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

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3
votes
2answers
7k views

pppd “peer refused to authenticate”

I have a working pptpd+pppd server configured which currently has two Windows 7 clients successfully connecting. However, when I try to connect a linux client I'm getting a really weird exchange that ...
1
vote
1answer
999 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 ...
1
vote
0answers
24 views

systemd Using Lots of Resources on CentOS 7

I have a web server running CentOS 7, on which the systemd process is using nearly 4 GB of RAM after a couple weeks of uptime. RAM usage is increasing steadily at about 200MB per day. This and related ...
0
votes
0answers
7 views

how to suspend cron on the system for all processes, and details about cron files

I have a CentOS virtual server hosted with a company online. I want to shut down cron for the entire system, and then analyze the cron jobs that are running. I have searched through documentation ...
0
votes
0answers
4 views

Cant find fcgi.conf

I have a website hosted on a dedicated server managed by plesk. I get this error when too many users use the site at the same time mod_fcgid: can't apply process slot for I have searched and found ...
2
votes
3answers
4k views

Production Instance : CLOSE_WAIT Connection Issue

I am using 10EC2 Instances behind 1 ELB. And ELB configured 80 to 8080 and 443 to 8080 port. And all 10EC2 instances having installed with Apache Tomcat, total request on ELB around 8000 to 10000 in ...
6
votes
2answers
2k views

How to achieve multiple NFS/TCP connections to the same server?

I'm trying to maximize the NFS/TCP bandwidth between a Linux client and a single NFS server over a 10Gbps link. Although each NFS mount has its own device (major/minor), everything comes down to a ...
-1
votes
0answers
12 views

Install CentOS 7 on N54L

currently Im using Scientific Linux 7.2 on my HP Microserver N54L. To get more "mainstream" and out of curiosity (and to try out my ansible-playbooks), I wanted to install CentOS 7 on it. So I ...
7
votes
2answers
195 views

Linux no space left on device issue

We have SUSE Linux OS: $ uname -a Linux 3.0.13-0.27-default #1 SMP Wed Feb 15 13:33:49 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux Only for a specific file the file creation fails with error no space ...
-2
votes
0answers
14 views

Give www-data Permission To Reload Nginx Works Via Command Line but not cron [duplicate]

I have been researching for literally days, and to no avail. I have been trying to get my php script to be able to reload nginx. exec("sudo /etc/init.d/nginx reload"); works when I run the script ...
0
votes
1answer
25 views

How can I get my mediawiki to stop thinking I have cookies disabled?

I've searched half a day for how to resolve this issue, and can't figure it out. Shortly after I made my wiki a simple private wiki according to the instructions at Mediawiki's website, it started ...
0
votes
2answers
1k views

Unable to send mail through php script

I have setup a server with the following settings: CentOS release 6.3 (Final) Kernel \r on an \m Linux version 2.6.32-279.14.1.el6.x86_64 (mockbuild@c6b8.bsys.dev.centos.org) (gcc version 4.4.6 ...
-2
votes
1answer
16 views

There is a requirement from my boss to prepare a cluster of our application on wildfly application server

There is a requirement from my boss to prepare a cluster of our application on wildfly application server. I have designed the architecture as two haproxy(for loadbalancing),two apache servers for ...
29
votes
7answers
28k views

What happens if I delete lost+found

When you create some Linux filesystems like ext3 a 'lost+found' directory is created. According to this files will be placed there if files were damaged from some kind of system crash. What happens ...
1
vote
3answers
7k views

service httpd restart failure on aws amazon linux ami

Thanks for your help. I recently did the following: Ran sudo yum update on my ec2 instance running the Amazon Linux ami I then added a virtual host to my vhost.conf for a subdomain. While the server ...
0
votes
1answer
14 views

configure a PAM module to be required for all but certain users for which it should be sufficient

I'd like to be able to configure /etc/pam.d/sshd so that: for all users except those in group "admin", module pam_radius is required. for those users in group admin, module pam_radius is ...
1
vote
1answer
59 views

IBM System x3850 M2 Ubuntu Server Install

I just purchased two second-hand IBM System x3850 M2 rack servers, and I am a real noob to the subject. As such, I cannot tell if there is a major difference between x3850 M2 and x3850 X5. If there ...
1
vote
1answer
24 views

