I am having problem to access a node js rest service deployed on an ubuntu virtual machine. I am able to access the VM using putty, however I am not able to ping the reserve ip from command line. I have put the logs in the rest service as when it gets the hit it prints the log, the logs are not getting printed. I want to know if there is any additional setting which needs to be done to open a port from the virtual machine or it is supposed to be open by default. If I need to open the port in order to access the service, where should I look for it.
Thanks & Regards
I want to know if there is any additional setting which needs to be
done to open a port from the virtual machine or it is supposed to be
open by default.
No, Azure will not open other ports by default, we should open ports manually.
I am not able to ping the reserve ip from command line
It is a classic VM, am I right? if so, we should make sure the rest service listening on which port, and add endpoints via Azure portal:
More information about create an endpoint please refer to this link.
If your VM in ARM module, we should add a inbound rules to NSG.
More information about NSG, please refer to this link.
Related
So I have created something small which is a image-rehost where I wish to use Python script where I have a URL such as https://i.imgur.com/VBPNX9p.jpg but with my rehost it would be
https://ip:port/abc123def456
so whenever I access that page it would give me the url that I posted here.
However the issue I am having is that I have no clue how to actually host the server that I made by node-js. Right now I just used the external IP with port of 5000. When I tried to send the image through my home ip by using the
https://external_ip:5000/abc123
the server doesn't recognize anything and nothing is being sent to the server which I in that case think I have setup something wrong.
I am using Google cloud server and I would wish to know how I can host my own server in the google cloud?
As you are having trouble adding a firewall rule, I'm going to suggest make sure port 5000 is open and not 8888.
To open the firewall rule for port 5000 in Google Cloud Platform follow these steps.
1) Navigate to VPC Network > Firewall rules > Create firewall rule.
2) In the 'Create a firewall rule' page, select these settings:
Name - choose a name for this firewall rule
Network - select the name of the network your instance belongs to, most probably
'default' unless you've configured a custom network.
Direction of traffic - 'Ingress'.
Action on match - 'Allow'.
Targets - 'All instances in the network'.
Source filter - 'IP ranges'.
Source IP ranges - '0.0.0.0/0'.
Second source filter - 'None'.
Specified protocols and ports - 'tcp:5000' or 'udp:5000' depending on whether the protocol you are using uses tcp or udp.
3) Hit 'Create'.
This will create a rule allowing traffic on port 5000 to all instances in your network from all IP address sources.
My advice would be to see if these settings work, and then once confirming this, lock down the settings by specifying a specific IP address or range of IP addresses in the 'Source IP ranges' text box, and adding a target tag to you instance and specifying 'Specified target tags' so the port is only open to the instance.
If this doesn't work, you may have a firewall rule turned on within the instance, which you would need to configure (or turn it off).
For more detailed information about setting firewall rules please see here.
For running Node.sj on GCE VM I will suggest you use the Bitnami Node.js package on GCP Marketplace which includes the latest version of Node.js, Apache, Python, and Redis. Using a pre-configured Node.js environment gets you up and running quickly because everything works out of the box. Manually configuring an environment can be a difficult and time-consuming hurdle to developing an application.
Also if you wish to do URL redirection you can use URL map feature provided with Google Cloud HTTP load balancer. This feature allows you to direct traffic to different instances based on the incoming URL. For example, you can send requests for http://www.example.com/audio to one backend service, which contains instances configured to deliver audio files, and requests for http://www.example.com/video to another backend service, which contains instances configured to deliver video files. You find steps to configure and more information here.
We have created self-hosted services using OWIN. They are working fine inside the server and we can request and retrieve information using the http://localhost. We use a different port for each service so that we can go and get certain information from http://localhost:8001, other from http://localhost:8015 and so on.
Now, we need to expose the results of one of those self-hosted services to access to it through internet. We'd like to provide a custom address such http://ourpublicinfo.mydomain.com:8001 or using the server ip such http://209.111.145.73:8001.
Is that possible?
How can we implement it?
Our server OS is Windows Server 2012 R2
OWIN Self-Hosted apps can run on a Windows Service, as a Console process and, with if desired, as part of a more robust Host like IIS.
Since you mention your app is running as a service you're probably missing all the GUI goodies IIS provides. In reality however, IIS works on top of http.sys, just as HttpListener does (which is probably what you're using to self-host your app) 1. You just need to do some manual set up yourself:
First of all, you need to make a URL reservation in order to publish on a nonstandard port.
