All Questions

0
votes
1answer
52 views

changed the name of the computer - SQL server

i changed the computer name, and entered this commands in SQL server management studio (ssms) sp_dropserver <old_name>; sp_addserver <new_name>, local; i press this query select * ...
0
votes
1answer
1k views

mount cifs permission denied

Hi I have tried to mount with three ways for all of them I got the same error. 1) sudo chmod 777 /estore sudo mount –t cifs -o user=domain/username%MYPASSWORD,noserverino //domain /estore 2) sudo ...
0
votes
1answer
1k views

How to do Virtual IP Setup in Mac OS X?

I have two Apache Load Balancer setup on two different systems, for example 127.0.0.1 and 127.0.0.2 IP addresses. Now I want to configure Virtual IP in another system (127.0.0.3) and all the requests ...
1
vote
2answers
2k views

Postfix 451, 4.3.0 : Temporary lookup failure

we've followed the guide HERE to configure a Postfix. After sending a message via telnet we receive the following error: Oct 8 18:52:01 mail postfix/smtpd[3719]: connect from unknown[10.10.10.9] Oct ...
0
votes
1answer
16 views

unable to SSH into my AWS EC2

My security group has the following 1. Type Oracle-RDS 2. Protocol TCP 3. Port Range 1521 4. Source Custom - 0.0.0.0/0 1. Type SSH 2. Protocol TCP 3. Port Range 22 4. Source Custom - 0.0.0.0/0 I ...
0
votes
0answers
13 views

How can I make the Domain Controller the client's default gateway?

I'm migrating from a SBS 2008 DC to a Windows Server 2016 DC. On the SBS DC, DHCP is set up and I've migrated this successfully to Server 2016. The PC's in the office use the SBS DC as their default ...
2
votes
1answer
87 views

How to clone Linux hard drive to smaller flash drive

Currently, I'm trying to clone a hard drive that has Linux installed to a 16GB flash drive. The hard drive is 233GB, but df -h shows that only 3.5G is in use. Can I use Clonezilla to create an image ...
0
votes
0answers
17 views

Need to correlate ps and load average

Let's say that I have 4 CPUs. In that case, load average should not go beyond 4 for better performance, it means only 4 threads can be run at a time (i.e., only 4 should be in R status in ps output). ...
0
votes
0answers
16 views

mysql high CPU usage

I have 2 servesr both on a LAMP stack. Two servers running almost the same PHP code. And on the second server i have troubles with loading time, where ttfb is too high, sometimes it is up to 17 sec. ...
0
votes
1answer
11 views

Only certain environment variables are set in systemd

I have a systemd file starting a JupyterHub: [Unit] Description=Jupyterhub [Service] User=root Environment="PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/...
0
votes
1answer
1k views

VirtualHost's behind an nginx reverse proxy fail to resolve properly

I have a load balancer pair in front of 4 web servers which run nginx on port 80 and proxy to apache on port 8081 for non-static content like php code. I'm running several domains in this ...
1
vote
1answer
1k views

Using Webdriver with Chrome — missing Shared Libraries

I am trying to run webdriver, but I keep getting the following error: [ec2-user@ip-172-30-0-41 ~]$ sudo ./chromedriver ./chromedriver: error while loading shared libraries: libgconf-2.so.4: cannot ...
0
votes
2answers
33 views

UFW is blocking mailserver traffic (dovecot, postfix, MariaDB, Rspamd)

As described in the title, I am running a dovecot/postfix/Rspamd Mailservercombo with a MariaDB behind it. I noticed how, in the last days, I couldn't receive/send any mail from my e-mail clients ...
0
votes
0answers
11 views

High CPU load and high number of /usr/bin/php-cgi [on hold]

I am running wordpress site one a vps with 25000 visitor/day. i am using centos 7 with LAMP. from 15 days i found very high cpu load and very high numbers of "/usr/bin/php-cgi" i found this when run "...
0
votes
0answers
8 views

How do I change the permissions of files uploaded in /tmp/ by Apache running PHP?

We are running a Moodle (PHP) website - when files are uploaded, they are placed in /tmp/ by default, with a naming structure such as phpxxxxxx and these file permissions: -rw-------. 1 apache apache ...
0
votes
1answer
4 views

WMIC on multiple remote PC's failing with: Failed to open Node-list file

wmic /node:@PC-list.txt os get csname,installdate Command above yields this error: Failed to open Node-list file (Please check the filename).
0
votes
0answers
7 views

Can internet connection performance on client side of rdp connection affects server application performance?

