An Overview of Aquilon
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Adams, James
Aquilon is the third generation configuration data-store for Quattor (The first being CDB and the second being SCDB). This talk will cover the architecture and motivation behind Aquilon, experience from a site migrating to it and some examples of the power it can give to SysAdmins. Aquilon features a broker daemon with overall ownership of the system including profile compilation and host notification. The broker models an organisation's infrastructure as objects in a RDBMS, generating configuration code from this as needed. User interaction takes place over a kerberos secured connection to the broker, which delegates sandboxes (cloned git branches) to users when changes to configuration code is needed.
 So, I'm going to start with the previous talk, so if you're in the room for it, I'm not going to have you in the room for that. So, I'm just going to take a little bit about me so you can give some framing information and background. Now I'm going to walk around with you a little bit about me so you can give some framing information and background. So, I work at the Science and Technology Dept. of Sciences in the UK, I'm a science and computer department and I'm a computer science and computer department. So, I started with hardware cameras, I started with hardware ware, and now I'm going to design the products for the insulation, for the service. So, this is told to you about quite often and what we've had so far. So, the originator from the good world, the originator will go to the third world in that sense. So, I'm going to start with the insulation project. Can I just do a quick shout out? Sure, I'll do my best. I'll just talk louder and louder and louder until you tell me not to. So, most of the initial development work for Practicals done at CERN, they came up with an original configuration management system called CVB. As far as I can work out, C stands for CVS because that's what the configuration is for restoring. So, it was integrated with some of the production systems of CERN doing in the free and deployment. I tried to get used by the human community quickly about it and the president said it's called SCDB, but it has a very good... You can see the back of the room here. And the... and there are no more uses in package with the tool, it's just some anti-access to the extra product to produce and some infrastructure that Louise made earlier. Both of these had scaling issues. So, CERN had recently moved away and switched to Cubic. Some of their work throws involved, I believe, something like a two hour wait for a deployed for a changed CERN. I think Louise experienced this first time at some point. Quite honestly, you're going to be doing that for 45 minutes. Yeah, something really terrible. SCDB is what we're running in production at 3-tier 1 in London, Hamilton, New voluntary. We've got about 2500 hosts in it now and we're going to be working on it for about 25 minutes, which is starting to get on the scaling issue for us. Both of those systems have some sort of lines for cold, compile, commit, probably, or in some cases you code compile or doesn't compile. Code compile doesn't compile. Go around that set up until someone goes to fix the performance for you. As I said, neither of them is much more than the environment the writing can carry in, and pushing it out to process. There's some layout guidelines in the community, particularly the QWG 10 grade framework, which was an effort to try and share this configuration. There is an ongoing effort to share this configuration between grid sites and grid. It's a really great way of getting after starting the money, but the lack of any rules or enforced rules for structure and configuration needs to do everyone in the site during the things in a different way. Every site does it differently and admin is within a site to do it differently, because of course there's more than one way to do it right. But what you don't want is one code base with seven different right ways of doing something. What you want is everyone following the same coding guidelines. Now, coders understand working with coding guidelines. This means at large, the likes of the names do not. If I say in the works, you don't want them. So this gets really, really messy. If you start deploying lots of thousands of codes, you're not going to want to provide the code for each other, even if it is, this is a code because it has designed the address, and that's all. It gets really boring. So what's happening next is every single site designed its own, it moves the game to us, as upstream to write a code for that, and again, we ended up with a fragmented community. Now, these are not huge problems. This is still a very powerful system, and everyone is still, and still is, most people using this. And it's good enough. It's great. It does the job, it's post-it. But, in 2007, the bank, Morgan Stanley, who is in left and right, turned up at one of the community meetings and announced they wanted to deploy 20,000 codes. Everyone ruled in horror at least, because we knew our systems were in scare. And then they added loads of more requirements on top of this. Someone not there. Including giving it to people who aren't even sysappen instead of our main sports car. As in, if they sit on the telephone and the help desk somewhere, someone tells them there's a problem and