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

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Client successfully connects to OpenVPN server but with no internet access

I'm trying to setup OpenVPN with static key authentication(instead of TLS) on TCP port 443, the client is also running behind an HTTP proxy, and it all connects just fine, except that the internet is ...
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9 views

why did pam_tty_audit stop working?

I recently installed the following updates to my system: Upgrade: libpam-runtime:amd64 (1.1.8-3, 1.1.8-3.1), libpam0g:amd64 (1.1.8-3, 1.1.8-3.1), libpam-modules:amd64 (1.1.8-3, 1.1.8-3.1), ...
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15 views

Removing Mdadm raid system and boot with a single disk

I have a linux system running a RAID 1 (MDADM) system. For virtualisation purpose, i need to remove this system of RAID and then boot again the machine with just the main hard disk. Now.. I am not ...
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0answers
32 views

How to keep the time on multiple servers in sync

I want a cluster of servers to have the exact same time. All are using UTC time zone. Using NTP currently, i still see they seem to be off by 10-20 miliseconds each. Whats the best way to have them ...
0
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0answers
10 views

Spooling error trying to print through WinXP to Win7 from Linux

I recently posted another post here about not being able to print from linux to win7 but found a solution that i might be able to work with. What we have is Fedora Core 2.x.x(2003), Redhat 3.2.3, ...
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0answers
10 views

pipe rrd to a new directory

I am chrooted and running out of drive space, so I mounted back to the host drive which has plenty of space but cannot seem to pipe the outputted data to my empty drive [root@localhost rra]# ls ...
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2answers
30 views

Could you explain this “chroot” /tmp directory creation?

In the following linked article they explain how to create a "chroot" /tmp directory. I'm a bit confused by what they did. Could someone explain what the following commands are doing? Noexec and /tmp ...
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1answer
36 views

Error MySQL CentOS - Starting MySQLCouldn't find MySQL server

I can not make any operation in mysql: root@server2 [/]# /etc/init.d/mysql status MySQL is not running, but lock file (/var/lock/subsys/mysql[FAILED] root@server2 [/]# /etc/init.d/mysql start ...
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1answer
15 views

apache rewriterule exception

I'm having issues redirecting a website at work to a new URL. The redirect of the site works just fine. An exception to the redirect works beautifully as well. The problem is that I need multiple ...
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0answers
15 views

Nagios - check_ntp_time - Offset Unknown

I have a local NTP server running on the subnet to keep other subnet nodes in sync, without every node syncing with upstream servers. But, while implementing the check_ntp_time plugin for Nagios I am ...
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0answers
21 views

Is it possible to redirect all port 53 traffic? [on hold]

We want to redirect all port 53 traffic to our DNS server using a "Raspberry Pi" acting as a switch. Is this something that is possible/realistic? (All DNS traffic, including applications that try to ...
1
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1answer
23 views

chroot 64 bit -> 32 bit = 'command not found'

Very obviously 32 bit cannot chroot to 64 bit but I am confident that I have successfully chrooted from 64 bit to 32 bit using Gentoo but when I [root@localhost ~]# mount /dev/vg_atom1/lv_root ...
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0answers
9 views

mpstat not displaying intr/s column

I'm on CentOS 6.5, sysstat 9.0.4.22.el6 For some reason mpstat is not displaying the intr/s column I'm running it this way, for example, and only these columns get displayed: mpstat -P ALL 1 5 ...
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0answers
13 views

Transparent Proxy squid TCP_MISS/503 Error in all pages

I m trying to make a squid proxy server with to work as a transparent proxy server, and i m facing some issues that i m unable to figure out the reasons. The setup i m using is several VLAN's with ...
0
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0answers
23 views

BASH: Create a temporary password variable that doesn't get stored in history? [duplicate]

I have a script that runs a curl request in a loop. The request needs to include my credentials using the --user option. I'd like to assign my password to a local variable $password, and then supply ...
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0answers
15 views

Uninstall Webmin from Ubuntu 12.04 [on hold]

I recently uninstalled webmin from an ubuntu 12.04 virtual machine but now I want to reinstall it. I followed the same procedure (I m writing the wget command below) with no success. Does anyone have ...
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2answers
39 views

Simple method of detecting and reporting server outage?

