Newest Questions

Q&A for system and network administrators

Nginx https Redirect Loop, Not Using Port 443

I have a Nginx web server running on a CentOS 7 VM with the default site disabled and two server blocks within /etc/nginx/conf.d/mysite.conf /etc/nginx/conf.d/mysite.conf server { listen 443 ssl;...

Deploying Rails App by Passenger - Nginx - Ubuntu

I use an Ubuntu server. I installed Nginx and Passenger, and I created a rails app named BookReviewApp. However, I see the default Nginx page (index.nginx-debian.html) when I go to my webpage, I can't ...

ipa samba install failure socket did not correctly init

I am trying to setup a test environment to get ipa and and samba. I have two vms with the network setup and everything running. I am trying to setup ipa and samba but Im getting and error when ...

Single domain with multiple server names

I have a complex case below and i am not expert with domains at all: I have a domain in godaddy and it point to Wix website "mydomain.com" also i have a host in "asp.net" and need to use same domain "...

Why would I pick IPv4 or IPv6 for SSH access?

I'm setting up a Linode server and the Getting Started security guide suggests disabling ssh access over either IPv4 or IPv6 so that I only have one of the two enabled. I understand the general ...

Is that possible to clear fastcgi cache for each folder separately

I've some folders for WordPress themes inside a subdomain like.. [SUBDOMAIN.XYZ.COM/wordpress/themes/XYZ_1] [SUBDOMAIN.XYZ.COM/wordpress/themes/XYZ_2] this is my fastcgi constant fastcgi_cache_path ...

Restricting SSH access in GCE to Linux bastion host using firewall rules with source and target tags

I have several GCE instances all in the same project and same default network. I have designated one instance the "bastion" server, and want to block SSH from the internet to all instances except the ...

vagrant + laravel - update-alternatives from php7.1.1 to php5.6 still php7.1.1 from phpinfo()

I navigate a lot through forums but nothing helps me w/ this issue. I have Vagrant as VM and Homestead for Laravel. The initial settings were about php7.1.1, the last version. But I need to change the ...

infoblox Cannot add records to a zone that is not authoritative

we manage the dns for example.exm.uk I am trying to add an internal A Record url : www.server.example.exm.uk ip : 1.2.3.4 I get an error message "Cannot add records to a zone that is not ...

Difference between “Start application pool immediately” and Start Mode AlwaysRunning

In IIS Manager, an application pool has checkbox for "Start application pool immediately" in the basic setting dialog, and an advanced setting called "Start Mode" which can be set to "OnDemand" or "...

CentOS - IPv6 - use slaac for router and first IP but statically add second address

With IPv6 networking we prefer to configure as little as possible on the end device and rely on SLAAC to configure, default route and address info. and then manually add additional addresses as needed ...

Where To Begin - Coding Experimental Message Board System

Sorry if this is out of place but I'm lost trying to get on the right track here. I have basic Java and C++ skills and a BS in compsci. That out of the way here's my question: What languages, ...

pushing an image with two tags to gcr.io results in two different images

I'm doing the following: docker build -t gcr.io/projid/imgname:333 -t gcr.io/projid/imgname:latest . docker login -u _json_key -p "$(cat /secrets/service-account.json)" https://gcr.io docker push ...

dtrace vs systemtap, linux vs unix [on hold]

Python 3.6.0 is coming. And it has the feature of supporting systemtap. Before this, I knew nothing about systemtap. After some googling, I found dtrace and System Performace, authored by Brendan ...

ANAME / ALIAS records for BIND

I operate some DNS servers using BIND for around 15,000 domain names. Some customers would like to start using a Full-Site Content Delivery CDN and a requirement for this is supporting the usage of ...

Set ModProxy on Django app to access from remote a VM (geonode app)

I've got a setup with two servers: 1) Public IP - using Apache modproxy with ProxyPass and ProxyPass reverse to route all the domains in other servers ProxyPass /myApp1 http://192.168.22.1 ...

