Newest vps Questions

Q&A for system and network administrators

PostFix 451 4.3.5 Recipient address rejected: Server configuration

Currently setting up a VPS with DigitalOcean and I've resolved my open relay issue with the following -smtpd_helo_restrictions         =    ...

dns website down after moving the different server

One of the website ie intralifeindia.com was moved from dedicated server to vps server. So i just changed the ip address from domain controls. After doing so emails are working but website not ...

Optimize webserver to handle huge load spikes [duplicate]

Our application is growing fast so now we need to scale the infrastructure to don't slow down the entire website without worrying on how many users we have The backend system is based on many curl ...

How to handle spammy registrations (mostly yandex) (tens in couple of days) [migrated]

We have deployed beta version of our web page (Django) on Digital Ocean VPS. The problem is that week ago started fake registrations, there are mostly from Yandex and mail.ru - russian servers. [] We ...

The arp-scan tool found machine but i can't ping [closed]

I have two VPS that i buyed from one corporation, OS of two VPS is ubuntu and when i ran arp-scan -l on one of the both machine and i can see IP of other machine, but i havn't any type of access to ...

I accidentally deactivated the internet of my VPS (How to enable it again if I lost the connection?)

I accessed the: Control Panel > Network and Internet > Network and Sharing Center. So, I clicked in "Ethernet". Oponed the "Ethernet Status" for me and I clicked in "Disable". So, I lost my ...

root is not able to change permission of folder/files

I need to your help . I am trying to changing the folder/files permissions but it is not working . what is the issue ? i am login on putty with root user. Please help me .

Setting up a VPS to use a VPN, but still allow incoming VNC connection?

I have a VPS setup on Linode. It runs Ubuntu 16.04 and allows me to VNC into it. I want this VPS to route all outgoing traffic through a separate VPN, but still allow me to VPN into it. How does one ...

Configure GoDaddy when hosting via custom port

I rent a VPS / seedbox that happens to offer http file hosting via nginx. Instead of renting another service to host my website, I've configured my current VPS successfully. The catch is that nginx is ...

I want to use the whole space 20GB ( /dev/vda ) to partitions 10GB ( /dev/vda1 )

I want to use the whole space 20GB ( /dev/vda ) to partitions 10GB ( /dev/vda1 ) [root@server ~]# sudo ssm list -------------------------------- Device Total Mount point ----------------------...

Number of domains in vultr?

How many website domains can a Vultr account have? My understandin is Vultr accounts are like VPS in that you can have unlimited domains/websites?

Root Authentication failed after update in CentOS 7

I'm newbie to Server staff, I try use this command via ssh to update CentOs 7: yum update Or yum upgrade But after update i reboot VPS and try to login in via root account then authentication ...

AWS: Attach EBS to Lightsail instance?

Is it possible to attach an EBS drive to a lightsail instance (aside from the one that (appears to be) auto-attached when creating the instance)?

What do Virtual Private Server vs Dedicated Cloud run on?

Before you mark this duplicate I read all the suggestions an none answer my question. I am being told something by a hosting provider, however what they are telling me is contradictory to what I am ...

Use a Single VPS for Multiple Customers

I run a small web development and design business and also offer hosting to my clients. So far, I've been buying very affordable VPS' and using those for my customers. Since many of my customers have ...

How to solve the spam outgoing emails from a VPS? [duplicate]

I bought a new VPS and using WHM i created a cpanel account. After doing some research about why are the emails were going on spam without any reasons and by this i mean : 1. No blacklisted IP, 2. ...

How do I choose a vps or dedicated server? [duplicate]

I'm facing the issue of choosing a service for my company. I have to setup an owncloud server, an email server and a web server. I was thinking of a dedicated server with at least 2x1TB disks for ...

VPS Setup with dovecot and exim with multiple domains email sending issue

I have a VPS with exim and dovecot with multiple domains. Each domain is running a Wordpress site. My main server is running a smarthost relay to another server where port 25 isn't being blocked. ...

linode centos 7 firewalld change-interface command failed

I just build centos7, and tried to setup firewalld, when I type command firewall-cmd --zone=internal --change-interface=eth0 I got error : Error: COMMAND_FAILED I already start it by ...

Subdomain on VPS not working

I am running my site on my VPS. Let's call it example.com. I want to add a subdomain, sub.example.com. I've added an A-record, created the folder /var/www/sub and added the VirtualHost part. My config ...

Server freezes randomly for a few seconds

I am noticing a weird issue, my Ubuntu (web)server randomly freezes, for a few seconds and afterwards recovering again. The server has the following specifications; - 2 vCores of 2,4 GHz - 8GB of ...

Redirection loop with WordPress on a VPS

I have setup on a VPS a WordPress and DNS to redirect a domain name to my server. But I have trouble to hide the IP of the server. In fact when I am redirected from my domain name to the server, the ...

I cannot SSH or Telnet to Windows Server 2012 on VPS

I just bought a Windows Server 2012 on VPS.I can connect it using remote desktop and setup mongodb and access it.But i cannot seem to telnet or ssh to it using Putty. Both ports are open and ...

Should I move Node.js to a separate server, or host it together with LNMP?

I wanted to add some features to my site which would require using Node.js over websockets. So my options are: Install Node on a separate VPS; Install Node on the same server where my websites are. ...

Copy ssh key or create a new one

I have a desktop and laptop that I use for development. I generated an ssh key on the primary machine (desktop) to my vps which uses a passphrase. In terms of best practices or security concerns, is ...

Sentora and 1and1: trouble with DNS MX records [closed]

I have a server with Sentora installed on CentOS 6 and a domain (let's say mydomain.com) bought from 1and1. Here are the settings I made in 1and1 web interface: Name Server Settings Name ...

