To use the Piranha Configuration Tool you will need at minimum a text-only Web browser. If you start a Web browser on the primary LVS router, open the location http://localhost:3636. You can reach the Piranha Configuration Tool from anywhere on through a Web browser by replacing localhost with the hostname or IP address of the primary LVS router.
When your browser connects to the Piranha Configuration Tool, you will notice that you must login to access the cluster configuration services. Enter piranha in the Username field and the password set with piranha-passwd in the Password field.
Category Archives: Servers
2. LVS: What is an LVS? Can I use an LVS?
A Linux Virtual Server (LVS) is a cluster of servers which appears to be one server to an outside client. This apparent single server is called here a “virtual server”. The individual servers (realservers) are under the control of a director (or load balancer), which runs a Linux kernel patched to include the ipvs code. The ipvs code running on the director is the essential feature of LVS. Other user level code is used to manage the LVS (set rules for services handled, handle failover). The director is basically a layer 4 router with a modified set of routing rules (i.e. connections do not originate or terminate on the director, it doesn’t send ACKs etc, it’s just a router).
via 2. LVS: What is an LVS? Can I use an LVS?.
The director uses 3 different methods of forwarding.
- LVS-NAT based on network address translation (NAT)
- LVS-DR (direct routing) where the MAC addresses on the packet are changed and the packet forwarded to the realserver
- LVS-Tun (tunnelling) where the packet is IPIP encapsulated and forwarded to the realserver.
Zero-Knowledge data backup, sync, access, storage and share from any device
Pingdom Web site monitoring for 100% uptime. Measure your downtime.
Pingdom Web site monitoring for 100% uptime. Measure your downtime..
How it works
The Pingdom service monitors websites and servers from multiple locations on the Internet, making sure that they are working. You can use Pingdom to monitor both your public and password-protected websites, your FTP servers, your email servers, and any other kind of service that should be accessible from the Internet.
If your site stops working, Pingdom will alert you immediately. Like a watchdog.
I signed up for the free account that monitors a single server. We’ll see how well this works.
Cloud Hosting – Simple Hosting – PaaS – Gandi.net
How it works
Each instance gets its own container that contains its database services, the program language interpreter, and its own web server.
Client requests arrive at a load balancer that distributes traffic to http proxies. These proxies benefit from a very efficient local cache: for each request, they verify whether or not there is a more recent version already in the cache. If it is present, the reply is automatically sent to the client. The cache’s “time to live” depends on the “max-age” http header.
Ostiary
If you leave such programs running all the time, you take the risk that someone is going to use an exploit on you before you have a chance to apply a patch. For some purposes, this is an acceptable – even necessary – tradeoff, but it would be nice to enable them only when actually needed, to minimize the risk. And for other purposes, ssh et. al. are overkill. Perhaps you only really need to remotely initiate a limited set of operations. In this case, you don’t need a shell prompt, just a way to securely kick off scripts from elsewhere.Enter ‘Ostiary’. It is designed to allow you to run a fixed set of commands remotely, without giving everyone else access to the same commands. It is designed to do exactly and only what is necessary for this, and no more. The only argument given to the command is the IP address of the client, and only if the authentication is successful.
via Ostiary.
Norway’s Fjord-Cooled Data Center
The Green Mountain Data Center is located on the shores of the island of Rennesoy, inside concrete buildings within caves carved out of the mountain. Racks of servers will now fill underground halls that once stored ammunition for NATO.
via Norway’s Fjord-Cooled Data Center » Data Center Knowledge.
Antec Eleven Hundred
AnandTech – Gallery – Antec Eleven Hundred – 6 Photos.
Hardware porn. I think Microcenter sells this case.
EGroupware
EGroupware is the leading Online Collaboration Tool and the top choice for big enterprises, small businesses and teams within and across organizations all over the globe.
via EGroupware: Home.
Navicat – MySQL Overview
Navicat for MySQL is available for three platforms – Microsoft Windows, Mac OS X and Linux. It connects users to any local/remote MySQL Server, providing several database utilities such as Data Modeling Tool, Data/Structure Synchronization, Import/Export, Backup and Report, to facilitate the process of maintaining data.
via Navicat – MySQL Overview – The Most Popular SQL Server management,