they need to take a complex configuration on top of it. Everything PANCO is not going to do this. You need experts involved to do that. Obviously, all of us, if we want to branch with integration, using subversion or CVS, we never want to. On the branch, it might not be able to merge it back ever again. And if you're going to start spreading it around hundreds of people, you're going to need to provide and enforce a structural integration. So we need to require something entirely new, which we're out working. So, CVPB is the first generation, and SCVP is the second generation. This means ACTA on the third generation of configuration motion, database for Crattles. So it is part of Crattles, which is not set within two Crattles, which is a subcomponent. It doesn't incorporate many ideas from both CVP and SCVP. It re-implements some of the things that SCVP dropped from CVP. It also incorporates things from all the standards previous configuration management system, which is designed in the 90s, which is not designed for Linux control, but for a few hundred units of OXS. And luckily, the community almost ended the emotion of the federal work, which has been great. They've released everything under the Apache 2 license, and it's now part of the project as well. The first impressions we've got were, it. Wonderful. It is everything we always wanted. Proper branching, proper merging, we can do development without breaking out production systems, which is great. Also, we can give it to new people, and they can do development with learning without breaking out production systems. The next thing we decided to discover was that there's no longer some code compiler and a web server that makes push-out systems. There's now this thing called program, whatever that is. It owns part of the configuration and writes code for you, which is terrifying the first time you see it. And there's a command line. We've documented commands and man pages. This was shocking. The architecture is the little box that you saw, and it used to go around if you would think it was cool. Which is actually quite simple, especially when you can see it without the electrical mesh around it. The code, two code for basically the code for the user placing. So, you can write the AQ client, my local, the left. That is your entire interaction with the system. The code you created to get, you ask the both of you to do things using client. So, what this ends up is called AQDB, which is a relational database of your choice. There's only two of these four. It triggers the app to compile, it triggers the pan, it doesn't reveal stuff and go back to the web server as before. But now you actually have an interface for doing that. So, this makes things really powerful. The broker really is a source of all power. It provides the work code if you want to see. It writes you can code if your objects and relationships are going through on their vectors in the net. It owns the difficulties you ask the students on your behalf. So, for example, if you want to do some work on branch, you ask the broker to create your branch. That will then get thrown out, you can even call it a sandbox where you can work on it. You can then attach your hosts or some of your hosts just to test it to your sandbox. So, you can now work in a complete, guise-native environment with new production systems. You can throw that away at the end if you want to. The broker itself is a new item, it's a new Nester-O-Alkney, which is the most forceful OIM I've ever come across. And, as I said, you have a source of your database system, but where is your process and object? Because that's the only one your relationships with. It has a kind of registered API, which is used if you want to do it, things. And, most of the time, you will regularly use it for an hour and nine hours. So, I talked about sandboxing, but they're really, really easy to create with your lightweight. They just could get rushed, but you ask the broker to do it for you. So, you use the AP command. So, for example, I create a sandbox called new awesomeness, because I always implement here, for instance. And it gets by code by the time it's set up for you. You can just see the interface start working. When you're finished, or when you want to, unless someone else is looking for a password, you can get an upstream code for you, because you're a kid. We want code for you. We are CSA drones. We have one to three people, which tells us what the code is wrong. Yes, absolutely. Then, when everyone's happy with it, we'll merge it back into production. Now, you'll notice on the source here, it has my name before the production merge. This is because, really, someone else should be merging your sandbox back into production, not you. Once someone's happy with it, immediately it will merge it into production. So, in this case, I'm merging my own back into production, because I forgot everything I wrote. I mentioned I was just saying. So, Gractor was always thinking about modeling your infrastructure in a configuration in code. Luis alluded to the fact that sometimes this gets messy and unstructured. So, after all, it actually provides parts to the infrastructure that has objects. These are then stored in the machine database. You can change the relationships between them. But things like building, tools, racks, desks, machines, and tools, they're great. These can all be defined using a client level, and they