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

learn more… | top users | synonyms (1)

2
votes
0answers
122 views

difference between success and failed event in auditd/aureport

The aureport command has two options that limit the list of displayed events to those that were successful and those that failed. Per the man page: --failed Only select failed events ...
2
votes
0answers
447 views

Bind 9.3 cache-only mode with authoritative name server

I have bind 9.3 up and running which is designed as a cache-only to get queries from other resources and then cache them to serve clients internally, now I setup my own zone because this is also a web ...
2
votes
0answers
208 views

Xen and Turbo Boost

Running the Debian Squeeze default Xen, I am unable to get any of the CPU frequency scaling stuff going. As soon as I revert to the standard kernel I get it. Digging through the internet it seems ...
2
votes
0answers
4k views

TCP Keepalive and firewall killing idle sessions

In a customer site, the network team added a firewall between the client and the server. This is causing idle connections to get disconnected after about 40 minutes of idle time. The network people ...
2
votes
0answers
196 views

how to measure IP bandwidth in pass through mode in linux?

I want to measure the IP bandwidth in pass through mode. Please find the attached picture for configuration and my question also. If there is no solution with OpenWRT, I need any alternative ...
2
votes
0answers
325 views

Ubuntu: How to force default ACLs to take effect for newly created files/dirs?

I've created the following ACLs for a directory: # file: . # owner: www-data # group: root user::rwx user:www-data:rwx user:deploy:rwx group::--- mask::rwx other::--- default:user::rwx ...
2
votes
0answers
278 views

What ZFS file structure to use for zfs-root linux system?

In ZFS, you can build your filesystem hiearchy to include different fs-attributes per filesystem. For insance, compression in one area, no-exec/suid in others, noatime. For example, a HOWTO for ...
2
votes
0answers
421 views

NFS inherit permissions from shared directory - Mac OS client

Short question: Is there a way to have files on a NFS share on a Mac OS client inherit the permissions of the shared directory? Scenario: Ubuntu 12.04 server Mac 10.7.4 client shared directory has ...
2
votes
0answers
6k views

ksoftirqd process overloads CPU with high-bandwidth and multiple network connections

I got a 10GBit Server with proxmox 2.1 installed. There's an OpenVZ container running with Ubuntu 10.04 64bit. I can get 200-300MB/sec with wget from data-center internal servers (-O /dev/null) which ...
2
votes
0answers
2k views

ProFTPd/FTPS issue: unable to accept TLS connection: received EOF that violates protocol

It took some time while I tried to find solution over the net. Nothing helped. The story: I have Ubuntu 10.10 (Amazon EC2 instance). ProFTPD Version 1.3.2e (latest via apt-get). I changed nothing on ...
2
votes
0answers
222 views

How to make background flushing more aggressive

I've got a system that is doing a continuous steady stream of writes to GFS2 filesystems, and what happens is that the cache builds up to vm.dirty_ratio and then load skyrockets during a synchronous ...
2
votes
0answers
339 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
votes
0answers
618 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 ...
2
votes
0answers
97 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
votes
0answers
222 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
votes
0answers
377 views

Restart linux kernel NFS lockd

Hi is there a way to restart the lockd kernel thread (NFS lock manager)? There were some file locking requests which went wrong and since then it consumes about 50% of CPU. The processes requiring ...
2
votes
0answers
622 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. ...
2
votes
0answers
210 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
votes
0answers
595 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. ...
2
votes
0answers
316 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
votes
0answers
300 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 ...
1
vote
0answers
10 views

Linux (Ubuntu 12.04). Setup OpenSSL and osslsigncode

I'm a beginner in using Linux. I have already installed OpenSSL 1.0.1 and after installing osslsigncode I have: osslsigncode -v >osslsigncode 1.5.1, using: OpenSSL 1.0.1 14 Mar 2012 ...
1
vote
0answers
17 views

detecting whether GPUs are accessible before running nvidia-smi during boot to create dev files

In the past, I've successfully configured Ubuntu systems containing NVIDIA GPUs to launch nvidia-smi in the background from within /etc/rc.local during the system boot to create the requisite ...
1
vote
0answers
11 views

php generated css no output, net::ERR_INCOMPLETE_CHUNKED_ENCODING

I am running apache on an ubuntu installation. Several webapps are running on the same server. I installed a new app, which required the pdo-sqlite extension to be installed. Now my server is ...
1
vote
0answers
12 views

Process-wide VPN connection via openconnect

I'm using openconnect to connect to a remote endpoint and SSH onto the machine inside the remote network. The problem is, when I do create the connection, the machine I do it on is unresponsive for ...
1
vote
0answers
29 views

curl error 51 - of multiple requesting machines, only one has the issue

I have an SSL cURL request that fails from a single machine with the following error: curl: (51) SSL peer certificate or SSH remote key was not OK This error seems to have popped up overnight, and ...
1
vote
0answers
14 views

Hadoop namenode port getting blocked

I have installed 7 VM instances of Ubuntu 14.04 LTS servers. First instance runs the namenode service and all other 6 nodes run datanode service.I think my NameNode is getting crashed or blocked due ...
1
vote
0answers
41 views

Trouble setting up a transparent proxy

I have been trying without success to setup a transparent proxy on a router like computer. Most examples that I have found don't have the gateway and proxy on the same computer, so I may be looking at ...
1
vote
0answers
26 views

