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

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24 views

Running a powershell script on a Linux server

We wrote a powershell script (.ps1) that basically runs a snmpget and a nnmsnmpget commands. It works great on all Windows 2008 servers but can't get it to work for any Linux servers. Yes, it's run ...
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1answer
19 views

How to set icinga2 downtime across midnight

Our backup is running between 22:00 and about 05:00 the next day. I could not figure out how to set this in a scheduled downtime with "apply ScheduledDowntime" in icinga2 (r2.4.1-1 on opensuse 42.1). ...
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13 views

how to redirect domains to localhost iptables

i wanted redirected all the traffic on my network to localhost. currently i am trying to use iptables to do so from below command.. iptables -A PREROUTING -t nat -i eth0 -p tcp --dport 80 -j DNAT ...
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0answers
16 views

Automatically Deploy Windows Print Server Printers to Clients

Using CUPS with linux clients, configuring clients like this: $ cat /etc/cups/client.conf ServerName <printserver-hostname> $ cat /etc/init/cups.override manual means any changes I make on ...
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0answers
9 views

nfs-kernel-server keeps failing in Ubuntu

I'm trying to create NFS share in Ubuntu 14.04 strictly following this tutorial: https://help.ubuntu.com/community/SettingUpNFSHowTo. root@srv:~# service nfs-kernel-server start * Exporting ...
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8 views

How to get rid of unexpected nslcd related messages caused by resolvconf?

I'm on a Ubuntu 12.04 based system. Our system is setup to use nslcd to allow LDAP authentication. In syslog we see lines like this: /var/log/syslog.1:Dec 20 06:25:11 T53-1014-014 nslcd[1496]: ...
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0answers
18 views

Nagios check_jstat

I'm trying to monitor java memory usage using nagios nrpe features. So I download and install check_jstat and install the plugin on the remote server. And when I ran it below is the result: OK: jstat ...
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0answers
11 views

Can we write an custom check for monitoring a process with Data Dog

I want to write an DataDog Check to monitor some process like Puma, delayed_job etc, I can see there are ready plugins available for these for nagios and Sensu but not for DataDog, But can I write my ...
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0answers
12 views

http conf setting to redirect pages

I have an old url ext.examplecom/xyz-abc/ which i want to redirect it to permanent address ext.examplecom/xyz-abc/newlink/ when i type url ext.examplecom/xyz-abc/ it gives me error The requested page ...
2
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1answer
37 views

Find network percentage of NIC

So I have created a Linux resource monitoring tool that pulls various resource information. One of the fields I am trying to pull is the percent of network throughput on my NIC. So if I have a 1 ...
2
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0answers
26 views

network access issue and triage

We have two hosts in same vlan with same route rules. One of them is able to connect to an outside IP while on another I get failed: Connection timed out when testing the connectivity through netcat. ...
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0answers
14 views

How to change $PATH for crontab in Opensuse [duplicate]

I have a script written which works perfect on terminal however gives error when called through crontab. It took me a while that the problem is with the cron environment not my script. so I tried ...
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0answers
10 views

How does Qemu handle memory?

I'm having a real hard time understanding something and I was wondering if anybody has any experience with this and is able to help. I have two KVM VMHosts, one running qemu 2.4.1 and the other ...
1
vote
1answer
22 views

Identifying files being actively written to CIFS share

Is there a way to identify files that are actively being written to a CIFS mount in Linux? I am interested in skipping those files. My first thought would be to fine tune the find command with ...
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0answers
27 views

Connection issues after separating database from the web services

We had performance issues where server would run out of resource and decided to move database onto another server. It seems to work but crashes every few minutes with the following errors: Warning: ...
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0answers
12 views

Jail php (nginx + unix socket) in a folder

I have to store two php applications in a single server. Following my current setup: /etc/php5/fpm/pool.d/app1.conf [app1] user = app1 group = app1 listen = /var/run/php5-fpm-app1.sock listen.owner ...
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0answers
6 views

tunel trafic (via vpn) if its going out of specific interface (with private IP)

os: linux I would like to create some interface with private IP like 192.168.0.100 and make some software bind on this interface/ip (that I can do). This software makes outbound connection to ...
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3answers
28 views

How to use iptables or tc to limit packets per client.

