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

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10 views

safely restart / reload bind dns

I have a old bind dns server (linux centos5.5 with bind 9.3.6) with 2000+ zone files. Whenever any change is done in any file the dns is restarted. I guess a reload must be sufficient though. ...
0
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1answer
9 views

Start jar service on ports belong to Apache

I have been made a service for my Android Game. The service have socket connection, that connection is open on port 4444. My android App has connected with server by IP address e.g. 192.168.1.1:4444 ...
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1answer
10 views

BIND: How to refer requests to other DNS servers in different predefined networks [duplicate]

Let's say I have two independent networks net1.local and net2.local each of which is connected to a bigger network local through a router. Each of 3 networks have their own independent DNS server. ...
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0answers
12 views

Is there a standard for creating cloud based drive space?

I am looking to create a way to allow my business to have a cloud based server which has a large drive that we can all access via the internet. Is there an industry standard or best practice approach ...
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2answers
20 views

User created with useradd instead of adduser loads a wrong Prompt

I've designed my bash prompt like this \u@\h> When i now create the User example with adduser, my prompt looks like example@host> But when i create a User with useradd, my prompt looks like ...
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0answers
4 views

Linux: root filesystem via network (with authntication) [migrated]

I try to create a linux computer which loads its rootfilesystem from the network. This currently works with NFS, but unfortunately it is not very secure. The network is just a home network, which ...
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0answers
25 views

Server not finding files created on certain date

I'm getting this error on 4 .svg images when loading a page: Failed to load resource: the server responded with a status of 404 (Not Found) There are about 15 other .svg images located in the ...
0
votes
0answers
8 views

Samba 4 join active directory, good tutorial? [on hold]

I tried two separate tutorials found on the web about joining a Samba 4 to an Active Directory domain, but each time I cannot access the shares, neither the computer to browse for the public shares, ...
0
votes
1answer
25 views

Linux Software RAID10: Mysterious renaming /dev/md0 to /dev/md127: Why?

During the last two nights we had mysterious events on a server running Ubuntu Linux 12.04 LTS with a Linux mdadm software RAID10: DeviceDisappeared /dev/md0 NewArray /dev/md127 Both messages ...
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0answers
14 views

How to redirect traffic on specific port to another non-local machine using IP tables

I operate two virtual linux machines (server A and server B) (both running debian), but one of them (server B) does not have dedicated IP. This means, I was given a range of ports for use, that are ...
0
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1answer
10 views

How to config network bridge nic?

The network files in Fedora 22 server edition looks very different compared to those in F17, where I can find this howto. My aim is to have KVM guests to be accessible over ssh and http as if they ...
1
vote
1answer
17 views

Ansible: run different plays on the same host as different users

I want to manage two user accounts, which happen to be on the same host (mylaptop). I have a separate play for each of them. However, Ansible keeps executing both plays as the same user, despite ...
2
votes
2answers
186 views

Upgrade SSL/TLS/Openssl?

I have a requirement to upgrade SSL/TLS/OpenSSL. The server is RHEL 6 Enterprise. In that server I am going to remove apache, which has not been not in use for a long time. After uninstalling ...
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0answers
12 views

Hard Disk read/write latency calculations in linux

How do i calculate Disk read and write latency in Linux? Is it possible to do the calculation using /proc or /sys file system? else is it possible to get through iostat command ?. screenshot here
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votes
1answer
30 views

Linux secure file sharing without ssh login access

I'm looking for a way to make a directory on a linux system available for reading to other linux and windows clients. The share must require some authentication from the client and the passwords and ...
-1
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0answers
8 views

CirrOS server has ports filtered; its IP address pings but from a different IP address in the echo

nmap to a CirrOS server shows that ports 22 and 135 are filtered. On the CirrOS server, I can ssh to 127.0.0.1. I've noticed that pings to the CirrOS server return from an IP address different from ...
0
votes
2answers
59 views

Larger than 4GB file corrupted on Centos. How to extract?

