This document outlines how to utilize RPMs to grant access to the
Steadfast Staff access to your server.
ADDING THE CENTOS-STEADFAST REPOSITORY
You can install an RPM to your system to automatically add the
repository data to the yum configuration.
There are no automated backups taken for Virtual Machines, so you will
need to ensure your own data is backed up using the system provided
within the Control Panel.
CREATING A BACKUP
Go to your OnApp/VM Control Panel's Virtual Machines menu.
Starting with CentOS 6.8, a newly introduced update to NSS causes
certain applications to be unable to connect via TLS using GCM ciphers
on virtual machines. This article describes the technical problem and
how to apply the solution.
SYMPTOMS AND DETECT...
This article explains noteworthy differences and improvements between
CentOS 6 and CentOS 7 to help in deciding which version to use.
WHAT IS CENTOS 7?
CentOS 7 is the most recent major release of the CentOS Linux
distribution. It is based on Red Hat E...
This article explains some considerations when choosing an operating
system for your dedicated server or cloud VM. If you have any
questions or need advice, feel free to contact our sales or support
NARROWING YOUR LIST
The first thing to conside...
Certain CPU-intensive applications (trading applications in particular) will cause "clock drift" on Windows systems. Severe enough clock drift will cause Windows to re-sync with the system's hardware clock (also know as RTC, or Real Time Clock). Thi...
Creating a Virtual Machine
Virtual machines are created from templates. We provide a number of
supported configurations, similar to those available for dedicated
servers, including CentOS, Debian, and Windows, along with various
Control Panels. To creat...
This article describes an issue where Debian 8.x VMs and Ubuntu 14.04
VMs running 3.x kernels will crash after running for exactly 5 minutes
when running on Xen 4.8-based hypervisors.
This issue is caused by a bug in some 3.x kernel s...
DNS resolvers are used to look up IP addresses, mail servers, and
other information related to a domain name. Resolvers are required to
use the Internet effectively. This article describes the resolver
configuration for servers hosted with Steadfast. A ...
On February 11th, 2011, we deployed a new filtering solution based on SpamExperts, which provides additional redundancy and IPv6 support, as well as much more granular control over filtering and user access. This documentation explains some of the core f...
When you assign an internal IP to your Virtual Machine you will initially only be able to access other IPs in the same subnet, which would be all other VMs in the same cloud. To access other servers on our network, including the backup systems, follow th...
This document describes how to connect to the Steadfast Networks VPN
server for accessing the Internal Network and IPMI remote server
Access to the VPN is freely available to all customers with a service
that is provides...
Custom templates can be used to quickly deploy custom systems and
configurations. If you have a set configuration for your web servers,
you only need to set them up once, then save the template, and you'll
be able to deploy future web servers almost in...
Virtual machine storage is provided by disks. A disk is a partition of
a data store that is allocated to a specific virtual machine. Disks
can be assigned as standard or swap disks. They can also be set as
primary, which means the disk is used to boot ...
You can adjust CPU and RAM resources for all VMs. Some VMs can have
their CPU and RAM adjusted without needing to be powered off using the
"resize without reboot" option.
Windows 2008 and Windows 7 VMs can be adjusted without rebooting;
OnApp allows hot and cold migration of virtual machines between hosts
that share common data stores. Hot migration means moving a virtual
machine while it is running. Cold migration means shutting down a
virtual machine, then migrating it and bringing ...
How to order control panel licenses for your VM
Prerequisite: You must have created a Virtual Machine (VM) before you can license a control panel for it. Please see Creating a Virtual Machine for more information.
1) Go to https://manage.steadfast....
In March 2013, the Open DNS Resolver Project  identified many IP
addresses on our network that were of moderate to severe risk of
participating in a DNS amplification attack. This attack queries name
servers for large results using a fake source addr...
In 2018 we have seen a significant increase in reports of
amplification attacks that take advantage of the LDAP protocol over
UDP (CLDAP). This attack queries LDAP servers for large results
using a fake source address. This request causes the response to...