I have some problem network clients which send data too fast. I want to slow them down, using iptables, or possibly tc. I've seen iptables solutions like: sudo iptables -A INPUT -m state --state ...
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votes
1answer
21 views

how to find out the clients connects to the proxy server in redhat linux

Is there any way to find out the client machines connected to the particular proxy server in redhat linux , i am using redhat linux version 6 and squid configured in it
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0answers
7 views

Is host process listening on virtual interface added to virtual switch possible?

I have a working setup of three virtual machines (on VirtualBox) bridged to tap devices added as ports to Open vSwitch. They are able to communicate. Now, I would like to make a host process (one ...
1
vote
1answer
21 views

Checking RAID events log or history of a Smart Array P400 in a HP ProLiant DL380 G5 server

In a rack-mounted HP ProLiant DL380 G5 server, running Linux (RHEL - Red Hat Enterprise Linux Server - version 5.9, 64-bit): after a shutdown and power on, one of 4 hard disks of a Logical Drive using ...
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0answers
9 views

unable to connect google cloud compute engine ssh with browser or root parttions is full

I try to log-in ssh browser with google developer console but i am not able to connect and other user have no root permission to remove and delete the files. I checked from other normal user,root ...
2
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1answer
45 views

TCP connection; ACK not received

I am having trouble sending mail from Linux to Exchange server. When I telnet from Linux to Windows on port 25, I am not receiving any message from Exchange. The connection is automatically terminated ...
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20 views

Custom oracle linux 6.7 image on google cloud hangs at 'Booting from 0000:7c00'

I am trying to create a custom oracle linux 6 image on Google compute engine. I followed all the steps as described in the google instructional videos here ...
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votes
1answer
26 views

Seperating web server from database over public network

How much of a risk is it splitting nginx web server from mysql database server and having them talk over public network? The database server would be in the same OVH DC but from what I understand ...
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0answers
13 views

dadcomputer.home appears as dadcomputer.lan when logging in to another computer [on hold]

I changed ADSL router recently (from BT home hub 4 to technicolour tg582n) and now dadcomputer.home (ubuntu) appears as dadcomputer.lan when logging into my freeciv server, or SSHing into another ...
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4 views

Dell R710 OS install [migrated]

I just bought a couple Dell R710s on Ebay for a home lab and want to install Debian as the main OS. Im new to dealing with server administration aside from Development stuff. I am wondering on where ...
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2answers
25 views

auditd: how to install from source in Ubuntu?

I want to setup auditd to collect its logs from remote server. I'm using Ubuntu 14.04.3 LTS. This feature seems to be disabled into Ubuntu auditd package. So, I'm going to install it from source. ...
3
votes
3answers
224 views

Cron appears to run but doesn't execute in the same way as when run manually from the terminal [duplicate]

I have a php script that connects to an external API returns some data and updates a database table. I can run this directly via my command line / SSH terminal and it works fine (takes about 5 minutes ...
1
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1answer
30 views

Assign more than one IP Address to the same MAC Address on Linux ISC-DHCP Server

I have the following question: One Linux DHCP server in pool mode, because of the step of fabrication, all the products have the same MAC Address that is changed at end of line, the boards use ...
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0answers
12 views

samba 4 create mask not working

I have following samba config [global] server string = %h server (Samba, Ubuntu) server role = standalone server map to guest = Bad User obey pam restrictions = Yes ...
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1answer
50 views

Server becomes unresponsive [on hold]

Our database-server sometimes become unresponsive. It runs a fully updated Ubuntu 14.04 LTS. Notable non-vanilla software running on it are Nimbus, TSM and Oracle. About once a day, it becomes ...
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1answer
23 views

Chmod of php file 444 but it is still writable [on hold]

I have Centos 6 with php 5.4. I have some files with chmod 444 and directories with Chmod 505. But both are still writable and i am also able to delete these files and folders. I searched over Google ...
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0answers
19 views