I zipped a folder on centOS 5. It zipped up to around 4.1GB. Now i am trying to unzip it but it gives error. I have tried a number of options. First with using the unzip command it says then i ...
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0answers
7 views

Vulnerability assessment for JAVA based application

A organisation has hosted a web application which has been developed over java based platform. Administrator has hosted a application on Apache TOMCAT running over privateip and mapped it with some ...
1
vote
1answer
15 views

How can I set up sendmail to use CRAM-MD5 authentication?

I have sendmail running on a RedHat 7.1 machine. I want to configure it to authenticate using either PLAIN or CRAM-MD5. I have it working with PLAIN (so I know the client works, I have the ...
0
votes
1answer
12 views

What are the directories and files that I should keep in sync for a cluster server

I am currently wanting to set up new clusters. Each cluster is defined by its software installed, software settings, and its home folder files. I want only the above to be cloned and not things ...
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votes
2answers
22 views

Access Centos7 server through windows network for Nagios

We have a windows network setup at work. A new server was spun up that has Centos 7 on it for us to install Nagios to monitor some services. I need to be able to access the Centos server from a ...
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0answers
26 views

No volume groups found - CentOS

I have migrated a CentOS 5.11 server from VmWare to Hyper-V and when trying to boot the server. I'm getting the following error messages: "No volume groups found" ""VolumeGroup00" not found" and ...
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0answers
19 views

Monitor network using bandwidthd without dedicated machine

I'm setting up bandwidthd in order to be able to monitor who's eating our monthly cap. Here's my bandwidthd.conf without the comments: subnet 192.168.1.0/24 dev "wlan0" promiscuous true ...
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0answers
9 views

docker0 boot2docker network changing between restarts

I'm experiencing an issue where after restarting my boot2docker VM the docker0 network segment changes between 172.17.0.0/16 to 172.18.0.0/16 That is a problem since I have a DNS container running ...
0
votes
1answer
21 views

What are the benefits of configuring rsync with rsync shares vs. without?

I know there are two or more methods of working with rsync: The first one requires that rsync would be installed on the destination machine and then you can run something like that: rsync -avz file ...
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0answers
14 views

Easy way to monitor basic parameter of server [duplicate]

We have some 100 server and 6 database server and 4 application server. I wanted to monitor disk space, database space, database usage and application server e.g glassfish and web sphere stat. How can ...
1
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0answers
25 views

Postfix's received emails put in /var/mail/user/.Sent Messages

For some reason, emails that I receive on my Amazon Linux EC2 instance, running postfix and dovecot, are put in the directory /var/mail/<user>/.Sent\ Messages, instead of the expected ...
2
votes
1answer
34 views

Debian - No internet traffic, wget fails. Ping, DNS & telnet work

I have an internet connection issue with several computers on a KVM serer, which is also having the same issue. The internet connection on Windows guests works fine. This is happening on multiple ...
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0answers
22 views

After installing a new disk, can't use old mount points on linux

So, I'm stumped on this one. I have functionally two volume groups. vgold and vgnew, and I migrated the lvms from the old one to the new one (via rsync of the files to an external drive first, not ...
1
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1answer
9 views

How to configure a newer version of Supervisord to start on system boot in Ubuntu 12.02?

How do you configure a newer version of supervisor to start on system boot in Ubuntu? Some distributions simply lag behind in their repositories. When I use easy install (as recommended by default on ...
0
votes
1answer
10 views

Is it possible to specify multiple upstream ssh proxys for openssh in linux

Is it possible to configure openssh to use a specific upstream ssh server when connecting to a specific IP range in order to have a single ssh server that client connect through to get to multiple IP ...
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0answers
17 views

cannot start iptables on opensuse linux

i am trying to run the iptables service on opensuse linux , but unforunately its failing to activate and systemctl status message shows that its failing to find the /etc/iptables.rules file , i also ...
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4answers
59 views

Can I detect hardware RAID infromation from inside Linux?

When I'm inside of Linux, I can get the following information from lsblk (irrelevant drives removed from output): NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sda 8:0 0 298G 0 disk sdb ...
2
votes
2answers
30 views

Slow writes for VM in Xen?

