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

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Using Remote Desktop for tunneling

I have a Linux server (call it server-L) which i cannot directly ssh to it. In order to ssh it i should connect to a windows server(call it server-W) and then make ssh connection from it to my Linux ...
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1answer
20 views

order 4 allocation failure disaster

Some environment details first: Hardware: Intel Server Board S2600GZ 2 x Intel Xeon CPU E5-2620 64GB DDR3 RAM Intel RAID Controller RS2BL (LSI SAS2108) with 4TB LVM Volume made of SAS disks ...
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8 views

facing issue while installing oracle Database 11g on rhel5 And SOA

While installing required rpms for both SOA and Oracle the below rpms are conflicting with each other glibc-devel-2.5-49.x86_64.rpm and glibc-devel-2.5-24.i386.rpm How can I fix it? one package gets ...
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1answer
11 views

ifcfg-eth0.200 is not responding to arp broadcasts

I have a Centos router doing a stupendous job in a setup similar to this: eth0 --> no IP eth0.200 --> 192.168.200.1 eth0.201 --> 192.168.201.1 ... so on up to eth0.213 --> 192.168.213.1 I have ...
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1answer
31 views

Linux: How to find out which ports did my application use [without being root]?

I have the following question. On a CentOS machine I run an application which connects to another system. I am interested in finding out on which ports (input/output) the communication happened. The ...
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1answer
22 views

crontab truncates file path

I try to run the following command: crontab -u root /root/iss/current/node/bin/installers/nl_brandless_selector_full_hd/nl_brandless_selector_full_hd_cron_file But I got an error like this: ...
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0answers
12 views

Samba: Authenticate only local accounts over AD?

I have a samba server where I create all the linux accounts and corresponding SMB accounts via a application I built. I manage all the permissions for all of our shares via ACL's also using the ...
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2answers
23 views

Linux printing from Windows stopped working after upgrade to Windows 7: “Unknown error condition in stat: Function not implemented”

my name is Justin and i am not a linux guy I do not know much about it only windows. We're a company and we're having troubles with printing and sharing from linux to Windows 7. I can connect to ...
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0answers
15 views

RHEL 5 with PHP 5.1.6 VS RHEL 6 with PHP 5.3.3: Security implications

Using only the RHEL Repositories, RHEL 5 considers PHP 5.1.6 to be up to date, and RHEL 6 considers PHP 5.3.3 to be up to date. My question is: Are security updates/patches backported so that 5.1.6 ...
2
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1answer
38 views

How to get the list of SSH tunnels connected with the username used?

The connection is established from Desktop(D) to Server(S) with ssh -D PORT username@Server. From the Server, the list of ssh users connected can be obtained with who, but the ssh tunnels are not ...
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18 views

different interactive and non-interactive shells

A user account has it's shell defined in passwd file as bash. I would like to change this user account's shell to tcsh for non-interactive jobs (like ssh ), but keep interactive shell to bash. Is ...
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1answer
34 views

Move directory from local machine (linux) to SSH server

i am trying to move one my folders from my local machine to my ssh connection. i have been trying with the following command: scp -r /var/www/foo/ root@******/var/www/foo However when i try i get ...
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0answers
25 views

Querying a remote POP3 Mail server using BASH [migrated]

I'd like to connect to our mail server, look for a certain pass phrase in the subject and if found then run a script. How can I achieve this with BASH other than awkwardly scripting Telnet? Thanks!
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0answers
11 views

Freeswitch, No such file or directory on CentOS

I am currently trying to install ITC fax on a fresh digital ocean droplet (CentOS 6.4 x32). While the installation works fine I am stuck on the part that requires the installation of Freeswitch. ...
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1answer
28 views

“ifconfig” command not found and networking tools package information needed

I have 2 questions : 1) "ifconfig" command is not found in centos 7, i tried to find in /sbin, there also command is not available. Doesn't this essential tool not included in minimal installation ( ...
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2answers
32 views

How to partition drive for ZFS

I'm trying to create a ZFS pool using the following command: zpool create MyPool disk /dev/sda However, I get the following error: cannot use '/dev/disk': must be a block device or regular file ...
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1answer
16 views

How do I find out what RPMs make up a “yum group install”?

