Update 2026.3 documentation to reflect latest patch (#269)

Author: cortex-lp

content/en/docs/2025.9/Guides/upgrade-guides/upgrade-observability/4.1.0-to-4.2.1/_index.md

@@ -0,0 +1,10 @@
+---
+title: "4.1.0 to 4.2.1"
+linkTitle: "4.1.0 to 4.2.1"
+description: "Instructions to upgrade your observability platform for {{% ctx %}} from 4.1.0 to 4.2.1."
+weight: 970
+---
+
+{{% alert title="Note" %}}
+There is no upgrade to 4.2.1 required for cloud-hosted observability platforms.
+{{% / alert %}}

…lity/4.1.0-to-4.2.0/on-premise/_index.md …lity/4.1.0-to-4.2.1/on-premise/_index.mdcontent/en/docs/2026.3/Guides/upgrade-guides/upgrade-observability/4.1.0-to-4.2.0/on-premise/_index.md renamed to content/en/docs/2025.9/Guides/upgrade-guides/upgrade-observability/4.1.0-to-4.2.1/on-premise/_index.md content/en/docs/2026.3/Guides/upgrade-guides/upgrade-observability/4.1.0-to-4.2.0/on-premise/_index.md renamed to content/en/docs/2025.9/Guides/upgrade-guides/upgrade-observability/4.1.0-to-4.2.1/on-premise/_index.md

@@ -15,7 +15,7 @@ On the server that Grafana Loki is installed on:
 1. Open a File Explorer and navigate to the folder that Grafana Loki is running from, e.g. `C:\ProgramData\Cortex\Observability\Loki`.
 1. Open the `loki-local-config.yaml` configuration file in a text editor.
 1. Search the file for `compactor:`.
-1. If the search returns no results, proceed with the upgrade process, if results are returned then Observability has already been updated to 4.2.0 automatically as part of the [3.0.0 to 4.0.0][] upgrade and no further steps are required.
+1. If the search returns no results, proceed with the upgrade process, if results are returned then Observability has already been updated to 4.2.1 automatically as part of the [3.0.0 to 4.0.0][] upgrade and no further steps are required.
 
 ## Backup Old Files
 
@@ -28,4 +28,4 @@ On the server that Grafana Loki is installed on:
 1. [Upgrade Grafana Loki][]
 
 [3.0.0 to 4.0.0]: {{< url path="Cortex.Guides.UpgradeGuides.UpgradeObservability.3_0_0to4_0_0.OnPremise.Grafana.MainDoc" >}}
-[Upgrade Grafana Loki]: {{< url path="Cortex.Guides.UpgradeGuides.UpgradeObservability.4_1_0to4_2_0.OnPremise.Grafana.UpgradeLoki" >}}
+[Upgrade Grafana Loki]: {{< url path="Cortex.Guides.UpgradeGuides.UpgradeObservability.4_1_0to4_2_1.OnPremise.Grafana.UpgradeLoki" >}}

….0-to-4.2.0/on-premise/grafana/_index.md ….0-to-4.2.1/on-premise/grafana/_index.mdcontent/en/docs/2026.3/Guides/upgrade-guides/upgrade-observability/4.1.0-to-4.2.0/on-premise/grafana/_index.md renamed to content/en/docs/2025.9/Guides/upgrade-guides/upgrade-observability/4.1.0-to-4.2.1/on-premise/grafana/_index.md content/en/docs/2026.3/Guides/upgrade-guides/upgrade-observability/4.1.0-to-4.2.0/on-premise/grafana/_index.md renamed to content/en/docs/2025.9/Guides/upgrade-guides/upgrade-observability/4.1.0-to-4.2.1/on-premise/grafana/_index.md

@@ -56,6 +56,6 @@ Loki may take some time to remove logs older than the retention period, therefor
     {{% / alert %}}
 