I have a server running Xen and a couple of VMs. I'm trying to set up a RAID array that's dedicated to one of the VMs in particular, which will be used for various storage-intensive purposes. ...
1
vote
2answers
32 views

BIND v9.9.7, Views and includes

I have recently begun upgrading to bind 9.9.7 and have run into an unfortunate stumbling block with bind. I setup views in my environment to allow me to differentiate 4 of my zones with different IP ...
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votes
0answers
7 views

Embedded Debian Wheezy as MTP Device [on hold]

My development environment: Board: Beagle Bone Black OS: Debian Wheezy Question: is there anyway to let my Beagle-Bone act as a MTP-Device once it is connected to a PC? like all android devices do! ...
0
votes
1answer
24 views

Bind: Disabling DNS forwarder won't block resolving out-of-network names

I have disabled my local network DNS forwarder. But somehow internet names are still get resolved. Any idea how to stop this from happening?
0
votes
1answer
49 views

How to exclude directories from tar in this script?

Answering my own question yesterday, I wrote a bash script which archives all directories within a defined directory into their own separate archive files. I have also defined a variable for a file ...
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0answers
13 views

LSI SAS1068E (aka LSI SAS 3442E-R) bandwidth

Recently I connected LSI SAS 3442E-R and two HP SAS 600GB 10k HDD. My motherboard is AsRock Z97 Extreme6. Disk are configured as JBOD, no raid. Linux lspci shows: 0b:00.0 SCSI storage controller: ...
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votes
0answers
17 views

How to forward firefox graphics from remote to local system? [on hold]

I have installed CentOS7 in virtualbox through vagrant. Both guest and host operating system is CentOS7. Guest operating system is minimum installation of centos7 with no graphics. On both system I ...
8
votes
1answer
244 views

How can I tell if the server supports hot-swapping drives?

I recently purchased a used server (the type that fits into a rack, rather than a free-standing machine). One nice feature, is rather than having to open up the cover and unscrew the harddrives, this ...
1
vote
0answers
43 views

Can't connect to (or write to) a socket file, despite being owner?

I am working on Debian Jessie with Django 1.8, trying to set up Gunicorn to run my Django site. I have made a user called opuser, and made this user the owner of the gunicorn.sock file and of the ...
0
votes
1answer
19 views

ProFTPD server - SFTP only for 1 user

We have an FTP server setup using ProFTPD and CentOS, ProFTPD has been setup with FTP, FTPS, FTPES and SFTP access. We have a user who only wants to allow access to their account via SFTP. Is there ...
0
votes
0answers
13 views

PHP Cannot Write to Directory the Process User Owns (Fedora LEMP)

I am having a permission issue with PHP running on a Fedora 22 LEMP install. PHP cannot write to a directory owned by user 'nginx' in the group 'nginx' with permissions of '744'. The PHP FPM socket ...
0
votes
1answer
12 views

Log in to a single LUN of a target with iscsiadm (open-iscsi)?

Is it possible to connect to only a single LUN of an iscsi target when using iscsiadm? I have a target like "iqn.0000-00.iscsi.foo:bar" this target has 1000 LUN's. If I do iscsiadm -m node -l -T ...
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votes
1answer
22 views

Webdomain on my static public IP [on hold]

I want to create a web server using Ubuntu Server, so I have installed Apache php Sql ecc. Now I want to permit to visit my site on internet and I have token a static public Ip, but I want to have ...
1
vote
1answer
63 views

gzip select directories into separate archives

How would I go about compressing a list of directories into separate archives? I have read solutions that just archive all the directories within a given dir, but there are some I want to skip. ...
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0answers
18 views

How to block extension files in pfsense without using squid and squid guard? [on hold]

I want to block all extensions like tar,gz,exe in PFsense without using squid and squid guard.
1
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0answers
12 views

Why does ausearch skip entries?

I am trying to use the ausearch tool search my auditd logs for specific entries. The problem is that most of the entries in audit.log appear to be unsearchable. Searching with matching parameters ...
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0answers
26 views

CentOS 6.7 VM missing “Committed_AS” line in /proc/meminfo

The system is a virtual machine, and cat /proc/meminfo is missing the "Committed_AS" line which causes the some application processes to fail. [root@node1 ~]# more /etc/centos-release CentOS ...