I am trying to install the Gnome Desktop Environment on a RHEL 5 system. I am NOT connected to the internet and do NOT have any local repo or the install disks. Under normal circumstances, where a ...
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1answer
24 views

ssl and loadbalancing : answer directly from backend?

Context debian 64bits. I try to learn https. I created a loadbalancer but I cannot answer tthe client directly from the backend since it receive the LB ip. Question I would like to know how I ...
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1answer
52 views

mv deleted my directory. Why?

I was trying to correct the spelling on a directory, issued a mv command, and the directory is now gone. I'd like to understand--specifically--what happened. Here's the command I ran: mv ...
1
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1answer
56 views

Debian mirror is out of control

I've inherited a system (Debian Squeeze) that has a Debian mirror set up within it, which is something I have basically no experience with. The problem with it is, it has completely filled up it's ...
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0answers
7 views

Suse 11 Sp2 pam-config doesn't work

I try to add pam_ldap module in Suse 11 Sp1 Server 64 bit using: pam-config -a --ldap OS information: node01:~ # file $(which pam-config) /usr/sbin/pam-config: ELF 64-bit LSB executable, ...
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0answers
30 views

IP TABLES port forwaring corrupts my packets?

Here's my scenario. I have a WORKING DAEMON receiving packets through a proprietary protocol (mounted on the port 5000) that has been working flawlessly for over a decade. I have a weird problem ...
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0answers
12 views

Killing Oracle frmweb processes with no jobs - with bash

I am looking for a script that will allow me to find frmweb processes that do not have any jobs and kill them. A few places, including superuser, have recommended monit, but that doesn't seem to be an ...
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6 views

Rail's FileStore with Linux Disk Caching or RAMdisk?

I have a Ruby on Rails application that stores it's catched files on the filesystem (Rails file-system cache). I was thinking about changing to memcached Store, but a short test shows it isn't a big ...
1
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1answer
37 views

Puppet read output of command and store in a variable

I am very new to puppet and trying to execute my puppet script but its failing all the time. I want to store the output of below bash command and want to store in a variable which I can use later: ...
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1answer
32 views

set up a small maintenance program on a server

I have a small webapplication (PHP and XSLT based) which uses an intern file cache and saves the user's search data. Now, I don't want to run out of disk space, so I need a program for cleaning up ...
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1answer
50 views

100% usage for 11G/40G, how is it possible?

How is it possible to have the stats below: 11G used over 40G Size and no more space available. Now I cannot send my e-mail because I receive: An error occurred while sending mail. The mail server ...
3
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1answer
73 views

Massive packet duplication

Short Version: We've had a problem with a particular server receiving massive duplicates of packets. After much fault finding we found the problem was caused by a switch sending my packet out every ...
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0answers
25 views

When to look for Apache alternatives [duplicate]

How many pageviews, UU/day will require to move on faster webserver than Apache? Let's say it's Wordpress with few plugins webpage with 20-30 articles and few some average complex php scripts. 2GB ...
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2answers
29 views

How can you force linux software raid not to disable a disk for recovery?

I'm trying to recover data from a RAID5 array. 2 of my 4 disks unexpectedly failed at the same time. I am able to start the array by forcing it. mdadm --assemble --scan --force The array starts up ...
3
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2answers
50 views

Evaluating uncorrectable ECC errors and fallback methods

I run a server which has just experienced an error I've not encountered before. It emitted a few beeps, rebooted, and got stuck at the startup screen (the part where the bios shows its logo and begins ...
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17 views

Requirements to setup Own Server for Web Host [duplicate]

I asked it earlier on Stack Overflow I run a small Software Firm and i have to host a lot of web sites and Web applications. Currently i have 2 Shared Hosting on Godaddy and Bigrock respectively and ...
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17 views

RHEL6: bonding NICs with DHCP reservation problems

I am using a 4 NIC bond with Bonding Mode: transmit load balancing and a port channel is configured on the switch. I have a DHCP reservation for the IP address being used for the bond. I configured ...
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2answers
85 views

