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I'm going

In the end I followed the advice (even if they sounded more 'as warnings) to Dani3l3 and I've installed WordPress on our server and on my site. Therefore I will write 'them' from now on (actually it even more 'sense:)))

The link to my site (and then to my new blog) becomes [ this ]

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Skype down?

Someone you will be 'probably wondered why it was not possible to access Skype over the last ... 36 hours. This morning to try to understand what happens with an IM client that most 'and quickly' spread around the world, I went to investigate. There is no 'take long to actually understand it. At home there was an ad that talked about access problems system, problems they are working on (according to the report) all over the world from about 14:00 GMT. The latest update of today dates back to 5.00 GMT. It seems that everything is caused by inefficiency of an algorithm of the client and not a cyber attack. This' comforting and reassuring, but how can those who take even use Skype to work? Unfortunately for them the problem does not arise since the software and 'free.

At present my client seems to be able to connect for a while (though hopelessly back online after a few minutes) but 'capacity' of the eBay / Skype to work to resolve the problem so 'quickly shows how the product is a new dimension of online services.

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client server models: we have not learned anything from the past?

Enterprise networks are growing together (thankfully) to companies that are beginning to enjoy the benefits of opportunity 'to connect, at a reasonable cost, geographically distributed locations. VPN over Internet, dedicated connections or VPN built on the backbone of the ISP ... the choices are many with many advantages and disadvantages in each. The only thing that still unites the various solutions and 'capacity' of the transmission channel. Take any wholesale ADSL line: huge capacity 'of the band to download, a window minimum (256Kbps) for uploading. This is' a technical characteristic that can 'be acceptable for a company that has to sail or (already' not) use the means of electronic messaging. We see instead a necessity 'purely administrative: what company does not have a management system? In this area there are solutions of different nature and design, yet all have one thing in common: the client / server model (like the vast majority of applications).

The thing that strikes me most of the model client / server "and now 'that few seem to have learned something from the past. Think for a moment of IBM 3270 terminals, also called "Display Device" is used to access the management system resides on mainframe (server) on dumb terminals using a program text: Telnet (client). A simple model in which the user enters the data or waiting for data on your terminal server from transmitting or receiving. The model and 'excellent, and' consists of three stages: the client in which 'present the user interface, the server effectively and that' the application that processes data from the client and transmits them to it , and the database. The characteristic phenomenal 'that dozens of people could make connections using very small as the capacity' of bandwidth used by the terminals was around Kbps (yes, one) if not during the printing process (how nice, then you send ASCII data to dot matrix printers: 80 characters per line, more ' CR and LF codes or FF). Today the model and

'"presumptuously" equal, but in reality' has a basic flaw. They removed a layer from the previous model. Today the client 'interface (GUI) while the server' brutally Database. Client / Server. Just right?

No.

The problem of network connections 'that are latent capabilities and' small. The ability 'are still large and expensive to justify the need for' a 10Mbps connection to be able to access a user management system and 'almost insane. Let us not forget that the speed 'connection between two locations connected in a VPN and' equal 'to speed' maximum connection more 'slow'. Just to understand, if two locations are connected to each other in using the VPN backbone ISP, talking about wholesale connections, even if on the route there is no traffic locations can not communicate with each other in more '256Kbps. Speaking of management, this means that if a user in a home in Turin try to access the management who is in Milan will be 'available only to those 256Kbps data transfer. Each time the user then performs a user interface, the "clients" a query, forwards it to the "server" and waits for the result ... a result that is' a recordset (a set of rows generated by the database) to be played back and processed. It often happens that the database "leave" results in its memory, so each "step process" between a record and the other needs a new request for data from the client to the database and a corresponding response. In addition, the connection timeout or the latencies bring with them problems of stability 'in the connection between the client and the server, introducing a whole series of problems and inconvenience to users so (which becomes unproductive) because the management of systems (that - done - no way to solve the problem).

The solution would be to insert a "middleware" between the two layers: the client sends a request to our "middleware" (which - in the case of systems management - and 'the management application itself), these queries database (That from a technical point of view and 'connected to the database with a high-performance network) and sends the results to the client already' developed. We should not go and invent new transmission protocols for doing these operations, there are already 'a lot and are optimized for this type of activity'. From a functional point of view, well ... things change considerably. Meanwhile, the user no longer has 'the problems of slow establishment of the connection and receive / transmit data bandwidth of 256Kbps and certainly do not represent a problem (even if the end lines are in 128-Kbps ISDN backup with the user can' safely continue to work undisturbed).

