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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, ...).

263 questions
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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 our customers unwisely following these tutorials,…
Phillipp
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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 see with a monitoring tool that there are at the…
User-N
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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 question is how I isolate each of these VirtualHosts from…
JesperB
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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 especially looking for a possible misconfiguration…
sa289
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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 stops responding, you can't SSH in because it times…
Wyatt
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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 talking about sites like bluehost, rackspace,…
esilver
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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 easy_install and everything is groovy: The hg executable…
Leonard Ehrenfried
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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 any dynamic dns services that will work with a…
joelhaus
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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 "page not found?" thanks in advance
Sherif Buzz
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2 answers

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, so we had to make a phone call and time the…
MrChrister
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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. That provides good isolation. Let's assume that…
Sebastian
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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 host i have a difficult time finding a host i like…
user274
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4 answers

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 all subdomains for that domain. If I want to…
PenguinCoder
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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" anymore. Server logs show: mod_fcgid: can't apply…
duenni
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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 they end up in the intended recipient's junk…
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