I have a remote Mysql database that I am connecting to through Node.js on Heroku. My MySql host (bluehost) wants me to input IP Adresses of all remote MySql connections.
Heroku doesn't have a dedicated IP for my app, so how can I connect to it? Bluehost mentions something about a Class C IP on its page, but I'm not sure Heroku has one...
Also, I believe I already have all of the heroku environment variables set up correctly:
(heroku config:add EXTERNAL_DATABASE_URL=...)
Thanks :D
Here's what blue host says about dynamic ip addresses:
Dynamic IP Addresses
Having a dynamic IP address means that the connecting IP address can
change periodically depending on the Internet Service Provider (ISP).
You must update the connecting IP in Remote MySQL every time it
changes.
from https://my.bluehost.com/cgi/help/89.
So at least each time you redeploy your application, you have a chance to get a different ip address. So this seems highly impractical. Why don't you use Heroku's MySQL offering?
You can use one of 'static ip' addons and proxy connection via that static ip - see this discussion
Related
I am using a software - (Ingress) by FingerTec which uses mysql database.
Some setups of this system are only using a single installation - consisting of a mysql server and a client locally on the same machine.
I have been having issues since I started to use the software when it is installed on a user's laptop/PC. The problem is that frequently when running the mysql server and client, a window pops up asking for the local IP address and port (127.0.0.1 and 3306 by default). To continue using the software, one needs to run IngressDB installer where you need to 'Update Connection' by giving the root user and pass for mysql and then 'Upgrade Database' to refresh the database for any new settings. After this step the software runs fine.
Yesterday I managed to simulate this issue by changing the static IP on my laptop while connected directly to one of their Access Controllers. I had to re-Run Ingress DBinstaller.
Now my question is this:
When using your machine(laptop/pc) it is normally getting IP add, def GW, Subnet etc from a dhcp server therefore there is no guarantee that you will always get the same IP leased unless there is a reservation to the machine's mac address.
As described earlier - when ever there is a change of IP address leased from DHCP, a window pops up showing the loopback address 127.0.0.1 and the mysql port 3306. So it never shows the local IP address (ex. 192.168.1.100). So I was thinking - why is the loopback IP not enough for mysql client/server as this stays the same forever.
Is is normal that software using mysql database server requires a static local IP on the machine hosting it? I am referring only to instances where both mysql server and client reside on the same machine.
I appreciate your thoughts about this and maybe any other way I can get around this apart from making an IP address reservation in the DHCP server. Setting a static IP address manually on the LAN adapter is no solution for me as this would limit the machine to connect only to a certain network and cannot be used at other places.
If the client is the same local machine as the server, the MYSQL server specifically does not need a static IP because it pretty much already has one: 'localhost' or '127.0.0.1'. If the client is not on the same machine as the server, the server would need a static IP.
If the machine is acting as a server for other content, yes, it would need a static IP. If you're doing this at home, chances are that your access point will let you configure it for a static IP.
Im trying to connect to a postgres database, from a springboot application deployed in minishift.
The postgres server is running on the same host that minishift is running on.
I've tried setting the postgres serve to listen on a specific IP address, and use this same address in the springboot jdbc connection url but I still get org.postgresql.util.PSQLException: Connection to 172.99.0.1:5432 refused
I've also tried using 10.0.2.2
Also tried, in /etc/postgresql/9.5/main/postgresql.conf, setting:
listen_addresses = '*'
How can I connect to a database external to minishift, running on same host?
Besides the answer referenced in my comment, which suggests to make your database listen on the IP address of the Docker bridge, you could make your pod use the network stack of your host. This way you could reach Postgres on the loopback. This works only if can guarantee that the pod will always run on the same host as the database.
The Kubernetes documentation discourages using hostNetwork. If you understand the consequences you can enable it as in this example.
If a pod inside kubernetes can't see the IP address from the host then I guess its an underlying firewall or networking issue. Try opening a shell inside the pod...
kubectl exec -it mypodname bash
Then trying to ping, telnet, curl, wget or whatever to see if you can see the IP address.
