Greatest Hits

4
votes
7answers
19k views

ConfigMgr 2012 - How to automatically make updates available to computers without forcing them to be installed?

I'm using System Center Configuration Manager 2012 with the Software Update Point feature; however, in this environment patching has to be strictly manual, because server reboots need to be approved ...
1
vote
1answer
9k views

OpenVPN connected but not internet access on the client

I've setup OpenVPN following this tutorial, and everything works fine except that I don't have an internet connection on the client while connected to VPN. ...
1
vote
1answer
4k views

Nginx error: “Primary script unknown” while reading response header from upstream

I have installed Nginx 1.6.2 with PHP-FPM (PHP 5.5.18) under CentOS 6.6 server. I didn't touch nothing else but /etc/nginx/conf.d/default.conf file where I made some changes (see below): server { ...
0
votes
2answers
7k views

how to get mysql.sock file, mistakenly deleted from “/mysql/tmp/”

I was stuck with a PDO Exception PDOException: SQLSTATE[HY000] [2002] Can't connect to local MySQL server through socket '/tmp/mysql.sock' (2) in lock_may_be_available() (line 167 of ...
9
votes
2answers
9k 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 ...
8
13
votes
2answers
32k views

Upgrade CentOS 5.x to CentOS 6.x - tips and techniques

Now that CentOS 6.0 is making its way to the various mirror sites, I wanted to solicit opinions on the upgrade process. In working with the commercial RedHat 5.6 and 6.x distributions for the past few ...
1
vote
1answer
35k views

How do I configure port forwarding on a Watchguard XTM 2?

I have one external static IP that is nat'ed by the XTM to a local network, I would to be able to configure port forwarding on it (say external:80 -> 10.0.1.43:80 and external:2340 -> 10.0.1.48:2340). ...
5
votes
5answers
24k views

How to extend a Linux PV partition online after virtual disk growth

VMware allows to extend the size of a virtual disk online - when the VM is running. The next expected steps for Linux system are: extend the partition: delete and create a larger one with fdisk ...
3
votes
2answers
11k views

How to do the port forwarding from one ip to another ip in same network?

I would like do some NAT in iptables. So that, all the packets coming to 192.168.12.87 and port 80 will be forwarded to 192.168.12.77 port 80. How to do this with iptables? Or Any other ways to ...
5
votes
2answers
12k views

script not found or unable to stat: /usr/lib/cgi-bin/php-cgi

I have just seen a new series of error in the /var/log/apache2/error.log [Thu Oct 31 06:59:04 2013] [error] [client 203.197.197.18] script not found or unable to stat: /usr/lib/cgi-bin/php ...
7
votes
2answers
5k views

Is IIS SFTP natively supported by Windows Server 2012 R2?

Does Windows Server 2012 R2 have native SFTP support? I see a role FTP Server but it doesn't say whether this includes SFTP.
14
votes
4answers
28k 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 ...
1
vote
3answers
40k views

How do you move Exchange 2007 Public Folders to Exchange 2010?

I'm upgrading my organisation's Exchange set-up from 2007 to 2010 (by provisioning a new server with 2010 on, moving the mailboxes across, then decommissioning the 2007 server). The move went by ...
3
votes
3answers
15k views

HDD: performance differences between 7.2k SATA and 15k SAS

What is the rule of thumb in performance characteristics and differences between 7200rpm (SATA/SAS) and 15000rpm (SAS) hard disc drives of the same generation?
10
votes
6answers
25k 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 ...
3
votes
1answer
15k views

what is acceptable datastore latency on VMware ESXi host?

Looking at our performance figures on our existing VMware ESXi 4.1 host at the Datastore/Real-time performance data Write Latency Avg 14 ms Max 41 ms Read Latency Avg 4.5 ms Max 12 ms People ...
2
votes
6answers
47k views

How do i change the max attachment size in exchange 2007?

I'm confused. i've changed the transport limits in organisation configuration>global settings> transport settings. I've also altered it in the send and receive connectors max message size. When i ...
37
votes
6answers
3k views

Is my Hard Drive Failing?

I just tried to run a test on my hdd and it doesn't want to complete a self test. Here is the result: smartctl --attributes --log=selftest /dev/sda smartctl 6.2 2013-07-26 r3841 ...
3
votes
3answers
11k views

How To Properly Setup DNS Forwarders On Windows Server

I was wondering how to properly setup DNS forwarders on Windows Server 2008 R2. I have three Domain Controllers. Each of the DC's have have following: AD Role DNS Role DHCP Role Static IP Address ...
0
votes
2answers
9k 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 ...
3
votes
6answers
15k views

This network location can't be included because it is not indexed

We are in the process of migrating a bunch of users' home directories onto a new server running Windows Storage Server 2008 R2. For most users, this has gone well and our group policy has done its ...
5
votes
3answers
33k views

centos 100% disk full - How to remove log files, history, etc?

mysqld won't start because disk space is full: 101221 14:06:50 [ERROR] /usr/libexec/mysqld: Error writing file '/var/run/mysqld/mysqld.pid' (Errcode: 28) 101221 14:06:50 [ERROR] Can't start server: ...
1
vote
2answers
5k views

(network unreachable) error in my server logs

I'm getting lots of network unreachable lines in my Centos' messages log file. They seem they can't resolve to certain addresses which I do not have any ideas why my server has to resolve to them in ...
2
votes
2answers
54k views

How do you repair active directory after a partially renamed domain controller?