can be together using a client. Gractor then writes the actual category for you. You never see it, as he might have seen, it's just head to the compiler, and everything happens as if by magic. It also implements the few structures for actual configuration. The features, which are just blocks of content, in fact, as these grotuses are added to something you wrote and that it has to be self-contained between the three other things, and it is going to the fact that you can do the work in a grotuse. The personalities is what a machine has. So, one machine has a lot of personality. And it's just a collection of features. So, you have a server which requires DNS, HPD, HB, perhaps, three different features, make one personality for a web server, which is what we say is a web server. But that's personal to our site. And the host is just a machine, plus its hostname, plus its IP address, a personality, and what operating system it runs. So, the whole thing is still designed to be OS version agnostic. So, we've run a scaring number of different versions, the point of the existence of scientific limits in production with the same configuration trick, because most things need to be abstracted the way things are done aren't. The command line provides an update command for these objects, and they're a huge help page, and I'm going to show you where an investment doger now is. The next part of the model is services, which is just the concept of a service, the fact that you have servers and clients, but you want to keep track of them, you want to lump them into a feature. And the real power comes from these things, the service maps. So, you might have, for example, multiple services at the same time, that different types of characters are connected. So, you can define rules based on which ones match, which are, you can do that with a company, you can do that with a company, and you can do that with a company, for example, in a second. But at the moment, you can create a rule based on the organization it is, what this publication has, and what networks it is. And we take network IP address, what we need is the network loop IP, so whatever it is, that's going to be one or something, for example. So, you can allocate a service to a server. So, for example, you have two clusters, you have two different types of compute node, but each has an NFS server, and you have a server software cluster, which has exactly the same number of stages and NFS servers. But each is in the set of subnet. What you could do is define an NFS service with an instance of each cluster, which is done simple, have a server, meet instance, again, this assumes the server is already set up in the configuration system. And the requirement for NFS to both of those compute node personalities, that is to tell Apple that if you have a GPU cluster node, or a ZNL-cry cluster node, they both require NFS. I think you can't build a new NFS, this is not valid configuration. And then we say, to get those simple servers, on those instances, these servers will be the two which, so if it's in one network, it's one, if it's in the other network, it's the other. I think that makes sense for us to do that. So, after one, we're going to put a site showing up by the right-hand side of this node. Partly this is because their unit, their team is based in London, we're based in Oxfordshire, and it's just down the railway. If that's even the answer, this is not my problem. So, we could get their developers into our pretty quickly sort things out. They took about six months of moving their own business from their code to actually get into the front of the first place. We're now running the 200-hospice-required reproduction, which is basically a product that I have in my mind. It's a multi-node site-work service, just to try and get that. We're still running the S&P in production. The more and more people play with that, the less and less they actually want to use S&P anymore. It really feels like a good way to compare. So, wait in ten minutes, it's late. I'll just do this one, check the work. It's not the project. So, we're getting very close to the collaboration, hopefully this year, but we've got close to 3,000 patients now. I think it's going to get better, I don't think that's going to happen. One of the things we've signed was we had an S&P board. We're not going to be able to pay that S&P, so we're going to keep these up and, as we've known, I think we're going to get so good and safe with the reasons that are being used. So, just to conclude, Act 1 is the third generation C&P fragile. And at this point, as far as the community is concerned, there aren't any more C&P and S&P involved. It's the people using them, we are going to support them. We want one who use this. It integrates a limited information, and it can use its limited database, to bring it onto the moment, and it can make it into the system. We intend to report to the projects that we're going to S&P. The road to framework forces it, and the road to its reasons is also more general. There's also a similar story of projects now. One thing I do mention, because you've got road to the front line, and the rest of the shape, which could be a roadway to the front line, roadways on purpose. You can start the ride with the road, you can start the ride with something like a platform as a service. Because if you can say, this host is now on service, this host is now on bus and