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

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2
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329 views

MD Raid can't be assembled

I was running a Raid5 with 3 disks at on my homeserver. But had some problems with the back-plane for the disks. The disks weren't detected reliable. So I replaced the back plane and the disks are now ...
2
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561 views

does somebody know whether a linux / opensource driver does exist for the apple xserve 3,1 raid controller?

I'm trying to install linux on a apple xserve 3,1 which comes with some strange raid controller that does not get detected by linux. lspci is telling me: 01:00.0 RAID bus controller: Apple Computer ...
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93 views

Linux ftp server supporting millisecond timestamps in transferlog

I'm looking for an ftp server for linux that will satisfy the following constraints Should be able to log when a file transfer (STOR command) is initiated. Should be able to log the time taken for ...
2
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219 views

Why I get different network traffic values from dom0 and from domU?

I'm using Xen 4.0.1 with Linux 2.6.32-5-xen-amd64 (standard packages on a Debian Squeeze system). From Xen Networking: For each new domU, Xen creates a new pair of "connected virtual ethernet ...
2
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575 views

How to install a program remotely using Zentyal server and Windows7 clients

I'm using Zentyal in order to use it as Domain Controller. All the clients are Windows7. I, as domain admin, need to install, in several computers, one application that requires admin privileges. ...
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199 views

Can't connect Tomcat via JMX

I couldn't connect to one Tomcat server via JMX in a Linux virtual machine. There was no firewall running. All seemed ok. By searching on the web I found out that I have to use the ...
2
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0answers
555 views

Getting ipsec-tools to work between Ubuntu Lucid hosts

I have two hosts, one is Charity with IP 67.207.128.184, the other is Hope with IP 67.207.130.204. I've installed the ipsec-tools package on each host. I have not installed racoon on either host. ...
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296 views

Postgres shell logout weirdness on debian

So, strangest thing happening on Debian PostgreSQL user: lab3:~# su - postgres postgres@lab3:~$ plogout lab3:~# And: lab3:~# su postgres postgres@lab3:/root$ pexit lab3:~# What is happening ...
2
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481 views

processes freeze on acessing /proc/$PID/exe of busy process (rrdcached)

I'm trying to use rrdcached. Currently I'm testing how much data/connections it can handle. I tried making > 100 connections every 5 minutes with data from last 5 mintes with 10s resolution. ...
2
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296 views

Why do I have to remount an smb share if I want to recreate a directory?

Suppose I have an SMB share mounted somewhere in a Linux filesystem. If I do this (from within the mounted share): rm -rf some-directory mkdir some-directory ls -a some-directory some-directory is ...
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30 views

postfix - hock - extracting information out of processed emails

The setup Linux, Debian Wheezy, serves as mail server for about 1000 users. Courier and Postfix installed in this box. Info about the server It is a postfix setup which drops the emails to the ...
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25 views

FreeRadius Error reading /etc/freeradius/huntgroups

I've configured freeradius to use sql, everything was working fine, I was doing some tests with the users, and suddenly I cannot start the debugger because of this error : rlm_preprocess: Error ...
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18 views

(Unexpected?) blkio controller behavior

I'm using docker 1.4.0 with lxc-1.0.6 and cgroup-lite-1.1.5 on Ubuntu 12.04. I have 3 hard disks (/dev/[sdb-sdd]) that I write to from 3 distinct containers. They have only one XFS partition, mounted ...
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32 views

Ghost not working on CentOs 7 despite clean install

I followed most of this tutorial to install Ghost on CentOs 7 but, despite the install going perfectly I am unable to see the welcome page. Here are a list of commands I used, let me know if I made ...
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0answers
52 views

OpenVPN ignoring openvpn.conf, throws unrecognized or missing option

I set up openVPN on Debian, but can't start the service. [FAIL] Starting virtual private network daemon: openvpn failed! Syslog says Options error: Unrecognized option or missing parameter(s) in ...
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0answers
30 views

LVM2 Thin pool transaction_id mismatch

I believe we trashed some LVM thinpool metadata while moving 2 volume groups to a different machine. We now trying to reactivate the volume groups on the original machine. The physical volumes, volume ...
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0answers
14 views

