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

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how to meter an SSH network usage?

It may be a simple question, but how can I see how much bandwidth an SSH connection, in Unix and Linux, has consumed since the login time until the SSH session is terminated (logged out)? Thanks, ...
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17 views

3ware array limited to 6TB in linux

I have a server with a 9650SE-24M8 in it. which has a 7x2TB drive RAID5 array. tw-cli shows the following: Unit UnitType Status %RCmpl %V/I/M Stripe Size(GB) Cache AVrfy ...
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0answers
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How to restore redmine on an ubuntu server after a dist-upgrade?

I just became a new admin on a server (ubuntu-server virtual machine) that host redmine on apache2 and subversion in my company. I discovered that the OS is Ubuntu Raring 13.04 that is out of date ...
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0answers
16 views

Linux domain name and FQDN [on hold]

I am beginner in Linux and Networks. My question is very weird I know, but I could not find answers on internet. Okay, so I want to send e-mail from my laptop to my gmail account. I am using Postfix ...
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0answers
11 views

How to setup Linux DNS server for Azure VMs in virtual network?

I'm trying to use Linux Bind9 to set up a DNS server for my Azure VMs in virtual network. I got one web server and one mail server. My goal is making GoDaddy connect to my own DNS server, and redirect ...
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0answers
17 views

Web server opens old index file in a strange way

PC: Old desktop PC, OS: Ubuntu LTS (latest), Web Server: Using Apache (latest), FTP: Gadmin PROFTPD, DNS: Using NOIP, Also using the NOIP dynamic update client, in my var/www/html I kept an ...
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0answers
7 views

openssl 1.0.1x Red Hat make errors - ec_asn1.o - ec_asn1.c:201: error: expected expression before 'X9_62_PENTANOMIAL' [migrated]

I am trying to install a separate version of openssl 1.0.1k to red hat. I tried on Centos first with no real issues. Before getting to this error I did the following: yum install -y libxml2 ...
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0answers
22 views

which email software do I need to install [on hold]

I am in the process of building an event management system. Part of the system is going to be sending emails. What should I use to send emails and would give me proper control and monitoring ...
1
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1answer
34 views

Limit su attempts

Is there a way to limit the number of su attempts from a user? For example, malicious user gets into a user login that has su access. Repeatedly runs su to try to gain superuser access. This ...
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2answers
12 views

Creating a log file inside a script works when manually run, but not when run through cron

I'm using Percona's Xtrabackup tools to back up a database nightly. I wrote a wrapper script to keep the proper number of backups around, write the output to a log file, and email the log file if the ...
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0answers
23 views

As a user with a home server, is it particularly bad or dangerous to open port 22 to my server? [migrated]

I have a CentOS home server that I use for various things, which sits on my home network behind my router. Normally when I want to do something remotely I will VPN in (my router has a built-in OpenVPN ...
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0answers
10 views

Using RTC to synchronize ntpd when offline

I need a stable configuration, presumably using ntpd, to keep system clock as precise as possible. Background: I have several embedded devices (arm9) running linux (currently: 3.16.1 / debian 7.2) ...
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0answers
12 views

Linux FSTAB error mounting corrupted SD card

i've problem. I've a linux embedded system with an Sd Card that i mount at startup using fstab. This is a commercial produt of my company, so i can't know in advance if i've a bad sd card. # ...
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1answer
14 views

Nginx - opens the 1st project when a non existing server name is typed

I have an nginx server running that has multiple projects inside the sites-enabled. The problem comes when trying to access and nonexistent project url, nginx will render the 1st available. Example, ...
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0answers
12 views

vim - “Press ENTER or type command to continue” right after loading only? [migrated]

Recently my vim has developed the habit of displaying Press ENTER or type command to continue the first time I do certain things right after I open it. For example, if I'm at my shell prompt and type ...
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1answer
33 views

How to check whether MOD drive is working in Linux based system [on hold]

I have an issue with the Linux based computer which belongs to Hitachi MRI Medical Equipment. We replaced the MOD drive (not CD or DVD) which was used to read MOD disks. After replacing the Drive I am ...
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1answer
32 views

What's a good choice for a general-purpose “non-advanced” filesystem with Linux R/W and Windows/BSD R/O support?