then, and you can make that change in 30 seconds, and the 30 seconds later, you can make that change in 30 seconds. You start doing this, and you make it. The platform is just a cable, so you can make it. It isn't very easy. No, it's not a big deal. It's a big deal. Thank you. APPLAUSE Any questions? No, no. There's something stupid most in the first generation of video games. You have a good thing in the practice, right? Yeah, or the best of the best of the best. I know the answer to this is somebody moves something, trying to find something, right? Yes. Is there any mechanism that it can discover discrepancies that can prevent an agreement? So we have a good mechanism in discovering discrepancies based on network interactions. So, like, an SPR, and we tag our servers, or something like that, so we can go... I'll answer that. So we've got one. In turn, we have one with a BP, which checks the performance, which is the... But yes, the answer is killing. So the E-convert configuration management system, which is of the... If you're going to do that, you can do a configuration management architecture who owns the whole system, and his strong will to know how to get on with the things where the people he wants. This person should be the person being the most of the coding, who's been encouraging others to like good coding, but can't do things with the most cost-effective... And maybe you're going to do a bar at the moment. Security, yeah. I'm not sure how it works in a room, but it does make a lot of games. I don't think it made it down to something. Yep. So, for the ethanol system, just to clarify my understanding, the plan code is still there, but the sort of help that's been used in the development, and I've actually seen that there's configuring the supermodel... Yeah. I don't think it's exactly the same. Probably have server-like construct. Or normal, no, it's very destroyed. Exactly. So, actually, this is the command line. At least I didn't want to show you the command on this data. That means the command is doing very good. It's doing pretty good on this data. Each one of those has a piece of help. Thank you. So, I'm just going to see if I can find this... Oh, wait a minute. I'm just going to take you through. I'll show you. I'll show you. How does it go? No one cares about the public web server. It'll be fine. So, these are all the things that the public web server's made in Apple. So, the personality is this in an external web server, and it has a web server demo, and that's it. Because it's part of our site, it also gets all these various things, like DNS, MLP, into a second pool, and the message of the day before. So, every single post we have gets that. So, everything about it, but it's not actually a real machine, and it's in a fake building. So, it's currently in our server, and that's made here in the last session. So, this is the sort of thing that helped us, or even they usually did, have to do a lot to make some kind of work. That's more than a server, I think. I think it's very helpful. Just to go on, and put this out there in a minute. That's not good. So, the back door doesn't ask you for anything. I hope you make it so that you push that. I hope you have some work on this. So, that note is now coming in the last session. So, I should probably undo that for quite a while. That means the web server will probably get uninstalled for maybe a minute or a last session. We'll start something before the class is over. But yeah, so, I hope that they can do that. They can do that quickly. Really, they should be changing because of that. So, what if we built some supporting things, but not in terms of human reasons, like since like so, because the file is extended, it verifies what we got for the file extension up front. You have that information support. So, instead of moving class to break things, we're moving class to not break things. It's going to be better. Is there something that grows, so you can see what others do? Yes, yes. We don't have any roles set up because we all power users. We trust everyone. The roles are based on what commands we would like. So, you might not want anyone to be able to make a network change, for example, because you might have a network between them just that. You might not want people to be able to change personalities if they're in a certain sub-team or a team support. But you might want the build-back features and the new features for the system. So, it's up to you to find what roles are. At the moment, they're coded in Python, so you have to put Python or the name to change the roles, but I believe that they're going to put it somewhere to suit. The grammar next to it is scary and rough because it's a big team that does keep the name going for more than seven. The way it would be, I would request it to them. They would tell me, no, it's good. You know, there's a very good domain. We're doing this in a... I don't think we'll have long machines. We just treat the machines as any type of machine. And in terms of using it to sit with the generation of the end, no, it has been in the work. I know the form is standing out. We can count the number of counts of it. At the moment, we've got to know these workers purely on things like the end-wave. So, they're merging stupid and I want to be on the customers' end machines. So, one of the concepts it has built in is the idea of a cluster of work, the end-wave machines. There's another view that's alongside that. Yeah, right. Yeah, right. Yeah, right. Yeah, right. Yeah, right. Yeah, right. Yeah, right. Yeah, right. Yeah, right. Yeah, right. Yeah, right. Yeah, right.