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Cyrus IMAP, and LDAP Potfix? no: Active Directory

works. The integration of an e-mail server Linux based Cyrus and Postfix on with Active Directory and 'a reality' in production and stable. I already have 'knocked out' a document downloaded from this url in which I described the whole procedure. Now I need to do the script that queries Active Directory to automatically create the mailbox and take up a project that I abandoned in 2004, a management interface for all based on Cyrus IMAP (for more information: here is the link ).

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What kind of period

It 's not go as I hoped ... or better ... as it should go ... the system 'still stuck ... I can not give me peace, I continue to review and revise the data that I pulled out this morning ... debug than most 'regular, see What does the system while processing the batch ... DLL, file system, memory ... no conclusion ... found another little problem on the disk cache system ... I have not yet resolved. At the system level these machines are perfect, also did not want any configuration errors.

say that our system is identical to that of another reality '... I have a premonition on the internationalization of the system ... Monday we will know '. Today I think I'll go 'forward analysis of the e-mail system ...

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You never

system in production, but still ... GN3 scripts do not want it to generate the XML and images to be exported. Yesterday Ivan crazy to test the import script from the production server web environment, everything is fine now and ... surprise, surprise, running the VB script that generates pictures and articles spits out a great "Microsoft Visual C + + Runtime Library Runtime Error!". Apparently according to a Microsoft KB (Product No. 916177 ) and 'a problem with the DLL version 6.6.8063 of the mfc42u.dll. I have only just received the hotfix via email, alarm and trip to the 5.00AM tomorrow morning shot in the office to install it. With a little luck I can get the hotfix on the server before they leave the job of capturing the web, which would solve many problems, otherwise I end up the PHP script going to query the MSSQL DB and extracts the images directly on the filesystem. Sperem to make it before the deadline of 7:30 am.

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New Challenge

the question: "save the e-mail system but let's make truly effective 'my answer': Linux RedHat (or Fedora, or CentOS), Cyrus and Postfix. What is so special? I forgot the fourth ingredient: Active Directory.

I am studying a system to achieve these objectives:

• reduction of licensing fees on e-mail systems
• keep all e-mail online (IMAP)
• reduce costs System Administration

At what point are they? I have an IMAP server that authenticates the KDC on the Active Directory (not 'single sign-on but it' s possible to consolidate the authentication mechanism on a system already 'present in many companies: Active Directory in fact) and uses the same for the aliasing and delivery of messages (basically makes LDAP queries). Avro 'a paper ready in a few days, I'm working at night: p

Stay tuned.

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Now that we have too much fun shiny

My previous post? Surely incomprehensible ... I was upset ... 4 hours of sleep, and I am an idiot 'And if they come upon' split the mirror of his camper on the bleak window of my car at 2 am, and then again a tremendous effort to be able to be polished in a hurry this morning in order to solve possible problems arising from agonist migration last night. At the end of the day and 'went well, much better than I expected, so certainly unparalleled compared to previous weeks, where we have seen all the colors. Among the other unexpected events are not missed, however we were able to remedy everything in time humanly acceptable. The fact is that at 8:00 this morning an SMS MT has comforted me: "no incoming call ... so it's all for the better." In fact it was so '. Shortly after 8 pm I have already occurred and Citrix users' could work.

