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

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57 views

Postfix + Dovecot fatal: no SASL authentication mechanisms

When I try to login via telnet I am getting kicked out immediately: telnet localhost 25 Trying ::1... Connected to localhost.localdomain. Escape character is '^]'. Connection closed by foreign host. ...
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11 views

Create a top Bond (ALB) on 2 lower Bond (LACP)

Is it possible to create a BOND over a BOND? or this will cause some networking issue? Why do I need this setup? I have 2 switch that support LACP but not distributed LACP! My Server has 4 ethernet ...
0
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1answer
20 views

What rules do I need to remote desktop to a virtual machine where the host has iptables running?

I am attempting to remote desktop to a virtual Ubuntu install (headless on VirtualBox) that resides on a Linux host (Centos 6.6). I can reach it with no issue if I turn iptables off. I feel like I ...
0
votes
2answers
59 views

nginx redirect all http to https with one exception

I would like to redirect all HTTP traffic to HTTPS, with one exception. Anything with /preview/ in the URL should be served via HTTP. I have tried with below configuration, but it keeps telling me I ...
1
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0answers
37 views

Wrong filename encoding/decoding when downloading recursively with wget

I'm downloading files from a remote directory recursively using wget and whoever created the folders and files, used special characters such as è or Ó, when I download a single specificating the full ...
0
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2answers
45 views

Common Name does not match Server Name - SSL Certificate

I recently purchased an SSL certificate. I've got www.site.com.key, www.site.com.csr, intermedia.pem, www.site.com.crt all set up in my /etc/ssl/localcerts folder. When I open my browser I get the ...
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0answers
9 views

Required hardware resources for a webserver [duplicate]

I am going to run an online store that is estimated to reach 300-500 concurrent users. The application is based on Yii framework. Please tell me the hardware required for running this store ...
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0answers
41 views

How to parse and graph sar/sysstat

The sar binary from the sysstat package returns a huge set of useful metrics, that are already pre-configured and sitting on the system waiting to be used. I would like to push them to statsd, so that ...
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0answers
31 views

Linux traffic shaping for multiple clients with tc

I need to divide bandwidth between several clients connected through IPSEC. I found this article: ...
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1answer
40 views

Why do my PHP files show as text in browsers?

Long story short, my PHP files show as text in browsers rather than running the PHP script. I am aware that there are questions similar to this but none answer my question. I'm lost. I have an Apache ...
-1
votes
1answer
28 views

Expand linux memory to disk [closed]

I know you can create RAM Disks but is there a way to turn disk space from say a USB drive to RAM? I have a small router based device with SSH and I would like to install a side app on it. The ...
1
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1answer
57 views

Best way to show architecture of a specified file system?

Admitting a filesystem is installed in ~/FS/ (which is its root), how can I check its architecture without chroot? I tried with dpkg --root=~/FS/ --print-architecture but it still prints me the ...
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2answers
31 views

OpenVPN failover

In my company we have two offices in two totally different locations. A is the main office, and B is the secondary. There is a VPN server at A office, and every computer access the A network via this ...
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0answers
26 views

Debian Wheezy: unmet dependencies when starting program

I am trying to run a program and it tells me it needs the packages: libgl1-mesa-dri:i386, libgl1-mesa-glx:i386, libc6:i386 After that, i get this error message: The following packages have unmet ...
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0answers
97 views

What causes the Linux neighbour table confirmation counter to be reset

Given three linux hosts on the same broadcast domain, the sender constantly pings an IP bound to receiver1. When moving the IP address from receiver1 to receiver2 it takes a quite long time for the ...
1
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0answers
21 views

IPTables, route specific port through VPN

I'm running my own mail server at home on a dynamic IP. Dynamic IPs are often blacklisted, so I currently send out mails through my provider's relay. I want to change that to sending mail directly, ...
2
votes
1answer
42 views

Simulate 2 clusters in the same network

I have 4 pc´s and another pc, which will act as a proxy, all being in the same network: 172.16.96.0/20 . I can ping between each other. But, I want to separate them into two groups. That is: pc1 is ...
0
votes
1answer
70 views

Create file system on multipath volume

I'm completely new to linux admin and file system. Recently we acquired an HP MSA P2000 san. I've setup the disk into a vdisk and created 3 volumes on it. On Centos 7, I've also setup the multipath ...
0
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1answer
44 views

zip of files with extended attributes

I need to archive and compress a large number of files but some of those files may have extended attributes whose content I don't want to lose. My understanding is that zip doesn't do that. Is there ...
0
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2answers
29 views

Exim - password disclosure by world-readable exim.conf - is that necessary?

