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

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7 views

Can't allow users to log in via SSH (Bash, OpenSSH, CentOS 6.5)

I am running a CentOS 6.5 machine remotely via SSH. I use RSA keys and have disabled PAM. The problem that I am having is that whenever I add a new user and want him/her to log in via SSH, they are ...
1
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0answers
15 views

CentOS 6.4 - Trying to lose link, but can't

I am trying to test out active/active LACP bonding between CentOS 6.4 and Arista. One of the tests I'm doing is to shut down an interface on the host and see what happens. On the switch: Link ...
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0answers
14 views

Can I update Ubuntu with active users logged in?

I would like to run apt-get dist-upgrade, but I don't know how this will affect the currently logged in users. How can I find out: 1. will a restart be required 2. will the system be ...
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0answers
10 views

Changing DIR colors in terminal/ssh [on hold]

I am running centos and connecting through SSH with PuTTY, I have read in multiple threads now that changing colors can be done in nano /etc/bashrc nano /etc/DIR_COLORS At default the color is ...
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votes
1answer
18 views

zabbix & configuration apache proxy header with headers

I wanted to implement checking a page that is available for the two data centers. However, web scenarios zabbixie 2.2.1 does not properly handle headers. I got the idea that it will use for the apache ...
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0answers
12 views

Can't change interface duplex and speed on linux

I have eth0 interface with local ip. After reboot, interface have 10 speed and half duplex. After change with ethtool ethtool -s eth0 speed 100 duplex full autoneg off\on link is down, after link ...
1
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0answers
5 views

rsync --iconv option on Mac not working (sync from remote Linux server to local Mac)

I want to use rsync to backup data from a remote Linux server to my local Mac. And I want to initialise this operation on my local Mac. All works fine except that there is a special character problem: ...
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0answers
6 views

Issues with Gluster and how to stress test it

I'm new to gluster and have just installed it on 2 webservres that are about to deliver a lot of video/audio files (about 16000 files, ca. 1TB in total). What is a good way to test my websever ...
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0answers
7 views

is possible to set a default user to be shown at startup LightDM? [migrated]

Is possible to set a default user to be shown at startup LightDM?
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0answers
19 views

Why in 64 bit machine not able to use whole free memory as disk cache. Facing sudden disk cache drop

I know, process can use disk cache as free memory as required. In my 32 bit machine I can see, disk cache can use all free memory. But in 64 bit machine can't. In 64 bit machine, I have 252GB RAM(free ...
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0answers
6 views

Unable to Configure Quotas in RHEL6 & CentOS6- quotecheck returns error message

Unable to Configure Quotas in RHEL6 & CentOS6- quotecheck returns error message I've created new partition(/dev/sda6) and mounted it(on /hulk). Edited /etc/fstab file to give quotas on the ...
-1
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0answers
21 views

PostgreSQL server does not start with increased shared_memory

I've installed a new PostgreSQL server on an empty Ubuntu 14.04 virutal server. The PostgreSQL server works fine in default configuration, so i thought it would be a good idea to improve performance ...
2
votes
2answers
127 views

tail all log files in a directory | exclude zipped files

Im trying to find the right command to tail a bunch of log files whilst excluding the zipped files in a set directory. The log files are being zipped as they become oversized. At the moment Im using: ...
0
votes
3answers
27 views

understanding resolv.conf nameserver through system calls

I am trying to understand how /etc/resolv.conf /etc/nsswitch.conf exactly works and what is significance of nameserver entry 127.0.1.1 I did strace ping google.com to get to know about the system ...
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0answers
48 views

Deliver All Emails Sent To A Server No Matter The Domain To A Single User

I am working on a solution that requires an email server that deliver all emails no matter what domain it's sent to (preferably without changing configuration with each new domain) to a single user ...
-1
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2answers
31 views

how to get a connection between Windows and Linux without an existing DHCP server

Scenario: In general a ubuntu machine (called server) runs in a network and gets an IP from it. Due to testing, sometimes a windows machine (client) is physical connected to the ubuntu machine ...
-5
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0answers
23 views

accidently i deleted var/tmp file in centos server [on hold]

accidently i deleted var/tmp in root directory ,, and i reboot my server,, i cant login to ssh and my site in 500 internal server error, i try to restart service in whm but i cant, got error with ...
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0answers
3 views

