Questions tagged [shared-hosting]
Hosting setup whereby a server is shared among many different customers. When compared to VPS or a dedicated server, this generally means that each customer has less resources available and more restrictions are in effect as to what a customer can do on the server (install software or not, ...).
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Tuning Apache2 prefork MaxClients ServerLimit
I have a machine with 128 GB Ram that is using Apache2 as Webserver (in this machine there is no Database Server, the Database Machine is a 64 GB Ram machine that can handle 2000 max connections). I ...
24
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8
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Restrict a Linux user to the files he owns
Imagine a server setup of a shared webhosting company where multiple (~100) customers have shell access to a single server.
A lot of web "software" recommends to chmod files 0777. I'm nervous about ...
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3
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Isolating Apache virtualhosts from the rest of the system
I am setting up a web server that will host a number of different web sites as Apache VirtualHosts, each of these will have the possibility to run scripts (primarily PHP, possiblu others).
My ...
9
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8
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Multi-site hosting - important vulnerability being missed to secure sites from each other?
EDIT #2 July 23, 2015: Looking for a new answer that identifies an important security item missed in the below setup or can give reason to believe everything's covered.
EDIT #3 July 29, 2015: I'm ...
7
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3
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What are some ways to prevent user cron jobs from crushing the servers?
It happens fairly frequently that user cron jobs on shared servers all run at the same time and get caught in contention (near as I've been able to tell). So load explodes, Nagios is angry, Apache ...
7
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3
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Where can I find a list of IP addresses of hosting providers?
I am attempting to fend off a spam attack against a web api I run and would like to obtain a list of IP addresses of public web hosting providers from which spammers are launching their attacks. I'm ...
6
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1
answer
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Acessing a mercurial repository on a shared host over SSH
I have a shared hosting account with SSH access. I have set up a virtual Python installation and have copies of the system folders in $HOME: ~/bin, ~/lib ...
I have installed mercurial through ...
5
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5
answers
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hosting IP change, how much downtime to expect?
i'm moving my hosted site (same host) to a static IP, I understand there will be some downtime due to DNS caching - does anybody have any tips how to minimize this time and to avoid my users seeing "...
5
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4
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Dynamic DNS for Shared Hosting - Does it exist?
It seems that certain home router firmware is designed to work with Dynamic DNS services (e.g. noip & dyndns) to serve a subdomain from a server behind a consumer ISP. On a similar note, are there ...
5
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2
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746
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Why did this website DNS change fail in some parts of the US
Background
We switched shared hosts from a local mom and pop to crystaltech. The site was all copied over and ready for the DNS change. The mom and pop site offered no tools to manage DNS ourselves,...
4
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2
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Alternatives to avoid domain from being blacklisted
We outsource our web and email hosting to a web hosting company and occasionally I get complaints from our clients or internal staff that mail from our domain does not reach the intended recipient or ...
4
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3
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Enabling phar on Dreamhost shared hosting?
So, i'm trying to use Silex on my dreamhost account and I'm getting an error
Fatal error: Class 'Phar' not found in blah blah blah...
when I try to include the Silex.phar file. When I look at ...
4
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5
answers
619
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ASP.NET Future on linux?
I was wondering. What do you guys think about ASP.NET future on linux? I dont know much about IIS and i know some things about linux. I dont want to program anything in php and while searching for ...
4
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4
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Is a wildcard SSL required for a single subdomain?
A typical SSL cert is based on a common name for the domain (domain.com) sometimes (www.domain.com) as well.
I understand what a wildcard cert is used for (*.domain.com) and it would/should validate ...
4
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1
answer
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Security in shared hosting vs VPS 'virtual appliances'
I have to change my hosting provider. Right now I have a shared hosting account but I'm considering trying the LAMP stack appliance from turnkeylinux.org.
I'm very comfortable with using linux, I've ...
4
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2
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mod_fcgid: can't apply process slot after software upgrade
I'm on a shared hosting plan with a Wiki and a Bulletin Board installation. After upgrading the Wiki to the latest release my users are not able to upload files with the integrated "media manager" ...
4
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2
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How can I override global PHP.INI settings on shared hosting?