Apache2 and nginx randomly consuming all memory, every week or so

I'd like to preface this by saying I have read at least 10 related Serverfault questions before resorting to making my own... I am currently running a Ubuntu 14.04.3 server with 2GB of RAM and about ...
-5
votes
0answers
29 views

Free Linux Server? [on hold]

Yes, yes, I know the drill, any free server you'll stumble upon is either a fraud, or works absolutely horrible but, is there any site I could use to host a small pi-hole (DNS) server on for a small ...
0
votes
1answer
1k views

Outgoing IP Packet Capture and Logging with iptables

My goal is to use ipset lists in iptables to log outbound traffic to certain IP addresses. I intend to monitor an entire network passively. I have port mirroring enabled and the port mirrored ...
4
votes
3answers
15k views

Quotas in vsftpd?

I tried to configure user disk quotas for vsftpd. I configured quotas for ftp virtual users using the "quota" package on debian (you know, by editing /etc/fstab and all that stuff). Internet told me ...
3
votes
2answers
10k views
+50

How virbr0-nic is created?

How can I create a virtual network interface like virbr0-nic? I am trying to find a way to create a NIC like virbr0-nic but everything which I can find on the Internet is how to create an interface ...
0
votes
0answers
6 views

Xen: Error: Device 51712 (vbd) could not be connected. Hotplug scripts not working

I am really unsure, but when I am trying to create a new VM with: xm create default.cfg -c It returns: root@user:/home/user# Error: Device 51712 (vbd) could not be connected. Hotplug scripts not ...
0
votes
2answers
15 views

ansible find patterns on single line?

How could I do this: - find: paths: "/etc/ssl/" recurse: yes patterns: - "*.pem" - "*.crt" On a single line? The documentation suggests something along: - find: ...
2
votes
1answer
3k views

Is there a way to ignore the “fsck.ext3: Unable to resolve LABEL” error during the boot?

We have a file-cluster on servers with multiple disks, and we have created a software RAID1 over boot and / partitions, planning that if a single disk goes down, we still will be able to boot and ...
1
vote
1answer
510 views

How to restrict zone transfers to specific authorized servers only

I recently failed a PCI compliance scan because of the following: This DNS server allows unrestricted zone transfers. Attackers may be able to use this information to gain knowledge on the ...
6
votes
2answers
12k views

Is it possible to make Nginx listen to different ports?

I created one Nginx with one Linux Azure VM, is it possible to make nginx listen to different ports so that when I change the port number, the content would be different. I found there would be a ...
2
votes
2answers
1k views

AD plugin or utility that generates unique uidnumber / gidnumber on creation

I'm looking for either: A plugin that will auto-generate a unique uidNumber attribute value for new users and a unique gidNumber attribute value for new groups upon creation. A configurable ...
11
votes
5answers
42k views

How can I manually run a nagios check from the command line?

When defining and testing new services in nagios I have been restarting nagios, then clicking the service, and rescheduling a check for as soon as possible, then waiting until the check happens. Is ...
0
votes
1answer
2k views

NFS lock not working properly

I'm getting the following error on an oracle database. ORA-27086: unable to lock file - already in use It tries to lock a file that resides in an NFS mount. The NFS is on a loopback setup (long ...
2
votes
4answers
8k views

How can I assign an IP by MAC address in dhcpd

How do I assign an IP address specific to a mac address using dhcpd? So far I have tried host blah { hardware ethernet <mac address>; fixed-address <ip address>;} in my dhcpd.conf. But ...
3
votes
6answers
2k views

“watching” a log on FreeBSD vs Linux

On Linux systems I can watch -n1 tail /var/log/whatever.log or watch -n1 grep somestuff /var/log/whatever.log To show updates to a log every 1 seconds. On FreeBSD however, the watch command does ...
0
votes
1answer
4k views

rsync: getcwd(): No such file or directory (2)

I want to sync Server1 and Server2's logs to LogServer. For Server1: rsync -avz -e 'ssh -p 2188' user@server1:/usr/local/servers/logs/* /usr/local/logs/ This one works, but for Server2: rsync ...
0
votes
2answers
91 views
+50

