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

learn more… | top users | synonyms (3)

0
votes
1answer
18 views

Ubuntu 14.04 UWF for iptables

Can I still use the init.d iptables stop? It seems that init.d is replaced by systemd. Is that correct? The iptables is part of the kernel right and not a service. On redhat based systems it is a ...
-2
votes
1answer
46 views

One Public IP, Private IPs, DNS Server and Multiple Servers [on hold]

I have lots of unanswered questions about these topics. So, lets begin. First off all, I'm not a server and networking guru. I'm a regular PHP developer. And I've read allmost all of the articles ...
0
votes
0answers
16 views

error: Bad prime description in line

Aug 17 09:34:17 vps-aadsshd[130428]: error: Bad prime description in line 186 Aug 17 09:34:17 vps-aadsshd[130428]: error: Bad prime description in line 187 Aug 17 09:34:17 vps-aadsshd[130428]: error: ...
-2
votes
1answer
28 views

Crontab not working to send email [on hold]

I have CentOs 6.5 running on a VPS Host. I installed crontab and email using the below commands yum install vixie-cron service start crond chkconfig crond --levels 235 on yum install sendmail ...
-1
votes
2answers
27 views

Allow connection only from 2 ips [on hold]

I need to block all connection on port 30000. I alredy did that , with command like that iptables -I INPUT ! -s IP_HERE -p tcp --dport 30001 -j DROP but now i need 2 ips , how i could do that? ...
-2
votes
1answer
29 views

I lost my password to a linux remote machine is there any way I can get it back? [on hold]

I have my username and I used to log in using ssh. It was for a university course. Now that course is over but I need some files that I had stored in there.
-3
votes
0answers
9 views

web app to share images over the web [on hold]

I'm looking for a recommendation or idea about a web app solution that will run on Tomcat, Jetty or Apache on Linux or OS X and allow for sharing media, like images, and also functions like automated ...
1
vote
1answer
32 views

Unable to lock error message in SMTP Server

I've the following error message appeared 3 continuous for the same mailbox > (delivery failed to mailbox > /var/spool/postfix/vhosts/<user>/mail/inbox: > > unable to lock for ...
3
votes
1answer
44 views

screen in screen, detach only last one

I have strange issue on my hands. I have opened (GNU) screen for one serial console and in that same console I have opened another screen to another serial console. It was working but I am now ...
-2
votes
0answers
28 views

crontab error with (No MTA installed) but I use >/dev/null 2>&1 [duplicate]

I'm new on linux user I try to run crontab to backup my database with vagrant user * * * * * /usr/bin/mysqldump -h localhost -u root -p root mydb | gzip > /var/backup/all/database_`date ...
6
votes
0answers
145 views

Linux kernel 3.10.0-123.4.2 processes [flush] aren't present [migrated]

I am using CentOS 7 with "3.10.0-123.4.2.el7.x86_64" version, but I don't know why the kernel threads named flush aren't present in this kernel version. I tried to look in the kernel change log, but ...
-2
votes
1answer
20 views

Checking disk status (Behind raid card) from bash

We have a SuperMicro server with LSI Raid Controller. Is there a way to get any kind of information related to disks on raid controller ?
0
votes
0answers
27 views

How to fix speedometer display? [duplicate]

I am using CentOS 6.5 and I went to install speedometer and when I went to run speedometer the out put gives me squares I'm not sure sure how to get it to properly display I have installed all the ...
-1
votes
1answer
12 views

Can I add a comment to every IP in CPHulk Black/White List?

Is there a way to put a Commentary to every IP in Cphulk White List? Example: 190.222.x.x # MY Home 190.111.1.1 # My Office 190.180.1.1 # Customer A is this valid? Thank You
0
votes
2answers
28 views

Keepalived loses VIP upon power cycle of master

I have two servers running Keepalived 1.2.7 with hostnames left and right. Here are the configs: # keepalived.conf on left vrrp_instance VI_1 { state MASTER interface eth1 ...
0
votes
0answers
25 views

network inbound from other subnets refused to server A, Server A can go outbound to internal networks, but not internet

I have a RHEL 6 server with 4 NICs on 192.168.2.[30-33]/24 Set with DHCP reservations via infoblox, I have checked and the MACs all match up. ifconfig shows /24 for every netmask, and the routing ...
1
vote
1answer
19 views