It sounds like something's wrong with the networking setup of your minishift. It might be worth raising an issue with minishift: https://github.com/minishift/minishift/issues/new
If you can find an IP address on the host which is accessible from a docker pod you can create a Kubernetes Service and then an Endpoint for the service with the IP address of the database on your host; then you can use the usual DNS discovery of kubernetes services (i.e. using the service name as the DNS name) which will then resolve to the IP address. Over time you could have multiple IP addresses for failover etc.
See: https://kubernetes.io/docs/user-guide/services/#without-selectors
Then you can use Services to talk to all your actual network endpoints with your application code completely decoupled on if the endpoints are implemented inside kubernetes, outside with load balancing baked in!
I created a mySQL database on one machine in my local network. Lets say, I install my application on a friends computer at his house. I have a computer set up as a server running the mySQL database at my house. If that computer is running, how can I make my friends computer send and receive data from the mySQL database on my network?
I am using JDBC and the J connector. I currently can connect to the database with JDBC, so I am currently good with that.
How can I make my friends computer send and receive data from the mySQL database on my network? Will I need a service like Google Cloud SQL or is there any other free way?I also want to make it so that I can email any friend with the program, and they can install it and the program connects to the MySQL server without Andy router extensional. Is a MySQL database even the way to go?
Edit: Basically, I made an MySQL database on a local computer and am able to save data to it from a JDBC program. I want the SQL database to be online so if I send the program to somebody else, they can open it and it accesses the online database. How should I go about making an online SQL database which has no limitations on what IP address accesses it?
Assuming you have a NAT router connecting your local network to the Internet, set up port forwarding on your router to forward port 3306 to the database machine on your network.
Then your friend would specify your router's public IP as the hostname when making the database connection.
In your MySQL configuration, you'll need to create a user username#your-friend's-IP, and grant it access to your your database tables.
A MySQL client (the thing running on your friend's local network) initiates a connection to a MySQL server by requesting a TCP connection on port 3306 (usually).
So your friend's computer has to be able to initiate a connection to your computer. Most home networks have routers between them and the internet service provided. Routers, unless specially configured, ignore attempts to connect from the public internet.
You need to configure your router to pass port 3306 connections through to your computer. Then you need to figure out the ip address by which your internet service provider addresses your router and your friend's router (usually the router user interface will tell you this). Then you need to set up a username / ip address / password triple on your MySQL database authorizing your friend to connect.
Finally, keep in mind that your internet service provider probably assigns both of you dynamic ip addresses; they might change.
I coded a program which connects to my web host's MySQL database. I have no problem with it.
But since I do not have a static IP and my IP changes every time I close my modem. I always add my new IP to Cpanel's Remote MySQL Host panel and then I am ready to go and connect to my database.
It is very difficult for me to add my modem ip to Remote MySQL Host manually every time it changes.
Is there a way if I can add my modem IP to Remote MySQL Host panel with Delphi coding?
Is it possible to do the following?:
I have a local Mac running OS X Lion with a MySQL Server installed which runs different processes regularly and stores data into a local DB.
On the other hand I have an Amazon EC2 instance.
What I would like to do is to use the Amazon instance to perform certain cronjobs (using its own resources) but connecting to the data that is on my localhost (my computer) and performing basic SQL actions like updating the data, inserting, etc.
I don't know if this helps, but I have a static IP. Is there any way I can "open" my IP so the Amazon instance can recognize my home computer as a valid MySQL server?
Thanks for your help, any tip in the right direction will be much appreciated.
If your EC2 instance is connecting to your local db you'll need a static IP locally. Well not need... but if you don't have it anytime you reset your router or loose power etc your ip will change. You can look into Dynamic DNS as well for your local instance.
Your ISP will not block your port on your local instance. This would be a firewall inside your network that is preventing you from connecting to mysql or a configuration with mysql itself. Users can only connect to mysql from certain IP addresses.
You would have to open up the mysql port on your firewall if you are using one, have the mysql client installed on your EC2 instance, and make sure that the user that had proper grantable permissions.
That said why not run cron locally on the mac?
If you can login to your server via SSH then there's no need to open any other port and no static IP is required. You can use SSH port forwarding instead. From your local machine run:
ssh -C -R 5555:127.0.0.1:3306 <your-server-host>
Now you should be able to connect to your Mac's database running on localhost:3306 from the remote server at localhost:5555.