 [HA Installation script configuration]: {{< url path="Cortex.GettingStarted.OnPremise.InstallInnovationOnly.MultipleServerWithHA.ConfigureInstallationScriptNew" >}}
-[Upgrade Loki]: {{< url path="Cortex.Guides.UpgradeGuides.UpgradeObservability.4_1_0to4_2_0.OnPremise.Grafana.UpgradeLoki" >}}
+[Upgrade Loki]: {{< url path="Cortex.Guides.UpgradeGuides.UpgradeObservability.4_1_0to4_2_1.OnPremise.Grafana.UpgradeLoki" >}}
 [Non-HA Installation script configuration]: {{< url path="Cortex.GettingStarted.OnPremise.InstallInnovationOnly.SingleServerWithoutHA.ConfigureInstallationScriptNew" >}}
 [Postman]: {{< url path="Postman.Downloads.MainDoc" >}}

….2.0/on-premise/grafana/prerequisites.md ….2.1/on-premise/grafana/prerequisites.mdcontent/en/docs/2026.3/Guides/upgrade-guides/upgrade-observability/4.1.0-to-4.2.0/on-premise/grafana/prerequisites.md renamed to content/en/docs/2025.9/Guides/upgrade-guides/upgrade-observability/4.1.0-to-4.2.1/on-premise/grafana/prerequisites.md content/en/docs/2026.3/Guides/upgrade-guides/upgrade-observability/4.1.0-to-4.2.0/on-premise/grafana/prerequisites.md renamed to content/en/docs/2025.9/Guides/upgrade-guides/upgrade-observability/4.1.0-to-4.2.1/on-premise/grafana/prerequisites.md

@@ -43,6 +43,5 @@ On the server that Grafana Loki is installed on:
 
 1. [Try it out][]
 
-[backed up]: {{< url path="Cortex.Guides.UpgradeGuides.UpgradeObservability.4_1_0to4_2_0.OnPremise.Grafana.BackupOldFiles" >}}
-[Prerequisites]: {{< url path="Cortex.Guides.UpgradeGuides.UpgradeObservability.4_1_0to4_2_0.OnPremise.Grafana.Prerequisites" >}}
-[Try it out]: {{< url path="Cortex.Guides.UpgradeGuides.UpgradeObservability.4_1_0to4_2_0.OnPremise.Grafana.TryItOut" >}}
+[Prerequisites]: {{< url path="Cortex.Guides.UpgradeGuides.UpgradeObservability.4_1_0to4_2_1.OnPremise.Grafana.Prerequisites" >}}
+[Try it out]: {{< url path="Cortex.Guides.UpgradeGuides.UpgradeObservability.4_1_0to4_2_1.OnPremise.Grafana.TryItOut" >}}

…o-4.2.0/on-premise/grafana/try-it-out.md …o-4.2.1/on-premise/grafana/try-it-out.mdcontent/en/docs/2026.3/Guides/upgrade-guides/upgrade-observability/4.1.0-to-4.2.0/on-premise/grafana/try-it-out.md renamed to content/en/docs/2025.9/Guides/upgrade-guides/upgrade-observability/4.1.0-to-4.2.1/on-premise/grafana/try-it-out.md content/en/docs/2026.3/Guides/upgrade-guides/upgrade-observability/4.1.0-to-4.2.0/on-premise/grafana/try-it-out.md renamed to content/en/docs/2025.9/Guides/upgrade-guides/upgrade-observability/4.1.0-to-4.2.1/on-premise/grafana/try-it-out.md

@@ -1 +1 @@
-28.4.0.25430
+29.1.2.26142

…4.2.0/on-premise/grafana/upgrade-loki.md …4.2.1/on-premise/grafana/upgrade-loki.mdcontent/en/docs/2026.3/Guides/upgrade-guides/upgrade-observability/4.1.0-to-4.2.0/on-premise/grafana/upgrade-loki.md renamed to content/en/docs/2025.9/Guides/upgrade-guides/upgrade-observability/4.1.0-to-4.2.1/on-premise/grafana/upgrade-loki.md content/en/docs/2026.3/Guides/upgrade-guides/upgrade-observability/4.1.0-to-4.2.0/on-premise/grafana/upgrade-loki.md renamed to content/en/docs/2025.9/Guides/upgrade-guides/upgrade-observability/4.1.0-to-4.2.1/on-premise/grafana/upgrade-loki.md

