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
6 views

Redirect IP to a domain name using htaccess

Let's say I have this IP Address 11.12.13.14 and the domain example.com. Now what I want is to redirect the user from IP Address to domain name (but without changing the domain name to address bar). ...
1
vote
0answers
6 views

'BUG: unable to handle kernel NULL pointer dereference at' on Google Compute Engine

On a semi-regular basis, I've seen GCE instances freezing with the following error message (from the serial console): g[1375589.784755] BUG: unable to handle kernel NULL pointer dereference at ...
0
votes
0answers
12 views

LDAP Kerberos authentication on linux

I have configured my RHEL linux machine to be authenticated against active directory without being joining it to domain, using nss-pam-ldapd pam_ldap samba-winbind openldap-devel krb5-devel. I am able ...
-4
votes
0answers
16 views

Is it possible to turn PC into a router, so that I can send data to it? [on hold]

I would like to transfer data to my PC a bit quicker, than I am now ( which is sending it over wi-fi through the router ), but it would seem that both USB and Ethernet creators just hate easy ...
0
votes
0answers
10 views

DevOps: How do I keep my systems patched and secure? [on hold]

In my last company we had an operations department responsible for making sure our servers were always set up properly and securely. In my current company, there isn't budget to hire experts in that ...
0
votes
1answer
10 views

Apache POST data interim storage

I've been serching high and low and I cant seem to find it. When apache receives a POST / HTTP/1.1 with some data in the body field, is that data stored in memory or in a file? From what I've been ...
0
votes
1answer
10 views

iptables TEE UDP traffic to a different subnet

I'm looking for a way to replicate UDP traffic received by one host to another host in a different subnet. The TEE target in iptables only works with gateways in the same subnet, i.e.: On the ...
0
votes
0answers
12 views

Deploy a custom build Linux image to a number of phisical servers

I am working on a project where I need to build a number of Physical servers between now and December. The server base ISO will be Ubuntu 14.04 where a customisation for each other client need to be ...
0
votes
1answer
8 views

Our site using Akamai is returning 404 (from time to time)

We are facing an issue with sites hosted by Akamai. From time to time we can't load some websites from Akamai and the server return "404 not found". This is temporarily error and it could be that the ...
0
votes
0answers
9 views

proftpd ignores HideGroup

I have an interesting problem when hosting a proftpd on a SL6 x86_64. When I compile from source, proftpd executable ignores the HideGroup feature. However, when I install an older version from epel ...
1
vote
1answer
19 views

Why ARP cache is not emptied as I except it to be?

I'm trying to empirically test the time an entry stays in the ARP cache table. This time seems to be defined by /proc/sys/net/ipv4/neigh/default/gc_stale_time file and by ...
0
votes
1answer
9 views

Debugging Nagios notification failure

I have spent the day setting up custom twitter notification on nagios. Everything seems to be in place and the notifications seems to be triggered but the script is not called. my contacts ...
0
votes
0answers
9 views

Cannot get current device settings: Operation not supported ethtool CentOS 7

Received an error "Cannot get current device settings: Operation not supported ethtool" while changing network speed using ethtool command on centos, # ethtool -s eth0 autoneg off speed 100 duplex ...
0
votes
1answer
10 views

Git fatal: unable to write new_index file

We are a web development company that is transitioning to Git. Eventually we intend to run it fully locally but at the moment we have development websites hosted on a Linux server, which is also ...
0
votes
2answers
25 views

Simplest way to secure debian server on LAN

I currently have a basic debian server setup and connected to my LAN. Am I right in thinking that if I remove the gateway from the network configuration then the box will be unable to communicate ...
0
votes
1answer
19 views

Route HTTP(S) traffic to specific IP based on requested URL on Linux

I have an Ubuntu Server in the cloud. Let's call it ServerA. ServerA has an apache2 installed and is serving a default page on HTTP requests. mydomain.com is pointing to the ServerA's IP and thus the ...
0
votes
1answer
39 views

log every command on linux server

I have a snoopy logger on my linux server. It works perfect, but when I use midnight commander I dont see commands that I made there. In logs only 'mc' and no functional keys. So is there any way to ...
0
votes
1answer
16 views