Why would you do that? Quite simply because you're not running under localhost alone anymore on your very own local machine, where you probably are an admin and/or have special privileges/powers.
Since this is a server, and the user used for running the Service might not be an admin (most probably), then you need to give permission to that user to use that URL... and here is where URL reservations come into scene.
You pretty much have to options:
open up the URL to be used by any user:
netsh http add urlacl url=http://209.111.145.73:8001/ user="everyone" listen=yes
or open up the URL to be used by the user(s) running the service, e.g.: NETWORK SERVICE:
netsh http add urlacl url=http://209.111.145.73:8001/ user="NETWORK SERVICE" listen=yes
There is a way to make the reservation for several users too, using sddl, user groups, etc... but I'll not get into it (you can look that up).
Second of all, you need to open up a hall through your firewall (if you don't have one on this day and age, I pity you!)
There are plenty of tutorials on this. You can use a GUI, netsh.exe and what not.
Pretty much all you need to do is make sure you allow incoming connections through that port and that should do the trick.
To make sure the hall is open through and through you can use a tool like http://www.yougetsignal.com/tools/open-ports/ and insert 209.111.145.73 in the Remote Address and 8001 in the Port Number.
If for some reason it shows that the port is closed, even after creating an incoming rule in your firewall for it, then you probably have one or more firewalls in between your server and the outside world.
With those to elements in place you should be able to access your Self-Hosted Service from the outside.
As for accessing your service through an address like http://ourpublicinfo.mydomain.com:8001, you'll need to create a DNS entry somewhere, most likely on your Domain Registrar for mydomain.com, where you could create an A Record for your ourpublicinfo subdomain pointing to 209.111.145.73.
From this point on, you should be able to access your service through direct IP and Port or through the afore mentioned URL.
Best of luck!
Note:
If your service will be access from other domains, you might need to make sure you have CORS (Cross Origen Resourece Sharing) well defined and working on your service too ;)
I have a standalone, embedded Eureka server powered by Spring Boot 1.2.0.RELEASE and Spring Cloud 1.0.0.RC1. I see services properly registering themselves in the dashboard, which is great. The status links are using the host name of the box they are running on. Unfortunately, we are using virtual machines and they don't register themselves in DNS, which means that the links are unresolvable. I started looking through the code but was unable to find a way to force the links to use the host's ip address instead. Having a broken dashboard is not the end of the world but I am afraid that once we start using Ribbon or Feign to contact services, those URLs will also use the host name and be unresolvable. Maybe what I am really asking is there a way to force the clients to register with an ip address instead of a host name? Any help is appreciated.
set eureka.instance.preferIpAddress=true as documented here
I'm trying to deploy my camel app which on start is creating a cxfrs endpoint. The url is like this: http://localhost:9876 . When I try to hit this one on a rest client or anywhere within my machine it works. But when I try to access it using my phone or other external devices, I'm not able to connect.
Am I missing something?
TIA
Using localhost will mean it is only accessible to your local machine, using 0.0.0.0 instead should make it publicly accessible.
0.0.0.0 should bind all available network interface on your remote machine, but from your description, somehow it only bind to localhost|127.0.0.1 so only accessible from local machine, could you use
http://external.ip.address:9876/foo/FooService
instead to see if it helps?
Also, you can try to access other network service(for example start a tomcat on remote machine and see if you can access it from your local machine) from that remote machine to see if it works, this can determine if your DNS correct or if there's really no firewall between them.
I created a test JBOSS web service and there is only one test method in it. I access this using http://localhost:8070/MyWebService/MyRESTApplication
and it shows the result from the web service. I tried this in both Eclipse and Browser and it works.
But when i want to access this web service using IP address of my system then it shows ERROR message that Page cannot be displayed (in fact browser is not able to find this web service).
I want to access like this http://IPaddress:8070/MyWebService/MyRESTApplication
what should i do so that i can access it using my IP from some computer
You have to start JBoss using :
./run.sh -b [your_IPaddress]
On windows:
start run.bat -b 0.0.0.0
This will tell it to start and bind to all network interfaces. You can also replace 0.0.0.0 with your actual IP if you only want it to bind to that network interface.
I find it easier for debugging to have it come up on all network interfaces because this will work when you are running a virtual machine to debug something like Internet Explorer.
Open your server setting in Eclipse and set Host name as your IP address or 0.0.0.0