Linux/Bash: Test if my server is opened to the Internet programmatically/via CLI

RHEL 6 and Bash. It would be easy if I had a remote server to just run nmap from, or even curl/wget, but I only have access to servers on our side of the firewall. I know I can manually check ...
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1answer
12 views

CentOS send mail with external SMTP server and without local daemons

I've got a little old server with CentOS 6.5 on it. The hardware is old and crappy, but enough for what it has to do. Which consists of SSH (+SFTP), Apache, PHP and MySQL. Still, I'm trying to cut ...
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1answer
23 views

Restarting shell script with &disown using Monit

I have a shell script that runs a C++ backend mail system (PluginHandler). I need to monitor this process in Monit and restart it if it fails. The script: export ...
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0answers
16 views
+50

Corosync :: Restarting some resources after Lan connectivity issue

I am currently looking into corosync to build a two-node cluster. So, I've got it working fine, and it does what I want to do, which is: Lost connectivity between the two nodes gives the first node ...
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0answers
20 views

“Unstable” NFS mount point

I've posted that on StackOverflow and I've been advised to move it here. Sorry for that. First of all, this is the first time I'm posting a question on ServerFault, so please don't kill me if I've ...
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2answers
268 views

Low latency TCP settings on Ubuntu

There is a server for measurements running on Ubuntu in my lab . And there is C program, which receives data through TCP connection and should as soon as possible send a reply. Network latency when ...
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0answers
30 views

Why “scope link” ipv6 address can be pinged via interfaces which they are not active on

[root@2_01 ~]# /sbin/ip -6 addr show pubeth0 inet6 2001:1::6/64 scope global inet6 2001:1::1/64 scope global inet6 fe80::20c:29ff:fe69:f9e8/64 scope link [root@v2_01 ~]# /sbin/ip -6 addr show ...
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3answers
52 views

is it possible in this case to get two IPv6 networks to communicate over the IPv4 Internet?

I have a setup of a laptop connected to a cellular IPv4 network (3G usb dongle) and PC connected to another IPv4/IPv6 network. Both have been configured to run as IPv6 routers and each has its IPv6 ...
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1answer
34 views

Real Time Data Mirroring in Linux Servers

Which are the different techniques available for real time data mirroring / backup of full server to restore it from a entire system crash? Is it better to purchase a separate server for data ...
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0answers
11 views

FTP User Action History

Is there anyway to get logs of the actions that an ftp user has done on my linux (centos) server? Specifically, I am looking for file changes, uploads and downloads?
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0answers
15 views

shinken/nagios discriminative between warning alert and critical alert

i using shinken for my monitoring system. Now, i have a problem when i configure shinken notification. My purpose is to discriminative between notification for warning state and critical state of ...
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1answer
29 views

recovering overwritten file in ubuntu

I recently just overwrote one of my sql dump file by doing the following command: mysqldump -u root -pTucson85719@ Directory > directory.sql is it possible to get back the file that is being ...
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2answers
25 views

Changing process priority in linux for jvm process

Is it fine if I change the JVM process priority through nice at server machine [linux]. I wanted my JVM process to use maximum resources from OS. What is the standard practice? Do people tune the ...
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0answers
7 views

Embed terminal of php website [on hold]

I've set up small file server based on Raspberry Pi. Also it runs apache2 WWW server. I've created the login part for embedding terminal, but I don't know how to embed a Linux Terminal in a WWW site ...
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22 views

High data on recv-q buffer and thread lock on java.io.BufferedInputStream in linux

We have a java application running on linux (ubuntu server). We have been facing high recv-q problem since quite some time. Application gets hang and does not read data from socket every few hours. ...
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1answer
24 views

Nothing is written in php5-fpm.log

I have two servers which is Ubuntu 12.04 and Ubuntu 14.04. When I use Ubuntu 14.04 in my new server and enabled the php-fpm log file found under /etc/php5/fpm/php-fpm.conf that reads as follows: ...
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3 views

How to change Linux hot key [migrated]

I would like to know if it is possible to change the hot key on a Linux distribution. I have already tried to re-configure the hot keys in the virtual box preferences but i have not been able to ...