How do I start an application after I ran the installation script? [migrated]

I've been looking around the internet and I can't find a direct answer to this. I've install Komodo IDE by downloading the .tar.gz file (from http://komodoide.com/download/) and using the tar command ...
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0answers
3 views

SATA controller or disk failing? [migrated]

Recently my laptop IO became deadly slow. I investigated a bit, and according to smartmon tools I have no errors on the disk, tough I'm getting a lot of errors in the syslog: ata2.00: exception Emask ...
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2answers
19 views

How to remove Postfix queue messages sent to a specific domain

I have a server with multiple domains. How can I clear all Postfix queue messages for a specific domain?
1
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1answer
41 views

Access NMEA reference clock and GPS position simultaneously

I noticed two approaches to get an accurate time from GPS (with PPS). Using ntpd either with NMEA reference clock or Shared Memory Driver My problem: I want to have a very accurate time and access ...
0
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0answers
13 views

watchdog service is not working because /dev/watchdog does not exist

There is a ITE8783 watchdog chip placed within my machine (OS Ubuntu 14.04.1). The kernel module it87 supports is. This module was not automatically loaded on startup. So I added it87 to /etc/modules. ...
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1answer
28 views

Diagnose what is causing Linux system load

I understand that system load is kernel usage such as IO or network. If you don't believe you have high load of either of those two items, what would be some recommended steps to track down what is ...
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votes
1answer
31 views

Linux Logs Intrusion Detection [on hold]

I am doing a research for security monitoring in Linux system, while I am doing some testing on a virtual machine. Currently I am discovering the logging mechanisms and I am trying to simulate a ...
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votes
2answers
37 views

is it possible to have Web server and NAS on the same hardware microsever? [on hold]

I have a HP microserver proliant gen 8, and i want to know if there's a way to make this hardware work as NAS with freeNAS ... etc, and in the same time make it work as a web server with Centos Nginx ...
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0answers
24 views

mfks.ext3/4 on a loopback mounted file — raid1 deadlock? [on hold]

I'm having a problem with creating filesystem on raid1 array. I'm operating on files instead of real drives. That's what I'm doing: creating 2 2GB files with dd attaching them to loop0 and ...
0
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0answers
17 views

Linux quota - wrong disk usage

I'm using centos 6 and quota shows wrong disk usage for all users... Something like multiply real disk usage... # quota -v myuser Disk quotas for user myuser (uid 511): Filesystem blocks ...
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votes
1answer
35 views

linux - how to download , uncompress and split 100k Files [on hold]

I have a txt containing a list of 100.000 urls containing each one a tar.gz file ready for be downloaded that consists in about 680 MB. For each given url the operating system has to do the following ...
0
votes
0answers
24 views

CentOS 6.5 Bridged Networking Fails

I have a CentOS 6.5 Server that I wish to host VPS on, as well as installing SolusVM, to do this I need to bridge the network adapters for the Server and the VM's ( so the VM's can connect to the ...
1
vote
1answer
22 views

change puppetdb dump location instead of /var/log/puppetdb

I have seen a few hprof dumps of puppetdb indicating crashes. While I investigate that is there a way to configure that dump location to be somewhere else. While I do have space constraints on ...
0
votes
1answer
41 views

How to trace dropped TCP connections?

Trying to help someone with a situation where TCP connections get mysteriously dropped after a few minutes for no apparent reason (this happens even with non idle connections). Both client and server ...
1
vote
1answer
31 views

Rsync failing with “file too large”

I am writing what should be a simple backup script to copy all of my media files to an external USB drive. There seems to be one file that it chokes on and I'm not sure why. Just trying to copy that ...
-3
votes
0answers
22 views

Recommend local server for 50 user [on hold]

I am new to the server side. I am asked to setup a local server for 50/60 users max. The server will be running linux, mysql and a java application server (for a CRUD application, using spring, ...
0
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0answers
12 views

locale-gen and locales issue

I am running Ubuntu 12.04. I was trying to install vsftpd and some error appears. Trying to install other packages using apt-get also gives the same error. Here are the details: sudo apt-get install ...
19
votes
7answers
4k views

Poodle: Is disabling SSL V3 on server really a solution?

