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

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26 views

IPSec VPN between Fortigate 5.2 and Linux with ipsec-tools - data does not pass

We have an IPSec VPN tunnel between Fortigate device and Linux box running racoon and ipsec-tools. The setup worked in Fortigate 4.X, but with 5.2 the SAs are negotiated OK and no traffic can be ...
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1answer
30 views

libvirt: set hostname using dhcp in virtual network

I've configured a host-only (aka private) network for a group of VMs on a CentOS 7 host. I've created static leases in the DHCP section for the virtual network. The IP address is getting set ...
1
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1answer
43 views

Apache 2.4 require all not working

My virtual host configuation file contains the following (Apache version is 2.4.7): <VirtualHost _default_:443> [...] <Directory [...]> Require all granted ...
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1answer
45 views

BTsync Webui unreachable on headless Linux host

I am trying to install the latest version of btsyc on a CentOS 6.5 headless server. I cannot reach the WebUI. I configured the webui on port 65000 via a config file and start btsync with the config ...
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2answers
30 views

Mounting an SSD

I have recently got a 'dedicated GAME server' from OVH and I've been promised 2x480GB SOFT SSDs. However, df -h shows this output: root@dedi:/home/shavit# df -h Filesystem Size Used Avail Use% ...
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1answer
29 views

boot issues after converting running linux to vm manually

I did a file copy of a running debian8 installation to a image. Following is the proceedure. create a vdisk image - raw / vdi. mount it locally. do a file wise copy of a running linux distro: ...
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0answers
16 views

Linux Server with Low Disk Space [duplicate]

I have a server on Ubuntu linux and when I run sudo df -h Filesystem Size Used Avail Use% Mounted on udev 3.9G 12K 3.9G 1% /dev tmpfs 799M 664K 798M 1% /run ...
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1answer
43 views

How can I use Ansible to conditionally append a line in a file?

I'm trying to create an Ansible task that sets up trim/discards. I have a playbook that takes care of everything else (LVM, fstrim), but I can't figure out how to get crypttab configured properly. ...
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0answers
29 views

Remove same php code from all php files [closed]

I need to remove everything between following tags in all php files using ssh <?php $rfghoh = $rfghoh=$yuoopi-1; ?> Thanks
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1answer
22 views

How to see what processes produce usage spikes on Ubuntu server?

As I was monitoring one of my servers it seems that there are some unusual processor usage spikes as seen in this image: that occur as can be seen from this graphic in a repeated interval. This ...
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votes
1answer
48 views

Removing 1 line of code from all php files

I can see same code under all php files. Starting from <?php $rfghoh = '*f%)sfxpmpusut)tpqssu6 And end $rfghoh=$yuoopi-1; ?> I am just looking for script using which only first line of ...
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1answer
36 views

Capture traffic to/from a network node

I would like to capture all traffic to/from a network node. I don't know much about the network setup there, here's what I know: The target node is a Linux server, which has no access to internet, ...
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votes
2answers
70 views

Microsoft Exchange server alternative [closed]

this is my first time posting on this Q&A so I hope I'm posting it on the right one. I'm running a Linux server, with a mail server installed on it. The mail addresses are configured on ...
1
vote
1answer
33 views

Digital signature with openssl

I am trying to sign and verify a signature using an RSA key-pair. Here is how I generate the key pair (which work fine for encryption / decryption): ssh-keygen -t rsa -f mykey -N '' -b 2048 mv ...
-1
votes
1answer
28 views

AWS EC2 Instance rejected public key

I just launched a AWS EC2 Image today, I got to authenticate successfully and I did the following changes: sudo yum update Install Oracle JDK 8_92 using wget Remove all other java options export ...
-2
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0answers
31 views

How might I give secret keys to a php web page without making them readable by the apache user?

I am developing a web site which runs on a generic LAMP stack. Consider these two PHP files /web_stuff/phpbin/secrets.php /web_stuff/public_html/index.php Apache is runs as the user www-data and ...
-1
votes
1answer
36 views

simple routing don't work under debian jessie

I'm trying to set up simple enogh system with 3 virtual debian jessie machines: first connected to second and second connected to third. I want first one to be able ping third one. To achieve this, ...
0
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0answers
30 views

Redhat 6.8 - Where to install php-mssql

I tried following tons resources online to install php-mssql on Redhat 6.8 by using the Extra Packages for Enterprise Linux (EPEL) repo and it says that "No package php-mssql available". I made sure ...
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1answer
31 views

Not allowing a user to ssh within a server with a different account.