I saw /etc/exim.conf is world-readable. The issue with this is to configure Exim to use an SMTP service like Sendgrid to route all outgoing email, you put your username and password into that file, ...
3
votes
1answer
46 views

Dynamically Restrict What CPU's a new process runs

So, I've looked briefly at cgroups and numactl, but neither appears, based on the information i have found, to be quite what I need. We use a piece of software, "fast-X", For our users to login to ...
0
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0answers
17 views

Setting up routes for openstack

Im trying to make an openstack deployment following this guide OPenStack Juno Guide. I have a linux server which is configured as a Nat, with 2NIC's. I used this script on section 4.5 Nat.sh. My ...
0
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2answers
42 views

rsync - How can I exclude from all instances of a file while using relative paths for each file?

I am coding a deployment script that uses rsync to sync cloned repository files with a website target directory. I am trying to allow my users the ability to place a .exclude file anywhere in their ...
0
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2answers
53 views

ps aux shows only processes of the current user

On one of my servers running Debian 7.8, when I run ps aux, I only see processes belonging to the current user. If I check the permissions with sudo ls -al /proc/, procesess run by root have theses ...
0
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3answers
54 views

Multiple servers Rsync into one NAS simultaneaus

Scenario: 1 NAS at our main office (Synology Cubestation CS407) 20 remote servers in various physical retail stores (1 server per store) Network between HQ and stores are in an MPLS/VPN. I have ...
1
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1answer
30 views

How to enable OCSP Stapling via http proxy?

I'd like to utilize OCSP stapling for SSL certs on my Linux webservers running Apache httpd and Nginx. Both Nginx and Apache however per default do want to directly access the OCSP responder. ...
0
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1answer
44 views

NGINX gzip_static not working

I have the following conf on nginx: location ~* ^/assets/ { add_header Access-Control-Allow-Headers content-type; add_header Access-Control-Allow-Origin *; add_header Cache-Control ...
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2answers
83 views

The same IP on multiple interfaces

Hello networking gurus, I've got a Linux (kernel 3.14) server which acts as a TFTP, NFS and HTTP server for a farm of consumer electronics devices (set-top boxes - STBs). The devices use TFTP to boot ...
0
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1answer
36 views

How can I download a complete image of my DO VPS to an image for a VM over SSH?

There isn't a way to download a complete image from Digital Ocean VPS hosting through their web UI. How can I download an entire image of the VPS that I can use locally on a VM or upload to another ...
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0answers
15 views

Forwarding Traffic from an PPTP Server to Another Server

I'm facing a problem here. I have 2 servers. Server 1 is a pptp server and server 2 is another without pptp service. I want to forward some of the traffic from server 1 to server 2 through a tunnel ...
0
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1answer
28 views

Send user level messages to syslog

I currently have syslog.conf like so to send INFO logs to /var/log/messages *.info;mail.none;authpriv.none; /var/log/messages; I have an application that uses python libraries LOG_USER facility to ...
0
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3answers
66 views

how to find proces which is pinging localhost

How can you find the process issuing ping to localhost? While it is not script, where the ping command can be simply grep from process table. I have used wireshark, but it is of no help to find out ...
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0answers
10 views

migrate xen server to new HDD

I have a Xen Server with multiple VMs that are mirrored with DRBD to a Backup Server, and it's running out of space. I want to migrate it to a bigger Harddisk, but I'm not sure about how to go about ...
0
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1answer
25 views

RTNETLINK answers: Invalid argument while specifying packet loss by tc command

I am trying to specify packet loss by tc command on interface (port) 1 of switch part of network I have created using mininet : sudo tc qdisc change dev s1-eth1 root netem loss 0.1% but gettring ...
0
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1answer
50 views

What is the best method of installing programs into a chroot / jail?

