Add maintenance announcement

Signed-off-by: kostyapenkov <[email protected]>
foundriesio · Dec 30, 2023 · bd8a3d6 · bd8a3d6
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diff --git a/index.md b/index.md
@@ -3,6 +3,7 @@ they are worked on. You can also get real-time updates of service outages
 on our [Slack channel](https://join.slack.com/t/foundriesio/shared_invite/enQtNTc5NDkxNTI5NTExLWQ1Yjc3NDA2MjI3NzA3YzkxYjEzNzlhZjQ0M2QxYTIzYmIzZjlmOThmZGU0NTk5MWEwZGIwMTU2YWE4N2I5NWQ).
 
 ### Planned/Ongoing Events:
+ * [2023-12-30 Compute cluster upgrade](maintenance/2023-12-30-compute-upgrade.md)
 
 ### Past Events:
  * [2023-10-29 API maintenance](maintenance/2023-10-29-api.md)

diff --git a/maintenance/2023-12-30-compute-upgrade.md b/maintenance/2023-12-30-compute-upgrade.md
@@ -0,0 +1,8 @@
+## Compute cluster upgrade
+
+On Sat, 2023-12-30 and Sun, 2023-12-31, compute cluster will be upgraded.
+
+Our infrastructure team will upgrade control-plane components and some [foundries.io](https://foundries.io) services.  
+During the maintenance, OTA and CI systems might have service interruption (expected downtime - less than 5 minutes).
+Docker registry [hub.foundries.io](https://hub.foundries.io) might be unavailable up to 10 minutes.  
+Performance of some [foundries.io](https://foundries.io) services might be impacted during the maintenance.