I'm looking for a super simple way to monitor one server from another, in case the other goes down (e.g. based on ping), and then send an email if it does. Is there anything out there like this ...
0
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0answers
14 views

Server Remote Console Stopped working after reboot

I was working on IBM x3650 M4 Physical server running Red Hat 6.4 with HA LVM. I upgraded the kernel to latest version and reboot it. The server came up just fine and booted with latest kernel. Then ...
0
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1answer
19 views

External bitmap concerns

I am considering adding an external bitmap to my mdadm RAID6. The benefits seem absolutely incredible in terms of rebuild time but I do have some concerns. I didn't plan for it so I don't have much ...
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0answers
50 views

oh my god, I just did accidental rm -rf / in root [duplicate]

I am using centos. I was on remote server via ssh logged in as root and accidentally ran sudo rm -rf / what can I do now. I was not able to get into server. Is all my data gone?
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0answers
20 views

HP Microserver Gen 8 cant from the hard drive [duplicate]

I got HP Microserver Gen8 with two 1TB Seagate Constellation drives installed. I turned on AHCI mode in BIOS and after that successfully installed Debian 7 Wheezy. All drives correctly detected. BUT! ...
1
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1answer
47 views

Unable to backup Windows directory using Bacula

Backup and restore works on Linux Bacula's Director (DIR), File Daemon (FD) and Storage Daemon (SD) have been installed on a Linux host, a backup has been run and the files could be restored. Backup ...
2
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1answer
36 views

Linux filesystem page cache - hot or not

How can you tell how much of the filesystem cache is hot (frequently accessed) or not? The use case would be determining when you are approaching the limits of your memory but before you actually hit ...
2
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1answer
29 views

Does changing /sys/block/sda/queue settings take effect immediately?

How long does it take for changes to the following settings to take effect: /sys/block/sda/queue/scheduler /sys/block/sda/queue/rotational /sys/block/sda/queue/read_ahead_kb Is it ...
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0answers
6 views

dynamic IP firewall configuration for public-yum.oracle.com and clam AV

I currently have Clam AV installed as the AV solution for an Oracle Linux environment. The firewall that I use allow filtering only through specific IPs and thus currently, I am not able to configure ...
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0answers
19 views

Is there a software that can show me network requests in detail by scripts and application? [on hold]

I write web application, small java and .net applications that talks to each other over network or internet. Is there any software for Mac, windows and linux that can show me log or network requests ...
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0answers
19 views

Using html, css, js, php, mysql and cypher for web application hosted on AWS [on hold]

I'm a total newbie on setting up the right server environment and really need some advice. I'm building a new website from the bottom. I want to use the following languages for the following purposes: ...
0
votes
1answer
8 views

Can't build crc32c(a nodejs package)

It's not really nodejs related. It's a C implementation. Firstly, while building, it exits with error: "warning: linux/if_alg.h: No such file or directory". Then I run yum install ...
0
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1answer
16 views

find remote ip address (dyn A fail) [on hold]

I set a dyn A entry for my DSL-connection at home, but after after some weeks I detected, that it doesn't work and my server is unreachable. Does anybody have an idea, how to find the ip-address for ...
3
votes
1answer
45 views

Can I use something like a tunnel for SSH in this Linux/Windows Remote Desktop scenario?

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 ...
1
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2answers
30 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 ...
2
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1answer
17 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 ...
1
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1answer
15 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 ...
3
votes
1answer
43 views

btrfs Integrity and Stress Testing

A DevOps colleague is recommending that we begin transitioning our production environment to using btrfs. We have primarily ext4 filesystems, though some low-usage servers using ZFS (on Linux). As ...
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2answers
49 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 ...
0
votes
1answer
27 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: ...
2
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0answers
14 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 ...
0
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2answers
25 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 ...
0
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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
votes
1answer
41 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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0answers
19 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 ...
-1
votes
1answer
36 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
14 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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votes
1answer
32 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 ( ...
0
votes
2answers
35 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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votes
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 ...
-1
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0answers
54 views

mv deleted my directory. Why? [migrated]

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
57 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 ...