 So, I'm going to start with the previous talk, so if you're in the room for it, I'm not going to have you in the room for that.  So, I'm just going to take a little bit about me so you can give some framing information and background. Now I'm going to walk around with you a little bit about me so you can give some framing information and background.  So, I work at the Science and Technology Dept. of Sciences in the UK, I'm a science and computer department and I'm a computer science and computer department.  So, I started with hardware cameras, I started with hardware ware, and now I'm going to design the products for the insulation, for the service.  So, this is told to you about quite often and what we've had so far. So, the originator from the good world, the originator will go to the third world in that sense.  So, I'm going to start with the insulation project. Can I just do a quick shout out? Sure, I'll do my best. I'll just talk louder and louder and louder until you tell me not to.  So, most of the initial development work for Practicals done at CERN, they came up with an original configuration management system called CVB.  As far as I can work out, C stands for CVS because that's what the configuration is for restoring.  So, it was integrated with some of the production systems of CERN doing in the free and deployment.  I tried to get used by the human community quickly about it and the president said it's called SCDB, but it has a very good...  You can see the back of the room here. And the... and there are no more uses in package with the tool, it's just some anti-access to the extra product to produce and some infrastructure that Louise made earlier.  Both of these had scaling issues. So, CERN had recently moved away and switched to Cubic.  Some of their work throws involved, I believe, something like a two hour wait for a deployed for a changed CERN. I think Louise experienced this first time at some point.  Quite honestly, you're going to be doing that for 45 minutes.  Yeah, something really terrible. SCDB is what we're running in production at 3-tier 1 in London, Hamilton, New voluntary.  We've got about 2500 hosts in it now and we're going to be working on it for about 25 minutes, which is starting to get on the scaling issue for us.  Both of those systems have some sort of lines for cold, compile, commit, probably, or in some cases you code compile or doesn't compile.  Code compile doesn't compile. Go around that set up until someone goes to fix the performance for you.  As I said, neither of them is much more than the environment the writing can carry in, and pushing it out to process.  There's some layout guidelines in the community, particularly the QWG 10 grade framework, which was an effort to try and share this configuration.  There is an ongoing effort to share this configuration between grid sites and grid.  It's a really great way of getting after starting the money, but the lack of any rules or enforced rules for structure and configuration needs to do everyone in the site during the things in a different way.  Every site does it differently and admin is within a site to do it differently, because of course there's more than one way to do it right.  But what you don't want is one code base with seven different right ways of doing something.  What you want is everyone following the same coding guidelines.  Now, coders understand working with coding guidelines.  This means at large, the likes of the names do not.  If I say in the works, you don't want them.  So this gets really, really messy.  If you start deploying lots of thousands of codes, you're not going to want to provide the code for each other,  even if it is, this is a code because it has designed the address, and that's all.  It gets really boring.  So what's happening next is every single site designed its own, it moves the game to us,  as upstream to write a code for that, and again, we ended up with a fragmented community.  Now, these are not huge problems.  This is still a very powerful system, and everyone is still, and still is, most people using this.  And it's good enough.  It's great. It does the job, it's post-it.  But, in 2007, the bank, Morgan Stanley, who is in left and right, turned up at one of the community meetings  and announced they wanted to deploy 20,000 codes.  Everyone ruled in horror at least, because we knew our systems were in scare.  And then they added loads of more requirements on top of this.  Someone not there.  Including giving it to people who aren't even sysappen instead of our main sports car.  As in, if they sit on the telephone and the help desk somewhere, someone tells them there's a problem  and they need to take a complex configuration on top of it.  Everything PANCO is not going to do this.  You need experts involved to do that.  Obviously, all of us, if we want to branch with integration, using subversion or CVS, we never want to.  On the branch, it might not be able to merge it back ever again.  And if you're going to start spreading it around hundreds of people, you're going to need to provide and enforce a structural integration.  So we need to require something entirely new, which we're out working.  So, CVPB is the first generation, and SCVP is the second generation.  