Remove the 64bit option from ext4 filesystem

I have a 50GB ext4 FS that was mistakenly created with the 64bit extension. I'd like to know the extension can now be removed or if it is necessary to start from scratch. This link suggests that it ...
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0answers
3 views

Samba printing gives NT_STATUS_NO_SPOOL_SPACE

I have a CUPS server with 1 printer attached, and then shared via Samba. Though every few days printing via Samba stops working, with the following error: $ echo test | smbclient ...
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0answers
8 views

Need Help in configuring private website available on TAB/mobile (linux) [on hold]

I have website say example.com with an IP, which is hosted over amazon, i removed its public access by removing A record and i put IP in my host file to access the website privately. locally i am ...
1
vote
1answer
33 views

Implications of increasing physical ram of VM

I have a Centos7 VM running under VMware and I'm considering increasing virtual memory in the Centos VM. Currently my VM has 8GB of virtual memory, 6GB of swap and using 0 swap right now. I am ...
1
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0answers
19 views

DHCP: bad configuration fixed-address?

My configuration of DHCP is: dns-update-style interim; default-lease-time 86400; max-lease-time 86400; authoritative; log-facility local7; subnet 192.0.1.0 netmask 255.255.255.0 { pool { option ...
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0answers
16 views

Server for IoT application [on hold]

What server(s) system are 'best' to handle simple trigonometric calculations of reading from thousands of accelerometer sensors in real time with minimum latency? Thanks for your opinion.
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votes
2answers
38 views

Unix / Linux command to see finished or killed processes

Is there a way to see processed that finished running or were killed a given amount of time ago? For instance, ps -ef will show all running processes, but if a process finishes, it is no longer ...
1
vote
2answers
14 views

Git post-receive hook hanging

I have a git post-receive hook which builds a Go program and runs it. The problem is that I'm getting all the output from the Go program and the git push "never finishes" the execution, getting ...
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0answers
5 views

Port Microsoft R Open for Hadoop to Hortonworks Cluster on Oracle Linux

Microsoft has released an enhanced version of R for Big Data, Microsoft R Open ("MRO"), and several related products and services. One of those is MRO for Hadoop - Red Hat Linux. I don't see a ...
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0answers
16 views

InnoDB causing mysqld to crash on Amazon Linux AMI

This Amazon Linux server is running a single WordPress site that is constantly crashing. The way to resolve it seems to be to run service mysqld restart and it resumes operation until it crashes ...
2
votes
1answer
23 views

How to properly configure a 2 node glusterfs system?

I am trying to make a 2 node linux servers with high available apache using glusterfs 3.7.6 for data replication and pacemaker+corosync as resource manager. However i'm seeing a problem with gluster ...
0
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0answers
31 views

Mysql listens to wrong port on restart

I'm working on a 'local' PHP project. It's a PHP app running in a Debian VM intended for use on the user's own PC. I have a couple of python scripts running as root services from /etc/init.d which ...
2
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0answers
34 views

How to use an IPv6 Edge router in an IPv4 network?

Background I have the following set-up: I use 6LOWPAN (IPv6 implementation in IEEE 802.15.4) on my sensor link that have IPv6 addresses (stateless) as aaaa::xx/64 It uses RaspberryPi (RPI) as an ...
0
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1answer
20 views

linux + increase temporary the /tmp partition for installation

I have linux VM machines with version red-hat 4 I have the following file system df -h Filesystem Size Used Avail Use% Mounted on /dev/sda2 950M 163M 739M 19% / /dev/sda1 ...
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2answers
37 views

What's the default order of “for f in directory/*”? [duplicate]

I wanted to know if iterating over files in directory with for f in directory/* will have some default order of processing entries (file name, created date, etc.?), or is it non-deterministic? It ...
0
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0answers
12 views

overlapping subnets - how to give one precedence?

I have Linux devices with a single ethernet interface and two IP adresses. The first (eth0) is statically configured to 10.1.1.146/24. The second (eth0:1) is configured via DHCP and it may happen ...
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1answer
50 views

Linux Server Memory: Is this enough?

One of (weblogic)process on my WAS server(redhat linux) is killed at last night. There is no log. so I doubt my system memory. Is the system or process has enough memory? server specification and ...