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

learn more… | top users | synonyms (1)

0
votes
0answers
20 views

Samba 4 Domain Join Command Fails

Have been attempting to get a test server connected to our AD (Win2k12R2) but when trying to do a domain join I get this error. it@testdom:~$ sudo samba-tool domain join xxx.com DC -Uadministrator ...
0
votes
1answer
22 views

snort complains on local.rules

I just installed snort-2.9.7.0 on Fedora 20, and am getting error when running: % snort -c /etc/snort/snort.conf --dump-dynamic-rules=/tmp Running in Rule Dump mode --== Initializing Snort ...
-2
votes
0answers
33 views

eth0 >>--> switch >>-->eth1 [duplicate]

I have a server with 2 ethernet interface eth0 and eth1. (OS CentOS 6.6) both ifcfg config eth0: IP: 192.168.0.10 mask: 255.255.255.0 gw: 192.168.0.1 eth1: IP: 192.168.0.11 mask: 255.255.255.0 gw: ...
0
votes
1answer
21 views

download multiple specific files using sftp and a list of filenames [closed]

I was downloading many files from remote server into my computer. I didn't have the time to finish the download, I interrupted the download so not all files are downloaded. On other day, I wanted to ...
-1
votes
0answers
18 views

User does not have permissions to read interfaces

I'm using Debian 7 64bit. I created a simple user in my linux called "testuser". Everything is ok with this, however when i'm trying to list the interfaces using the testuser it says i permissions ...
1
vote
2answers
39 views

Configure HAProxy on Linux to accept 10K simultaneous connections

I have HAProxy 1.5 running on Ubuntu 14.04 (modified). It accepts connections on http and https ports. Two backend applications process requests using persistent connection. When I create around 2200 ...
-2
votes
0answers
23 views

Forward real ip haproxy

Okey so I use haproxy to forward a TCP connection but the proxy IP shows instead of their IP which is quite annoying. How can this be fixed? I run on centOS btw.
0
votes
1answer
83 views

Effectively Monitoring Server Load of Production Amazon AMI + Tomcat + Lucee Instance [closed]

Looking for advice as to effectively monitoring the load of a production web server. Preferably solution will be free or minimal cost (server is owned by a very small web development company - read ...
5
votes
1answer
810 views

Linux high RAM usage for unknown reason

after searching around for this and only finding posts of people who do not interpret the "cached" figure correctly, I decided to ask this question. I have some servers at hand, which act strangely. ...
0
votes
1answer
31 views

Logstash: Failed to flush outgoing items

First of all, I'm a total newbie to logstash. Despite the fact that I've managed to achieve some basic logging (trying to parse an apache log file without the build in COMBINEDAPACHELOG). However, I ...
0
votes
0answers
23 views

How to bypass OpenVPN per application

I have a linux machine that routes its whole internet traffic through an openVPN connection. It was explicitly configured to work that way. However, the machine has a few applications that should not ...
0
votes
0answers
2 views

Hibernate/Resume Windows7 Between Native and VM host? [migrated]

Is it possible and safe to do the following? boot Windows 7 natively hibernate boot alternative OS ( say Linux ) load a preconfigured VM using the Windows 7 native disk start the VM Host OS, which ...
3
votes
0answers
43 views

Linux Server Virtual Ethernet interface stops responding to arp requests

I'm hoping someone has had this issue before as it is driving me nuts. I have 2500 linux embedded Linux servers. We use these servers partly to act as gateways to other devices sat on a private ...
1
vote
1answer
60 views

How to insulate apps from underlying OS changes using Docker

I'm not a docker user, just want to know if this is an accurate use case for docker. Current State We deploy custom Java apps on RHEL/VMware. To function properly, the apps depend on local Java ...
0
votes
3answers
62 views

Alternatives to Kerberos for passwordless server access

I have a bunch of Linux servers and three Windows servers 2008 R2. I would need a solution which would enable passwordless SSH login from each of those servers to all others. I could do this by ...
0
votes
1answer
30 views

How to fsck a partition that is part of a software Raid that again is part of a LVM volume group?

