If I understand you correctly you you are looking for a F/OSS project to do what you are after.
However if you do actaully have a budget to spend have a look at the 3DNS product from F5 Networks. it does the failover you describe and although it works better if it is intereacting with F5's server load balancing product, it can still monitor and react to standard web servers becoming unavailable.
not that I knows anything about these things, but I'd imagine the engine from the Subaru is significantly lighter than the original camaro engine. Probably kinda important when your building a boat
If you read the article it says that the Uranium was caused by natural nuclear reactors and that due to the half life of the substance such natural nuclear reactions aren't possible today.
I actually agree with the OP. Having loads of stuff on your CV makes you look like you have only a superficial understanding of the subjects. if a CV comes accross your desk and someone with 3 years dev experience knows Java, C++, VB, perl, javascript, C#, Oracle . . . . then you have to question how indepth this individual knows these platforms.
That's different from saying you've got experience in Analysis. Design, Team leader stuff. etc.
Last year we did some research and looked into the various different helpdesk solutions that are available. Most of them were really expensive but we found Cerberus for $100. Although it is a ticketing system, it's also got a built in knowledgebase which is searchable on subject, keyword, content, etc. It may not be right for what you need (you don't say why you are implementing a knowledgebase) but it's very handy to have the answers to technical queries available in the same system that the helpdesk uses to record problem.
I've just installed a project from sourceforge that solved a problem I had. But I find it doesn't do stuff I want it to do. I can't run particular useful queries against the data in the DB (via the standard GUI). I can't use my own custom stylesheets, etc. I'm not knocking the project because it's a clever bit of kit. But I have ideas of stuff I'd like to add to it. So I'm going to do some work to include my ideas and offer them back to the project. Even if they aren't interested I'm still coding something useful instead of just playing with something to learn a language.
If you want to get back into coding then I'd suggest that the best thing to do is to find something which interests you and get involved.
Regardless of whether you choose packages or source, consistency accross servers is what is most important. You need to be able to go to any server and know that it has all the applications you need. This may be slightly altered in a distributed environment where certain servers are allocated for specific tasks, but you should still always know that all the database servers have the same MySQL install, or all the Web Servers have the same Apache configuration. This extends beyond configuration to software installs. All servers designated for a particular task need the same software, and the same versions of software on.
Whether you choose packages or source is up to you. The benefits of packages is that it's easier to install and easier to distribute accross many servers. However you may not be able to find the specific version of the package you require. You may find that the author of a piece of software doesn't release his code as an RPM or a DEB, etc. IMHO you are probably better off creating your own software from source, but having tarballs which you can copy accross servers to do a make install. this gives you ultimate control over where configuration files live, which versions of software you run, which options the software is compiled in with, and so on.
That was valid in the old BSD days, but newer paging algorythms no longer need this.
Re:You're dealing with the problem too high up
on
Fault Tolerant Shell
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· Score: 2, Insightful
Well that was just an example. If on the other hand the system the images were pulled from was very busy then the same is true. The problem is that you can't architect for a moving target and the flexbility that rapidly changing environments require is something which ftsh would be quite useful for.
OTOH, if the tool makes scripts simpler then bugs are less likely to be introduced. Why do we all need to keep on reinventing our own libraries and methods for checking an NFS server hasn't timed out (to use the example on the ftsh site). why not use a tool that does that stuff for us so we can concentrate on writing more elegant and functional scripts that are easier to read and debug and quicker to write.
Re:You're dealing with the problem too high up
on
Fault Tolerant Shell
·
· Score: 5, Insightful
Doesn't that depend on the definition of clustered though? Clustered systems can be things like beowulf clusters. But often a collection of standalone web servers behind a http load balancers is commonly referred to as a web cluster or array.
IMHO as someone who works in a complex web server / database server environment, there are many interdependancies brought by different software, different platforms and different applications. Whilst 100% uptime on all servers is a nice to have, it's a complex goal to achieve and requires not just expertise in the operating systems & web / database server software but an indepth understanding of the applications.