Imagine a user is logged in as test@example.com . Now the test user is trying to ssh from the current server to another server using someone else's account. For example : test@example.com:~$ ssh ...
0
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1answer
21 views

Unable to SSH with shell into NAS: “error: openpty: Invalid argument”

I have a WD MyBook WorldEdition II (White Light) NAS here. This essentially is a ARM926EJ-S with two SATA drives attached. For quite some time, I was running Debian 6.0 Squeeze on it. Now I recently ...
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0answers
19 views

Error in crontab file: bad day-of-week

When I run crontab -e on my Debian server and add these lines: # System statistics */10 * * * * /usr/lib/sysstat/sa1 1 1 > /dev/null 2>&1 59 23 * * * /usr/lib/sysstat/sa2 -A > /dev/null ...
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0answers
11 views

What append options are needed to do kickstart install of Red Hat 6.6?

So I'm trying to install RHEL6.6 over PXE. I have my kickstart file and my iso, but it seems the options I'm specifying in the append section of my default file are not being read. I would like to ...
0
votes
2answers
24 views

Azure Scalable s Storage

Am wondering if for some reason I chose to deploy an Azure VM that has 29GB storage for the sda1 (O.S Disk), can I resize this disk in anyway possible? (resizing the SAME DISK without attaching new ...
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0answers
19 views

I see security updates but there arent any - Ubuntu 14.04

I updated the system with apt-get upgrade and did a restart. Motd shows me 22 updates and 19 security updates, same with /usr/lib/update-notifier/apt-check --human-readable. 15 updates are shown ...
2
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2answers
54 views

passwordless ssh for all machines on a network

I know the basic way to allow key based authentication between two servers is by using these three steps: ssh-keygen ssh-copy-id -i remote_host ssh remote_host Using this approach I need to enter ...
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0answers
20 views

Is there a way to clone/template linux VMs on Hyper-V

I've seen how you can do it with System Center but we don't have a System Center license and there is no plans to get one. I guess I could install a trial for the 60 days just for this purpose but I ...
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0answers
11 views

What configuration change read only task of log files

What configuration changes required in jboss-server standalone.xml file for generating read only server log. Jboss server runing on linux machine. Can I achieve read only task on changing xml ...
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0answers
18 views
+50

How to find which db/collection/query triggers disk read?

We're running a MongoDB 3.0 server with multiple users accessing it and we're experiencing very frequent disk reads by mongod process utilizing our SSD drives to 100% During these peaks the page ...
0
votes
1answer
24 views

Remove locking from executed elf file on linux ext4?

After starting some elf file that is on ext4 filesystem it is locked for writing but can be removed and rewritten. On some other filesystem this behaiveour can be different - i have tested ...
-2
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0answers
16 views

How to kill VM task 'Create Virtual Machine' in VMware EXSI server?

Folks, I tried to create one WIn server VM in ESXI server, But Its status is 'IN PROGRESS' for long time. Please help me kill this task. Create virtual machine 10.200.216.35 In Progress root ...
0
votes
1answer
48 views

Forcing OpenLDAP connections to use STARTTLS not allowing user to login

I have a basic OpenLDAP server running on Ubuntu 16.04LTS which authenticates users perfectly fine but I really wanted to make it more secure so I decided to use STARTTLS and How To Encrypt OpenLDAP ...
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1answer
33 views

How can I allow all users to run mount as root?