I have sharring hosting account on Linux Apache PHP with JustHost.
In my account exists a global php.ini that only admin of hosting company can access.
My problem is that when I run php script the ...
4
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2
answers
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Multiple domain SSL certs
We have a product (hosted PHP app) which we will be providing SSL certs to for people along with some hosting.
We are in full control of the hosting environment setting up the users vhost config, ...
4
votes
2
answers
265
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When do I need more than shared hosting?
What are the guidelines? While the answer could be "when your webpage or queries return slowly -- that answer doesn't quite work for me. What are your reasonable expectations for shared hosting? How ...
4
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3
answers
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PHP parse error appearing on shared hosting environments
Has anyone else seen this crop up a lot recently? I've had several sites go down with this error.
Parse error: syntax error, unexpected '<' in /home/public_html/index.PHP on line 39
It's caused ...
4
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0
answers
583
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Shared hosting: Apache RewriteRule [P] flag security concern
I want to setup PHP-FPM with Apache in a shared hosting environment. The recommended way is to use mod_proxy_fcgi.
Each customer has his own FPM pool, running PHP processes under his own system user. ...
3
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7
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1k
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Why do hosts prefer Linux to Windows Server?
So far I see a HUGE majority of hosts provide only Linux shared hosting, providing Windows only to VPS (or even to only dedicated servers). Why is it so? While Windows is a lot more expensive than ...
3
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5
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9k
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Setting up an SPF record for a shared hosting service with lots of email gateways
My website is on a Hostgator shared host, and I need to set up SPF for my email so my outgoing emails won't get bounced. So, I have to add a TXT record to the DNS for my domain, listing all possible ...
3
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4
answers
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Is there any "best practice" for a shared servers?
I'm currently in charge of 2 really big servers (128GB Ram & 32 8-code Xeon CPU each) at my university running Ubuntu 12.04. Students are suppose to use them for big data analysis. We want every ...
3
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3
answers
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DNS PTR record when domain on shared IP address
I own a typical shared IP hosting plan and domain.
I can modify the DNS of the domain from the control panel.
The mailserver shares the same IP address, so my typical DNS config is:
www.mydomain.com ...
3
votes
3
answers
244
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Need a helpful/managed VPS to help transition from shared hosting
I am looking for a VPS that can help me transition out of a shared hosting environment.
My main OS is Ubuntu, although I am still new to the linux world. I spend most of my day programming PHP ...
3
votes
3
answers
610
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Shared webhost IP blacklisted and is stopping my legitimate emails sending
I am a customer with a webhost and my account is on a shared server. The problem is, it looks like one of the other customers on the same server has gone and got the shared IP blacklisted as spam/...
3
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2
answers
2k
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What's the difference between www & public_html folder?
What's the difference between the www & public_html folder on the same server on my shared linux hosting. I've seen data is same on both of these folders. Is one of them just a redirect or is the ...
3
votes
3
answers
802
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How to change web host for my small site with minimal downtime
Company S is a small mom and pop host that can't keep our site running for more than a couple weeks at a time. They have suggested we find a better home. So we are moving our site to CrystalTech for ...
3
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2
answers
10k
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What does apc.mmap_file_mask really do?
I want to use APC in a shared environment, but the main problem is of course, opcode sharing.
To overcome this, I've thought about using different apc.mmap_file_mask for each user (they're chrooted ...
3
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3
answers
522
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Security of shared hosting
What are some of the security risks involved with using shared hosting services such as godaddy inmotion and fatcow?
3
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2
answers
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Is hosting my websites and databases with different providers a bad idea?
I'm trying to find a home for three ASP.NET 3.5 websites using three respective SQL Server 2008 databases. I've found one possible solution where I host the websites on a "semi-dedicated" environment ...
3
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2
answers
854
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How did shared hosting providers ensure user isolation before containerization went popular?
Around 2000-2010, shared hosting was extremely popular as a cheap solution (sometimes a few $ / month, or sometimes even free for just a few MB) for people starting blogs, small websites, e.g. using ...
3
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1
answer
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How does IP blacklisting work on virtualized/shared hosting?