Configuring openldap/PHP LDAP against “signed” LDAP connections with Active Directory

This may sound like a stupid question, and maybe it's already been answered, but I can't find a definitive answer anywhere, so I thought I'd ask. When someone enables "Domain controller: LDAP server ...
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89 views

Ping connected Clients to VPN tunnel PPTP

I have set up a vpn server on CentOS 6 (PPTP) following this guide... Server End ifconfig ppp0 Link encap:Point-to-Point Protocol inet addr:192.168.1.15 P-t-P:192.168.1.200 ...
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29 views

Build a repository with apt-mirror for ubuntu with changelogs

is it possible to create an internal mirror of the ubuntu update repository with apt-mirror including all the changelogs. I have the following output when i ask for the changelog of a package: ...
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30 views

“Open files” ulimit applied only when using 'su - userX' but not when I SSH into server

I'm running Ubuntu 12.04. My problem is that the ulimit values described in limits.conf are not being applied when I SSH into my server using a non root account. Either that or they are being applied ...
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41 views

Copying from NFS mount crashes Linux client machine

I have NFS share mounted on CLIENT in /etc/fstab: SERVER:/share on /mnt/share type nfs (rw,users,noexec,nosuid,nodev,timeo=14,hard,intr,addr=1.2.3.4) Intensive use on client like copying a lot of ...
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94 views

Ubuntu server + Samba + PAM + Apple OpenDirectory

Due to various reasons, we are looking to migrate our file servers from OS X Server 10.9 over to a true Samba implementation running on Ubuntu 14.04LTS. We have Ubuntu up and running with Samba ...
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67 views

mysqld shuts down every 10 minutes

I have a very odd problem: mysqld shuts down every 10 minutes, without any errors, just like some process actually calls "shutdown" on it. I already checked cron, but couldn't find anything there. ...
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12 views

OwnCloud stored file as WEB start page

I collect video clips from security cameras in OC. Every 10 min scrip tlook to for new video files and if so, email is send to user who owns particular cameras set. Such mail contain links (one or ...
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31 views

Xen VM could not be installed

I have rented a server from Hetzner. I have installed Xen on Dom 0 - Centos 6.5. I couldn't create a Dom1 Centos 6.5 VM. The Error I see is 'Unable to retrieve 'the link for centos image' while ...
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34 views

Dovecot/Postfix mail server replies to [SYN] with [RST, ACK] when user attempts to connect (POP3). Likely iptables?

Currently I am trying to trouble shoot an e-mail server that will allow users to send e-mail, but not log in to the server (POP3) or receive e-mail using their Outlook clients. Previously this was ...
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46 views

Separate L2TP/IPsec VPNs with dynamic VLAN assignment

I am working on a Linux (Debian 7) VPN concentrator for different kinds of remote access. One of the offered protocols is L2TP/IPsec because of the client availability. I am using xl2tpd which in turn ...
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23 views

SFTP encountering Bad Message

I am uploading a file via sftp to a remote server. While on transfer, I got a message that says, "stalled". I killed the sftp running on my local. The problem is, I cannot delete the partially ...
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0answers
22 views

aws instance froze, how to find out what went wrong

So we have a instance on AWS that runs CouchDB which was down and not accessible until we rebooted the box (which took a long time). The instance is back up now and I am trying to figure out what ...
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0answers
32 views

Git/svn - keeping synced two repositories with different access rights

I've been advised by @PatrickQuirk to post this question here... There is just too much information online for me to understand and be able to get my own picture, so I gently ask the community to ...
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34 views

SNMP memory values do not match `free`

Compare this # free -m total used free shared buffers cached Mem: 72363 68035 4328 0 522 66294 -/+ buffers/cache: ...
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43 views

Server time won't remain set

So I've got a Linux machine running CentOS 6.5 and I've been trying to correct its timezone. I got it set once but for some reason it won't stay to what I set it as. The following steps I have ...
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21 views

