• Ansible Syntax

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  • Active Directory en spiceworks

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  • SQL understanding - power outage

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    scottalanmillerS

    @BBigford said in SQL understanding - power outage:

    @scottalanmiller said in SQL understanding - power outage:

    @BBigford said in SQL understanding - power outage:

    Here's what the person I heard it from said:

    "likely easy to talk on the phone (i'm on a conference call, but have time this afternoon).

    The term is quiescence, that you are looking for. This means that writes have been halted, and all data in buffer has been flushed. Part of the challenge here is this needs to be done not only at the app layer, the OS layer, the storage layer underneath that (and even at the drive level, as cheap consumer SSDs and SATA drives will have write buffers not protected).

    Modern SQL commits writes first to the transaction log then to the database, and in the event of a power loss can "replay" the transaction log. The problem is if the log is large the can take a REALLY long time, and if you have systems underneath that ACK'd writes at the SCSI layer out of order (Consumer level SSDs) this might not properly recover."

    Not really sure what data is sitting in the buffer during a power outage though. Meta data waiting to be written to tran logs? So then when a power outage happens and that buffer gets flushed, there's an inconsistency in those tran logs that were mid-write...

    That's where atomic commits come in. They make sure that everything is quiesced before anything goes to the database. ZFS does the same thing for different tasks. This really isn't an issue in a properly designed database - unless you've added a caching layer yourself that doesn't honour the flush commands from higher up the stack. Then it is on your own head. You could always put your database into RAM and cause it to fail like that if you wanted.

    I found out what he was talking about. Commit to tran log > Application acknowledge transaction > written to DB. The data that gets flushed shouldn't matter because most applications wouldn't acknowledge something that isn't commit. So if there was a power outage then the tran logs could just replay, app acknowledges, and so on.

    I was missing something, and only thinking of tran logs and the database. Didn't think he had been talking about the front end.

    Ah, okay. Yeah, if the application doesn't wait for the database, it's just being reckless.

  • Screen Flicker and 'color' filter software

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    scottalanmillerS

    Dominica uses it because the blue light keeps her more awake and she often just wants to fall asleep when using her phone.

  • XO Config export and import

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    DustinB3403D

    Just finalizing the conversation here that we feel pretty confident in the changes we've made to the update script.

    You can update by downloading a new copy of the script or manually making the changes to the file.

    The script will now reset any custom git changes that don't match the source, then the script will proceed, and make the necessary changes to enable the feature so you can import your config files.

  • Mitel phone won't log off ACD group

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    DashrenderD

    @momurda said in Mitel phone won't log off ACD group:

    I used to love Mitel systems when i had to use them in the past. They can do anything you could think to do with a phone call. I am actually donating the old Intertel Axxess system here and about 35 handsets(look like the ones you have in your pictures) at the end of the week.

    Have you tried doing this both off hook and on hook?

    No I haven't. you have 35 handsets, eh? do they work?

  • Large Linux Samba Server On Hyper-V 2012 R2 - Caveats? Best Practices?

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    scottalanmillerS

    @wirestyle22 said in Large Linux Samba Server On Hyper-V 2012 R2 - Caveats? Best Practices?:

    So does the host file system (NTFS) not manage the partition the VM file system is on (XFS)? Is that why @scottalanmiller is saying to separate the two? i'm a little confused how the two interact or if they interact directly/indirectly.

    The VM's storage is just files. Literally each individual file system in the VM is a file on NTFS or ReFS. So from Hyper-V we see a series of files. To the VM they are normal disks.

  • No 2 step verification for a cloud based email backup/archival solution!

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    S

    @larsen161 From a security perspective, I wanted to use separate u/p for my email system and archives.

    Later, Backupify did tell me that they were planning to implement 2fa in 2017 but I would wait for it to happen to believe it as I have been chasing this feature since 2012!

  • Copper head for Android

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  • ITs Big Secret

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    DashrenderD

    @scottalanmiller said in ITs Big Secret:

    @Dashrender said in ITs Big Secret:

    The whole reason for my post was the notion that the employee would go running to their boss because IT is making them unproductive, at least in perception, if not in reality.

    That's for them to do, not IT. IT would verify it if needed, but not by default be the tattle tales just for the sake of reporting on employees.

    which was exactly the post I was responding to above.

  • 1 Votes
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    DashrenderD

    eJwqC0f.png

    This picture doesn't really say much, and now that they've fixed their inbound TLS issue, perhaps the unencrypted number will be a lot smaller from now on... just thought I'd share what they shared.

  • Any symantec netbackup admins here??!!!!

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    scottalanmillerS

    @RoopanKumar said in Any symantec netbackup admins here??!!!!:

    OK, now I need to setup like 2 windows server, 2 Linux and 3 DB server with netbackup

    what will the hardware configuration for that setup
    RAM?CPU?HDD?

    That's tiny. NetBackup is meant for enterprise environments. I've never heard of any NB deployment with fewer than three or four hundred individual servers. That's less than a single server there! Why NB?

  • Views on Halizard

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    KOOLERK

    @Net-Runner said in Views on Halizard:

    @KOOLER said in Views on Halizard:

    We'll keep free version CLI-managed, like Hyper-V is. Initially Linux-based VSA with a web mgmt will be free as well

    That's awesome! Do you have any ETA's yet?

    Mid-January 2017.

    P.S. I hope so ;)))

  • Hyper-V VM unable to ping gateway but host can

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    wirestyle22W

    @Dashrender I'm not sure. I think it was for a timeclock so they just wanted something setup quickly. I don't even know if he's the person who did the initial install. We took over for another company and are still finding stuff.--

  • IT is Complex

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    DashrenderD

    @scottalanmiller said in IT is Complex:

    @Dashrender said in IT is Complex:

    management - you mean anyone who it's IT. For most it seems if you say you are IT, then they assume you know anything/everything to do with computers. Plus they lump things that aren't IT into IT.

    And not just broad knowledge, but historic and insanely current, too. That computer from thirty years ago that is nothing like any machine today and for which there is no documentation; you know all about that thing, right? And this new technology that just released this morning while you were busy in a meeting and haven't even been to your desk yet, you've already studied it and have years of experience on it, right?

    Here Here!

  • Server 2012 R2 - Enabling Deduplication on operational shares

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    DustinB3403D

    @travisdh1 yep...

  • 0 Votes
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    DustinB3403D

    @Danp a distro upgrade would likely be the easier approach. I'm performing this now on my system.

    (first day back to work in 11-days!)

  • Using internet only for a day

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    thwrT

    I had pretty good success with pfSense in the past. It features a built-in captive portal and guest vouchers. Stable, reliable and highly customizable. Plus there's no need for spezialized access points or wireless controllers.

    https://doc.pfsense.org/index.php/Captive_Portal
    https://doc.pfsense.org/index.php/Captive_Portal_Vouchers
    https://doc.pfsense.org/index.php/Category:Captive_Portal

  • The Leap Second is Coming

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    wirestyle22W

    @Reid-Cooper said in The Leap Second is Coming:

    @wirestyle22 said in The Leap Second is Coming:

    Alan Rickman 😞

    What?

    His link has a picture of Alan Rickman who passed away this past year 😞

  • FreeIPA Automounting NFS

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    JaredBuschJ

    The only Ubuntu system I have is my UniFi controller