I'd like advice and recomendations as to what filesystem would be ideal for me to use for a 320GB HDD that will replace what appears to be an aging/failing 250GB one. Ideally, I'd like something I ...
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0answers
8 views

How to install oddjob-mkhomedir on AMI box using command line

I'm trying to install oddjob-mkhomedir and it comes back with no package available nothing to do. I used sudo yum install oddjob-mkhomedir so I'm assuming the repository is not available. My ...
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2answers
34 views

Linux program used to gather installed packages, processes, listening ports, etc.?

It's hard to Google this because it seems like everyone and their kid sister has written a script to gather system stats! I once saw a mature program written that is used to gather system stats like ...
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1answer
12 views

550 error after setting permissions on folder

I'm running a Centos6 VPS with Plesk 11. I am unable to access a folder using FTP after changing the permissions to 666 using chmod. I can create the folder using SSH and can then enter the folder by ...
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0answers
15 views

VPN server with mitmproxy

I have a mitmproxy script I want to run on all incoming VPN HTTP/HTTPS traffic, however, I am not sure how to achieve this. Is there a linux VPN daemon that allows me to redirect traffic to a ...
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1answer
25 views

Linux glibc versions 2.18 and older - vulnerability

Server: Red Hat Enterprise Linux Server release 5.9 (Tikanga) I came to know that Linux GNU C Library (glibc) versions prior to 2.18 are vulnerable to remote code execution via a vulnerability in the ...
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1answer
9 views

Mounting fails with fstab

I am trying to create a mount point that remains persistent on reboot by adding the following line into /etc/fstab /ownCloud/admin/files/Website\ Backups/ /home/example/Backups none bind 0 0 This is ...
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1answer
22 views

Running multiple ubuntu (or other distro) inside Docker containers on CoreOS, is this efficient?

From what I have read I believe CoreOS to be a bare-bones Linux distribution which essentially facilitates running Docker containers that contain any applications or services that you require. From ...
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Destination host is unreachable

Points to Note I am installing cloudera 4.6.0 using docker in pseudo distributed mode. I have created two docker containers. One is for hadoop and another is for flume. I linked two containers as ...
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0answers
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Replacing DevilLinux firewall [on hold]

We are currently running an x86 firewall using a DevilLinux distribution that starts from USB pendrive (no HDD). There are basically an iptables script and an openvpn server running on the machine. ...
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0answers
20 views

How can I make the most of my non-server hardware with server software installed? [on hold]

I have a standard computer device running UBUNTU 14.04 server. I'm using it for testing but I'll need to expose my work soon enough. I have other machines laying around here - some strong, some not as ...
2
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1answer
27 views

How to install openssl1.0.1 alongside the the default system openssl? (Centos/redhat)

I was tasked to setup openssl alongside the default version installed on the system. I want to know how I can set this up? I would like to point apache to use the portable version of openssl (I am ...
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3answers
26 views

Server login fail

When I login in my server using ssh, it shows me a message with the number of failed logins since the last sucessfull login. Currently I have this: Last failed login: Wed Jan 28 17:54:17 EST 2015 ...
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3answers
82 views

Server is sending spam every 5 minutes - can't find task/cron causing this [duplicate]

A linux server I manage is sending out hundreds of spam messages from a specific user account every 5 minutes. I found, within the user's account (which runs Wordpress), a couple of PHP exploit ...
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1answer
28 views

Only one IP Rule Being Implemented

I have server that has a 10g card in it. I need to configure that server so that for a particular IP address (172.16.2.180) traffic goes over two 10g Ports, the second needed for failover . The ...
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Only one server of GlusterFS pair is working

I've created a GlusterFS server pair, with GlusterFS v 3.2.5 (because Debian uses that version, and all our servers are Debian), using the official guide: ...
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0answers
21 views

Send apache ssl access log to syslog

I'm having an issue piping apache ssl access logs to my syslog server. I've added the following line to my apache config: CustomLog "|/usr/bin/nc -u <syslogserver> 514" "<134>%{%b %d ...
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1answer
38 views

