I have the database files, /data/db/ (these are from the version 3.6.3 MongoDB)
But I looked the documentation of MongoDB up and I saw and it isn't possible anymore to install the MongoDB 3.6.3.
So how am I able to update the old database files to use them with the version MongoDB 4.4
Thank you very much for your help!
You must do it one by one:
Upgrade a Standalone to 4.0
The following steps outline the procedure to upgrade a standalone mongod from version 3.6 to 4.0.
Upgrade a Standalone to 4.2
he following steps outline the procedure to upgrade a standalone mongod from version 4.0 to 4.2
Upgrade a Standalone to 4.4
The following steps outline the procedure to upgrade a standalone mongod from version 4.2 to 4.4.
Related
I trying to migrate an old application, using MongoDB 2.4 to a host, running MongoDB 3.0 in Docker container. For test purpose I am copying the data via ssh tunnel from the older to the newer version.
As I read about the updating process of MongoDB, first I should use Mongo 2.6 and then 3.0. However my test with avoiding the step with version 2.6 was successful and the database works fine. Could somebody explain me is that really possible or I have misunderstood something? It's really strange for me.
Upgrading from 2.4 to 2.6, prior to upgrading to 3.0 is a requirement according to the documentation:
To upgrade an existing MongoDB deployment to 3.0, you must be running
2.6. If you’re running a version of MongoDB before 2.6, you must upgrade to 2.6 before upgrading to 3.0. See Upgrade to 2.6 for the
procedure to upgrade from 2.4 to 2.6. Once upgraded to MongoDB 2.6,
you cannot downgrade to any version earlier than MongoDB 2.4.
Having said that, if you have run the corresponding test cases for your application, with a good test coverage, the indexes are working properly, and nothing has been broken I can not see a reason to worry about but ideally they suggest to migrate to 2.6 and then make the move to 3.0 to avoid data corruption.
I have Ubuntu 16.04 machine with MongoDB 2.6 install.
Now I want to upgrade MongoDB to latest version, i.e., 3.4
What is the best way to Upgrade?
From MongoDB website, I found that, I must have to follow step by step upgrade. e.g, 2.6 to 3.0, then 3.0 to 3.2, then 3.2 to 3.4 Is this correct?
What is the best and safe way to upgrade MongoDB, so I can complete it with less down time?
I recently upgrade the version of mongodb. My previous version was 3.2
When I write on console;
mongod --version
db version v3.4.2
But I cannot use operators that comes with new version of mongodb (3.4) in MongoChef.
For example this one; https://docs.mongodb.com/manual/reference/operator/aggregation/indexOfBytes/
MongoChef doesn't complete or when I try to execute the string it throws an erroras;
the selection: invalid and cannot be executed.
Should I upgrade MongoChef as well? Why I cannot use the operators in version 3.4 while my mongodb version is it.
Check your MongoChef Version as only MongoChef vertion 4.5 + are compatible with 3.4 according to the release notes.
With that, I would recommend upgrading to the latest MongoChef release 5.1 - https://studio3t.com/download/
MongoChef is now called Studio 3T now.
It is possible to update mongodb (Currently in version 2.0.6 and I need > 2.2) and keep databases ?
Mongodb running on Debian 7
MongoDB 2.0 data files are compatible with 2.2-series binaries without
any special migration process. However, always perform the upgrade
process for replica sets and sharded clusters using the procedures
that follow.
As said on the mongodb release notes. Also when your making an upgrade, since your current version is 2.0.6 you need to upgrade to 2.2 first.
If you want to go up to the latest version you have to keep upgrading version one by one as said on the release notes here.
Upgrading a Standalone version
Download binaries of the latest release in the 2.2 series from the MongoDB Download Page.
Shutdown your mongod instance. Replace the existing binary with the 2.2 mongod binary and restart MongoDB.
I have a mongodb standalone instance in my ubuntu. According to official docs I replace mongod binary then I restarted mongodb using sudo service mongodb restart command, and restarted mongod binary also. Then when I check version using mongo --version. It's still 2.4.10. But when I check mongod version it's 2.6.1. Is it okay? I installed mongodb in my local machine using this guide. If it correct then I will upgrade my production server.
It sounds like you have upgraded your mongod server to 2.6.1 but still have an older version of the mongo shell in your path.
Technically that isn't a major issue for most usage as the older 2.4 shell can still connect and run common commands.
However, there are 2.6-specific shell helpers & features you'll be missing out on such as Bulk() operations and user management commands with user-defined roles.
If you have an open mongo shell, you can check the versions of both the mongo client and the mongod server you are connected to.
Ideally the major versions should match, eg:
> version() // Version of the `mongo` shell
2.6.1
> db.version() // Version of the `mongod` server this shell has connected to
2.6.1
The upgrade guide you have followed is assuming you are not using the packaged versions of MongoDB -- the guidance here could definitely be improved.
A better (and typical) approach for Ubuntu is to install MongoDB using the standard packages: Install MongoDB on Ubuntu. This would allow you to get software updates via the normal apt-get update process.
Yes. It's okay. The 2.6.1 version is a small update with bugfixes after version 2.6. But it's still the same major version.