The chronicle of two days of preparation to migrate to the editorial system? Meanwhile the absence of MS, which would have had the opportunity to make a major contribution, especially because 'living the implementation of some new policy that I put together in the management of profiles (which is painful' cost to scream even three days last week reconfigure the entire Citrix farm ... it was just luck that work on Windows 2003, because 'without fiddling with MS in Citrix was not so' simple). However, two days to see and review the server, verify configurations, compare them with the project data and predictions of use. Result? IBM, which saw only 3.5 GB of RAM (instead of '10Gb), storage system (SAN) is not configured according to the specifications that I had suggested (in addition to a waste of space while 'useless that I'm going to settle again tomorrow ... 3 disks from 500GB unused :-/)... and ale '! Backup all data prior to the unit 'logic 250Gb before converting to heat the unit' logic ... and 'still all right, I must say that the promises made by IBM DS4700 to this have all been answered to date: converted the RAID-5 RAID-10 in about 6 hours, we now have a united' logic composed of 8 FC 146GB disks for a total of just under 600GB of usable space (of which 500 are already 'allocated). I understand that a RAID-5 face losing less space for the overhead (in fact we had an area of little more 'than 600GB to 1TB), but ... performance? Moreover, a RAID-5 on 8 discs with the midplane of the SAN still 2Gbps ... I wanted a RAID-10, that machine has to work and will work 'so it must be so powerful. However, both the SAN and all things considered 'the problem was really more' least of all (the technicians who were installing the publishing system did not even realize that I was changing the geometry of the RAID in the buttocks :))))... unfortunate that the disks are dynamic ... this makes me really furious not a little. I explicitly said I wanted to make the cluster active standby on those machines, and what I do there?? "Well convert them ... is certain: reformat the drive 'logic, delete the logical drive, convert the disk, recreate it, restore it and it' done. And when I find them more '2 hours to make this work?!?! Patience ... so I already know 'how-are work-around this problem.

Server ... checks, checks, even checks ... "SQL crashes every 5 minutes, then again ... I miss the time to watch the event log: skew on the system clocks of 4 minutes. But because 'people do not ever check the system clocks?? (Now that I think I do not have NTP configured on Catalyst - put in a footnote - but now!). Has anyone ever read the documentation on Kerberos or Active Directory? If the clocks are misaligned authentication tokens are no longer valid 'and create problems ... but in this case was not enough: the part of synchrony between the two servers (obviously) going to ball. Rules on system clocks arranged ... the DC align with a stratum-2 clock and distributes updates to all other machines on the network. Problem solved.

Server ... still testing ... "I'm sorry, but the two did not x3950 10Gb of RAM?". The answer of course was convinced and quiet ... "How 'that he sees only 3.5 GB?". First question: check the version of Microsoft Windows Server 2003: all right, and 'an Enterprise ... so what! We search the web, since the past is looming terror that a new hardware or firmware. Microsoft says to ignore errors PNPMEM in the event log, but 'still miss 7GB call. The solution comes from the big blue house (also a well known problem - for those who had the same problem on x32 machines, and this' link to IBM KB). Editing the boot.ini file of the two server publishing, added switch / PAE, reboot the server: 10240Mb of RAM and installed. Problem solved.

editorial engineers need a user that mounts correctly units' drive of the new system, without of course going to affect the work of others. Created a new user that they can use, created a new logon script ... operational verification of the work done last week on Active Directory. E. User Logon ... okay, engineers can proceed to the great work and everything works perfectly: Problem: non-existent.

Anxiety MT was pretty obvious, given the past and are not at all surprised at the thing. Indeed ... Meanwhile, catch the second Cisco Catalyst 2960-G (24 copper Gigabit ports) and configure it ... I go down ... I go ... College ... Start ... I set ... I turn ... back down '... in short, a big job: 15 'and the second catalyst and' ready for work ... 25 'and it' also in his closet. 4 patch cord red (let's hope that MS is not color blind) cross the flight, labeled (a color-blind test;)) and wired in the American running along the datacenter. Network: Ready.

And so ... preparation for work, at 19:40, there are also recorded on the news blog of the editorial ( here is the address for movies ). Spegnamo all the metaframe. They still have some trouble on the management console, but it's probably 'because of our KVM switch. Off, removed the rails, and reassembled again slipped back into the rack, all attached, high-density '. Gia 'that we had with auctions we cleaned the fans with compressed air. In a stroke of tool (which I had brought for the occasion below) and click / clack of the tracks, in 25 minutes even the servers were in the new housing. Auction has meticulously connected all the servers, cables, power visibly labeled and secured to the guides, network cables gray for servers connected to the switch and route it again: the start of every single server, functional testing, installation of IBM Director to manage centralized server farm and are operating again. Citrix farm: up and running.