Low load average, but high %user and %system cpu usage

Summed up question: Why do we see one set of servers perform significantly worse with the same database and workload as others? Symptoms other than longer execution time is low (near zero) load ...
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0answers
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Troubleshooting multicast on Ubuntu 14.04 server

I am troubleshooting an issue with multicast on an Ubuntu 14.04.1 LTS server. I have a simple client that subscribes to a multicast group and waits for data. The subscription is successful and shows ...
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0answers
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Docker & Shorewall: Access container via localhost

This is kinda a follow-up to the excellent anwer of user fazy in this previous question: Docker & Shorewall I applied the configuration as described there but it doesn't seem to work with a ...
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2answers
26 views

Linux smart card authentication

I am using puttysc to authenticate to a remote Linux server with my smart card . But as I understand, this isn't true PKI authentication - puttysc just unlocks the public key and matches it to a user ...
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1answer
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Invalid command: 'AuthLDAPAuthoritative', perhaps misspelled

Have apache 2.2.24 running on Gentoo server. I need apache to now authenticate through windows active directory, however, on apache service restart, I am getting this error: Invalid command, ...
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0answers
16 views

How efficient is the tac command on large files

The taccommand (catreversed) can be used to read a file backwards, just like cat reads it rom the beginning. I wonder, how efficient this is. Does it have to read the whole file from the beginning and ...
1
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1answer
71 views

SSH key login not working

i am having some problems logging in to one server to SSH via a key this is the client output: ssh 'importer@pdwhost.iwillkeepthis2.me' -p 2201 -v OpenSSH_6.0p1 Debian-4, OpenSSL 1.0.1e 11 Feb 2013 ...
10
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1answer
331 views

Upgrading openssh-server within an ssh session

Suppose that you issue apt-get upgrade from an ssh session and one of the packages to be upgraded is openssh-server. Is the new sshd process restarted after the upgrade? If yes how is the session ...
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31 views

Long process PHP stops after several minutes

What is the reason for process to end? Here is the part from log_file when this happened.. 2015-01-28 13:28:19.808 [INFO] [62.54.16.41:52122-0#APVH_mysecrets.omg] Connection idle time: 901 while in ...
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2answers
30 views

Java on Linux insufficient memory even though there is plenty of available memory being used for caching

I’m trying to start a process on Red Hat Enterprise Linux Server release 6.5 (Santiago), which is failing because it is not able to allocate sufficient memory. # There is insufficient memory for the ...
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0answers
13 views

In need of books, articles etc about server monitoring in general [on hold]

As written. It's for an essay in school and I'd need some legit sources. Any tips?
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2answers
29 views

Clean /boot on Ubuntu

When I boot my Ubuntu server, I have this warning message: => /boot is using 100.0% of 235MB And when I look into /boot, I have a lot of files which are dependent of the version of the kernel. ...
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0answers
33 views

Can not connect to apache server within VM [on hold]

I am running CentOS 7 inside a virtual machine that is virtualized with VirtualBox. My host operating system is also CentOS 7. I am using a proxy server that is referenced in the .bashrc files of my ...
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1answer
32 views

How to pass all traffic through virtual ip on linux

I have an Ethernet card on CentOS server. It has been configured: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP qlen 1000 link/ether 40:f2:e9:9b:b7:bb brd ...
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0answers
14 views

Set Static IP Address and Find MAC Address of OpenSUSE [on hold]

I am new to Open SUSE Linux. I need to configure static IP address to Open SUSE and find the MAC address of the NIC. I go through several documents but still I couldn't find the answer. If you guys ...
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0answers
13 views

Unable to launch XBMC installed on OpenMediaVault on a VirtualMachine [migrated]

I'm wanting to test different distribution to test which OS I will take for my NAS+HTPC. Just for some context: I want to put a NAS and the HTPC on the same server because my main usage is to put ...
0
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1answer
20 views

makewhatis and logrotate cron job schedule

In /etc/cron.daily/, logrotate* makewhatis.cron* I understand that above are daily cron jobs. How to display the time set for logrotate and makewhatis.cron? Its not listed when I tried this ...