Recurring start of process in case process isn't started on Linux

I need to create an application that performs reconnect to WiFi and VPN from Ubuntu desktop if case any of these connections drop. I know there are numerous ways to do it via system settings and ...
0
votes
1answer
16 views

How to restore a saved partition table to another disk with parted

OS: Ubuntu 10.04 I have saved my partition layout from sda and want to restore it to my new disk sdb. I have used the following command to save the layout, but how can i restore it to my new disk ...
0
votes
0answers
10 views

Creating a custom .iso with kickstart CentOS 6.6 [on hold]

I downloaded the CentOS 6.6 minimal .iso file. I mounted it. Copied the necessary files to a new_work_dir. I added few extra custom packages to new_work_dir/Packages and ran createrepo -dpo .. . and ...
-1
votes
1answer
26 views

Recover sql database files without using sql server

My Ubuntu computer HD crashed, so I cant boot up anymore, I'm trying to recover my data from the hard drive by booting up using the live CD. I can access the crashed internal hard drive by mounting ...
2
votes
1answer
39 views

How to get local ip address associated with default gateway

There may be several network interfaces on a server, e.g., lo, eth0, eth1 From the route table, I know that eth0 is connected to the default gateway. The address of the default gateway, for example, ...
-1
votes
1answer
29 views

Bash add entry to fstab by script

I'm newbies in bash scripting and i try to write script that add entry for cifs windows share to fstab. I writed a litle script but i'm not shure if it will work fine. I haven't linux to test it Can ...
1
vote
0answers
35 views

Is it possible to run 2 concurrent tcpdump with different options?

I need to run 2 concurrent tcpdump commands with different arguments/options. Why ? Because we wrote some long long scripts compatible with following options : tcpdump -ixenbr0 -s 400 -n -A 'port sip ...
0
votes
0answers
17 views

Retrieving the AD machine account password on an Ubuntu machine

I'm trying to perform an LDAP query against Active Directory from a script (very similar to this question) from a domain-joined Ubuntu machine. The script can't prompt for a password, as it won't be ...
0
votes
2answers
32 views

how to ssh from a vm to another vm that is on a different host

I have 2 CentOS computer in the same local area network. Both computers have their own virtual machines running CentOS. I would like to ssh from the virtual machine of 1 host to the virtual machine of ...
0
votes
0answers
4 views

Can I create a virtualbox server that manages all lan traffic and only when running? [migrated]

I'm running a Windows 7 host and a Linux Mint guest vm in Virtualbox using a bridged adapter. I have multiple web sites set up in the guest os. Currently, I can only access the page at var/www/html ...
0
votes
1answer
27 views

Varnish GeoIP (vmod_geoip) + Amazon Linux

I'm trying to install vmod_geoip via amazon linux, but so far no luck. I've installed geoip geoip-devel. I've downloaded the vmod_geoip source. I'm able to ./autogen.sh but ./configure constantly ...
0
votes
1answer
23 views

date and hwclock not in sync - why

I am in GMT+8 Singapore [root@SJOAM ~]# hwclock -r Thu 30 Jul 2015 02:10:14 AM SGT -0.469446 seconds [root@SJOAM ~]# date Thu Jul 30 10:11:28 SGT 2015 [root@SJOAM ~]# cat /etc/sysconfig/clock # ...
0
votes
1answer
20 views

Upgrading XenServer 6.2 to 6.5 or updating in general

Trying to get my XenServer to update, and want to upgrade it also to version 6.5. But cant figur out how. When i try to update using the XenCenter, i cant select the server itselfe when i get to that ...
0
votes
0answers
20 views

Centos. infiniband multicast join failed for status -22

I have a cluster with Linux Centos 6.5 as OS. All the machines are connected by infiniband, the network is working fine but in the /var/log/messages of all the machines I can see the following message ...
1
vote
1answer
16 views

Checking for disk failures and issues in a VM

If you host with a provider who runs a RAID 10 or another RAID based system and your in a VM. Are you able to check for disk failures or RAID failures from within the VM or does it require host based ...
-2
votes
1answer
17 views

Can we increase RAM, CPU as per our requirements in AWS EC2?