Is it enough to have hreflang only in sitemap or every single <a> tag must has hreflang attribute? [on hold]

Is it enough to have hreflang only in sitemap or every single tag must has hreflang attribute? Google Search Console error : Your site has no hreflang tags.

How to Add Email to Microsoft Azure Powershell Runbook

The following Powershell script is working fine in my Powershell Runbook. Can someone show me how to add email to the script to send an email when there is a false return e.g. if Dns returns a result ...

Equivalent for “TcpInitialRTT” and “TcpMaxConnectRetransmissions” for Windows Server 2008 R2

I read many articles saying how "TcpInitialRTT" and "TcpMaxConnectRetransmissions" controls the re-transmission of TCP packets in Windows 2003 Server. But I could not find what keys in registry ...

Why then I load files to SVN return error W205000?

Yesterday I reload full project from IDEA 2016.2 to SVN 3.5.7 Standart Edition. Loading return error Commit failed with error 0 files committed, 4 files failed to commit: second svn: warning: ...

Access a software (Qlikview) from a public IP/URL

I am new to servers and network so I am a bit lost. I can access a software (Qlikview) on http://localhost:80 A URL with an IP adress was created to let public users access the Qlikview interface. ...

Bypassing SSO property on oVirt 4.0

I have upgraded oVirt engine from 3.6 to 4.0, after the upgrade i could not access the webadmin portal, the welcome page displays this message: The client is not authorized to request an ...

Why does WebDeploy fail to sync to a remote server?

Why does WebDeploy fail to sync to a remote server? I have a scheduled task that uses the WDeploySnapin3.0 to sync Windows Server 2008R2 web servers in our main site and a remote site. The command ...

Automating eb create-environment with cloud-init directives

I want to use cloud-init with AWS ElasticBeanstalk, but the instructions specify that I should use the wizard to create a new environment & paste the cloud-init directives in at "step 6". Is ...

Affordable HIPAA Compliant Hosting [on hold]

I'm in the process of developing a web app which will be used by dental offices in the U.S. Since I will be storing protected health information (PHI), I need to make sure the web app is HIPAA ...

How to show lines where uniq more than 3

I have a file, where i should make "uniq" and show result. My file: 178.57.66.225 fxsciaqulmlk 178.57.66.225 fxsciaqulmlk 178.57.66.225 fxsciaqulmlk 178.57.66.225 faaaaaa11111 178.57.66.215 ...

How can I configure an EC2 server for development purpose in tomcat using eclipse [on hold]

Can I hold the development files of JAVA Spring MVC project in an EC2 Ubuntu instance, and remote develop using eclipse? Along with this normally we place the war file to run the application. But how ...

How to create androidx86 run on docker [on hold]

I am trying to create a docker with a custom iso from http://www.android-x86.org/download. I am trying to find a way to upload own iso from x86 bu I am unable to find a way to boot for iso file. I am ...

Public key pinning with RSA and ECDSA certificates

Public key pinning requires a public key and a backup key to be sent in the Public-Key-Pins HTTP header. How exactly is that supposed to work when you have a dual certificate setup with an RSA and ...

Random 502 errors with nginx and varnish

I have varnish, nginx and apache on same host. I get random 502 166 and 502 568 errors in nginx access log. In nginx config i setted fastcgi_buffers 8 16k; fastcgi_buffer_size 32k; ...

nginx load balancer IP-requester based

I've an nginx container, on host port 9200, that acts as load balancer for a DASH-based streaming service. This is nginx config file: upstream cdn-audio { server 192.168.99.103:9500; ...

Can I use 100% cpu on my cpanel account or is it for all shared hosting accounts? [on hold]

I bought a shared hosting account. They said it is unlimited package. My cpanel properties are in below picture. How much traffic this account can handle? What I can do and can not with below config? ...

Will (Effectively) Nested Xen SR be Stable?

