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

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-3
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8 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
11 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
0answers
22 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 ...
0
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0answers
16 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
vote
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
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1answer
9 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 ...
0
votes
0answers
13 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 ...
0
votes
2answers
28 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 ...
1
vote
2answers
23 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
16 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 ...
-2
votes
0answers
6 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
22 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
45 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 ...
0
votes
0answers
11 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: ...
-3
votes
0answers
16 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 ...
7
votes
1answer
214 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
40 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
0answers
14 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 ...
-4
votes
0answers
13 views

How to installing a build Ceph [on hold]

I insert my code to ceph project and I want to compile and install it on my server. I know command to build and install them but I don't know what I have to do first before make install , Because in ...
0
votes
0answers
11 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
10 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 ...
-5
votes
1answer
21 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
59 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. ...
-2
votes
0answers
17 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 ...
0
votes
0answers
25 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 ...
0
votes
1answer
26 views

Postgres /root": Permission denied

why on ubuntu 14.10 every time that i try to start the postgres on: sudo -p 'sudo password: ' -u postgres /usr/lib/postgresql/9.4/bin/initdb -D /mnt/postgresql/9.4/data show this: could not ...
0
votes
2answers
39 views

Linux's /etc/init.d - symlink, hard link, or actual file?

I have a Debian and an RPM package that requires a start/stop script to be added to the /etc/init.d directory. Recently, I was informed by a remote developer that "those in the know" know that "best ...
0
votes
0answers
11 views

keepalived VRRP_script not failing over

So I am running keepalived on two servers and I can't get it to failover to the other. Below I have my config for one of the servers. The only different between the two is the priority numbers master ...
1
vote
0answers
21 views

Public Key Pinning and subdomains [on hold]

Shortly I have intend to install new webserver and I'd like to secure users a little bit more. I already have domain, (virtual) server and everything else that matters when configuring a server. ...
-1
votes
0answers
28 views

error trying to install CentOS 7 and remove windows 8.1 [on hold]

I have a USB boot stick that I am trying to use to install CentOS 7 and also completely remove windows 8.1 from a computer. I pressed del to enter setup and then navigated to the boot options, and ...
0
votes
1answer
21 views

Unable to log into a rsyslog filter using logger [duplicate]

Ubuntu 64 14.04 comes with rsyslog (7) built-in. I've added test.conf to /etc/rsyslog.d with the following line: :syslogtag,isequal,"test" /var/log/test.log I then restart rsyslog and log ...
0
votes
0answers
10 views

autofs runs under root user and not as the local logged in user

I had described in this answer a solution how to use automount / autofs for mounting net drives with different credentials depending on the logged in user. To do that I can use ${HOME} like this: ABC ...
-2
votes
1answer
39 views

Linux check availability [on hold]

How can I do an infinite ping to a server, and when the server is down put the server IP in the server where i'm running the program? Is it possble with a while?
-3
votes
2answers
25 views

Child proc in highload

I need to know why this child proc is using 208% of my CPU. I think it would be a good idea to find the pathname of it. Do you have any idea how to find it? 4910 root 20 0 9691M 2006M 7924 R 208. ...
0
votes
0answers
26 views

(solved -> bug) forward arp packets as vlan tagged arp packets

How can i forward arp packets as vlan tagged arp packets? e.g. arp packet (no vlan tag) -> eth1 -> eth2.1 -> arp packet (with vlan tag) With the following setup, the outgoing arp packets (on eth2.1) ...
0
votes
2answers
52 views

Bash move and rename folders

I have a bunch of folders like that: Team A - Folder 01/ Team A - Folder 02/ Team B - 14-12-2003 - Folder XX/ Team B - 21-03-2008 - Folder YY/ ... With the passing time, this list have became very ...
-1
votes
1answer
35 views

How to I configure CentOS command sudo su with a password

I have disable accessibility on my CentOS server by using given username and password, I allow them to access server by using Public Key instead, but I noticed that every account can change to root ...
0
votes
0answers
23 views

What is means in tc “Unparsable filter ID ”2:“”

I wrote a shell script for limit upload speed by tc and cgroup. #!/bin/bash -x mkdir -p /cgroup/imagecenter mount -t cgroup -o net_cls image_net /cgroup/imagecenter/ mkdir -p ...
-4
votes
0answers
16 views

LEMP Setup on CentOS at DigitalOcean [on hold]

I'm following this tutorial. I got some issues start from step four: Configure Nginx to Process PHP Pages. After I typed this $ sudo vi /etc/nginx/conf.d/default.conf. I can't find server { listen ...
-3
votes
2answers
39 views

How Do I resize a partition? [on hold]

I have the following FIle system setup currently. I need as much room as i can get in ./home. root@Jm2:~# df -h Filesystem Size Used Avail Use% Mounted on /dev/md1 20G 7.6G 11G 42% ...
0
votes
1answer
21 views

PowerMTA Not starting

I have recently installed PowerMTA server on CentOS 6, every prerequisite was installed according to Document and License was entered in correctly configuration file was also correctly setup in ...
2
votes
3answers
64 views

Scaling beyond 65k open files (TCP connections)

I have a requirement for my Ubuntu 14.04.3 LTS server to have >65k clients connected to it via TCP. Although I have memory & cpu to spare I'm unable to get more than 65k clients to connect. I ...
0
votes
0answers
10 views

Forward port to virtual IP in namespace

So, I followed this guide to make a namespace where I can run my VPN: https://schnouki.net/posts/2014/12/12/openvpn-for-a-single-application-on-linux/ It works fine so far, but I have one problem. I ...
1
vote
0answers
15 views

linking a local windows git repository to the aws linux git server

I want to create a git server on my aws linux server so that whenever I want to update my website in the public_html I dont have to manually transfer files to the server, I want to make use of git, ...
-3
votes
1answer
39 views

Is it better to hire a system administrator or do it yourself? [on hold]

I previously asked a question on here asking the risks in hiring a sys admin to secure my server. I got some great answers, I appreciate them. What I want to know is, to eliminate the risks Should I ...
-3
votes
2answers
36 views

Modifiying a server securely [on hold]

I wanted to purchase a dedicated server to host my site. I am a newcomer to this and wanted to know if I hired someone to secure the server and SSH for me, will that put me at risk? Or is there an ...
2
votes
0answers
36 views

Creating a linux-based black box environment? [on hold]

This is a subject I've found very little on and while there are theory-based articles out there, I can't find anything with specifics. I also wasn't sure whether this should live on stack overflow or ...
-2
votes
2answers
31 views

Promiscuous mode not working with ubuntu and wireshark [on hold]

I am running Ubuntu Linux and have installed wireshark on it. I can see the incoming and outgoing traffic just fine. Now I want to see the traffic from other devices which are on my LAN. So, I did: ...
1
vote
1answer
10 views

bastille linux command line pass config file with answers

I have bastille for hardening and Im using it as follows /usr/sbin/bastille -c The above starts it in interactive mode Is it possible to provide bastille linux set of answers via a file on the ...