Can we increase RAM, CPU as per our requirements in AWS EC2? Like customize increasing memory which is possible in vmware
0
votes
0answers
18 views

linux : allow other user to use installed application

In Linux Ubuntu 15.04, I have created 3 users. I have then installed an application, capifony, as one of them, svassaux. Now, I want to let another user, user2, run the capifony app and he gets : ...
0
votes
0answers
12 views

Apache Server Variables on VirtualHost

I've a question, I want to setup my Apache server to be able to serve my subdomains dynamically, to do so, I want to use only two "sites" config files (000-default.conf and default-ssl.conf). On the ...
0
votes
1answer
15 views

exim4 domains/users configuration on files or on db?

I am setting up a web server using Exim 4 on Debian 8 and, as usual, I was going to use MySQL as backend to store the settings related to the domains and users (like quota, emails, aliases, forwards, ...
2
votes
1answer
131 views

linux + at command + how to kill the job

I use the at command in order to run the task (test script ) every one min at -f /tmp/test now +1 minute commands will be executed using /bin/tcsh job 1438153690.a at Wed Jul 29 10:08:10 2015 ...
1
vote
1answer
16 views

cpufrequency scaling with debian 8.1 and Intel XEON E5-1650 v3

I want my server with debian 8.1 not to use cpu scaling but always run at the highest possible frequency. I have installed cpufrequtils $ dpkg -l | grep cpufreq ii cpufrequtils ...
0
votes
2answers
37 views

top command + how to verify iowait value for one hour

my target is to check iowait value that not higher than 50 from top command and if value is higher than 50 for more then one hour , then need to give alarm about this ( by script or other option ) ...
-2
votes
0answers
13 views

nginx http substitute module

I'm trying to figure out where ./configure is. The setup guide says run the below: Installation To install, get the source with subversion: git clone ...
0
votes
0answers
10 views

Install libcanberra-gtk3.x86_64 package in RHEL6 running gnome2 [on hold]

I am running RHEL6 on my workstation. I keep getting this error when I open gvim: Gtk-Message: Failed to load module "pk-gtk-module": libpk-gtk-module.so: cannot open shared object file: No such file ...
0
votes
0answers
16 views

Bind, IPV6, and Out of Zone Data

I am running into some problems getting bind properly configured to support IPV6 hosts. IPv4 is working fine, no issues. My zone file has both IP4 and IP6 data intermingled which I believe should ...
0
votes
0answers
25 views

Capture all mysql requests/responses and caculate the response time using tcpdump

I need to capture all mysql requests/responses using tcpdump and after that need to find out which response related to which request in order to caculate the response time of each request. I used the ...
8
votes
2answers
564 views

Troubleshooting a Redis Stall

We have several redis instances running on a server. There are also multiple web tier servers connecting to those instance that experience a stall at the same time. We had packet captures going at ...
-3
votes
0answers
20 views

I have Accidentally remove a non-system kloxo folder [on hold]

I have accidentally removed a non-system folder which is not a system folder but contained important data for me. I had set two domains on it. how can I recover those files/folders? Any help is really ...
0
votes
1answer
18 views

Is it possible to specify an answer file when PXE booting windows using memdisk?

I'm able to PXE boot windows from my Linux server using memdisk to mount a winpe.iso that: mounts two samba share drives, one for the windows install disk, and another that has answer files (each ...
0
votes
0answers
12 views

SELinux - Create custom Context [on hold]

I need to create custom selinux rules for some applications that are not already have selinux context, So How can i create custom SE-Linux types, users and roles in SE-Linux.
-1
votes
0answers
19 views

Force Linux to reload passwords [on hold]

I have a small cluster of Linux computers. To make administering them easier, they share via NFS the /home directory of the master computer, as well as the files that describe the usernames and ...
-2
votes
1answer
17 views

How to configure a zone transfer from a windows 2008 primary dns server to a CentOS secondary dns server

So my primary dns server is a windows machine and I would like to configure a zone transfer to a secondary dns server that runs CentOS. Both indivdual dns servers were tested and work on their own. ...
0
votes
1answer
13 views

PXELinux with WDS/DNS/DHCP

I've been reading up on setting up a PXELinux machine to run side by side with WDS on Windows and all the guides talk about setting up a DNS and DHCP server on the same server as the PXELinux. What ...