Upgrade RDS Databases from MySQL 5.6 to 5.7
This article describes the upgrade path and expectations for IDAs moving from MySQL 5.6 to 5.7
1: This work has been completed as of 2/2, however this page has been left for contextual purposes.
2: This page is public, but some of the details here pertain only to edX deployments, and many of the links are to protected pages.
External Links
Other Upgrades https://openedx.atlassian.net/wiki/pages/createpage.action?spaceKey=SRE&title=Upgrade%20Activity
Engineering Team Instructions
Coordinate with product to determine an upgrade timeframe for devstack.
Update the “Planned 5.7 DevStack Upgrade” column below.
Please link any created tickets to https://openedx.atlassian.net/browse/OPS-4652
Identify dependency changes
If your app uses any python database libraries, please update these.
Upgrading Devstack
Find your app’s docker-compose block(s) in
Update your apps container to point at
mysql57instead ofmysqland update any related make commands.
(e.g. https://github.com/edx/devstack/blob/a76042b19aeb8fc8b02d93d3db4be783a54a0be1/docker-compose-marketing-site.yml#L15 )If possible run e2e tests to see if the change causes any issues.
Merge your PR and notify engineering if any manual steps are needed to recreate data locally.
(e.g.make dev.dbcopy57.<service>, see 10/6 “Discovery switching to mysql 5.7” email thread from Mike for examples)If manual steps are needed and your service is an Open edX service, please also post to Discourse (e.g. https://discuss.openedx.org/t/discovery-switching-to-mysql-5-7/3360) and add make sure the Koa release planning notes reflect your changes.
If you learned any lessons that would be valuable to other teams, please describe or link to them here.
Upgrading Travis or CircleCI
Make sure that whatever Travis or CircleCI tests you have which use MySQL are using a 5.7 container. (e.g. https://github.com/edx/xqueue/pull/783/files)
Upgrading Sandboxes
SRE will be upgrading Sandboxes before we upgrade stage with this PR: https://github.com/edx/configuration/pull/5695/files
However you may need to coordinate the timing of persistent sandbox deployments.
(e.g. partner registrar sandboxes should get rebuilt after prod gets upgraded, int sandboxes get upgraded ahead of time)
Be on the lookout for any performance impacts once SRE notifies you that stage and prod are being upgraded.
Note: RDS Aurora MySQL Databases will likely require downtime, but RDS MySQL databases can be upgraded without downtime.
If there are downtime constraints for prod please let the SRE team know, we will be estimating the downtime and choosing which upgrade path makes the most sense and will be attempting to
Significant Changes since 5.6
As of right now we only know of improvements, however, some libraries like django-mysql <1.0.6 do not support MySQL 5.7 and may need to be updated (edx-platform is on 3.0.0). We also may use some features of MySQL 5.6 that are no longer available in django-mysql or mysqlclient.
Site Reliability Team Instructions
The SRE Team is tracking each stage, prod and edge database upgrade under this Jira epic:
As each of our services have different requirements (owners, data pipelines), each database upgrade may have specific steps required.
Each of the services in the diagram below (except Forums, Prospectus & Marketing), has a MySQL database that will be upgraded to Aurora 5.7, in addition to the service, our data pipelines also connect to these databases so special care should be taken to ensure those pipelines and the downstream reports are not impacted by the upgrades.
At least the LMS, Ecommerce, Discovery, License Manager, Enterprise Catalog, Demographics and Credentials services also have DBT generated Snowflake views described here, please be sure to sync with DE about requirements before doing each cutover.
At least LMS and Ecommerce have Jenkins EMR and/or Swoop jobs, these jobs should be checked carefully before and after each respective cutover.
The current proposed order for updating our databases is here (please keep this in sync with ):
Notes (SRE) - Done on 10/23 (not on Aurora)
Discovery & Ecommerce (Engagement) (not on Aurora)
Discovery - Done on 10/29
Ecommerce - Done on 11/17 @ 10pm
Credentials and Demographics (Aperture)
Credentials - Done on 11/17 @ 3pm
Demographics - Done on 12/7 @ 10am
Registrar and Portal Designer (Masters)
Registrar Target - Done on 12/2 @ 10am
Designer Target - Done 12/9 @ 10am
Analytics API and Insights (DE)
Prod Analytics API and Analytics Data - Done 12/17 @ 10am-12pm ET
Edge Analytics - Done for 12/18 @ 10am-12:11pm
XQueue (T&L)
Move Stage xqueue schema from edxapp db to shared db Done
Prod Xqueue Target -Done on 1/5 @ 10am
License Manager, Enterprise Catalog, Blockstore, Video Encode Manager (Enterprise, T&L, Incident Management)
Shared Cluster - Done
Platform (Arch + TNL):
Stage edxapp - Done on 1/25
Edge edxapp - Done on 1/27
Prod csmhe & edxapp - Done on 2/2
Communications Plan
Note: These steps may be followed twice if we do a segmented upgrade to support TLS 1.2 first on 5.6.48 before going to 5.7 (e.g for notes)
Stage:
We will be sending out a message to #dev and @'ing @sre-team + the technical owners listed below for each stage database upgrade, if you would like to be on the cc list for a specific service please add your name to the column.