A system such as this fault tolerant shell is actually quite a neat idea. It allows for flexibility in system performance and availability, without requiring complex (and therefore possibly error prone or difficult to maintain) management jobs. An example would be server which replicates images using rsync. If one of the targets is busy serving web pages or running another application, ftsh would allow for that kind of unforeseen error to be catered for relatively easily.
Surely the point of books like this is not to show you how to write a shell script which lets you calculate interest payments, but to show you how to write a script with integers and maths calculations in. And to do that in an interesting way. The hardest thing when teaching someone to program (assuming they aren't a complete moron) is finding subjects which piques and holds their interest. I bet most people who read the review didn't think "wow, I can use a shell script to calculate my interest payments instead of MS excel" but instead thought "neat idea"
From what I've seen it's a very capable console with good 3d capability and some good games. The addition of bluetooth for wireless play and a web browser almost makes me want to purchase one.
But the fact that you will look like a tit using an ngage as a mobile phone just puts me off. and the fact that the ngage can't be purchased without a mobile phone contract stops me from just using it as a console.
So I agree, complete lack of market research has lead to the downfall of this product. Nothing to do with being associated with Nokia.
If I understand this correctly, Fyodor is stopping SCO from distributing Nmap as a binary release. Although he is no longer explicitly supporting it, there is nothing stopping an end user from downloading the Nmap source and trying to compile their own binary (although there's no guarantee it will work because Fyodor isn't coding for the SCO platform anymore).
As an ISP this doesn't bother me (much). I don't wait for my vendor (Redhat / Sun Microsystems) to release versions of Apache for my webservers. I compile my own build and deploy that across all my servers.
This is also no different from Closed Source software. Vendors pick and choose which platforms they wish to support. Oracle support RedHat and Suse Linux but not Debian (IIRC). Closed source vendors constantly pick and choose which platforms to support; sometimes market forces dictate this, sometimes technical issues dictate this. OSS should be no different
Well because if they're trying to make a supercomputer from a bunch of networked PC's then they're gonna all need to be running the same platform / software (e.g. Beowulf). Last time I checked you couldn't do this accross multiple different OS's
Well seeing as the " minimum requirements are 1.3 GHZ Pentium III/AMD equivalent or better with 256MB of RAM" I don't think the macs will be of much use.
Dell have been shipping their poweredge servers with gigabit ethernet as standard for nearly 18 months now
Re:I though otherwise, so did my physics teacher.
on
Comic Book Physics
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· Score: 1
"For instance, when he's coming in for a landing, he just kills his momentum. What's he interacting with? Objects can't make forces on themselves! Whatever mysterious method he has for creating and destroying momentum at will, presumably it also accounts for his ability to stop a jumbo jet without recoiling, etc"
Why can't he just kill his momentum? He doesn't have wings so he isn't flying the same way an aeroplane or a bird does. Perhaps his flying power is the ability to control his own momentum. Perhaps it's an ability to manipulate force. Perhaps it's an ability to control gravity.
Whilst it's interesting to see where some parrallels can be drawn between comic book physics and real world physics, it's still a fantasy based on laws different to our own. A dose of radiation would kill most people. In comics it allows someone's in built self loathing and hate to turn them into a green monster. Or alter their genetic structure to let them climb walls. It's a fantasy. Over analyse it and it doesn't work.
Superboy is teenage Superman. Most of his adventures are set in the future with the Legion of Superheroes. Well, pre-crisis Superboy is anyway. The current superboy is a clone from the Death of Superman storyline.
How have these guys measured this? downlading stuff off bit torrent you rarely get more than 20 seeds. How many files have you grabbed from kazaa that have more than 10 other clients they are downloading from? Seeing as there are loads of p2p networks, how have Macsoft come to the conculustion that "hundreds of thousands" of illegal downloads have occurred.
lots of comments here mention how the Mac version is buggy, slow and people resent buying the game after bungie sold out to Microsoft. Perhaps (in true RIAA style), Macsoft are blaming poor sales on p2p networks as opposed to poor product.
then i guess you are more eloquent than I am because "The internet is full of incompetent Windows admins, millions upon millions
of them. Windows administration basics are easy, but competence is hard." was the point I was trying to make
Slashdot Mirror
Slashdot is fucked up when someone posts an insightful and informative post like this and it gains no mod points for either.
