Greatest Hits

5
votes
4answers
22k views

Limitations of SQL Server 2012 Express version?

I'm aware that the SQL Server 2008 R2 Express was limited to 1 CPU and 10 GB Databases. It's not clear if Microsoft bumped those numbers up to be more reflective of 2012. I looked at several places ...
3
votes
4answers
23k views

Cannot login to SQL Server 2008 R2 with Windows authentication

When i try to connect to SQL Server (2008 R2) using Windows authentication: i cannot: Checking the Windows Application event log, i find the error: Login failed for user 'AVATOPIA\ian'. ...
17
votes
3answers
3k views

Run multiple servers on the same port

I would like to run a XAMPP server, and a Nodejs server on the port 80. If the server get a HTTP request, then XAMPP will handle it, if the server get a Websocket request, then Nodejs How is it ...
7
votes
4answers
6k views

Inaccessible_boot_device after installing KB2919355 on Server 2012R2

I have a server 2012r2 machine that I just installed KB2919355 (the mega 800+MB patch recently released for Windows 8.1 and Server 2012). Server is a Dell Poweredge R715. Disks are 2x500GB SAS in ...
5
votes
1answer
33k views

How to force background colour with GPO centred wallpaper?

As subject really. I can force a wallpaper through GPO, but how can I mandate that the desktop should be black? We have a mix of XP, Vista, and Windows 7 machines.
3
votes
2answers
39k views

How do I allow remote access to mysql using xampp?

I'm using xampp and navicat to manage mysql on two dev machines (laptop & desktop). The laptop is my main machine, while the desktop acts as a local dev server for the group. Connecting to mysql ...
1
vote
1answer
4k views

You don't have permission to access /cacti/index.php on this server

in cacti.conf I tried to edit the default context from localhost to 0.0.0.0 (and everything in between). Now I only have Alias /cacti /usr/share/cacti <Directory /usr/share/cacti/> ...
10
votes
2answers
37k views

Tuning (and understanding) table_cache in mySQL

I ran the excellent MySQL performance tuning script and started to work through the suggestions. One I ran into was TABLE CACHE Current table_cache value = 4096 tables You have a total of 1073 ...
20
votes
2answers
25k views

IIS 7.x Application Pool Best Practices

We are about to deploy a bunch of sites to some new servers. I have the following questions about application pools: 1) It seems advisable to have an application pool per website. Are there any ...
10
votes
2answers
8k views

How to disable SSLv2 or SSLv3?

Anyone know how to disable certain SSL versions and only enable others in IIS 7.5?
0
votes
2answers
5k views

kinit: Cannot contact any KDC for realm 'UBUNTU' while getting initial credentials

I am installing Kerberos5-1.12.1 on ubuntu machine by following the link: http://techpubs.spinlocksolutions.com/dklar/kerberos.html#krb-install Whenever i am trying to do : kinit user1 I am ...
6
votes
3answers
21k views

What's eating my drive space when normal files + hidden + system doesn't equal total drive space used

This is very strange. All directory sizes are normal, and all other folders are within 20GB of what they should be. The discrepancy is that I can’t locate the files that are consuming 150GB of ...
4
votes
2answers
12k views

How does ServerName and ServerAlias work?

It's the following part of a virtual host config that I need further clarification on: <VirtualHost *:80> # Admin email, Server Name (domain name), and any aliases ServerAdmin ...
1
vote
1answer
7k views

Telnet Results in “Connection closed by foreign host”

I'm not a networking guy, so I apologize if my question is dumb. I have two Ubuntu machines setup on Amazon EC2. I need to "talk" from one to the other via port 9300. On my receiving machine, I ran ...
5
votes
1answer
13k views

Why does WireShark think this frame is a TCP segment of a reassembled PDU

Please find a small pcap file here illustrating my problem. I have a three-way TCP handshake, followed by two FIX logons. (FIX is a protocol used in trading.) The first FIX logon (frame 4) is ...
0
votes
3answers
13k views

How do I configure IE10 Group Policy Settings on Server 2008 R2?

