6 replies to this topic

[mahdy_sharifi]

Hello :

Is there any negative affect coldlinux on High Rate Website ?
for example you have any website with 1000 visitor per day , and often this visit and visitor increased , Increasing visitor equal increasing eating server resource , and I think colodlinux prevent this , So have negative affect to website.

Can You explain is this True ?

Regards

[Steven]

Hello,

On our shared servers that have cloudlinux installed it is set high enough were bursts and such should not cause an issue. If it is a continued usage and the resources do go past the limit, then yes it can affect visitors not being able to get to the site. However, at that point the account should be moving to a VPS or other solution. However, with that said, cloudlinux is best in shared or multi-account system to prevent one account from taking all resources and causing other sites not to respond. Cloudlinux also increases security for scripts from other accounts on the server.

In a VPS, cloud, or dedicated environment, cloudlinux may not be needed unless it is a multi-account server and you want to prevent an account from taking all resources and preventing spreading of exploits. Also, in such a system environment you can control what accounts get what resources. (though for now in hsphere that needs to be done directly at the server level.)

Cloudlinux also is not restricted to just cloud servers, any cent os 5 server can run it. So with that said, I'm going to move this to the general questions forum.

[iseletsk]

mahdy_sharifi said:

Hello :

Is there any negative affect coldlinux on High Rate Website ?
for example you have any website with 1000 visitor per day , and often this visit and visitor increased , Increasing visitor equal increasing eating server resource , and I think colodlinux prevent this , So have negative affect to website.

Can You explain is this True ?

Regards

One way to think about what CloudLinux adds is QoS. If you have a single web application running on a server -- it will not help, nor will it limit that site.
Yet, once you have two or more websites or web applications, CloudLinux will let you setup QoS on each of them.
Imagine you have shopping cart, forum & blog on your site. While most of the time most traffic comes to your shopping cart -- you might have your blog slashdotted, and that will bring down the whole server.
With CloudLinux you can say:
cart gets 90% of CPU (note, you can overcommit)
blog gets 10% of CPU
forum gets 10% of CPU

This way -- no matter how heavy is the load on your blog -- your shopping cart will still be fast & accessible.

[mahdy_sharifi]

Hello :

Thank you Igor ...

- For Example I have 100 user/Domain on any server , Can I define Different Limitation server resource for each user/Domain ? for example , user1 get 10% Max Cpu/Ram , user2 get 15% and ect ?

- what happen when user reach to Max Cpu/Ram usage limitation ?
Is there any way to restart their Process (Apache/SQL/DNS/Mail) ?

Thank you

[CH-Jonathan]

Hello,

I'll try and answer your questions inline (I'm sure Igor will be along to respond as well).

1. You can do this somewhat - but it gets a bit tricky to manage - especially when you consider having the ability to add/remove domains on the fly. However, as I understand it - LVE's don't work on a per user level, but rather per domain. The way we've set up our systems is by assigning a flat, server-wide default that most sites can live with without respect to any given site.

2. LVE's only affect the web-service, not MySQL, Email, etc. However, in cases where the limit is reached - they will get a 'we're busy' page that will instruct the users to check back shortly (I'm not sure if it's customizable or not). Once the resources used are below tolerance - the message will stop being displayed and the site will load as normal.

It's behavior can somewhat be related to mod_security.

mahdy_sharifi said:

Hello :

Thank you Igor ...

- For Example I have 100 user/Domain on any server , Can I define Different Limitation server resource for each user/Domain ? for example , user1 get 10% Max Cpu/Ram , user2 get 15% and ect ?

- what happen when user reach to Max Cpu/Ram usage limitation ?
Is there any way to restart their Process (Apache/SQL/DNS/Mail) ?

Thank you

[mahdy_sharifi]

Thank you Jonathan For your Answer .

and my other Question : :confused::rolleyes:

Is cloudlinux flexible to limitation Resource ? for example Can Server admin limit RAM (memory) like as limitation CPU ?


Thank you
Regards

[CH-Justin]

Hello Mahdy,

We meet once again today :). Yes, that is possible with CloudLinux.