If I understand you correctly you you are looking for a F/OSS project to do what you are after.
However if you do actaully have a budget to spend have a look at the 3DNS product from F5 Networks. it does the failover you describe and although it works better if it is intereacting with F5's server load balancing product, it can still monitor and react to standard web servers becoming unavailable.
dude you sound like Ned Flanders
not that I knows anything about these things, but I'd imagine the engine from the Subaru is significantly lighter than the original camaro engine. Probably kinda important when your building a boat
If you read the article it says that the Uranium was caused by natural nuclear reactors and that due to the half life of the substance such natural nuclear reactions aren't possible today.
I actually agree with the OP. Having loads of stuff on your CV makes you look like you have only a superficial understanding of the subjects. if a CV comes accross your desk and someone with 3 years dev experience knows Java, C++, VB, perl, javascript, C#, Oracle . . . . then you have to question how indepth this individual knows these platforms.
That's different from saying you've got experience in Analysis. Design, Team leader stuff. etc.
Last year we did some research and looked into the various different helpdesk solutions that are available. Most of them were really expensive but we found Cerberus for $100. Although it is a ticketing system, it's also got a built in knowledgebase which is searchable on subject, keyword, content, etc. It may not be right for what you need (you don't say why you are implementing a knowledgebase) but it's very handy to have the answers to technical queries available in the same system that the helpdesk uses to record problem.
you leave the house to go for a shit?
I've just installed a project from sourceforge that solved a problem I had. But I find it doesn't do stuff I want it to do. I can't run particular useful queries against the data in the DB (via the standard GUI). I can't use my own custom stylesheets, etc. I'm not knocking the project because it's a clever bit of kit. But I have ideas of stuff I'd like to add to it. So I'm going to do some work to include my ideas and offer them back to the project. Even if they aren't interested I'm still coding something useful instead of just playing with something to learn a language.
If you want to get back into coding then I'd suggest that the best thing to do is to find something which interests you and get involved.
Regardless of whether you choose packages or source, consistency accross servers is what is most important. You need to be able to go to any server and know that it has all the applications you need. This may be slightly altered in a distributed environment where certain servers are allocated for specific tasks, but you should still always know that all the database servers have the same MySQL install, or all the Web Servers have the same Apache configuration. This extends beyond configuration to software installs. All servers designated for a particular task need the same software, and the same versions of software on.
Whether you choose packages or source is up to you. The benefits of packages is that it's easier to install and easier to distribute accross many servers. However you may not be able to find the specific version of the package you require. You may find that the author of a piece of software doesn't release his code as an RPM or a DEB, etc. IMHO you are probably better off creating your own software from source, but having tarballs which you can copy accross servers to do a make install. this gives you ultimate control over where configuration files live, which versions of software you run, which options the software is compiled in with, and so on.
That was valid in the old BSD days, but newer paging algorythms no longer need this.
Well that was just an example. If on the other hand the system the images were pulled from was very busy then the same is true. The problem is that you can't architect for a moving target and the flexbility that rapidly changing environments require is something which ftsh would be quite useful for.
OTOH, if the tool makes scripts simpler then bugs are less likely to be introduced. Why do we all need to keep on reinventing our own libraries and methods for checking an NFS server hasn't timed out (to use the example on the ftsh site). why not use a tool that does that stuff for us so we can concentrate on writing more elegant and functional scripts that are easier to read and debug and quicker to write.
Doesn't that depend on the definition of clustered though? Clustered systems can be things like beowulf clusters. But often a collection of standalone web servers behind a http load balancers is commonly referred to as a web cluster or array.
IMHO as someone who works in a complex web server / database server environment, there are many interdependancies brought by different software, different platforms and different applications. Whilst 100% uptime on all servers is a nice to have, it's a complex goal to achieve and requires not just expertise in the operating systems & web / database server software but an indepth understanding of the applications.