Where do I find the proxy server setting while creating a group policy? I know that IE 10 removed the IE Maintenance Policy. I read that you need to go through the Preference route. However, even ...
5
votes
2answers
7k views

Creating SFTP users and jailing to chroot on CentOS - user authentication error

I've got a CentOs release 6.4 with Digital Ocean and would like to successfully create SFTP users and jail them to the user's own chroot home directory but I fear I'm making a mess of this. I've ...
1
vote
3answers
3k views

Trouble Installing Windows Server 2008 on Dell PowerEdge R720 w/ PERC H710 Mini

Just picked up a Dell PowerEdge R720. I created a virtual disk with the PERC H710 Mini BIOS Configuration Utility 4.03-0002 and configured it for RAID 1. When I then go to try to install Windows ...
1
vote
4answers
20k views

I can connect to Samba server but cannot access shares.

I'm having trouble getting samba sharing working to access shares. I have setup a stand-alone box running Fedora 16 to use as a file-sharing and web development server. It needs to be able to share ...
11
votes
1answer
14k views

Can someone please explain easyrsa vars options for PKI generation

I am using OpenVPN and whilst I can generate certificates using easyrsa just fine I don't really understand the settings in the easyrsa vars file: export KEY_COUNTRY="" export KEY_PROVINCE="" export ...
10
votes
6answers
19k views

Delete a iptables chain with its all rules

I have a chain appended with many rules like: > :i_XXXXX_i - [0:0] > -A INPUT -s 282.202.203.83/32 -j i_XXXXX_i > -A INPUT -s 222.202.62.253/32 -j i_XXXXX_i > -A INPUT -s ...
6
votes
5answers
26k views

Push new registry keys via group policy

Recently I have added registry keys in active directory and I need to push them via group policy instead of going to each PC to apply the new ones. How can I push new registry keys (not modify ...
9
votes
4answers
15k views

How to setup Gitlab with post-receive hook?

I am using Gitlab on one server and would like to push my git repository on commit of the master branch to another webserver. So when I push a new version of the website the production server gets ...
5
votes
4answers
39k views

How to boot ISO image using gpxe and memdisk?

I have a repository of an ISO images (many different OS installers in ISO format) under http://myrepos/*.iso. I would like to boot from that repo using gPXE (with/without memdisk if necessary) and ...
13
votes
5answers
35k views

How to find all hostnames in DNS attached to one IP?

If I have multiple hosts configured on one machine (a la apache's VirtualHosts), how can I do a lookup on the IP and find all domains configured to reach it? For example, I have several web and email ...
1
vote
2answers
4k views

phpMyAdmin Error - The configuration file now needs a secret passphrase

I keep getting an error "The configuration file now needs a secret passphrase" after installation of phpmyadmin. I have set the passphrase and also followed the instruction presented on phpMyAdmin not ...
4
votes
1answer
6k views

why isn't laravel's php artisan serve server being accessible from the WWW on IIS

I have a laravel application running through the laravel artisan server: php artisan serve and it works just fine if I go on my localhost:8000.. Further, I added an inbound rule in the IIS server ...
2
votes
3answers
20k views

How to investigate unexpected Linux server shut down?

In a new Xeon 55XX server with 4xSSD at raid 10 with Debian 6, I have experienced 2 random shut downs within two weeks after the server being built. Looking at bandwidth logs before shut down does not ...
1
vote
2answers
17k views

Too many concurrent connections Exchange 2010. What else is there to check?

I thought that I had this under control before. But for some reason during our last email marketing promo, I start receiving from our mass email client (built in house).. The message could not be ...
41
votes
6answers
18k views

How can I successfully mount an 8-bit SCSI drive on a modern computer?

I have a number of internal 8-bit SCSI-1 drives that I'd like to archive for historical purposes. These are all the old NeXT Cubes and NeXTStations (monochrome and color) that were used by id ...
8
votes
1answer
50k views

How do you mount an NFS Share in Windows 7?

I have FreeNAS exposing an NFS. How do I access this from Windows 7? I have enabled the "Services for NFS" within Windows Features.
5
votes
4answers
24k views

How to resolve FTP Error “Failed to retrieve directory listing” for Administrator account in IIS 7.5

Using my administrator account, I FTP connected to my IIS 7.5 FTP Site with FileZilla. I was able to successfully upload a file, but I keep getting a "Failed to retrieve directory listing" in ...
8
votes
3answers
14k views

Domain login very slow 10+ minutes

We are racking our brains trying to figure this problem out an are currently stuck! Basically we are having issues with some users taking ages to log in in the mornings, some times up to 20 minutes, ...
2
votes
1answer
14k views

Word 2013, KMS not activating, looking for clues

I have ONE office 2013 installation among a little more than half a dozen that is not getting activated by our KMS. Funny enough it is on my machine which got reinstalled some time ago - "last" of ...
12
votes
4answers
23k views

KVM: Which CPU features make VMs run better?