ModEvasive Not Sending Email Alerts

I have installed ModEvasive on Ubuntu/Apache 14.04 server. Mod is working correctly and blocks DDOS attacks. But it doesn't trigger any email. I have correctly mentioned DOSEmailNotify in .conf file. ...
-1
votes
2answers
20 views

iostat reporting low r/s on first line for specific disk, expected r/s on all following lines for that same disk

When copying data from hard disk sdc to sda, I notice that the number of read requests completed per second was unusually low: $ iostat -x 1 1 Linux 3.13.0-32-generic (melancholy) 2014-08-15 ...
-2
votes
2answers
50 views

Centos Server Recently slowed down significantly

I have Dedicated Server on 1and1 with RAM - 16 GB HD 1000GB CPU: Intel(R) Xeon(R) CPU E3-1270 v3 @ 3.50GHz, 4 cores Centos 6 Apache/2.2.15 PHP 5.3.3 Mysql I have a video sharing website (on ...
1
vote
2answers
36 views

Cant find my harddrives in ubuntu installation?

I was trying to setup a Microserver with two 1TB harddrives as a software RAID. Somehow it didnt work and now ubuntu 14.04 is not starting. My problem is that I dont see the drives anymore when I go ...
1
vote
1answer
15 views

Upload files from vsftpd ftp client in /tmp and once they are uploaded, move them to original folder

I'm having issues with my application. The scenario is that, there is a php cron which is running every 1 minute and it processes the uploads folder, wherein, files are uploaded via ftp ...
1
vote
1answer
27 views

Wrong keyboard layout with HP RAC and KVM Viewer

I am currently working with a ProLiant N54L Microserver and a HP Remote Access Card. I access the server through my Mabook with a German keyboard layout. On installing Ubuntu, the installation cant ...
-1
votes
1answer
24 views

Can you use CGroups inside an OpenVZ Container?

just a quick question, which i have had trouble finding the answer to: The OpenVZ Authors have been contributing a large amount of code to the linux kernel, in order to get virtualization features ...
0
votes
3answers
70 views

Can't access SMB shares on Windows but can on Linux

I've been having some problems with a Samba share that I recently set up. The share's configuration is as follows: [data] path = /media/data available = yes valid users = admin read only = no ...
-2
votes
0answers
11 views

Cisco digital content manager. How install omniORB and omniORBpy? [closed]

Good day everybody. I have some troubles with understanding how install package on cisco dcm. This hardware work with linux-system. I didn't find any package manager in system or compiler (g++, gcc, ...
0
votes
2answers
19 views

can't connect to copied Amazon ec2 instance

I have a linux instance that I set up a while ago to host a ruby website. I can connect to it via ssh, ping it and browse the website. I wanted to make a copy of this instance and upgrade the copy, ...
1
vote
2answers
32 views

Kerberos ktutil, what kinds of encryption are available?

I am attempting to make a keytab using ktutil. I get to choose the encryption type, but the ktutil man page does not offer a list of possible choices. I also don't know which encryption method is the ...
2
votes
1answer
23 views

OpenLDAP gives duplicate attributeType error

I am setting up a login node and am using openLDAP from the repository on Ubuntu 14.04 and I am running into an issue of duplicate attributeTypes. The problem seems to lie in the "gecos" field ...
0
votes
1answer
42 views

Issue with receiving emails via Dovecot/Postfix

I'm trying to set up roundcube on my server which seems to be working fine. I have gone through all of the steps and it allows me to send outgoing emails perfectly fine (tested that with yahoo), ...
-1
votes
4answers
52 views

need to make password less login for same linux server with same user [duplicate]

I need to make passwordless login for same linux server with same user. [airwide@eir ~]$ hostname -i 10.3.7.73 [airwide@eir ~]$ ssh airwide@10.3.7.73 airwide@10.3.7.73's password: how can make to ...
0
votes
2answers
58 views

Cant ssh to my public ip [duplicate]

I have been able to log on to my dev box (which is in my home network) for a while now, using ssh username@publicip however recently this has become impossible due to the following error ...
0
votes
0answers
16 views

Unable to connect externally to apache SUBVERSION [closed]

I've create an apache subversion using this link http://rbgeek.wordpress.com/2012/05/01/svn-server-on-ubuntu-12-04-lts-with-web-access/ Was able to access the repo using tortoisesvn internally from my ...
1
vote
1answer
32 views