Let's move the LUN on the SAN dedicated to the archive of PDF (trifles, only years of history of newspapers, several hundred GB of data ... the usual stuff) from the server that has worked so far to the new server. Virtually painless, I tried to raise anxiety in MT saying that we have a "complication" but not 'fallen into the trap (maybe I should reverse the bottle of water on him to pretend anxiety). Storage: up and running.

Final preparations, 3 hours while the quiet company of colleagues' we are installing the editorial ends to migrate the environment. Meanwhile, I set all point to review the logon script terminal server, centralized logon script that were on the NETLOGON share of the local domain. At around midnight we made the exchange. Changes to the logon script, final checks to make sure it worked in the editorial the next day without too much trouble (we knew that it would have had some home troubles, but more 'what else' cause they are not the domain). Everything feels right, an hour to finish checking the logon script is impeccable. Editorial: OK!

Finally, we can disconnect the network, with auctions there are going to knock 'the second Catalyst, unplug all network cables and mounts it in the closet target. Incidentally I have touched on (but I say ?!?!?!) the power of the second fiber switch for storage. A moment of concern 'cause if you lose data from a transaction or there was an error in the configuration of the network FC were back to square one. Pero 'infrastructure, from this point of view, and' impeccable: it has all continued to function without batting an eye: the system has operated perfectly redundancy circuits, I made a phone call to MT to hear if all goes well, they 'felt that something had happened (even though he had not understood what at first glance). But 'everything' and 'good: system fault-tolerance on the storage system: tested. (I only regret they did not perform crash tests of redundant power supplies for IBM ...: ()
Connected
second network switches, network devices and yellow cables critical services, cable gray server. Currently we have a redundant network on layer 2, but 'we are already' ready. All network cards are configured in the server failover and catalyst have RSTP ready to work, so 'tomorrow we have two other catalyst and high reliability' is also the backbone of the server. Connect the 4 wires that go to the second catalyst in the closet next to ... green lights. Ping: 1 ms. Perfect, we're done. Backbone: Editorial: 1Gbps between servers with 4Gbps between a closet and more! Now it really begins to think.

Today, small problems that we expected, except for one who has risen problem on SQL Server 'found machine with 10Gb of RAM and only 2 of the paging file. Fortunately, and 'was able to resolve this problem without restarting the hot editorial (at noon on that day of closure could be "annoying" to the user). Interventino few here and there but nothing on the remote stations transcendental. So a peaceful migration, including all those I have seen and experienced so far, and 'was probably the most' absolute quiet.

Remember my post about enabling a new home? This is 'real life, not a vision) and Ed' why would not trade my job for anything in the world:)

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Finally yesterday we finally had a hand in that beautiful Editorials little family of servers. A company which - according to the standards seen to date - to move from one server to another server 4, change the locations of the Ethernet network, install two Catalyst 2960 in the new cabinet, set them up and wired, should take about 2 days and 'life a little more than' two hours of actual work. We've eliminated the old 10/100 network switch, server, and finally the backbone of the 'gigabit (copper), even if no physical redundancy (RSTP and' nevertheless already 'set up and ready for the addition of two new switch). While the technicians were doing their jobs editorial sull'editoriale to migrate services Aste83 and I are committed to move the server metaframe 4 ... arduissimo work: 30 'net is already' we were installing Director on all MetaFrame. Finally, the servers are all over each other, together (the 4 on the xSeries SAN). In the days before we had converted a united 'RAID logical previously made in RAID-5 (out of 9 discs: - /) in a RAID-10, since the amount' of data that these discs will have to manage inbound and outbound. One moment of near-panic 'when tapping into the power of one of the FC switch that shuts off the switch itself (now the cable did not come off' of course) but 'it has enabled us to prove that the MPIO works :))) and I finally

'is also clear how much of the editorial applications (mica for anything else, but because' understand that form around pictures before entering the page should have seen it in the bud).

short, a much less painful step of the previous weeks (GPO metaframe completely wrapped on a total revision of the entire production environment, SAN RAID-1 with a seemingly lost and irrecoverable, just the 100-odd GB of data - recovered the next day by Aste83 ...) but ... and 'was almost pleasant, I enjoyed it a lot. Only faint and 'lack of sleep ... we started at 20 and finished at 1:45 but all in all, and it 'worth it:)))