This means ACTA on the third generation of configuration motion, database for Crattles.  So it is part of Crattles, which is not set within two Crattles, which is a subcomponent.  It doesn't incorporate many ideas from both CVP and SCVP.  It re-implements some of the things that SCVP dropped from CVP.  It also incorporates things from all the standards previous configuration management system,  which is designed in the 90s, which is not designed for Linux control, but for a few hundred units of OXS.  And luckily, the community almost ended the emotion of the federal work,  which has been great.  They've released everything under the Apache 2 license, and it's now part of the project as well.  The first impressions we've got were, it. Wonderful.  It is everything we always wanted.  Proper branching, proper merging, we can do development without breaking out production systems, which is great.  Also, we can give it to new people, and they can do development with learning without breaking out production systems.  The next thing we decided to discover was that there's no longer some code compiler and a web server that makes push-out systems.  There's now this thing called program, whatever that is.  It owns part of the configuration and writes code for you, which is terrifying the first time you see it.  And there's a command line. We've documented commands and man pages.  This was shocking.  The architecture is the little box that you saw, and it used to go around if you would think it was cool.  Which is actually quite simple, especially when you can see it without the electrical mesh around it.  The code, two code for basically the code for the user placing. So, you can write the AQ client, my local, the left.  That is your entire interaction with the system.  The code you created to get, you ask the both of you to do things using client.  So, what this ends up is called AQDB, which is a relational database of your choice.  There's only two of these four.  It triggers the app to compile, it triggers the pan, it doesn't reveal stuff and go back to the web server as before.  But now you actually have an interface for doing that.  So, this makes things really powerful.  The broker really is a source of all power.  It provides the work code if you want to see.  It writes you can code if your objects and relationships are going through on their vectors in the net.  It owns the difficulties you ask the students on your behalf.  So, for example, if you want to do some work on branch, you ask the broker to create your branch.  That will then get thrown out, you can even call it a sandbox where you can work on it.  You can then attach your hosts or some of your hosts just to test it to your sandbox.  So, you can now work in a complete, guise-native environment with new production systems.  You can throw that away at the end if you want to.  The broker itself is a new item, it's a new Nester-O-Alkney, which is the most forceful OIM I've ever come across.  And, as I said, you have a source of your database system, but where is your process and object?  Because that's the only one your relationships with.  It has a kind of registered API, which is used if you want to do it, things.  And, most of the time, you will regularly use it for an hour and nine hours.  So, I talked about sandboxing, but they're really, really easy to create with your lightweight.  They just could get rushed, but you ask the broker to do it for you.  So, you use the AP command.  So, for example, I create a sandbox called new awesomeness, because I always implement here, for instance.  And it gets by code by the time it's set up for you.  You can just see the interface start working.  When you're finished, or when you want to, unless someone else is looking for a password,  you can get an upstream code for you, because you're a kid.  We want code for you. We are CSA drones. We have one to three people,  which tells us what the code is wrong.  Yes, absolutely.  Then, when everyone's happy with it, we'll merge it back into production.  Now, you'll notice on the source here, it has my name before the production merge.  This is because, really, someone else should be merging your sandbox back into production, not you.  Once someone's happy with it, immediately it will merge it into production.  So, in this case, I'm merging my own back into production, because I forgot everything I wrote.  I mentioned I was just saying.  So, Gractor was always thinking about modeling your infrastructure in a configuration in code.  Luis alluded to the fact that sometimes this gets messy and unstructured.  So, after all, it actually provides parts to the infrastructure that has objects.  These are then stored in the machine database.  You can change the relationships between them.  But things like building, tools, racks, desks, machines, and tools, they're great.  These can all be defined using a client level, and they can be together using a client.  Gractor then writes the actual category for you.  You never see it, as he might have seen, it's just head to the compiler, and everything happens as if by magic.  It also implements the few structures for actual configuration.  The features, which are just blocks of content, in fact, as these grotuses are added to something you wrote  and that it has to be self-contained between the three other things, and it is going to the fact that you can do the work in a grotuse.  