@@ -66,6 +66,6 @@ To do this, follow these steps for all default {{% ctx %}} dashboards imported:
 
 [configured Loki data source]: {{< url path="Cortex.GettingStarted.Cloud.AddObservabilityToInnovation.Grafana.SetupLoki.MainDoc" >}}
 [Grafana]: {{< url path="Cortex.GettingStarted.Cloud.AddObservabilityToInnovation.Grafana.SetupGrafana.MainDoc" >}}
-[Grafana.Dashboards.zip]: {{< url path="GitHub.Cortex.Observability.4_1_0.GrafanaDashboardsZip" >}}
+[Grafana.Dashboards.zip]: {{< url path="GitHub.Cortex.Observability.4_2_1.GrafanaDashboardsZip" >}}
 [Loki]: {{< url path="Cortex.GettingStarted.Cloud.AddObservabilityToInnovation.Grafana.SetupLoki.MainDoc" >}}
-[Try it Out]: {{< url path="Cortex.GettingStarted.Cloud.AddObservabilityToInnovation.Grafana.TryItOut.MainDoc" >}}
+[Try it Out]: {{< url path="Cortex.GettingStarted.Cloud.AddObservabilityToInnovation.Grafana.TryItOut.MainDoc" >}}

content/en/docs/2025.9/_shared/executionPackageCurrentVersion.md

@@ -27,5 +27,5 @@ This archive contains the `config.alloy` configuration file and PowerShell scrip
 
 [Configure Grafana Alloy]: {{< url path="Cortex.GettingStarted.Cloud.AddObservabilityToInnovation.Grafana.InstallAlloy.ConfigureAlloy.MainDoc" >}}
 [Grafana Alloy 1.10.2]:  {{< url path="Grafana.Products.Loki.Alloy.1_10.2" >}}
-[Grafana Alloy.zip]: {{< url path="GitHub.Cortex.Observability.4_1_0.GrafanaAlloyInstallZip" >}}
+[Grafana Alloy.zip]: {{< url path="GitHub.Cortex.Observability.4_2_1.GrafanaAlloyInstallZip" >}}
 [Prerequisites]: {{< url path="Cortex.GettingStarted.OnPremise.AddObservabilityToInnovation.Grafana.Prerequisites" >}}

content/en/docs/2025.9/getting-started/cloud/add-observability-to-innovation/Grafana/import-dashboards.md

@@ -27,6 +27,6 @@ This archive contains the `config.alloy` configuration file and PowerShell scrip
 
 [Configure Grafana Alloy]: {{< url path="Cortex.GettingStarted.OnPremise.AddObservabilityToInnovation.Grafana.InstallAlloy.ConfigureAlloy" >}}
 [Grafana Alloy 1.10.2]:  {{< url path="Grafana.Products.Loki.Alloy.1_10.2" >}}
-[Grafana Alloy.zip]: {{< url path="GitHub.Cortex.Observability.4_1_0.GrafanaAlloyInstallZip" >}}
+[Grafana Alloy.zip]: {{< url path="GitHub.Cortex.Observability.4_2_1.GrafanaAlloyInstallZip" >}}
 [Prerequisites]: {{< url path="Cortex.GettingStarted.OnPremise.AddObservabilityToInnovation.Grafana.Prerequisites" >}}
 [Reverse Proxy Authentication]: {{< url path="Cortex.GettingStarted.OnPremise.AddObservabilityToInnovation.Grafana.InstallLoki.ConfigureAuthentication" >}}