I've been reading all day about the Poodle vulnerability and it I am bit confused now vs Security and Revenue. If I disable SSL V3 on Server (SSL V2 and V3 both will be disabled for Apache) clients ...
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0answers
10 views

OpenLDAP on CentOS 6.5, changing OU?

Followed these instructions (apparently not completely) http://www.itmanx.com/kb/centos6/install-openldap-phpldapadmin Under "Create initial LDAP structure" where I define the initial structure, ...
1
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0answers
17 views

How do I specify what PVs are used for mirroring when adding a mirror in LVM to an existing LV?

I've got an existing VG containing a single LV on a RHEL server that consists of a handful of SAN disks. In an effort to migrate the server to a newer SAN, I'd like to mirror the existing storage to ...
0
votes
1answer
46 views

BIND failing to resolve with 'WARNING: recursion requested but not available'

there are no errors in the logs and query logging won't initialize iptables is fully disabled but the server will respond with "WARNING: recursion requested but not available" because my client ...
0
votes
0answers
12 views

save alsamixer input source [on hold]

I am not able to save the input source of my alsamixer. Every time I reboot the system the input source is set back to front mic. I want it to stay as rear mic. I tried alsactl store I disabled ...
1
vote
1answer
29 views

mdadm RAID6 to RAID60

Is it easy to convert a RAID6 to a RAID60? Right now, I have an 8-drive RAID6. I'm looking to upgrade to a 3U 16-bay system and thinking of having a 16-drive RAID60. Is it possible to move my ...
0
votes
0answers
17 views

SVN+SSH file permissions and login

Can't seem to log into the Tortoise Repository Browser or make any write changes locally. Only read access works. Our RHEL 6.5 linux box has subversion installed. Our svnserve.conf is configured as ...
0
votes
0answers
5 views

Strace php script - ERESTART_RESTARTBLOCK (To be restarted)

I am trying to troubleshoot a WordPress installation that is loading the front page very slow. I straced the index.php file with the -T option to see where the delay occurs and it pauses 2 times for ...
1
vote
2answers
53 views

EPEL Repo for CentOS 6 causing error

I've got a VM running CentOS 6 (64bit) and I'm attempting to add the EPEL repo like usual to install various packages as I do quite regularly. Today, I'm experiencing some strange errors yet I'm ...
0
votes
0answers
11 views

Apache/HTTPD not creating/using error_log

The location of my apache log is set to /var/www/vhosts/mydomain/logs/error_log or /var/www/vhosts/mydomain/logs/subdomain.mydomain.com/error_log for my subdomains. I once deleted the error_log for ...
1
vote
1answer
33 views

Monitor a process using monit in ubuntu

On my server I have started a service using a script created by myself. I want to monitor that process using monit. I didn't see any .pid file for that process in the /var/run directory. How can I ...
-3
votes
0answers
28 views

os :rhel 6, exim mail server 4.80.1 [on hold]

I got an error like this [ root@localserver exim-4.80.1]# make `Makefile' is up to date. make[1]: Entering directory `/root/exim-4.80.1/build-Linux-x86_64' >>> version 4.80.1 #12 make[2]: ...
-5
votes
0answers
37 views

Exim 4.80.1 , OS:RHEL 6 [on hold]

I got error message like this while I am doing the "make" command. I want your help to resolve the error. [root@localserver exim-4.80.1]# make `Makefile' is up to date. make[1]: Entering directory ...
0
votes
1answer
24 views

IP Addresses over IPSec

I've got four hosts setup as follows: I've got an IPSec tunnel via OpenSwan over the internet between Servers B and C. Servers A and D are configured to route traffic to the other via B and C ...
-2
votes
1answer
21 views

Mailscanner Installation. Where to put '/^Received:/ HOLD?'

I am trying to install Mailscanner onto a Centos VPS and there is a section of the tutorial which I am reading that states the following: Next, open the file /etc/postfix/header_checks and add ...
1
vote
1answer
34 views

UDP Proxy with cloned packets

Having UDP messages sent from dynamic public IP periodically to public IP X:20000. Need a proxy that listens in IP X:20000, then forwards duplicate/clone packets to X:20001 and a different machine ...