The personalities is what a machine has.  So, one machine has a lot of personality.  And it's just a collection of features.  So, you have a server which requires DNS, HPD, HB, perhaps, three different features,  make one personality for a web server, which is what we say is a web server.  But that's personal to our site.  And the host is just a machine, plus its hostname, plus its IP address, a personality, and what operating system it runs.  So, the whole thing is still designed to be OS version agnostic.  So, we've run a scaring number of different versions,  the point of the existence of scientific limits in production with the same configuration trick,  because most things need to be abstracted the way things are done aren't.  The command line provides an update command for these objects,  and they're a huge help page, and I'm going to show you where an investment doger now is.  The next part of the model is services, which is just the concept of a service,  the fact that you have servers and clients,  but you want to keep track of them, you want to lump them into a feature.  And the real power comes from these things, the service maps.  So, you might have, for example, multiple services at the same time,  that different types of characters are connected.  So, you can define rules based on which ones match,  which are, you can do that with a company, you can do that with a company,  and you can do that with a company, for example, in a second.  But at the moment, you can create a rule based on the organization it is,  what this publication has, and what networks it is.  And we take network IP address, what we need is the network loop IP,  so whatever it is, that's going to be one or something, for example.  So, you can allocate a service to a server.  So, for example, you have two clusters, you have two different types of compute node,  but each has an NFS server, and you have a server software cluster,  which has exactly the same number of stages and NFS servers.  But each is in the set of subnet.  What you could do is define an NFS service with an instance of each cluster,  which is done simple, have a server, meet instance,  again, this assumes the server is already set up in the configuration system.  And the requirement for NFS to both of those compute node personalities,  that is to tell Apple that if you have a GPU cluster node, or a ZNL-cry cluster node,  they both require NFS.  I think you can't build a new NFS, this is not valid configuration.  And then we say, to get those simple servers,  on those instances, these servers will be the two which,  so if it's in one network, it's one, if it's in the other network, it's the other.  I think that makes sense for us to do that.  So, after one, we're going to put a site showing up by the right-hand side of this node.  Partly this is because their unit, their team is based in London,  we're based in Oxfordshire, and it's just down the railway.  If that's even the answer, this is not my problem.  So, we could get their developers into our pretty quickly sort things out.  They took about six months of moving their own business from their code  to actually get into the front of the first place.  We're now running the 200-hospice-required reproduction,  which is basically a product that I have in my mind.  It's a multi-node site-work service, just to try and get that.  We're still running the S&P in production.  The more and more people play with that, the less and less they actually want to use S&P anymore.  It really feels like a good way to compare.  So, wait in ten minutes, it's late.  I'll just do this one, check the work.  It's not the project.  So, we're getting very close to the collaboration, hopefully this year,  but we've got close to 3,000 patients now.  I think it's going to get better, I don't think that's going to happen.  One of the things we've signed was we had an S&P board.  We're not going to be able to pay that S&P,  so we're going to keep these up and, as we've known,  I think we're going to get so good and safe with the reasons that are being used.  So, just to conclude,  Act 1 is the third generation C&P fragile.  And at this point, as far as the community is concerned,  there aren't any more C&P and S&P involved.  It's the people using them, we are going to support them.  We want one who use this.  It integrates a limited information,  and it can use its limited database,  to bring it onto the moment, and it can make it into the system.  We intend to report to the projects that we're going to S&P.  The road to framework forces it,  and the road to its reasons is also more general.  There's also a similar story of projects now.  One thing I do mention, because you've got road to the front line,  and the rest of the shape,  which could be a roadway to the front line,  roadways on purpose.  You can start the ride with the road,  you can start the ride with something like a platform as a service.  Because if you can say, this host is now on service,  this host is now on bus and then,  and you can make that change in 30 seconds,  and the 30 seconds later, you can make that change in 30 seconds.  You start doing this, and you make it.  The platform is just a cable, so you can make it.  It isn't very easy.  No, it's not a big deal.  It's a big deal.  Thank you.  APPLAUSE  Any questions?  No, no.  There's something stupid most in the first generation of video games.  