We are using Ubuntu 12.04 with the following parameters: Dell R910 Kernel 3.2.0-25-generic #40-Ubuntu SMP x86_64 x86_64 x86_64 GNU/Linux kvm 1:84+dfsg-0ubuntu16+1.0+noroms+0ubuntu13 qemu-kvm ...
31
votes
7answers
38k views

How do I reduce transaction log backup size after a full backup?

I have three maintenance plans set up to run on an Sql Server 2005 instance: Weekly database optimisations followed by a full backup Daily differential backup Hourly transaction log backups The ...
25
votes
3answers
36k views

Recommended DNS SOA record TTL default?

We currently have our DNS SOA record set to the following for stackoverflow.com: primary name server = ns1.p19.dynect.net serial = 2009090909 refresh = 3600 (1 hour) retry = 600 ...
13
3
votes
3answers
8k views

What is the source of thousands of 4625 Logon Failure errors with Logon Type 8 (NetworkCleartext)?

I have a Windows Server 2008 R2 system that's showing thousands of 4625 Logon Failure errors with Logon Type 8 (NetworkCleartext) in the Security section of the Windows Logs every single day. There ...
3
votes
2answers
7k views

umount Device or resource busy; already tried: mount, lsof, fuser, exportfs, ps axf

As part of an automated VM creation system a block device is mounted to a temporary folder ( /tmp/whatever ) . Various scripts install and configure the VM prior to it's first run. Recently ...
14
votes
1answer
16k views

Bandwidth limits for Amazon EC2

I have a micro instance on Amazon EC2 cloud. Also the instance is small and it has vary low CPU and EAM usage but it generates a lot of content, so it can be considered like a web server serving ...
1
vote
3answers
9k views

OpenVPN and Routing and IPtables

GOAL: Access internal network devices and browse web via the tunnel. 192.168.2.x = internal network 192.168.3.x = openvpn server 192.168.2.111 = openvpn server on internal network [root@openvpn ~]# ...
27
votes
7answers
41k views

Should I RAID my SSDs?

I have a couple of SATA hard disks RAIDed for safety in my machine, because I'm worried about the drive having some sort of mechanical failure and losing my data. I'm considering switching to an SSD ...
10
4
votes
5answers
21k views

Disk IO slow on ESXi, even slower on a VM (freeNAS + iSCSI)

I have a server with ESXi 5 and iSCSI attached network storage. The storage server has 4x1Tb SATA II disks in Raid-Z on freenas 8.0.4. Those two machines are connected to each other with Gigabit ...
7
votes
2answers
6k views

How can I override CMD when running a docker image?

I want to inspect a docker image created by someone else with both an entrypoint and cmd specified, for example: ENTRYPOINT ["/usr/sbin/apache2ctl"] CMD ["-D", "FOREGROUND"] I currently do: docker ...
5
10
votes
4answers
28k views

kjournald reasons for high usage

I'm trying to figure out why is kjournald going crazy on my machine. It's an 8-core box with loads of memory. It's got ~50% cpu load. The iotop doesn't seem to point at any specific processes - some ...
14
votes
3answers
38k views

How do I enable apache modules from the command line in RedHat?

How do I enable apache modules from the command line in RedHat? On Debian/Ubuntu systems I use a2enmod to enable modules from the command line. Is there an equivalent for RedHat/CentOS type systems? ...
5
votes
5answers
23k views

How can I manually run a nagios check from the command line?

When defining and testing new services in nagios I have been restarting nagios, then clicking the service, and rescheduling a check for as soon as possible, then waiting until the check happens. Is ...
6
votes
2answers
7k views

How to replace permissions and everything inside with icacls on Windows Server 2012?

Using Windows Server 2012 R2 AND Windows Server 2008 R2. I have a folder called C:\temp\test and I want to grant access to SYSTEM and a user and all files and subdirectories, and remove everthing ...
4
votes
1answer
5k views

PowerShell - Finding all of users' group memberships and kicking it out of them

as title says, I have to find all the groups that the user is a member of, and deleting its membership from all of them. I've tried this: get-adgroup -filter * | where {(Get-ADGroupMember $_ | ...
5
votes
3answers
22k views

Why wget doesn't verify SSL certificates?

I have a problem with my Fedora 8 installation. It looks that wget doesn't know how to verify SSL certificates any more. It's strange because I have another Fedora 8 box which I believe has the same ...