How can I allow all users to run mount as root? I know there's a lot of solutions out there recommending the following edit, but it's not working for me. I've edited /etc/sudoers to include: ALL ...
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0answers
31 views

PPTP VPN Connected but no internet [closed]

I'm running a Ubuntu 16.04 Server on a VMWare ESXI Server with its own public IP, I have setup a pptp vpn server which works but only with connected devices. I can't connect to the internet with it ...
0
votes
1answer
43 views

How to verify if an rpm was installed from scratch or upgraded?

we installed the following rpm's via yum on redhat version 5 # rpm -qa --last | head -10 kernel-headers-2.6.18-408.el5 Wed May 18 13:33:59 2016 bind-utils-9.3.6-25.P1.el5_11.6 ...
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2answers
31 views

How to remove SWAP partition, and add back to root partition in cli

I am on Ubuntu 14.04 server with only ssh access into the machine in question. Someone else setup this machine, and they added a ridiculous swap space...a little more than half of the SSD. Here's ...
1
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1answer
25 views

grep command to extract data from a file

I have a file that has this line in it: $n22(s:Tstring) = "252"; I'm trying to write a shell command to grep the file and only return 252. This is what I have so far: grep -o ...
0
votes
1answer
31 views

LVM file locking error after moving extents to new physical volume

On a CentOS 6.7 system, I started getting SMART errors on a disk that was part of a volume group under LVM. So I used the recommended procedure: add a new disk to the system, create a new physical ...
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0answers
22 views

Should NFS consecutive writes then reads be consistent across hosts?

For $work I am writing several thousand files to a directory mounted on NFSv3. Once the process writing the files has completed, a process on another machine starts to read them. The problem I am ...
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0answers
14 views

Walking an SNMP tree: any way to include additional information?

I'm exploring an embedded device that has a custom MIB. The MIB has nicely-written DESCRIPTION properties for each OID. Unfortunately, snmpwalk seems to ignore the DESCRIPTION properties. Looking ...
1
vote
1answer
37 views

DNSsec responses from named / bind intermittently has RRSIG records missing

Responses from our nameserver are intermittently missing RRSIG records despite being requested. All other associated records (such as A records) are returned OK. Consequently dnsssec validation fails. ...
0
votes
1answer
51 views

MQTT certificates verification fails

I'm been desperately trying to get my MQTT clients to connect to my MQTT broker which is set up with a certificate from a CA (Letsencrypt). To be able to get the CA certificate, I've used the ...
0
votes
1answer
20 views

Build rpm on CentOS for RHEL

I need to install some software which is not available pre-compiled on a client's RHEL Server. I decided to create a rpm for easier installation on multiple systems. As i have no RHEL subscription, ...
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votes
0answers
36 views

MYSQL very slow on a huge server

I have an ecommerce with a lot of products (more than 100K). And around 2000 visits every day. My Database is very slow, but I have a huge server (for this amount of visits). Server: 16GB Memory ...
-1
votes
0answers
8 views

File /etc/ld.so.nohwcap is missing in Debian 7 [migrated]

What is the file /etc/ld.so.nohwcap used for?. In my machine (Debian 7), this file is not found. Therefore, Which package or library this file belongs to?
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0answers
13 views

No space left on device + ubuntu [duplicate]

I've been working with an Ubuntu server machine with a HD of 60GB and a memory of 16GB. I've been running WSO2MB in the server in order to publish and consume messages. I got this strange issue where ...
0
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2answers
36 views

How can I detect what occupied the disk space

I have my external disk mounted in /log and I'm not able to write into it anymore because it's full. When I check with df -h: Filesystem Size Used Avail Use% Mounted on udev 3.7G ...
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0answers
24 views

ZFS Snapshot showing unreachable inside snapdir

I am using ZFS with Linux 3.19.0-58-generic. I have created some snapshots, but when I cd into these directories after one point it becomes unreachable, what does that mean ? Is there any workaround ...
-1
votes
0answers
5 views

setting default total server quota and server admin quota virtualmin

I am trying to find out how to configure the default settings for creating a virtual server in virtualmin. When I click 'edit virtual server', underneath 'quotes and limits' there is 'total server ...
-4
votes
0answers
36 views

Cannot delete corrupted directory on linux [closed]

earlier I run BleachBit as root on a personal server for claiming some free space. During wipe free space it seems like it crashed and I had to restart the machine. After the boot I have a corrupted ...
1
vote
1answer
155 views

Huge performance penalty in gbit link with ip forwarding / masquerade through clear VPN tunnel

I have a problem with IP forwarding between my home computer and a remote server (from online.net). My home connection is a 1 Gbit/s FTTH and the remote server has a 2.5 Gbit/s bandwidth. The context ...