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Frequently Asked Questions

Why can't I run more than <n> virtual hosts?

Apache Server Frequently Asked Questions
You are probably running into resource limitations in your operating system. The most common limitation is the per-process limit on file descriptors, which is almost always the cause of problems seen when adding virtual hosts. Apache often does not give an intuitive error message because it is normally some library routine (such as gethostbyname()) which needs file descriptors and doesn't complain intelligibly when it can't get them.

How many virtual hosts can I run and where?

RabbitMQ - Frequently Asked Questions
There is no hard limit to the number of virtual hosts that can be configured within a RabbitMQ cluster, save available disk and memory resources. Virtual hosts within AMQP are decoupled from the physical network layout: one virtual host can be accessed from multiple clustered brokers, just as many virtual hosts can be accessed within a single broker. Virtual hosts act solely as a namespacing mechanism for AMQP resources.

How can I fix the error message "<key n> error, index not opened"?

Answers to Questions
The 'key' control function was used to access a channel that had not been opened. Open the index to a channel, then it will work. This message appears when you enter a file in verify mode when all records in the file have been verified. Press {FIELD REL} and try opening another file.

How many virtual machines can run per processor?

Virtual Server 2005 Frequently Asked Questions
The number of virtual machines running per host depends on several things, including physical memory, processor, and workload running in the guest. With Virtual Server 2005 R2, you define the amount of memory available to a virtual machine, and that memory allocation can be altered to reflect the needs of the virtual machine.

I got the error message "<key n> error, channel not associated with index". Why?

Answers to Questions
You attempted to access a channel via the 'key' control function. The channel number indicated was not assigned to an index. Assign the channel number to an index and it will work.

Who are the Hosts?

Frequently Asked Questions - GROWW - Grief Recovery Online
All of our hosts are volunteers, and believe in giving back what has been given to them: love, understanding and guidance on the path to healing. Our host's all PROMISE this to you and to GROWW. Read our Host Biographies and learn about our incredible hosts. To be in compliance with Chapter 496, Section 496.

Do you support access to virtual hosts?

VoiceGenie Developer Workshop - FAQ
Yes. The VoiceGenie server sends the 'Host:' header in the request to external servers. This is a commonly supported extension to HTTP/1.0, and is a recommended update to HTTP 1.0 clients and servers in RFC 2616.

How do I use virtual hosts with IIS?

Configuration
This is my working config under IIS 4.0 end Resin1.1b6 <caucho.com> <http-server> <error-log id='log/default-error.log'/> <!-- -- Each virtual host has its own applications, sessions, -- and servlets. You must duplicate the configuration for -- each host. Each host ignores the configuration in -- the outer block. --> <host id='192.168.0.2'> <app-dir>d:\inetpub\wwwroot\inverko</app-dir> <error-log id='d:\inetpub\wwwroot\inverko\error.

Can applications that run on CLDC-compliant virtual machines run on other Java Virtual Machines?

J2ME CLDC and K virtual machine: Frequently Asked Questions
Yes. CLDC-based applications can execute in other Java Virtual Machines, provided that the required CLDC libraries, profiles, and/or optional packages are also available.

Why can't I use SSL with name-based/non-IP-based virtual hosts?

SSL/TLS Strong Encryption: FAQ - Apache HTTP Server
The reason is very technical. Actually it's some sort of a chicken and egg problem: The SSL protocol layer stays below the HTTP protocol layer and encapsulates HTTP. When an SSL connection (HTTPS) is established Apache/mod_ssl has to negotiate the SSL protocol parameters with the client. For this mod_ssl has to consult the configuration of the virtual server (for instance it has to look for the cipher suite, the server certificate, etc.).

Is a virtual machine all that's needed to run a small application?

J2ME CLDC and K virtual machine: Frequently Asked Questions
No. A virtual machine requires a set of core libraries to run applications. Some of these libraries are packaged as a part of a CLDC implementation along with the virtual machine. In addition, the capabilities of CLDC can be extended by adding profiles such as the Mobile Information Device Profile (MIDP) and/or optional packages.

How do I setup email service for my virtual hosts?

Email F.A.Q.'s
Normally when you run the "vaddvhost" command you do not have to do anything else, but to double check that email service is set up read the below section. NOTE: This section requires modification of your sendmail.cw file. Because this is a very important and somewhat complex file, we recommend you make a backup copy before making any changes. To add email service for your virtual hosts, SSH (secure telnet) to your virtual server and follow the steps below:

Can I run Direct3D applications inside Virtual PC or Virtual Server 2005 R2?

Virtual Server 2005 Frequently Asked Questions
No. Virtual Server 2005 R2 does not support Direct3D. Virtual Server emulates an S3Trio64 video card for 2d video. Virtual machines do not receive additional protection running in a virtualized environment. Each virtual machine is its own entity and needs to be patched individually.

Which operating systems can be run as guests in Virtual Server 2005 R2?

Virtual Server 2005 Frequently Asked Questions
Windows Server 2003 Standard Edition (Windows Server 2003 SP1 support for Virtual Server 2005 R2 only) In April 2005, Microsoft announced future plans to support additional third-party operating systems, including certain Linux distributions, on Virtual Server 2005 R2. More details of the specific guest operating systems that will be supported and the means of support will be provided at a later date.

What happens with hosts that no longer run BOINC?

BOINCstats/BAM! | F. A. Q.
These hosts can be removed in the host list. Systems that do not connect to BAM for over a month are removed automatically. BAM! can only find accounts when the email address, the username and the password of the project are the same as those of BAM!. Check these at the project, and change it when needed. Remove this project from your BAM! account (you can do this on the "Project list" page) en wait until all your host detached from the project.

Why can't hosts on a NATed interface talk to hosts on a bridged interface?

m0n0wall Handbook
This frequently happens when someone wants to bridge an interface to their WAN to use it as a DMZ, and wants to put all of the hosts on their LAN interface behind a NAT. This is actually a fairly reasonable and natural thing to want to do. The problem here is that ipnat and bridging (at least as implemented in FreeBSD) don't play well together.

I can't keep my <whatever species>. What do I do? Let it go?

Welcome to McMartinVille
No! Do not release a captive animal back into the wild, especially if it's a species that's not native to your area. The animal will either die, in which case you didn't do it any favors; or it won't, in which case you have just introduced an exotic species into your local ecosystem. This Is Bad; the most drastic example among herps is the giant toad (Bufo marinus), which created ecological chaos when it was introduced into Australia for pest control (and it didn't even work for that).

Who hosts your website?

FAQ | dooce ®
A company called Liquidweb hosts this site. I have been incredibly happy with their service. They have pretty reasonable hosting packages, and have been very responsive to my technical problems and neediness. A big shout out goes to Mike N. at Liquidweb. Thanks for being so nice! I'm surprised you haven't been reported to child welfare with how public you are about some of the things you think and do regarding your daughter. Paper towels are very dangerous for your daughter to chew on.

I can't get any of these hosts to work! What's wrong?

newzbot.com: Frequently asked questions
Several things could explain this. You may be behind a firewall which restricts outbound NNTP to only a select number of hosts. You may have your newsreader configured incorrectly. Your connection to the Internet may have just exploded. It's also possible that every site on my list has expired. The latter is highly unlikely, but if you think this is the case, wait a week and then check my page again.
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