In 2018 we have seen a large number of DDoS attacks making use of
unsecured memcached services running on the internet. On some
Linux distributions memcached servers default to listening on all
network interfaces, including those facing the internet. Ex...
In Febuary 2014, the Open NTP Project  identified many addresses on
our network that were of moderate to severe risk of participating in a
NTP amplification attack. This attack queries NTP servers for large
results using a fake source address. This ...
Recently, a large number of DDoS attacks have begun to make use of
unsecured SNMP services running on the Internet. SNMP services have a
default community (authentication name) called "public" which can be
used to return some read-only monitoring statis...
Spamhaus provides a set of managed block lists to assist with
identifying and blocking IP addresses and domain names that are likely
to send out spam or cause malware infections. These lists are
available via the spamhaus.org [https://www.spamhaus.org] w...
If your server or VM is frequently running out of memory this article
should be of great assistance to you and will guide you through
diagnosing what the issue is as well as listing some possible fixes.
First of all, to see how much memory you are cur...
There are a few common ways to restrict SSH access to your server but
still allow our technicians to access your server.
CHANGED SSH PORT OR REQUIREMENT TO USE SUDO OR SU
In this case, please do the following:
* Log into the management interface [h...
If required, you can instruct OnApp to make sure a VM is never booted
on the same hypervisor as another specific VM. This may be important
if, for example, you have two name servers or a load balanced web
server, and you need to keep VMs on separate ph...
cPanel/WHM is available as a pre-installed template for CentOS 6 and CentOS 5. Make sure your VM meets the minimum system requirements: cPanel recommends at least 10% CPU (we recommend 5% on each of 2 cores), 512MB of RAM and 10GB of disk space.
InterWorx is available as a pre-installed template for CentOS 6 and CentOS 5. Make sure your VM meets the minimum system requirements: 10% of CPU (5% on each of 2 cores is recommended) and 256MB of memory.
Set up an InterWorx Virtual Machine by sele...
You can download the Litespeed Web Server from the Litespeed Web Site.
The installation instructions are fairly detailed, so it is most efficient for us to point you to the official documentation. Our support staff can assist you with installation of ...
Windows has some particular issues and qualities that don't always mix
well with our virtual environment, so we have noted some specific
directions relating to Windows based virtual machines here.
Linux VMs can be deployed almost instan...
What is Load Balancing?
Load Balancing allows for you to spread connections for various applications between multiple VM’s. This allows you to add additional infrastructure redundancy and capacity between VM’s on different Hypervisors.
How can I en...
This article provides current support information for Spectre and
Meltdown on the Steadfast Public Cloud.
Some brief contextual information:
* Spectre is also known as CVE-2017-5715 and CVE-2017-5753, and
referred to in the Xen advisory by the names...
Installing/Using the CloudFlare cPanel Module
1. Sign-up for a CloudFlare Account: https://www.cloudflare.com/sign-up.html
2. Follow the up-to-date install instructions here: https://www.cloudflare.com/wiki/Cpanel
3. Once it is installed, you can s...
Default settings for connecting to a remote server are typically fine
for most users, but those who require multiple monitors for their
sessions, such as traders or system administrators, may need to
configure RDP to use multiple monitors in their remot...
Newly set up Windows servers can be connected using Remote Desktop
Connection. This transmits your desktop across the Internet, allowing
connection from a remote location.
CONNECTING FROM WINDOWS XP
If you are not running the most recent version (7....
With the Steadfast Cloud Platform you can set firewall rules for the
network interfaces of virtual machines. There are two types of
ACCEPT defines the types of packets which will be accepted by a
DROP specifies th...
Administrators in OnApp have full control over the lifecycle of Virtual machines. Virtual Machines can be in the following states:
Created: A machine is created when you successfully "Add New Virtual Machine" from the Virtual Machines menu, having se...
This article is a reproduction of a standard Steadfast Networks
welcome email sent to new cloud platform customers. If you have lost
your welcome email, you can use this information as a reference for
service features and add-on services you are eligibl...