Debian 7: cd /opt/ sudo wget http://nginx.org/download/nginx-1.8.0.tar.gz sudo wget http://labs.frickle.com/files/ngx_cache_purge-2.3.tar.gz sudo tar ...
0
votes
2answers
955 views

Unable to change ownership of authorized_keys - Operation not permitted

I am following these steps in setting up a public/private key set on my server: Modify the permissions on the public key by entering the following commands, one by one, on your Linode. Replace ...
0
votes
3answers
57 views

Assign IPs to programs/processes

I need to assign different IP addresses to different processes (mostly PHP & Ruby programs) running on my Linux server. They will be making queries to various servers, including the situation ...
5
votes
1answer
2k views

Varnish “FetchError no backend connection” error

Varnishlog: 0 CLI - Rd ping 0 CLI - Wr 200 19 PONG 1340829925 1.0 12 SessionOpen c 79.124.74.11 3063 :80 12 SessionClose c EOF 12 StatSess c 79.124.74.11 3063 ...
7
votes
4answers
4k views

How do I setup Apache with FastCGI and Ruby?

I've been reading alot of forum posts, tutorials, etc., about setting up apache under linux with fastcgi. I'm trying to run fcgi for some of my ruby development (not rails), but I figure it should ...
1
vote
1answer
863 views

Ubuntu iptables logs not going to any log file

I am trying to put logs in iptables but I can not find any log in any file. Although when I run dmesg command, I can see the iptables entries. But the same entry doesn't go to any log file. Here is ...
-5
votes
0answers
31 views

Mail issues on server/website [on hold]

A website on a VPS is sending emails using a @example.example.org (note the extra example) and getting stuck in spam/trash even though we have and the correct filters in our domain manager. I'm ...
2
votes
2answers
884 views

How to set umask for php-fpm in fedora 19

I cannot find where to set umask (to set proper permissions to files created by php scripts) in Fedora 19. (specifically, I want new files to have the permissions 664)
1
vote
1answer
569 views

What is the systemd equivalent of ntsysv?

Now that RHEL 7 uses systemd the ntsysv tool only shows some of the services on my system. Is there a systemd equivalent to ntsysv whch will allow me to show/configure all services on my system? I ...
0
votes
0answers
11 views

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 ...
1
vote
2answers
36 views

auditd execve arguments that looks like encoded data

I'm logging all execve's in a sort of honey pot box and as such I try to make sense of the commands. There's many many of these, all with 'bash -c' and some long alpha numerical value not enclosed in ...
2
votes
1answer
5k views

How do you configure X11 forwarding over SSH on AIX?

Here is what I've tried. I've edited /etc/ssh/sshd_config on the remote AIX system X11Forwarding yes X11DisplayOffset 10 X11UseLocalhost yes as well as set $DISPLAY DISPLAY=localhost:10.0 export ...
1
vote
1answer
2k views

Error while bringing up eth1

I'm getting this error while bringing up my network card: (process:2550): WARNING **: _nm_object_get_property: Error getting 'State' for /org/freedesktop/NetworkManager/ActiveConnection/3: (19) ...
4
votes
2answers
940 views

Mounting NFS3 using Kerberos and AD

I've got a Linux server (Centos 5.6) that needs to automount home directories from a Windows (Server 2008) NFS share using Kerberos. The share mounts (with the nobody user and group) if authentication ...
1
vote
3answers
233 views

How to store the keystrokes of clients (Windows Xp) on a linux server (RHEL 5)?

How to store the keystrokes of clients (Windows Xp) on a linux server (RHEL 5)? I want to monitor my employees every action in office at working time, Keystroke Recorder Application Activity ...
0
votes
3answers
2k views

Debian install netbeans - “No protocol specified”

When trying to run the netbeans shell installer, it gives me an error. ./netbeans-7.0.1-m1-php-linux.sh Configuring the installer... Searching for JVM on the system... Extracting installation data... ...
0
votes
0answers
23 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 ...
0
votes
3answers
29 views

Same device, mount different partitions in different servers

I have two Linux servers which have connection to the same disk device, on a fiber channel connection (I didn't configure that, it was already there). I can see on both servers the disk showing up as ...
0
votes
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 ...
0
votes
2answers
27 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?
0
votes
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 ...
1
vote
1answer
944 views

WMI: wmic linux agent query error: NTSTATUS: NT_STATUS_ACCESS_DENIED

Myself new to wmic and keep trying for a long time with default agent query approach. wmic is linux based WMI tool to talk to windows WMI agent. While trying to fetch data with wmic from nt(win7 with ...
-4
votes
0answers
24 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 ...
-1
votes
1answer
26 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 ...
0
votes
2answers
901 views

Server, Database or Code Issue? Magento backend rewrites itself with a index.php which doesnt work

I will be honest and admit my cross posting in magento.stackexchange.com but the reason is that I believe it is a server fault, and now I am looking for proof to present to my dreaded hosting ...
123
votes
4answers
38k views

LVM dangers and caveats

I have recently started using LVM on some servers for hard drives larger than 1 TB. They're useful, expandable and quite easy to install. However, I could not find any data about the dangers and ...
3
votes
12answers
12k views

How do I kill processes older than “t”?

First, yes I have seen this question: http://serverfault.com/q/71360/14428 The answers there are incorrect and do not work. I have voted and commented accordingly. The processes I want to kill look ...
0
votes
5answers
2k views

nginx: php-fastcgi running but php files not executing

I have recently set up a nginx server with PHP running as FastCGI process. The server is running with HTML files however PHP files are downloading instead of displaying and PHP code is not processed. ...
-1
votes
1answer
33 views

setup domain with random ip addresses [on hold]

i set up nameservers as follows ns1.domain.com ip1 ns2.domain.com ip1 ns3.domain.com ip2 ns4.domain.com ip2 ns5.domain.com ip3 ns6.domain.com ip3 all dns records and PTR records correctly has been ...
0
votes
0answers
21 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 ...
0
votes
1answer
2k views

RHEL 6.6: [Errno 14] PYCURL ERROR 22 - “The requested URL returned error: 403 Forbidden”

First of all, it's the first time I setup RHEL machines, I'm more used to Debian. We're installing many machine at the same time. We've upgraded from RHEL 6.3 to RHEL 6.6 and we're now trying to ...
2
votes
1answer
259 views

Can't SSH in to AWS VPC second ENI from with in same VPC

I attached a Second ENI to my Ubuntu OS machine on AWS VPC, the internal IP of this new ENI is 192.168.12.24. When I try to SSH in to this machine from another machine in the same VPC I get a ...
0
votes
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 ...
5
votes
3answers
4k views

How do you test iptables rules to prevent remote lockout and check matches?

As I'm learning about iptables I've made a couple of mistakes and locked myself out. What method(s) do you use to test rules without locking yourself out? I'm using ubuntu server 12.04 LTS All ...