I have read that many blocks of IP addresses associated with Amazon EC2 have been blacklisted by various ISPs. Therefore, even if you never sent spam yourself, emails you send from an Amazon instance ...
3
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2
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Once mail hosting through Gmail is setup, is it easy to change web hosts?
I have a personal domain name, pointing to a simple cPanel-type shared hosting account. About six months ago, I decided that I wanted to use Google Gmail for hosting my domain name's email.
In my ...
3
votes
1
answer
900
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How to disallow use of disable_functions in?
I'm obviously not the first one to have this problem, but I cannot not find an answer to this situation.
I want to lock down PHP a bit, more specifically the use of disable_functions. The environment ...
3
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2
answers
1k
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Moving from shared cpanel hosting to non cpanel VPS - What should I know?
I'm currently looking into migrating a few sites from my shared cpanel hosting to a VPS. Got to the point where I want to do more and have been learning about some system admin stuff through my ...
3
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1
answer
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Compare Shared SQL Server vs VPS SQL Server
I'm looking at two different options to host the databases of my websites.
1) I can use the Shared SQL Server 2008 offerings of my host company (plenty of space) instead of installing database ...
3
votes
1
answer
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PostgreSQL or MySQL for shared hosting
I want to offer SQL shared hosting for customers.
Ideally I'd like:
access isolation (one user shouldn't see information about other user's databases)
SQL disk space quota per SQL user
ability to ...
3
votes
2
answers
544
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Host Primary Domain from a subfolder [closed]
I am having a problem making a sub directory act as the public_html for my main domain, and getting a solution that works with that domains sub directories too.
My hosting allows me to host multiple ...
3
votes
1
answer
398
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Installing CNProg on shared hosting (1and1)?
I have shared hosting on 1and1.
I have shell access but don't have root access.
Is it possible. To install CNProg, (Which is a SO Clone in Python) on that kind of hosting?
If not, can I use Ubuntu ...
2
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5
answers
5k
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Why does APC (or similar) cause performance problem for shared hosting?
I'm using shared hosting, and I can't enable APC. There was a thread about that here, and the only reason suggested was for security (php-cgi vs mod_php). I queried the host, and they said it was due ...
2
votes
2
answers
185
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Run sensitive command (including passwords) on Linux without exposing data
I have an account on a shared web host which allows me to work on the server via SSH. As I have some problems installing Magento using the web installer I switched to the commandline installation. The ...
2
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5
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3k
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Finding out who hacked my site [duplicate]
Possible Duplicate:
My server's been hacked EMERGENCY
All Joomla! sites hosted on a single server of mine were hacked and had the following code injected into the index.php files throughout ...
2
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3
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On a shared server, how do you run a script / process at startup?
I guess I could have a cron job run every minute, or 5 minutes, and have it somehow check if the process was already running (not sure how to do that).
Would that be the best way or is there another ...
2
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2
answers
791
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What's the most effecient hosting solution for running multiple Pyramid (Python) websites?
In the past, I've written websites in two languages. PHP for smaller sites and Python for larger sites. With this setup, I would run multiple Paster instances to serve each site on a different port ...
2
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2
answers
467
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Multi-site hosting security - ensure no scripts can run as Apache user, but only as each website's user
In setting up a hosting environment with multiple sites that should be isolated from each other, I did the obvious step of having PHP be configured so it runs as the user that's associated with each ...
2
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2
answers
73
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How to prevent use of `w` and `who` on shared webhosts
We are in the process of setting up a hosting machine that clients will have SSH access to. We don't want them to be able to see a list of user accounts, but the problem we have run into are commands ...
2
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2
answers
2k
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How to secure Apache for shared hosting environment? (chrooting, avoid symlinking...)
I'm having problems dealing with Apache configuration: the problem is that I want to limit each user to his own docroot (so, a chroot() would be what I'm looking for), but:
Mod_chroot works only ...
2
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2
answers
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Will shared hosting work for my case?
I need to host a JSF application backed by a NoSQL database (Cassandra, which operates on a cluster of nodes). I'm going to purchase a set of VPS to maintain the database server cluster. But to host ...