You have a good thing in the practice, right?  Yeah, or the best of the best of the best.  I know the answer to this is somebody moves something,  trying to find something, right?  Yes.  Is there any mechanism that it can discover discrepancies  that can prevent an agreement?  So we have a good mechanism in discovering discrepancies  based on network interactions.  So, like, an SPR, and we tag our servers,  or something like that, so we can go...  I'll answer that.  So we've got one.  In turn, we have one with a BP, which checks the performance,  which is the...  But yes, the answer is killing.  So the E-convert configuration management system,  which is of the...  If you're going to do that,  you can do a configuration management architecture  who owns the whole system,  and his strong will to know how to get on with the things  where the people he wants.  This person should be the person being  the most of the coding,  who's been encouraging others to like good coding,  but can't do things with the most cost-effective...  And maybe you're going to do a bar at the moment.  Security, yeah.  I'm not sure how it works in a room,  but it does make a lot of games.  I don't think it made it down to something.  Yep.  So, for the ethanol system,  just to clarify my understanding,  the plan code is still there,  but the sort of help that's been used in the development,  and I've actually seen that there's  configuring the supermodel...  Yeah.  I don't think it's exactly the same.  Probably have server-like construct.  Or normal, no, it's very destroyed.  Exactly.  So, actually, this is the command line.  At least I didn't want to show you the command on this data.  That means the command is doing very good.  It's doing pretty good on this data.  Each one of those has a piece of help.  Thank you.  So, I'm just going to see if I can find this...  Oh, wait a minute.  I'm just going to take you through.  I'll show you.  I'll show you.  How does it go?  No one cares about the public web server.  It'll be fine.  So, these are all the things that the public web server's made in Apple.  So, the personality is this in an external web server,  and it has a web server demo, and that's it.  Because it's part of our site,  it also gets all these various things,  like DNS, MLP, into a second pool,  and the message of the day before.  So, every single post we have gets that.  So, everything about it,  but it's not actually a real machine,  and it's in a fake building.  So, it's currently in our server,  and that's made here in the last session.  So, this is the sort of thing that  helped us, or even they usually did,  have to do a lot to make some kind of work.  That's more than a server, I think.  I think it's very helpful.  Just to go on,  and put this out there in a minute.  That's not good.  So, the back door doesn't ask you for anything.  I hope you make it so that you push that.  I hope you have some work on this.  So, that note is now coming in the last session.  So, I should probably undo that for quite a while.  That means the web server will probably get uninstalled  for maybe a minute or a last session.  We'll start something before the class is over.  But yeah, so, I hope that they can do that.  They can do that quickly.  Really, they should be changing because of that.  So, what if we built some supporting things,  but not in terms of human reasons,  like since like so,  because the file is extended,  it verifies what we got for the file extension up front.  You have that information support.  So, instead of moving class to break things,  we're moving class to not break things.  It's going to be better.  Is there something that grows,  so you can see what others do?  Yes, yes.  We don't have any roles set up  because we all power users.  We trust everyone.  The roles are based on what commands we would like.  So, you might not want anyone to be able to make  a network change, for example,  because you might have a network between them just that.  You might not want people to be able to change  personalities if they're in a certain sub-team  or a team support.  But you might want the build-back features  and the new features for the system.  So, it's up to you to find what roles are.  At the moment, they're coded in Python,  so you have to put Python or the name  to change the roles, but I believe that  they're going to put it somewhere to suit.  The grammar next to it is scary and rough  because it's a big team that does keep  the name going for more than seven.  The way it would be, I would request it to them.  They would tell me, no, it's good.  You know, there's a very good domain.  We're doing this in a...  I don't think we'll have long machines.  We just treat the machines as any type of machine.  And in terms of  using it to sit with the generation of the  end, no, it has been in the work.  I know the form is standing out.  We can count the number of counts of it.  At the moment, we've got to know  these workers purely on things like the end-wave.  So, they're merging stupid and  I want to be on the customers' end machines.  So, one of the concepts it has built in  is the idea of a  cluster of work, the end-wave machines.  There's another view  that's alongside that.  Yeah, right.  Yeah, right.  Yeah, right.  Yeah, right.  Yeah, right.  Yeah, right.  Yeah, right.  Yeah, right.  Yeah, right.  Yeah, right.  Yeah, right.  Yeah, right.
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