At the service owner or SRE team members request we will cross post announcements to #warroom or other channels. (note, we may also pause pipelines)
Once maintenance is complete & any pipelines are unpaused we will post in the #dev announcement thread with “also send to channel” checked to let engineers know that their services should be back up should notify us if they see anything unusual.
At the service owners request we will communicate to a specified engineer or channel to ask them to manually run smoke tests or trigger e2e tests.
Prod & Edge:
We will be coordinating any required maintenance windows with the business and technical owner for each service which will be documented in the table below and the corresponding tickets.
At the service owners request we can also include external contractors who are impacted in this coordination (e.g. OpenCraft/LabXchange).
At the service owners request we will post a status.edx.org maintenance window, which will usually be either 1pm-2pm or 1am-2am depending on which engineers need to be available, on status page, (e.g. https://status.edx.org/incidents/v1n8lpl6sz13 - we will not be posting to status page for edge notes)
We will post an announcement in #warroom and @'ing @sre-team + @status + the service owners at the beginning of the maintenance window.
At the service owners request we will cross post #warroom announcements to other channels (e.g. #partner-support)
Once maintenance is complete we will perform an appropriate smoke test, update the status page.
We will update the announcement thread with “also send to channel” checked to let engineers know that their services should be back up should notify us if they see anything unusual.
Read Replicas:
Read Replicas (e.g. for Platform, Ecommerce & Discovery) will be handled on a case by case basis.
Timeline
Service | Business and Technical Owners (see list here) | Current MySQL Versions (best effort) | In Open edX? | 5.7 DevStack Upgrade Due November 9th if in Open edX, December 15th if not. | 5.7 Travis Upgrade Due November 9th, December 15th if not. | 5.7 Sandbox Upgrade | Planned 5.7 Stage Upgrade Due December 15 | Planned 5.7 Prod Upgrade (+ Any Read Replicas) Due Jan 1 | Planned 5.7 Edge Upgrade | Maintenance Mode / Smoke Test Docs |
|---|---|---|---|---|---|---|---|---|---|---|
Platform (LMS + CMS) + csmhe
| Arch - cc @Jeremy Bowman (Deactivated) | Stage: 5.7 | Yes | - @Muhammad Arif (Deactivated) Upgraded on 10/29 | Tests run on Jenkins instead of Travis
Upgraded on 10/29 | SRE will create a test sandbox once is done.
| (dedicated aurora) Upgraded on 01/26 @ 1 AM
CNAME: stage-edx-edxapp.rds.edx.org | Coordinate with Jeremy/Nimisha/Sarina/Stu/Feanil Note: There are two databases. (dedicated aurora) Completed on 2/2 | Coordinate with Jeremy/Nimisha/Sarina/Stu/Feanil Completed on 1/27 | Maintenance Mode: See Runbook. Smoke Test: cc @Sarina Canelake (Do Not Use) (Deactivated) |
Engagement - | Stage: 5.7 | Yes |
| , now ecom team helping via |
| (dedicated aurora) | (dedicated aurora) | Not applicable (ecommerce not in Edge) | Maintenance Mode: 1: Disable ASG in Asgard | |
Aperture - | Stage: 5.7 | Yes | Oct 6, 2020 | Oct 8, 2020
| N/A | (shared aurora) | (dedicated aurora) | N/A | Maintenance Mode: Disable ASG in Asgard | |
Aperture - | Stage: 5.7 | No | Done as part of https://github.com/edx/demographics/pull/80/files | N/A | @Adam Blackwell (Deactivated) ask @Matt Tuchfarber (Deactivated) if demographics runs in sandbox. | (dedicated aurora) | (dedicated aurora) | N/A | Maintenance Mode: Disable in ArgoCD Smoke Test: @Adam Blackwell (Deactivated) will reach out to @Matt Tuchfarber (Deactivated) | |
SRE - | Stage: 5.7 | Yes | @Adam Blackwell (Deactivated) |
| (shared aurora) | (dedicated mysql) | (dedicated mysql) | Maintenance Mode: We can’t currently put just notes in maintenance, but the LMS fails gracefully for users and we can use Cloudflare. | ||