Our company develops a Winforms based desktop application that we host on our servers. Our customers use our software via RDP. A question was recently asked if the client's internet connection could ...
17
votes
4answers
37k views

Automatically close netcat connection

I am executing the following command from a script: echo '{"hostUp": true}' | sudo /usr/local/bin/netcat localhost 8001 However, the netcat client stays open indefinitely. How can I close the ...
0
votes
1answer
32 views

Unusual hits in Apache log for localhost site

I have an Apache 2.2 webserver running on Windows 7 with six virtual hosts set up. Domain name A points to ?:/.../urls/1/ Domain name B points to ?:/.../urls/2/ Domain name C+D point to ?:/.../urls/3/...
32
votes
3answers
25k views

What is the rest of the 127.0.0.0/8 address space used for?

We all know what 127.0.0.1 is used for (loopback). But is the rest of the reserved 127.0.0.0/8 loopback space widely used for anything?
1
vote
1answer
377 views

Determining printers with state “Needs New Driver” via WMI/VBS

Everytime a change is made to our print server, some printers from what staff (without admin rights) have added to their printer list report "Needs new driver" in Devices & Printers (pre Win 10)/...
0
votes
1answer
72 views

Backup upgradable packages with dpkg-repack on debian

I want to list upgradable packages and automatically repack them to .debs. My try: fakeroot -u dpkg-repack `apt list --upgradable | cut -f1 -d"/" | awk '{if(NR>2)print}'` So it gets package names,...
0
votes
1answer
11 views

search string for regex and return value

i need a string checked for an Regex and the Match should be returned into a variable. I read line by line through the data, and for that, i have some data i have to extract from that line. I checked ...
-1
votes
1answer
1k views

How to configure a server with nginx on for load balancing only?

There are many tutorials out there explaining how to set up nginx 1.4.6 as a load balancer but I did not get beyond receiving a 502 Bad Gateway or 403 Forbidden configuring it on an Ubuntu 14.04 ...
1
vote
1answer
1k views

Possibility to have two versions of same printer driver on Windows Server 2008 R2

I have print server running Windows Server 2008 R2 with cca 100 of print queues installed. For easier handling of printer driver updates, mainly universal drivers from printer vendors are being used. ...
0
votes
0answers
8 views

Connections shows up in tcpdump but cannot not in auditd or ss

I ran tcpdump on a node which I can see many outbound TCP connections to a specific host (inside my network) on a specific port (8086). I'd like to know which process is making those connections. I ...
0
votes
1answer
37 views

Capture the VOIP calls receive to a sip phone that send Notificantions to an API on a call

This is whats I'm trying to achieve I want a SIP phone or (is there is any other way I'm open too) to take the calls it receives from a VOIP provider take the information related to the call when ...
-1
votes
0answers
12 views

connect to localhost using PC name [on hold]

I have a localhost set in my windows 7 computer using XAMPP. My computer's name is "asus-pc". I am able to access localhost through http://asus-pc/ through other desktop computers, but this doesn't ...
1
vote
1answer
62 views

missing '=' etcd when defining service file

I'm struggling while following Kelsey Hightower's "Kubernetes the Hard Way" tutorial. I've gone off script, because I'm trying to bootstrap k8s on a local server. I've got the point where I'm ...
0
votes
0answers
19 views

FreeBSD in production / performance and other implications of Jail per service setup

I'm setting up a FreeBSD server as a production environment for a web app. The stack is nodejs, MongoDB and Nginx. It's very tempting to have each of those services in a separate jail, but I'm not ...
1
vote
2answers
1k views

Removing a “semi joined” Ubuntu workstation from an Active Directory domain

I am joining an Ubuntu workstation to an MS AD. I had 1 or 2 config issues when I first tried to run net ads join which resulted in an error message and the workstation not being added correctly I ...
1
vote
1answer
1k views

What happens to a random bit error in the cache on an Intel CPU?

