I am trying to use the Horizon framework by the RethinkDB team but I am facing startup issues with Rethink. I try to start up the server with the command
rethinkdb --http-port 8082
all works fine but when I run my app.js where horizon is embedded, I obtain the error.
error: Connection to RethinkDB terminated: Error: The database help_internal does not exist.Run hz set-schema to initialize the database, then start the Horizon server.
I ran the command above and it creates a rethinkdb_data folder and whenever I restart the server, it gives me the same error.
You need to tell hz set-schema how to connect to the RethinkDb server you're running, otherwise it will create its own in your current working directory. You can pass it the same connection options you pass to hz serve.
I also got this error. It can be confusing because in dev mode of horizon it usually creates these databases for you.
In prod, however, you must create the databases yourself. To do this it is as simple as logging into RethinkDB's admin interface, click on the "Tables" navigation item then clicking the "+ Add Database" button. Create two databases called 'help' and 'help_internal' assuming that your horizon project_name name is 'help'.
Note that in addition to creating the databases I've described you may also need to create tables in these databases. This is where you should use get-schema on your dev server (to dump the current schema to disk) and set-schema on your prod server (to create the tables needed to support the schema).
For some npm tasks that accomplish the getting and setting of schema you can see here.
Related
I want to use dynamic databases on runtime without effecting config/database.php because of concurrent users.
I have a main db with a table that contains reference to several other dbs. Now at runtime I need to not only connect to those dbs but also may want to run migrations on them.
I am aware that this is possible by having a second connection entry in config.database.connections but I have a feeling that if two users hit the server at the same time, the physical config file changes may create a conflict.
I also read (and also experimented) that you can edit the second connection using below code at runtime:
\Config::set('database.connections.mysql2.database', 'somedynamicdb');
DB::purge('mysql2');
But I fear that if it persists changes for different users, then it may conflict for concurrent users. And if it does not persist changes, then it wont work for migrations.
I want to understand/know two things specifically:
What is the scope of this above code (i.e. Config::set() call)? Does it persist over different user calls to the server?
If I call migrations using Artisan::call('migrate') with a --database=connectionname clause, right after I change the db name in connectionname, will that use the dynamically set database or the physical config value?
UPDATE
Also worth noting that a call to Artisan::call('migrate') with a --database=connectionname, will make the new connection persist for the rest of your app call.
See here for details:
https://github.com/laravel/framework/issues/28253
Config::set will only apply for the request for which it was set, won't apply to any other requests, and will not persist beyond the request. If you're not processing a request (e.g. a CLI command) then it won't affect anything beyond the current PHP process.
As for Item #2, if you're invoking from the command line, you can just do DB_CONNECTION=connectionname php artisan migrate. If you need to invoke the artisan command from code, using Config::set is still the right way to go.
We use connection created on the fly here all time and works very well. We setup this on Middleware that we included after authentication and is only valid on the user current user request based on login information.
I would like to run H2 on my local host (Windows), and create a new database.
To do so, I have dowloaded the zip file from http://www.h2database.com/html/main.html, unzipped it, then run the bin/h2.bat script. I have not used the windows installer, as the machine I will be running later on does not grant me installation privileges.
The console was successfully opened on the 8082 port, but I could not create any database, failing with Database "C:/Users/PC/test" not found [90013-198] 90013/90013. I have tried many variations, to no avail.
The documentation states that a database should be created automatically if it does not exist, but indicates it cannot be done so from the H2 console (http://www.h2database.com/html/tutorial.html#creating_new_databases).
However, the documentation does not provide an alternate way to create a database, either by running the jar with additional parameters, or by another utility.
I feel pretty dazed right now. How do I properly create a new database in H2? I would like a normal database, persisted on disk, not an in-memory one.
I would suggest that this does not work in version 198
You could download an older version (I used 196) to create the databse and then switch back to 198 to open the database.
I have managed to run it by using the following command line:
java -cp h2-1.4.198.jar org.h2.tools.Server -tcp -pg -web
I must have missed something in the documentation, sorry about this.
Good Day.
I've been developing with meteorJS which uses mongodb. No problems there. I've been using the mongo shell to access the database on my dev machine (osx 10.11). This is my first project with mongo and when the shell would load, it would connect to db.test and I'd always show dbs and get the list of database, then use myApp.
Yesterday whenever I go into the shell and I type show dbs the only one shown is local 0.078GB. However my app is still working and pulling and pushing data to the database.