Issue loading .profile

I am setting up a user profile for a specific application and I am getting an error that I have yet to encounter before. The error happens on with the loading of the .profile file, but the odd thing ...
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0answers
39 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 ...
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0answers
77 views

Load Balancing over multiple ISP connections

I have been trying to implement load balance and fail over on a linux machine having multiple interfaces. Currently I am using two ISP lines and I wish to split the network traffic such that both of ...
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0answers
61 views

task fstrim blocked for more than 120 seconds

I'm experiencing random crashes on my system. I've narrowed the problem to the fstrim program that's launched weekly by cron. In the console, I've got a set of blocked tasks among whigetch I find ...
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0answers
189 views

Setting up a bootable multi-device (RAID 1) using Linux Software RAID

I'm trying to setup a bootable software RAID that will contain the root filesystem and boot up Linux Mint Qiana. It will be used to run a few graphical monitoring applications in a small datacenter, ...
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94 views

Server RAID0: one hdd is more %busy then the others?

I'm testing 3 servers with RAID0 with 4 disks. During my test I noticed on all 3 servers that one of the hdd's is more %busy and has much higher averige IO wait (almost 4x higher then the other ...
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0answers
46 views

yum-complete-transaction in a crazy loop

I was trying to update a server that I have with yum update and it aborted because the server ran out of memory. I killed off a few processes that were not needed and ran yum-complete-transaction but ...
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0answers
24 views

Rename a GlusterFS Peer

I have a 2 peer GlusterFS system. It was initially created using simple hostnames file01 and file02. These hosts were added to /etc/hosts to make it work. Now we want to start using FQDN because we ...
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0answers
30 views

Centralize way to prevent interactive logins

I have an Ubuntu server that is used for two primary purposes for my students: To hold on to files that students need to temporarily upload for my assessment (ie: I give them an input image, and ...
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74 views

SSH hangs on remote command execution after prompting for password

I am able to execute remote commands as the root user, but not unprivileged user "admin": [user@jump01 ~]$ ssh admin@10.50.11.1 'ls' admin@10.50.1.1's password: ^CKilled by signal 2. [user@jump01 ...
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0answers
100 views

Creating redundant IPSec connections using OpenSwan

I have a linux (netkey) instance with openswan installed, the instance has two connection to the same IPSec peer that needs to act as redundant connections. both connections' properties are the same ...
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0answers
103 views

shorewall can'T start: UNTRACKED state requires Raw Table in your kernel and iptables

I'm trying setting up my firewall and installed and configured shorewall. Unfortunately I tried to directly configure iptables first, but this didn't work. When I start shorewall, I get this messages ...
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0answers
47 views

Printer on OS X not printing across VPN subnets

I have an interesting situation where I have a two servers that connect two subnets via a VPN. One side is 192.168.0.0/24 and the other is 192.168.1.0/24. Communications appear to be working okay. I ...
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0answers
141 views

LDAP authentication, pam_mkhomedir and NFS automounted homes

We currently have a setup (running on Ubuntu 12.04.5 LTS) with mixed LDAP/NIS authentication and automounted home directories from several servers (with the auto.home map distributed over NIS). ...
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91 views

How to force/fake linux eth0 in 'up' status even without cable connected?

One of my testing script is eth0 status related, when eth0 goes down(cable unplugged), the script exit, and i need to unplug and plug cable many times due to test needs. is there anyway can fake ...
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72 views

Naming convention for /var/lock/subsys on sysvinit with multiple pids

In this Tips and Tricks article from Red Hat, it is said: When a service is started through an init script, a file is touched in the /var/lock/subsys/ directory with the same name as the init ...
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84 views

Using my IPs on OVH server via GRE

I can't route my IPs into a OVH server, can you help me to find the problem? Mikrotik GRE IP: 192.168.55.10 OVH Server GRE IP: 192.168.55.20 GRE iface name: ali1_fr1-ovz1 IP to route from Mikrotik to ...
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0answers
40 views

Automatically add rules to iptables when an user logs in or logs out with ssh?

I'm looking for a solution to automatically add couple of rules to iptables when an user logs in and remove those rules when it logs out. I'd like to get somehow get the ip address of the user from ...