On a Debian based system... I have created a minimal chroot/jail using a script similar to the one at https://github.com/pmenhart/make_chroot_jail/blob/master/make_chroot_jail.sh with the goal of ...
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0answers
34 views

How do I enable opcache php 5.6?

I added the zend_extension=opcache_location line to php.ini. However when I ran php -m it says that the Zend framework too new for the extension to run on. So I tried to download the latest one ...
0
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1answer
20 views

Authenticating users in OpenLDAP from multiple OUs

I am new to openLDAP and trying to figure out the best way to layout my DIT. The problem I'm running into is many of my applications want to use a specific baseDN in which to look in for ...
2
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0answers
27 views

Security concerns w/ physical vs virtual network gateways [closed]

I am in the process of setting up a private network that uses a gateway system for access to certain services on systems behind the network, e.g. ssh, ftp. I have some experience using virtualized ...
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0answers
15 views

How to get the size of a folder included offline blocks

I have a Quantum Stornext LTO tape managed file system. When I make a "list -lsa" if I get "0" at beginning of lime it means file size is "12403039808" but size on disk is "0": 0 -rw-r--r-- 1 60001 ...
2
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0answers
25 views

NGINX Worker Process, Burst Read Speed to only 1918kb/s

I am running an NGINX/1.8 server on Centos6.6 with multiple worker_processes, however while observing iotop I notice they burst up to 1918kb/s Read speed and rarely if at all pass that limit. I want ...
1
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1answer
35 views

Docker cannot access volumes

I've installed a fresh Fedora Server 22. During the setup I selected the option to pre-install Docker. I have activated Docker using Cockpit and installed a new container on the command line: # ...
2
votes
1answer
34 views

Postfix - rate limit outgoing concurrent connections to one machine/ip

I need to limit postfix outgoing connections for specific mailservers, but it seems to me that posfix's limiting is based on domains? What if there is one mailserver for more domains? I tried to find ...
-4
votes
1answer
34 views

what is the plug-in for Firefox in order to access the HP blade center [closed]

I work with HP_blade center machine , Type - C7000 Enclosure G3 In the HP blade center I have couple of HW machines with Linux red-hat OS I have successfully access to the HP integrated management ...
1
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0answers
24 views

how to divert incoming all tcp packets at eth0 to socks proxy and to eth1 of same host?

I have a three ubuntu linux hosts. host 1,host 2 and host 3. I want to pass data from host 1 to host 3 via host 2. But specifically I want to pass all incoming traffic of host 2 to socks proxy then to ...
0
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2answers
35 views

Creative way to shrink a live ext4 filesystem from cloud provider?

When buying droplets, as DigitalOcean calls their cloud VM's, they are always configured with one large ext4 partition. I have an app that needs an LVM partition, so I need a creative way to shrink ...
0
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47 views

The RAID 1 Time machine

Last night my server crashed, after reboot I have found it has a disk failure The configuration is 2 x 500GB sata on Centos 6 sda3/sdb3 is software RAID1 sda1/sdb1 = ext3 for / sda2/sdb2 = swap ...
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29 views

How to serve different websites from different directory locations on one domain in nginx?

I am trying to serve 3 websites by directory base in one domain ( www.abc.com, www.abc.com/vimb, www.abc.com/mail ). I tried these setting, but doesnt working for me. I have only a basic knowledge ...
1
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1answer
25 views

Kickstart not working

I'm trying to create a kickstart to automate the installation procedure but when the installation ends and I check to see the result nothing happened. I'm trying to debug it by putting read statements ...
0
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0answers
17 views

How to find which program invoke iptables command [duplicate]

My SUSE Linux server always add an iptables rule that deny itself automatic, but I do not know which program added it. So how to find which program invoke iptables command or how to find which program ...
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42 views

7Zip extraction on linux is so slow

Extracting 7zip with many small files on linux xfs, extraction speed is so slow. My Test System Environment. System1 : 2vCore/4GB CentOS 6.5 64bit guest on XenServer. System2 : 2vCore/4GB Windows ...