Bridge in Debian Linux (Wheezy) cannot access WAN hosts by name

I'm having the same problem as this poster: bridging two network interfaces in ubuntu linux 12.10 AND being able to access it from that machine and would be grateful for any help on how to debug it. ...
-10
votes
0answers
42 views

Is Linux Server Free in Commercial Environment? [closed]

I am confused about the license on linux Server. I DO NOT need technical support ( I got experienced admins). I NEED to run linux (prefered server edition) in a commercial environment. So which of ...
0
votes
1answer
36 views

How to block server's internet access and only allow LAN [closed]

I was wondering what the best way to block a server's internet access is while allowing LAN connections. Essentially, I want a server to be only accessible by LAN. What ips, ports, etc should I block? ...
0
votes
0answers
17 views

How to preserve xrdp session on ubuntu 14.04?

I installed xrdp on my ubuntu 14.04 machine using the below commands. I can now remote desktop from my windows machine easily into my ubuntu machine. However, what I notice is when I close the ...
0
votes
1answer
27 views

Unaccent for postgresql 9.0.8 (over RHEL6)

I need to install the unaccent extension in a postgresql server 9.0.8 running over a RHEL6 box which doesn't have the contrib package. So I need to install postgresql-crontrib first. Facts: Server ...
0
votes
0answers
11 views

Self-hosted SMTP for Outbound Only Email [closed]

I have a web app that sends a lot of email, on the order of 5k-10k per day. They are not newsletters or marketing, it's reminders for events that users of the app are participating. The app is not a ...
1
vote
2answers
41 views

Reverse DNS entry when using “external” dns server

Administrator of my company allowed me to put my own server in our datacenter and gave me one public address of our AS pool. I've installed linux and configured basic services. Then i've added A ...
0
votes
0answers
20 views

Banning all sites except one for user on the list

Is there an easy way to ban all sites except one (ex. domain.com) for user on the list? user list: src limit_users { userlist /etc/squid3/ul_limit_users }
0
votes
1answer
21 views

booting straight into xen VM

I have a need to convert a bare-metal machine to a virtual-machine (via VMware converter). This part has been done successfully. I have then been asked to convert the vmware image to a XEN hvm. The ...
-2
votes
1answer
28 views

Multiport negation in iptables

Consider I want to make a rule that if destination port of the incomming packet is any of the ports 80,120,130 for established or related states the system should drop it but other ports should be ...
0
votes
0answers
12 views

Various hang-ups on Plesk 12 / debian squeeze system

I am experiencing strange system hang-ups. apache2 reacts in such a way that out of 5 requests, usually about 1 of those will simply take ages for the server to respond to, or it will simply vanish ...
0
votes
0answers
44 views

How to keep internet usage track per user on Linux server in wifi network? [closed]

I have a Raspberry Pi running raspbian and I have configured it as a wifi hotspot using Hostapd and dhcp server. Mobile clients connect to the wifi network and browse internet. Now I need to keep the ...
0
votes
2answers
18 views

IPFIX collector with extension support

I need a tool to collect IPFIX records and log the contents of each packet to a log file or database to validate the accuracy of an IPFIX emitter. This IPFIX emitter sends enterprise extensions in the ...
0
votes
1answer
41 views

Restarting Apache 2 broke website

I was having difficulty restarting Apache on Ubuntu. I tried sudo netstat -ltnp | grep ':80' I get: tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN 31855/httpd if I ...
0
votes
5answers
109 views

Should I change the SSH port to < 1024? [duplicate]

Many server configuration guides recommend that the SSH port should be changed to something > 1024, for obscurity and to avoid conflicts. This is interesting, because it recommends using a port < ...
0
votes
1answer
66 views

'www.', nameservers, and DNS records

TL;DR: 'www.' doesn't work, haven't got BIND configuration right yet. I have a domain name, let's call it 'example.co.uk'. I have my own server with several websites on it, all expressed with the ...
1
vote
2answers
55 views

Should I partition a RAID or just create a file system on it? [duplicate]

Given a RAID 6 created from 6 drives /dev/md0 which should be used fully for data (no booting from it, root and swap are on a different drive), should I create one partition on that device and then ...
1
vote
2answers
95 views

CentOS 6 Yum update issue

I get this error when I try and run 'yum-complete-transaction' in shell: [root@namesvr ~]# yum-complete-transaction Loaded plugins: fastestmirror mirror speeds from cached hostfile Loading mirror ...