The faulty partition is /dev/sdb3. from /proc/mdstat: md2 : active raid1 sda3[2] 2896184639 blocks super 1.2 [2/1] [U_] says /etc/fstab: # /dev/md/2 belongs to LVM volume group 'vg0' ...
1
vote
0answers
58 views

Powershell execute Queries using SQLPLUS

I have a RHEL server with Oracle 10G installed. I need to write a powershell script to query my database and get the output. I have imported Posh-SSH module and am able to connect to my RHEL server ...
0
votes
0answers
21 views

CPU at 100% after starting Lotus Domino

Linux distro: 2.6.18-348.6.1.el5 Lotus Domino 8.5.1 FP5 Starting Lotus Domino Server, after few seconds, CPU jump near to 100% (due to server process). PID USER PR NI VIRT RES SHR S %CPU ...
0
votes
0answers
11 views

changing default centos 7 workspaces [migrated]

On CentOS7, using the gnome environment, I do not seem to be able to add, remove, or change the workspaces. I prefer to have 2 workspaces, or no workspaces, and understand the usefulness of the ...
-1
votes
1answer
17 views

How to redirect all incoming packets to sniffer in Linux using iptables?

I need to redirect all incoming tcp packets from eth0 to current host (change ip address from 1.1.1.1 to 1.1.1.2) and outgoing tcp packets from sniffer from eth1 to another host(from 2.2.2.2 to ...
0
votes
1answer
35 views

Can't reset permissions on amazon ec2

I've a big problem: when I try to sudo something, this is what append: sudo: /etc/sudo.conf is owned by uid 222, should be 0 sudo: /etc/sudoers is owned by uid 222, should be 0 sudo: no valid ...
-1
votes
0answers
14 views

Will there be any performance issue if tcp_keepalive_time is too short?

We are implementing an XMPP server, one of the issues is that it's hard for the server knows that connection has broken, say for example, when the mobile client switch network. We'd like to detect ...
-1
votes
1answer
40 views

Remove the unspecified gateway from linux routing table

I've a remote linux machine whose the routing table is : [root@hostname]# route -n Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 0.0.0.0 ...
0
votes
0answers
26 views

How to interpret atop Disk usage and what disk usage is reasonable

I have a a couple of virtual machines all with the same provider. I'm using them for web hosting and have started to get intermittent slow page load times. I've installed atop to try and get to the ...
4
votes
0answers
27 views

Forward proxy for webservices with SSL client certs

I have lots of servers which access various external webservices, most of which use SSL, some of which require client certificates. I would like to centralize the configuration of client certs and ...
-1
votes
0answers
13 views

Linux: hacked account attempting ftp connections — how to identify and stop? [duplicate]

I transferred a (unknowingly) compromised Wordpress installation to my Ubuntu Server (14.04) and although I think I've managed to clean out most of the malware the account still periodically attempts ...
0
votes
0answers
17 views

Exim4 can not send mails via mail client

I'm using Exim4 as my smtp server, in my case, I can send e-mails to any mail accounts from my smtp server, but when I tried to use Thunderbird to send mails, it shows the following error. Sending of ...
1
vote
0answers
47 views

mkdir: “no space left on device” on specific folders after Apache Tomcat reached max-file ulimit

The question: I have a tomcat running a java application that occasionally accumulates socket handles and reaches the ulimit we configured (both soft and hard) for max-open-files, which is 100K. When ...
1
vote
0answers
38 views

Assign IP not defined in a subnet range dhcpd [closed]

I look to deploy a DHCP server for a network of VMs that spread over various subnets. The DHCP server will not be used to assign dynamic ranges, but only static IPs based on the host MAC address. Is ...
0
votes
1answer
30 views

Test cloud VM performance

I have a linux VM hosted in a cloud environment. I suspect the provider to do too much overprovisioning with CPU and IO, from time to time. For example postgresql's reports 300ms+ queries that are ...
0
votes
1answer
33 views

how to stop md3_raid1 and md3_resync process which takes high load

how to stop md3_raid1 and md3_resync process which takes heavy load. can anyone please help me how to stop this process and may i know why this process in started,, now there are 100 plus visitor , i ...
0
votes
1answer
40 views

What does the @ means in ip link show command?

I am new to Linux network admin. I was learning the ip commands with one of my colleague's server with ip link command. When I try to show to one of the vlan information, I see this: vlan1@eth1: ...
2
votes
0answers
28 views

NTP offset warning when no NTP server is defined and NTP not running?

