Why is 3.0.* ok but 3.2 version has to specifically be 3.2.6? Is 3.2.1 ok?
Any version is fine when doing a fresh install with parse-server but from parse.com you will not be able to move to 3.2. Seems that migration tool wont allow it.
I moved to 3.0 and from there did backup/restore to 3.2.
However i would always strongly suggest that one in general runs the latest version if you can.
I do know that all test on mongodb 3.2.6 are passing including geo queries.
Related
I need to update MongoDB from version 2.6 to 4.2.6.
Could you please suggest effective way to upgrade the version without losing data or any kind of trouble.
Thank you in advance.
Each version has its associated release notes.
Upgrades must be done one version at a time (2.6 -> 3.0 -> 3.2 etc.).
Read the 3.0 release notes, identify which of them apply to your application, follow them, install 3.0 binaries, test your application, bump FCV if applicable (does not apply to 3.0 but will apply to later versions), test your application again, repeat the process for 3.2, etc.
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 would like to know whether it is possible to upload MongoDB from 2.2 to 3.2 without any intermediary upgrades. If it is possible please share a resource that can follow. I would like to know what things to looks out for when up grading
No you can't.
From the documentation,
Upgrade Requirements
To upgrade an existing MongoDB deployment to 3.2, you must be running a 3.0-series release.
To upgrade from a 2.6-series release, you must upgrade to the latest 3.0-series release before upgrading to 3.2. For the procedure to upgrade from the 2.6-series to a 3.0-series release, see Upgrade MongoDB to 3.0.
On starting meteor 1.4.1, I get this message:
Your development database is using mmapv1, the old, pre-MongoDB 3.0 database
engine. You should consider upgrading to Wired Tiger, the new engine. The
easiest way to do so in development is to run meteor reset. If you'd like to
migrate your database, please consult
https://docs.mongodb.org/v3.0/release-notes/3.0-upgrade/
I though Meteor looks after the mongodb side of things under the hood and I would need to fix it if it is not broken, Will it be a problem if left as is or should be better to upgrade, and how to go about it? Thanks
You can check it in here.
https://guide.meteor.com/1.4-migration.html#update-to-mongo-3_2
MDG recommended you to update. minimum version supported by metetor1.4 is Mongodb Version 2.6.
I was going through upgrade process of mysql server. It is mentioned that to upgrade from 4.1 to 5.5 we need to upgrade step by step like first to 5.0,5.1 ...5.4 and then 5.5.
I have some questions :
What if we directly upgrade from 4.1 to 5.5. What might get effected? functionality or problem related to upgrading
Chances to loose data ? Even though I'll take backup using 'mysqldump --all-data-base' option.
Lets say, I have two database. I'll take only two database backup. I'll install latest version of mysql 5.7 and load two database back. What are chances to loose data or get corrupted ?
I'm curious to know this. If anybody tried? Because I need to do upgrade in live server.
Is there any step by step document which tells exact steps to upgrade from 4.1 to 5.5 in linux server
Major new features added to MySQL 5.0 and 5.1 that may not work/won't work in 4.x can be located here:
MySQL 5.0 - http://dev.mysql.com/doc/refman/5.0/en/mysql-nutshell.html
MySQL 5.1 - http://dev.mysql.com/doc/refman/5.1/en/mysql-nutshell.html