I've checked the dbpath in the mongod.conf and that seems ok. I'm not entirely sure about the exact order of things, but two things where different (I'm not sure if these happened prior to the show dbs not showing everything or after, and I'm not sure which came first):
when loading the mongo shell I was getting this error:
WARNING: soft rlimits too low. Number of files is 256, should be at least 1000"
I followed these directions which seemed to stop that error from appearing (https://github.com/basho/basho_docs/issues/1402 )
I use Meteor Toys and for the first time I update user.profile.companyName (which is a custom field within the standard profile from within the Meteor Toys widget.
Just odd that the app can still access the database and collections, but that the mongo shell doesn't show. I've update mongod via brew upgrade mongodb from 3.0.2 to 3.0.7 to no avail.
Any ideas?
If you want to use the regular mongo console you have to specify the port to be 3001 for meteor apps instead of the default 27017. Otherwise it's much simpler to just type meteor mongo and connect that way. Then you can type 'show collections' and it will show them all just like normal.
MongoDB do not show the database unless if there is minimum of one collection with a document in it.
Refer to this link
I need to install multiple iDempiere instances in one server. The customized packages are different in build and the db they are using. Is there any way to deploy both of it in one server and access like localhost:8080/client1, localhost:8080/client2 . Any help appreciated.
When I want to reference several application servers I need to copy the path of various installations
and change the database name and port of each application :
/opt/idempiere-server-production/ (on port 8080 for example) for production
And
/opt/idempiere-server-test/ (on port 8081 for example) for test
the way you said is not possible, because the idempiere server for webapp is known as
http://hostname:port/webui
Running multiple instances of idempiere on a single server is not too difficult.
Here is what you need to take care of:
Install the instances into different directories. The instances do not need to share any common files. So you are just fine making a full installation for each instance.
Make sure each instance uses its own data base. Use different names for the instance data bases.
Make sure the idempiere server instances use different tcp ports.
If you really should need to use a single port to access all of the instances you could use a http server like apache or ngnix to do define virtual hosts. Proxying or use of rewrite rules will then allow you to do the desired redirections. (I am using subdomains and apache mod_proxy to do the job)
There is another benefit to using subdomains for browser access: If all your server instances use the same host name the client browser will sometimes not be able to keep cookies from different instances apart, which can lead to a blocked session as discussed here in the idempiere google group.
Use different DB user names. The docs advise not to change the default user name Adempiere and this is ok for a single instance installation. Still if you use a single DB user for all of your instances you will run into trouble once you need to restore a database from a backup file. The RUN_DBRestore.sh will delete and recreate the DB user which is not possible when the user owns more than one DB.
You can run all of your instances as services in parallel. Before the installation of another instance rename the service script: sudo mv /etc/init.d/idempiere /etc/init.d/idempiere-theInstance. Of course you will need to do some book keeping work wth the service controller of your OS to ensure that the renamed services are started as desired.
The service controller talks to the iDempiere server via the OSGI console. For this to work without problems in a multi instance environment you need to assign a different telnet port number to each of the instances: in the editor of your choice open the file /etc/init.d/iDempiere. Find the line export TELNET_PORT=12612 and change the port number to something else.
Please Note:
OS specific descriptions in this guide are for Ubuntu 16/18 or Debian, if on another OS you need to do some research.
I have been using the described approach to host idempiere versions 5 and 6 for some time now and did not have any problems so far. Still make sure you do your own thorough tests if you want to go that route.
If you run into any problems (and maybe even manage to solve them) please report back to the community. (by giving your own answer to this question or by posting to the idempiere google group) Thanks!
You can have as many setups on your server as you like. When you run the setup to create your properties, simply chose other web ports for each installation. You also may need to slightly change the webservers configuration if they have some default ports.
I am able to create a successful connection to a remote mongodb server and database. When I try and insert the document into a collection I get the following error:
Unable to connect to server xxx.xxx.x.xx:28017: Attempted to read past the end of the stream..
after a little lag. I am not sure what the issue is if the connection seems fine.
server = New MongoClient("mongodb://admin:password#xxx.xxx.x.xx:28017/").GetServer
db = server.GetDatabase("TestDB")
mongoC = db("TestCpo")
Have you made sure that Mongo is up and running? Open up a command line, navigate to the location of your mongo installation then to the bin directory, type in "mongod". This will start up the mongo server, you need to have the mongo server up and running before you can do anything with it.
It's also useful to add the path to your environment variables so that it can be set up easier.
Another thing you could do is use
Process.Start(#"C:\[Directory of the mongo installation]\bin\mongod.exe");
(this is probably more useful if you want to start Mongo under test conditions)