PCI-E with mPCI-E Sandisk won't boot

Configuring a 'new to me' Dell R610 with 6 15K SAS drives, each set paired up into a RAID 1 and then a Sandisk 256GB mPCI-E ...
1
vote
0answers
28 views

Not able to set memory limit on containers in docker

I am using ubuntu 14.04 with latest docker. No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 14.04.1 LTS Release: 14.04 3.18.5-x86_64-linode52 kernel But when i ...
1
vote
0answers
15 views

corosync is not in sync

Could you please help out show me how to form a cluster? corosync & pacemaker are used. two nodes rac0 ip 192.168.0.140 & rac1 ip 192.168.0.142 They are not shown in each other. They are ...
1
vote
0answers
19 views

X3250 Server: stuck at firmware screen

The server is initialize, then it is stuck at the IBM System X Server Firmware screen (before F1, F12 appears, etc). You can see in the attached image. ...
1
vote
0answers
27 views

Gateway/Modem overload when running a web spider

Problem: All other devices on the network experience serious lag and timed out web pages, email, chat dropping, etc while this is running. This is a cross post from stackoverflow, I may have used the ...
1
vote
0answers
7 views

Re-install motd after /motd-update directory has been cleaned

I have the following problem. I'm running Kubuntu 14.04 and I deleted the contents of /etc/motd-update folder. I want to simply add a custom ssh custom login message, I don't need the other files. ...
1
vote
0answers
60 views

Squid intercept proxy stuck with forwarding loop

I'm trying to set up a debugging proxy using Squid, mainly to test our own client communications library for various proxy types (one possibility with our client, is to connect to an external ...
1
vote
0answers
48 views

Restrict I/O Write usage using cgroups

I am trying to restrict I/O write usage on my server using cgroups. Here is my partition table info: major minor #blocks name 8 0 10485760 sda 8 1 9437184 sda1 8 ...
1
vote
0answers
21 views

Stop Outbound SYN Scan

Hello I run a VPN company, and recently my host has been sending me these complaints that are likely coming from a user. I am not sure how to identify the user, if I could just do that I wouldn't ...
1
vote
0answers
40 views

Trying to auto-register a Nagios NSCA client

I am setting up Nagios monitoring using NSCA to report in from monitored hosts and all monitoring is using passive checks. Currently the monitored hosts each have a configuration file in the nagios ...
1
vote
0answers
90 views

End of script output before headers: php5

I've inherited the sysadmin role on a server that's running a wordpress website on top of Apache 2.4/Debian. It almost works, but it is issuing "500 internal server error" from time to time. In my ...
1
vote
0answers
23 views

Why some apt-get and aptitude installations remove some programs?

I wanted to install wireshark, and I went to Installing wireshark So I just typed on terminal aptitude install wireshark and before it install wireshark, it removed 251 programs, and I don't have ...
1
vote
0answers
125 views

Powershell execute Queries using SQLPLUS

I have a RHEL server with Oracle 10G installed. I need to write a powershell script to query my database and get the output. I have imported Posh-SSH module and am able to connect to my RHEL server ...
1
vote
0answers
26 views

ubuntu xl2tp ppp0 not properly handling the DF flag (Packet Corrupt) while sending packages > defined MTU

While trying to setup an Ubuntu Linux server as a client to an l2tp/IPSEC server, I notice inconsistencies while trying to send data. The tunnel/VPN establish the connection / handshake properly and ...
1
vote
0answers
35 views

Rsync does not delete destination files [rsync protocol / module]

An automatic backup script executes the following rsync command to sync a local directory tree with a remote one: env RSYNC_PASSWORD=$rsync_password rsync -aqrxz --delete --timeout=30 \ ...
1
vote
0answers
176 views

Permission denied to resize filesystem

Im attempting to resize a filesystem on a mulipathed volume that I've grown, rescanned all the disks, and resized the multipath map. # resize2fs /dev/mapper/my_vol resize2fs 1.43-WIP (20-Jun-2013) ...
1
vote
0answers
44 views

why cisco VPNC work on the second time each time and not on the first time

I use the vpnc ( cisco VPN that installed on linux red-hat 6.X ) and the vpnc.conf file look like this more /etc/vpnc.conf ## generated by pcf2vpnc IPSec ID Comvwde IPSec gateway 217.118.6.7 ...
1
vote
0answers
40 views

Find out what processes are forking

My server seems to be a bit slow, so I decided to install munin to see what is happening. One statistic that stands out is that the server is forking 50 times a second, which seems a little excessive ...
1
vote
0answers
18 views

Is it possible to add support for additional OIDs in SNMPD (RHEL)

I am trying to have my monitor poll the number of ESTABLISHED TCP sessions on a Linux server that is running snmpd. The OID information I am trying to poll can be found Here . The OID is ...
1
vote
0answers
42 views

Issue with port range of passive FTPS using VSFTPD

First of all, I am aware that there are many similar questions to this one out there, however the common solution to those problems is the source of my problem; therefore I am asking my own question. ...
1
vote
0answers
60 views

finding if my linux server is the bottleneck

I have a redhat linux 6.x server being used for writing of backup images by NetBackup before being dedup to tape library. currently, I have at least 20 servers writing to it every time their backup ...
1
vote
0answers
43 views

Syslog connection to Logstash not resetting

We have a setup with one Logstash server (1.4.2, using embedded Elasticsearch) to receive logs from a number of other clients (via TCP and from their rsyslogd instances). One issue that now happens ...