I have a system with ECC RAM and a Xeon E3 CPU. My understanding is that ECC circuits on the RAM will detect corruption from random bit errors in the RAM chips. But what happens to random bit errors ...
-2
votes
0answers
13 views

New to SQL - SUMing just some rows of a column and how to save data to a variable? [on hold]

I'm on MySQL 8.0 and using MySQL Workbench. I just started to learn MySQL and I'm having a lot of trouble figuring out how to do this. I have a table called 'business_ledger' and the following fields:...
0
votes
0answers
19 views

Where should we host our files? [on hold]

We have a project, in this project our clients require to download files (Completely static files). Those files are going to be around 400 MB. We are looking at around 1 million clients. So we could ...
0
votes
1answer
23 views

Cannot resolve private DNS names in private hosted zone

I have a VPC in AWS, and I want to create aliases for some of my resources on the network. For example, I want to be able to connect to my RDS database with "databasehost". However, I also still want ...
0
votes
0answers
16 views

Option to enable/disable connecting to php file or mysql using mobile data?

Is there any option to enable/disable connecting to PHP file or MySQL using mobile data? Because this happened with me 2 days ago, and all users couldn't connect via mobile data all day, but they ...
0
votes
0answers
13 views

I can't connect to my public ip adress, using XAMPP [on hold]

I'm trying to host a website on my computer. It works fine when I'm trying to connect to localhost, but I can't connect to my public IPv4 address. XAMPP Apache runs on port 80, so I port-forwarded ...
0
votes
0answers
11 views

Access router web using SSH - connection refused [on hold]

I'm trying to get to my remote router's web UI via private server that's behind it using SSH. Should I use local port forward, or remote? I tried -L localport:router-ip:remoteport serverhost. I get ...
0
votes
0answers
4 views

Azure Event Grid Subscription is unable to connect to ngrok public url

I have a newly created Event Grid Topic. I want to add a new WebHook Subscription to a public url generated via ngrok (I'm following instructions here: https://blogs.msdn.microsoft.com/brandonh/2017/...
0
votes
1answer
21 views

Basic Powershell script strange behaviour

I have small script. Which i want test it with "If, else statement". I have the same value variables but when try to compare it, it gives else condition, but it should give true condition. Below are ...
-1
votes
1answer
30 views

Debian 9 give User permission for all folders

How can I give a user permissions for all folders? So /home, /var etc.
0
votes
0answers
16 views

IIS Rewrite for single query string to SEO version

I am trying for hours to get the following IIS rewrite to work: Incoming URL: https://example.com/services/control/status?Id=SO1234567 Expected output: https://example.com/orders/detail/SO1234567 ...
0
votes
1answer
963 views

ansible [WARNING]: Ignoring invalid attribute: update_cache

I'm not sure why I'm getting this warning. I've already checked the apt module and it says: update_cache bool Choices: no ← yes Run the equivalent of apt-get update before the operation. Can be run ...
0
votes
1answer
1k views

Configure IIS to use Active Directory authentication

I have hosted a website on a server within the Enterprise network. The website needs to be accessible from machines(PC/Mac) in the network as well as from devices like tablets outside the network(...
19
votes
6answers
43k views

How to restore PostgreSQL database from .tar file?

I have all PostgreSQL databases backed up during incremental backups using WHM, which creates a $dbName.tar file. Data is stored in these .tar files, but I do not know how to restore it back into the ...
0
votes
1answer
12 views

rndc: 'flushtree' failed: unknown command

I'm very new to learning and administering DNS with FreeBSD under BIND9. I find myself in a unique situation where I'm having an an error administering the flushtree command with rndc. I'm not sure ...
1
vote
1answer
19 views

Installing a package using SCCM fails with error 0x87D00324(-2016410844) but package is not installed

VMWare Tools are usually installed through SCCM and now the newer version will not be installed through SCCM on all machines. So for some I do have the following failure. The error code semes to be ...
0
votes
0answers
7 views

Tomcat 8 slow applications initialization

I found quite a few threads on "slow start" of Tomcat, but none related to slow web applications initialization. I am using a Tomcat 8 with Java 8. Most of the time it uses only a fraction of the ...
1
vote
0answers
48 views

Using powershell can a non-admin user, change password of a user of remote machine which has windows operating system if existing password is known?

I have 2 machines. From machine A i log in as a user without admin privileges. I need to change the password of another user say BUser who is administrator in machine B by providing the existing old ...
2
votes
2answers
2k views

Slow writes for VM in Xen?

I have a server running Xen and a couple of VMs. I'm trying to set up a RAID array that's dedicated to one of the VMs in particular, which will be used for various storage-intensive purposes. ...

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