Converting Linux machine from XenServer to Hyper-V

I'm in the process of converting the last few on my XenServer VMs over to Hyper-V. The majority of them have been Windows machines and I've done a backup and restore using Windows Backup. For some of ...
-3
votes
0answers
12 views

linux centos cache memory increasing drastically [on hold]

We are using centos on server side. But unfortunately we are getting issue like cache memory increasing drastically. Please let me know how to overcome it. Thanks in advance.
5
votes
4answers
4k views

Openvpn, forward packets very slowly

I rebooted my server, and an odd issue just came out. I am running on ArchLinux, the clients are Ubuntu, Android and Mac. The problem is that accessing the internet via the clients is slow, about ...
4
votes
3answers
8k views

Why does NTP daemon keep listening on UDP6?

I have a clean Debian 7 installation, and I manually entered the following lines in /etc/ntp.conf: interface ignore wildcard interface listen <local_nic_ip> Hoping that NTP will no longer ...
0
votes
0answers
17 views

Turn off output/force DPMS on unloaded GPU without driver

I'm running a KVM VGA Passthrough VM on my desktop, passing it my dedicated GPU. This VM does not automatically start as I don't always need it. When the VM isn't running, my desktop doesn't touch the ...
2
votes
1answer
511 views

Not able to set memory limit on containers in docker

I am using ubuntu 14.04 with latest docker. No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 14.04.1 LTS Release: 14.04 3.18.5-x86_64-linode52 kernel But when i ...
0
votes
0answers
12 views

Cleaning Nginx access log files - removing user agents used for testing [on hold]

I've done quite a bit of performance testing on my Amazon Linux production server, across half a dozen sites. As a result I have dozens of log files, some gzip'd, with tens of thousands of hits that ...
3
votes
3answers
15k views

Improving OpenVPN Performance

I've been trying to improve my OpenVPN performance and this is my current setup: cat /etc/openvpn/server.conf port 443 #- port proto tcp #- protocol dev tun #tun-mtu 1500 tun-mtu-extra 32 #mssfix ...
0
votes
0answers
4 views

Centos 6 ssd mtip32xx driver command(s) timed out: tagmap

We have some servers with Centos 6 with "Micron Technology Inc RealSSD P320h" ssd drives. We have noticed in the kernel log Feb 11 09:47:32 hostname kernel: mtip32xx 0000:47:00.0: 1 command(s) timed ...
0
votes
1answer
9 views

chef common recipe multiple roles

i have created a mongodb chef recipe, and i am overriding the default attributes on the recipe from the role. name 'mongo_datanode_jackey' description 'this module is currently under testing...' ...
0
votes
1answer
553 views

/proc/self/mountinfo per-mount-options vs per-super-options

I am trying to check for the current status of a mounted partition, rw/ro. On Cent6 /proc/self/mountinfo has some interesting info. One of the items contained in the output for each mount point is ...
1
vote
1answer
142 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
votes
1answer
12 views

Adding trusted root certificates to the server cent os

I m trying to install a root certificate in my cent OS box. I did the following Enable the dynamic CA configuration feature: update-ca-trust force-enable Add it as a new file to ...
0
votes
1answer
13 views

How do I reconfigure my disk array on a Dell machine under Linux?

I have a Dell R620 with a PERC RAID controller (lspci shows "RAID bus controller: LSI Logic / Symbios Logic MegaRAID SAS 2108 [Liberator] (rev 05)"). I had placed a single disk in it, made it a ...
0
votes
1answer
26 views

Correct way to setup linux company share folder with usable permissions

I've just started working for a small company that has a globally shared folder run from an Ubuntu file server (Raid 5, etc) shared by Samba. The workstations (Centos) are all fstab setup to mount ...
1
vote
0answers
11 views

Installing VirtIO SCSI on Windows Guest fails

I'm running Windows 10 as guest via KVM / qemu. Unfortunately, Windows doesn't recognize the fedora virtio drivers I want to install for better HDD perfomance. The driver itself does show up, but ...
0
votes
2answers
4k views

Zabbix with active checks

In Zabbix 2.0 I have configured zabbix agents to be active and disabled passive checks. I've also configured the host to automatically add these hosts to the "Discovered Hosts" host group. However, ...