A system such as this fault tolerant shell is actually quite a neat idea. It allows for flexibility in system performance and availability, without requiring complex (and therefore possibly error prone or difficult to maintain) management jobs. An example would be server which replicates images using rsync. If one of the targets is busy serving web pages or running another application, ftsh would allow for that kind of unforeseen error to be catered for relatively easily.
Surely the point of books like this is not to show you how to write a shell script which lets you calculate interest payments, but to show you how to write a script with integers and maths calculations in. And to do that in an interesting way. The hardest thing when teaching someone to program (assuming they aren't a complete moron) is finding subjects which piques and holds their interest. I bet most people who read the review didn't think "wow, I can use a shell script to calculate my interest payments instead of MS excel" but instead thought "neat idea"
IIRC it's done through the OpenGL API for Java because many of the Ngage games work on other Java enabled Nokia phones.
What I meant was the games looked impressive for a handheld, but I wasn't clear in my post.
From what I've seen it's a very capable console with good 3d capability and some good games. The addition of bluetooth for wireless play and a web browser almost makes me want to purchase one.
But the fact that you will look like a tit using an ngage as a mobile phone just puts me off. and the fact that the ngage can't be purchased without a mobile phone contract stops me from just using it as a console.
So I agree, complete lack of market research has lead to the downfall of this product. Nothing to do with being associated with Nokia.
If I understand this correctly, Fyodor is stopping SCO from distributing Nmap as a binary release. Although he is no longer explicitly supporting it, there is nothing stopping an end user from downloading the Nmap source and trying to compile their own binary (although there's no guarantee it will work because Fyodor isn't coding for the SCO platform anymore).
As an ISP this doesn't bother me (much). I don't wait for my vendor (Redhat / Sun Microsystems) to release versions of Apache for my webservers. I compile my own build and deploy that across all my servers.
This is also no different from Closed Source software. Vendors pick and choose which platforms they wish to support. Oracle support RedHat and Suse Linux but not Debian (IIRC). Closed source vendors constantly pick and choose which platforms to support; sometimes market forces dictate this, sometimes technical issues dictate this. OSS should be no different
Well because if they're trying to make a supercomputer from a bunch of networked PC's then they're gonna all need to be running the same platform / software (e.g. Beowulf). Last time I checked you couldn't do this accross multiple different OS's
Well seeing as the " minimum requirements are 1.3 GHZ Pentium III/AMD equivalent or better with 256MB of RAM" I don't think the macs will be of much use.
Dell have been shipping their poweredge servers with gigabit ethernet as standard for nearly 18 months now
"For instance, when he's coming in for a landing, he just kills his momentum. What's he interacting with? Objects can't make forces on themselves! Whatever mysterious method he has for creating and destroying momentum at will, presumably it also accounts for his ability to stop a jumbo jet without recoiling, etc"
Why can't he just kill his momentum? He doesn't have wings so he isn't flying the same way an aeroplane or a bird does. Perhaps his flying power is the ability to control his own momentum. Perhaps it's an ability to manipulate force. Perhaps it's an ability to control gravity.
Whilst it's interesting to see where some parrallels can be drawn between comic book physics and real world physics, it's still a fantasy based on laws different to our own. A dose of radiation would kill most people. In comics it allows someone's in built self loathing and hate to turn them into a green monster. Or alter their genetic structure to let them climb walls. It's a fantasy. Over analyse it and it doesn't work.
Superboy is teenage Superman. Most of his adventures are set in the future with the Legion of Superheroes. Well, pre-crisis Superboy is anyway. The current superboy is a clone from the Death of Superman storyline.
How have these guys measured this? downlading stuff off bit torrent you rarely get more than 20 seeds. How many files have you grabbed from kazaa that have more than 10 other clients they are downloading from? Seeing as there are loads of p2p networks, how have Macsoft come to the conculustion that "hundreds of thousands" of illegal downloads have occurred.
lots of comments here mention how the Mac version is buggy, slow and people resent buying the game after bungie sold out to Microsoft. Perhaps (in true RIAA style), Macsoft are blaming poor sales on p2p networks as opposed to poor product.
then i guess you are more eloquent than I am because "The internet is full of incompetent Windows admins, millions upon millions of them. Windows administration basics are easy, but competence is hard." was the point I was trying to make