I have a 2008 Server (only DC in the domain) which crashed during a rename. As a result it left the system half renamed. The computer name had been changed to DC1 but there were still many references ...
3
votes
1answer
8k views

unable to write to mount point (nfs-server), getting “Permission denied”

I'm trying to configure NFS between two RHEL7 nodes: first node: [root@ip-10-164-175-246 ~]# cat /etc/redhat-release Red Hat Enterprise Linux Server release 7.0 (Maipo) [root@ip-10-164-175-246 ~]# ...
7
3
votes
3answers
24k 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 ...
3
votes
2answers
10k 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 ...
3
votes
2answers
10k views

Some systems cannot connect to ldap via ldaps, but others can, is it the wildcard cert?

When trying to make ldaps connections to my Novel eDirectory 8.8 server, sometimes I have to put TLS_REQCERT never in the client servers ldap.conf file. Obviously, this is a bad idea. The command I ...
3
votes
2answers
10k views

Logging in with local admin account after joining domain

I was under the impression that once you joined a domain that the local admin account would be disabled. I did the following in Azure: Created Windows Server 2012 R2 instance and promoted to domain ...
7
votes
2answers
5k views

Managing Windows Powershell from Linux terminal

I manage some Windows Server 2012. I'm learning PowerShell to manage this servers through command line. My workstation runs Ubuntu and I connect via ssh to manage Linux servers. There is a way that I ...
5
votes
5answers
40k views

Why won't my logon scripts map drives under Windows 7?

Why won't my logon scripts map drives under Windows 7? I'm using a vb script similar to the one below, the script runs using a group policy. Dim WshNetwork Set WshNetwork = ...
2
votes
3answers
13k 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 ~]# ...
2
votes
2answers
10k views

What is a minimal useful unattend.xml file for SysPrep on Windows 7

Could you provide a minimal unattend.xml file for use in Windows 7, which will be manually installed, updated and configured on one workstation, then SysPrep will be run like this: ...
8
votes
2answers
17k views

Generate an OpenVPN profile for client user to import

Is there any documentation or resource describing how to generate and host a profile for an OpenVPN client to import? Ideally would like my users to not have to separately fetch a .zip file of the ...
13
2
votes
1answer
18k 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 ...
4
votes
2answers
23k views

Why is Windows Update suddenly failing with error 0x80244019?

Since installing updates yesterday, one of our 2008 R2 servers refuses to connect to our WSUS again and, instead, reports the unknown error 0x80244019. Connecting to the official Windows Update ...
10
votes
4answers
18k 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 ...
6
votes
3answers
48k views

Make windows 7 client compatible with windows 2003 server

I am sysadmin for a small business with 30 clients. We have a server running windows 2003 and all the client-computers run windows XP. Now this is not an important issue, but it would be nice if it ...
11
votes
3answers
4k views

Protecting against POODLE SSL on stunnel

How can I mitigate POODLE SSL vulnerability when using stunnel as HTTPS reverse proxy?
7
votes
3answers
19k views

How to “restart” particular network interface on RHEL?

In RHEL, instead of using service network restart command, how can i restart a particular network interface, lets say "eth1", with only one command. "Only one command" because that is the only ...
2
votes
2answers
25k views

Dell PowerEdge - Add new disk to an existing RAID 5 array

I have a Dell PowerEdge with a RAID 5 array of 3 disks, and I want to add a fourth disk to it to expand the capacity of the volume. I don't want to reinitialize the whole RAID 5, because I want to ...
7
votes
4answers
8k 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 ...
1
vote
4answers
15k views

kinit & pam_sss: Cannot find KDC for requested realm while getting initial credentials

I have a very similar problem as described in this thread on CentOS 6.3 authenticating against a 2008R2 AD DC. Here is my krb5.conf, I know for a fact that XXXXXXX.LOCAL is the true domain name: ...
6
votes
5answers
29k 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 ...
1
vote
3answers
6k views

Force IE 11 compatibility mode for certain sites within domain

When setting compatibility mode in IE 11 it wants to add our whole domain (somedomain.co.uk) but we don't want every site (*.somedomain.co.uk) to be covered by this. We want just ...
8
votes
1answer
9k views

dhclient: What does “RTNETLINK answers: File exists” Mean?

I wanted to update the DHCP lease of an Amazon EC2 instance, so I executed the following command: user@host:~$ sudo dhclient Following that, the system's DHCP lease is updated successfully updated. ...
2
votes
1answer
12k views

How to find my TeamViewer ID on SSH?

When I tried to run the command teamviewer --info I am getting the following output root@vps [~]# /opt/teamviewer8/tv_bin/TeamViewer --info TeamViewer 8.0.20931 teamviewerd ...
5
votes
2answers
14k views

How to troubleshoot connectivity when curl gets an *empty response*

I want to know how to proceed in troubleshooting why a curl request to a webserver doesn't work. I'm not looking for help that would be dependent upon my environment, I just want to know how to ...
8
6
votes
3answers
27k views

User in domain admin group cannot access directory the group has permission to access

I've run into a rather interesting issue when playing with one of my domain labs. There's a directory on a 2008 R2 fileserver that's being used for folder redirection for all users in the "Staff" OU. ...
0
votes
3answers
8k views

Postfix: “Connection timed out” on all outbound email

I've been attempting to setup mailing lists with GNU Mailman but it's been a complete disaster with tons of road blocks. Postfix is able to receive email but not send it back out at all, I've peeked ...