Is an effectively nested Xen Server storage repository a problem for stability? Consider the graphic for the data path of the web server to a physical drive: (Starting on the right) In the graphic ...

OpenVPN - TLS Error: Handshake failed; SIGUSR1[soft,tls-error] received, process restarting — I tried everything

I am trying for weeks to get our OpenVPN working on our CentOS 7 server. I followed several guides on the internet how to setup OpenVPN on CentOS namely the tutorial on DIGITALOCEAN.COM. The thing is,...

502 bad getaway nginx and apache servers

Hello there can you please help me im trying to setup apache and nginx server on my ubuntu 16.04 server, but when i try to visit localhost/info.php fo example im getting 502 Bad Gateway nginx/1.9....

Why openvpn not always working in mac

I have set up openvpn server in Ubuntu machine . I am accessing it quite well in Windows. Buy when i access it through mac it connects but not last long, and further never gets proper connection

Enabling password expiry notification for RDP connections

We have an external user who connects to one of our servers only over Remote Desktop. The server has a local user account set up for him. The account security policy follows our normal conventions, ...

Nextcloud: Unstable SMB Connection

I am using Nextcloud on UBUNTU Server 16.04 LTS, and I tried to add an external smb storage (a Windows Network Drive). I activated the external storage app on Nextcloud, installed php-libsmbclient and ...

Installation of certmgr.exe on Windows Server 2012

I try to install certmgr.exe on Windows Server 2012 (without internet access). I read you need visual studio or Windows SDK. I downloaded the Windows Server 2012 Essentials SDK Installer from the ...

Windows Server 2012 RC2 shared storage with high performance [on hold]

For one of my projects I'm looking for a shared storage solution that offers as many of the following features, as possible: disks from multiple machines appear as one virtual disk (or folder) access ...

Configuring SMTP mail relay for multiple sites on same server

We are using Mailgun to send outgoing mail from our web server. This web server hosts 2 sites, website-a.com and website-b.com We needed to add both of these domains to mailgun (on their GUI), and in ...

Apache Directory Server (ApacheDS) master-master replication not working

I'm trying to configure ApacheDS with two nodes in master-master replication to achieve high availability. I've got my two servers up and running with a partition configured on each of them. I have ...

Disabling mail attachment scan for virus

I am trying to disable the attachment scan in my smarthost because i have a lot of people getting false positives, when they try to send attachments with *.exe or *.exe inside of a zip or rar file. In ...

nginx - 301 redirect /subfolder1/some-friendly-url-12345 to /subfolder2/some-friendly-url

I'm a newbie on nginx. I have some old url's like /aaaaa/some-friendly-url-12345 and I want to 301 redirect these url's to new one but without ID's, like /bbbbb/some-friendly-url. I also want to ...

Nginx - change the URI without rewrite

I've got an API configured with the following URL on example.com POST: /apiv1/actionA It works fine on example.com/apiv1/actionA The configuration is the following : server { listen 443; ...

Getssl connection error

I use getssl to install a Lets Encrypt SSL. Below the output of ./getssl -a Check all certificates hostname.com: Certificate on remote domain does not match, ignoring remote certificate Registering ...

AWS Horizontaly Scaling application

I have a NodeJS program that has 50 workers ready to process requests. The script maintains connections to the service that distributes requests. I want to autoscale this script so that when 45 ...

Azure how to connect Route-Based VPN with Policy-Based one

I've got Policy-Based VNET that is connected to Cisco ASA - there is no way to make it Route-Based. I need all of my app deployment (Azure Web App, Azure Cloud Services) to be connectable only from ...

Controlling Sccm using CLI

Is there a way to do the actions done from the SCCM console through a command line interface or powershell interface? I am talking mainly about the creation of task sequences and installation ...

<anonymous> process consuming 20Gbytes of memory on the heap

I have a memory leak in the [heap] top, has 20Gbytes of un-accounted used memory ps aux, is not showing this process, but smem -m output is Map PIDs ...
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