T&L - @Jeremy Bowman (Deactivated) | Stage: 5.7 | Yes | Upgraded as of Oct 6, 2020 ) UPGRADED 11/19 |
UPGRADED 11/19 |
| (edxapp aurora) | (dedicated mysql)
Will be done by SRE team, need coordination with @Feanil Patel | N/A | Check with @Feanil Patel Maintenance Mode: Disable ASG in Asgard Smoke Test: | |
Registrar & Workers | Programs - | Stage: 5.7 | No | Upgraded as of Sep 24, 2020
| No Travis Docker Tests |
| (shared aurora) | (dedicated mysql) Endpoint for Stitch: | N/A | Maintenance Mode: Disable in Asgard Smoke Test: https://openedx.atlassian.net/wiki/x/bYCCeQ |
Enterprise - | Stage: 5.7 | Yes | Upgraded as of Sep 28, 2020
| No Travis Docker Tests |
| (shared aurora) | (shared aurora) | N/A | Maintenance Mode: Disable in Asgard | |
Enterprise - | Stage: 5.7 | Yes, for now | Upgraded as of Sep 28, 2020
| No Travis or CircleCI |
| (shared aurora) | (shared aurora) | N/A | Maintenance Mode: Disable in Asgard Smoke Test: | |
Engage - | Stage: 5.7 | Yes | Upgraded as of Oct 6, 2020
| Upgraded Travis as of Oct 6, 2020 |
| (shared aurora) | (dedicated mysql) | N/A |
| |
Masters - | Stage: 5.7 | No | Upgraded local compose file as of Sep 18, 2020 | No Travis or CircleCI |
| (shared aurora) | (dedicated aurora) | N/A | Maintenance Mode: Disable in Asgard Smoke Tests: | |
T&L - | Stage: 5.7 | Yes |
Done 11/6 | Done 11/6
| N/A | (shared cluster) | (shared cluster) | N/A |
| |
Analytics Pipeline | Data Engineering - T:@Brian Beggs | N/A | Yes |
|
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| N/A |
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Data Engineering - T:@Brian Beggs | Stage: 5.7 | Yes | N/A (According to @Brian Beggs , insights and analytics-api do not have a devstack.) | Travis doesn’t use MySQL | Doesn’t have sandboxes. | (shared aurora) No action items | (analytics aurora) | (analytics mysql)
| Maintenance Mode: @Brian Beggs will check with his team + Asgard | |
Insights and/or Analytics Dashboard | Data Engineering - T:@Brian Beggs | Stage: 5.7 | Yes | N/A (According to @Brian Beggs , insights and analytics-api do not have a devstack.) | Travis doesn’t use MySQL | Doesn’t have sandboxes. | (shared aurora) No action items | (analytics aurora) | (analytics mysql) | Maintenance Mode: @Brian Beggs will check with his team + Asgard Smoke Test: Download button in Insights |
ensure retirement | @Simon Chen , @Julie Davis (Deactivated) - repo ownership @Jeremy Bowman (Deactivated) - for deprecation | N/A | No | Done 11/13 - closed in favor of | No Travis Docker or CircleCI Tests | N/A |
|
| N/A |
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Video Encode Manager | @Kashif Chaudhry (Unlicensed) , @Dawoud Sheraz | Stage: 5.7 | Yes | Not in DevStack: | N/A | N/A | (shared cluster) | (shared cluster) Completed | N/A | @Kashif Chaudhry (Unlicensed) Are you aware of how SRE can smoketest this service after we complete this database upgrade?
|
Licence Manager |
| Stage: 5.7 | Yes |
|
| N/A | (shared cluster) | (shared cluster) Completed | N/A |
|
ensure retirement | Website: | N/A | No |
Will be retired before by then - |
Will be retired before then - | N/A | Needs to be removed from shared | Needs to be removed from shared | N/A | N/A |
Enterprise Reporting | Markhors: | Stage: 5.7 | No | N/A | N/A | N/A | N/A | N/A |
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- needs to be done by 11/9
Important Dates
MySQL Database 5.6 becomes end of life in Feb, 2021
Open edX Juniper will ship with support for 5.6, but Open edX Koa will ship with support for 5.7
Application Owners should plan to upgrade to 5.7 as part of the Koa release (December 9. Upgrades should be in place by Nov 9.)
Some apps (like edxapp, ecommerce, discovery may define MySQL URLs outside of their compose files)
Out of Scope
The following services do not need to be upgraded within this project, or upgrade is not applicable to them.
- it is currently an IDA, but the goal is to turn it into a plugin for edx-platform, so we don't believe any work is needed.