I just want to preface by saying that I am still learning linux and don't have too much experience with it. My job requires me to monitor an alert system for our clients hosts that are running our ...
1
vote
1answer
58 views

com.sun.mail.iap.protocolexception no login methods supported

A JavaMail app and dovecot/postfix/mutt are running on the same CentOS 7 physical serverbox. This JavaMail app was able to reliably import emails via IMAP using the same exact code until some changes ...
3
votes
2answers
131 views

Do I have 2 different Apache installations on my VPS

I'm new to server maintenance, and am running Apache 2.4 on Ubuntu 14.10 on a VPS I just set up yesterday. It seems as if I have two different Apaches installed at different places in the machine due ...
-1
votes
1answer
13 views

Is there any way to backup all mysqldatabses in single file

Usually i have cron job to dump separate databases in separate sql file and then i can restore it. Is there any way , any command so that i run as cron job everynight and i have single file which i ...
0
votes
1answer
58 views

why won't mysql accept connections from local programs?

I am getting a "Host 'mydomain.com' is not allowed to connect to this MariaDB server" error whenever a program on my CentOS 7 server tries to access the MySQL/MariaDB database located on the same ...
-1
votes
1answer
34 views

Postfix- Host or domain name not found - looking up wrong domain name

I want to know where i can configure the following. I want postfix to lookup the host: myexample.com, but instead it is looking up Host-Wordpress-01. Which is my digitalocean droplets name. ...
0
votes
2answers
38 views

Cron job ignores part of trigger url

I created a cron job to trigger a url at set times, which in turn starts a product import script. But for some reason part of the trigger url with parameters is stripped away. I set the cron job in ...
0
votes
1answer
30 views

Linux/windows mount on boot issue

We have a Linux system and several Windows system on our network. The Linux system has mounts on two different systems currently defined in fstab like this: //mandi/aaronbackup /media/backup smbfs ...
-1
votes
0answers
20 views

rsyslog no log for kern.log

Good morning, Information does not get logged in kern.log Runned test logger -p kern.info "kern.info: test" /var/log/kern.log /var/log/kern.log ← stay empty /var/log/syslog ← "test message" ...
0
votes
1answer
11 views

kadmin cannot list principals “requires list privileges”

I can authenticate fine via kadmin however cannot list principals? [root@server ~]# kadmin -p admin Authenticating as principal admin with password. Password for admin@org.domain.com: kadmin: ...
0
votes
0answers
30 views

Installing PHP OCI8 extension on SLES 11 with PHP 5.6.3 Oracle Instantclient 12.1 and APACHE2

I attempting to install the OCI8 extension. The OCI8 extension version is oci-2.0.8. The configure script to install is "./configure --with-oci8=instantclient,/usr/lib/oracle/12.1/client64/lib". ...
2
votes
1answer
38 views

grep ouput filepath with file modified date?

Is it possible to make the grep command to output file paths with file modified date like so: 12-02-2015 /file/path/to/the/file 16-02-2015 /file/path/to/the/file 25-02-2015 /file/path/to/the/file ...
1
vote
4answers
170 views

Communicating via separate network cards

Assume you have a web server with two network cards (and their associated ports), let's call them A and B. The idea is to connect one port (A) to the internet and the other (B) to some isolated ...
-1
votes
0answers
39 views

How to fix “Couldn't resolve host nginx.org” in RedHat v6.3?

As per the instruction on http://nginx.org/en/linux_packages.html , I am trying to install nginx on Red Hat v6.3 server. I have created a file as per the instruction:- Create the file named ...
2
votes
1answer
24 views

UFW rules in place and enabled yet traffic still allowed

I have UFW configured to try and block some unwanted IPs and associated requests. #ufw status |less Status: active To Action From -- ------ ...
2
votes
3answers
85 views

KVM guest is unable to access the internet

I have a Debian host that has several allocated IPs and KVM with a Debian guest using a bridged network. The guest is completely unable to reach the network, including the LAN or even the host. ...
0
votes
0answers
24 views

How do I configure KVM guest to have Internet access?

I am trying to get KVM working on my Debian server and I am having a slight problem with networking with my guest OS (also Debian). The virtual machine is using the "default" network (without a ...
2
votes
1answer
82 views

Why is sshd engaging PAM still?

Background/Behavior is: if you ssh to box via and GSSAPI/Kerberos succeeds and you have a local user in /etc/passwd, you login fine per below PAM config. All Good there. But if you don't have a ...