Ubuntu webserver misconfiguration

We are trying to move our hosted website to our own VPS. I asked the company where we host the server to set up the webserver because it's running Ubuntu and I'm not a Linux expert and didn't wanted ...

vps web hosting performance? [duplicate]

I'm confused about a 1 vCore 2,4 GHz 2 Go RAM SSD 10 Go Local Raid 10 vps capabilities!! Can i use this vps for hosting 4 websites with no problem. To be more specific one of the websites will have ...

Firewall (pfSense) general, and block ssh attacks “newbie”

i am a little beginner in administration. Have an VPS on ovh.com, where i had expect 28 tries in 2 days from different ip's (usually china) to log on my ssh (late centos installed with Centos Web ...

CPU usage spikes when calling website

I have a quick question for something I couldn't find while searching. I'm a total server noob so please don't get angry. When I track CPU usage using ssh top I can the user process causing about 20 ...

how to troubleshoot high CPU usage on VPS?

I have a Cent OS VPS (4GB RAM, 4 CPU Cores) running Apache 2.2 (Prefork) + Php 5.4 + Mysql. Have been experimenting with apache's base configuration and monitoring results using server-status with ...

Is nested virtualization secure?

Is it secure to enable KVM nested virtualization on our (physical) host in order to enable users to run own VMs inside their VPS? Or does it introduce some security issues to our primary host and ...

Comparision of VPS between DO, AWS and Azure

Just for a little history, our product has been currently running on a bunch of DO and Linode and a few AWS instances. Our stack is a Python-Flask Webapp, Mongo(Distributed), Elastic Search, Rabbit MQ ...

Optimize application to handle huge spikes

Our application is growing fast so now we need to scale the infrastructure to don't slow down the entire website independently on how many users we have The backend system is based on many curl calls ...

ovh windows server vps upgrade, disk still 25 gb [closed]

I upgraded my vps in OVH. The upgrade includes a memory doubling from 2 to 4, and doubling disk space from 25 to 50. Memory is indeed growing, but the disk remains oh size - I mean physicall size in ...

Server randomly times out with certiain IP addresses

Our organization has a hosted VPS running CentOS. Randomly we will be unable to connect to it on the client side because the request will timeout. I traced it down to the IP address timing out. To fix ...

Unable to connect VPS server hosted node js code to another provider MYSQL server

I have just bought the unmanaged VPS. I am running a node js application that uses a connection string for mysql database stored somewhere else. The connection between vps (nodejs web) and mysql ...

Internet connection in Azure Classic VM drops

For the past few months I've been having a problem with one of my Azure classic VMs where the internet connection drops out randomly. The virtual machine functions normally but services that connect ...

Very Slow VPS server [closed]

I am junior in server management and I am searching to find out why my server is too slow. First of all, I have to mention its characteristics: 3 vCores 1024MB Ram 80 GB Sata 7,2K HDD I have also ...

enumerate trusted entities for a specified role?

How can I get the trusted entities for the marketingadmin role? thufir@doge:~$ thufir@doge:~$ cat .aws/config [default] output = text region = us-west-2 [profile thufir] role_arn = arn:aws:iam::...

Have Same Data in 2 VPS [closed]

I have two VPS that installed WHM on each, I want to have same data on both of them. Now one of my VPS have data and one of them is empty. There is any solution to i have all my data, database, emails ...

VPS ip address blocked [closed]

I have a Debian based VPS which runned fine until recently. Yesterday, i was working at programming websites when the server just didnt respond anymore. I have done some research and to be short, ...

Jenkins, VPS and VMs

I'm hosting my website on a VPS (by OVH) on which I'm running Debian. The website is live and working at https://example.com. I installed Jenkins on the same VPS, which is live and working at http://...

point subdomain to a directory on the same server

I want to point a subdomain to a directory on my vps Apache/2.4.10 (Debian). I created a subdomain, added A record and ip of my server. Right now when I open it in a browser this subdomain points to ...

Redirect Subdomain to external VPS and SSL from Letsencrypt

i bought a Domain at Strato. I want to Redirect a subdomain f.e. cloud.xyz.de to an external VPS, bought at another Hoster. Because you have to pay for SSL-Certificates at Strato, i want to get one ...

Where I config CNAME in VPS Server without Cpanel

I'm a newbie in linux/server configurations and I'm trying to redirect all subdomains of specific domain to specific url: *.domain.com -> domain.com/test With Cpanel visual support and CNAME I got ...

Debian 8 VPS running kernel 2.6.32 - can it cause problems?

Just purchased a Debian 8 VPS from a2hosting.com. The OS boots into kernel 2.6.32 which is actually quite old. Would this cause issues with software installed on the machine as I try and keep the OS ...

Apache using multiple domains with SSL in only 1

I have an VPS working with apache2. My problem is, i have 2 projects: 1. example.com 2. admin.example.com I have an SSL certificate (only valid for) example.com My problem is, when i access to admin....

More CPUs Mean Faster Server? (Upgrading VPS) [duplicate]

so currently i use a VPS with these specs €5 EUR / Month 1 CPU, 2.5+ GHz Processor 512 MB Ram 30 GB SSD Disk Transfer Unlimited 100 Mbps Connection But i am planning to upgrade to this €80 EUR / ...

Windows VPS slow issue, need help optimizing

I have hypervisor with the following specs: Intel Xeon D 1520 / 4c/8t / 2,2 - 2,6 GHz 64 GB of RAM DDR4 ECC 2133 MHz And I have there 30 Windows Server 2012 (KVM based) VPS created all with 2 cores, ...
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