Intermittent Errors connecting to MySQL server - mysql

My app seems to run fine sometimes, and other times it says it cannot connect to any of the MySQL servers.
I started out with the MySQL server being hosted in azure as well, but I moved it external due to connectivity issues.
I finally moved the ASP.Net app to a real VM instead of being hosted as a website. I tested a manual connection to the MySQL server when it became unresponsive and it failed as well. I then did a trace route to the server and it failed as well.
Is this a known issue? Is this a duplicate of: Classic ASP site on Azure web site, remote mysql database

Related

could not access azure mysql

I have a MySQL server database running on Azure. It has already running to store data from my ASPX web apps hosted on Azure also. I have plan to migrate the apps to Java JSF or .net core.
I developed using Tomcat server (in my local pc) and try to connect directly to mySql in Azure. But I always get Communications link failure error.
Is it not allow to connect directly from my local Tomcat server to database in Azure, or something else?
Thank you in advance for the answer.
Yes you can connect from your local tomcat to your azure mysql if you have provided the correct connection string.
Also add your ip in the firewall rules of the sql resource.

ssh connection spits out sql client connection logging, how do i stop this?

I'm Running Linux Ubuntu 16.04 LTS on google cloud compute engine. this server hosts a website which in turn uses the sql client to connect to a sql instance also running on google cloud platform. I connect to the webserver using ssh which all is fine until I connect to the sql instance.
once this connection is made and the website also can connect to the database my screen is flooded with messages like:
2017/07/12 16:56:30 New connection for
"snappy-gantry-xxxxxx:europe-west1:xxxxx" 2017/07/12 16:56:30 Client
closed local connection on
/cloudsql/snappy-gantry-xxxxxx:europe-west1:xxxxx
This makes it undo-able for me to continue working on this machine. How can i disable this so i can continue my work?
As it is the server is still in development. when it goes to production is don't mind it but even then i don't need those messages.
The problem doesnt occur anymore. What i first did was setting up the connection with sql under my own user account which then spit out the logging. I now started it under the service account and when i log in under my own name i don't see the logging anymore.

Node.js online server upload with mysql support

I currently have developed a server in node.js (and respective client) which works without hassle. It uses socket.io and communicates with a mysql database to retrieve some info for certain messages.
The problem is that I tried uploading it online using Nodejitsu. The communication works without problem but when it's the the server's turn to send a query for the database nothing happens, the client just sits there.
Is there and issue with nodejitsu? Seeing that all other modules work except the communication with the a mysql database I had setup.
Note that when running the server in my computer and communicating via localhost everything works flawlessly.

Web server and MySQL server on different machines, causing latency on websites

I am currently running a virtualized environment for my web and db server. When I access the web server or the MySQL server individually, they are both fast. I also have websites running on the web server that do not require the db server and those all load quickly. However, when I access my hosted website that requires the web server to call from the db server, there is about a 5-7 second latency for every page load. This has been confirmed with both a very simple site and with a Word Press setup as well. Here is the config:
Web server - CentOS 6.5, Apache 2.2.15
DB server - CentOS 6.5, MySQL 5.1.73
My question is, are the servers continuously authenticating with one another (and thus causing latency) on every single db call? If that is the case, does anyone know how to permanently authenticate between the two?
I might be way off on this assumption and authentication could have nothing to do with it. I am completely open to any and all ideas at this point. Thank you very much.
V/R,
Tony
To me it seems to be a network issue.
and obviously the db-server will need authentication every time there is a hit.

Host MVC Application in AppHarbour

I've hosted MVC application having MySql server instance in AppHarbour as backend but build is getting failed. We would like to connect MySql instance from local application but it can't access tables and schema while is opening and connecting to instance successfully.
You can't connect AppHarbor to a local db. If you have a hosted MySql instance though, you can connect it to that.
AppHarbor shows you build errors. You can read the build output and find out why it is failing (if it is the build failing or unit tests failing).
Either way, whether or not MySql is hosted or local, that shouldn't affect whether or not the project builds in AppHarbor.