docs: added Documentation for Air-Gapped Installation

devtron-images.txt.source

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+quay.io/devtron/image-scanner:3ab2ba46-141-23064
+quay.io/devtron/inception:473deaa4-185-21582
+public.ecr.aws/docker/library/redis:7.0.5-alpine
+quay.io/argoproj/argocd:v2.5.2
+quay.io/argoproj/workflow-controller:v3.4.3
+quay.io/devtron/authenticator:e414faff-393-13273
+quay.io/devtron/bats:v1.4.1
+quay.io/devtron/busybox:1.31.1
+quay.io/devtron/chart-sync:b67ab589-150-23082
+quay.io/devtron/curl:7.73.0
+quay.io/devtron/dashboard:87aaf7ac-690-23135
+quay.io/devtron/devtron-utils:dup-chart-repo-v1.1.0
+quay.io/devtron/devtron:3aa7e420-434-23146
+quay.io/devtron/dex:v2.30.2
+quay.io/devtron/git-sensor:8545feb5-200-22005
+quay.io/devtron/grafana:7.3.1
+quay.io/devtron/k8s-sidecar:1.1.0
+quay.io/devtron/k8s-utils:tutum-curl
+quay.io/devtron/kubectl:latest
+quay.io/devtron/kubelink:a810dbae-564-23055
+quay.io/devtron/kubewatch:f8ac0fe6-419-23054
+quay.io/devtron/lens:3d3e8f08-333-23057
+quay.io/devtron/migrator:v4.16.2
+quay.io/devtron/nats-box
+quay.io/devtron/nats-server-config-reloader:0.6.2
+quay.io/devtron/nats:2.9.3-alpine
+quay.io/devtron/notifier:924a17f6-372-22110
+quay.io/devtron/postgres:11.9
+quay.io/devtron/postgres_exporter:v0.10.1
+quay.io/devtron/prometheus-nats-exporter:0.9.0
+quay.io/devtron/minio:RELEASE.2021-02-14T04-01-33Z
+quay.io/devtron/clair:4.3.6
+quay.io/devtron/postgres:11.9.0-debian-10-r26
+quay.io/devtron/postgres_exporter:v0.4.7
+quay.io/devtron/minio-mc:RELEASE.2021-02-14T04-28-06Z
+quay.io/devtron/minideb:latest
+

docs/setup/install/install-devtron-in-airgapped-environment.md

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+# Devtron Full Mode Installation in an Airgapped Environment
+
+## Pre-requisites
+
+1. Install `podman` or `docker` and `yq` on the VM from where you're executing the installation commands.
+2. Clone the Devtron Helm chart:
+
+    ```bash
+    git clone https://github.com/devtron-labs/devtron.git
+    cd devtron
+    ```
+
+
+4. Set the value of `TARGET_REGISTRY`, `TARGET_REGISTRY_USERNAME`, and `TARGET_REGISTRY_TOKEN`. This registry should be accessible from the VM where you are running the cloning script and the K8s cluster where you’re installing Devtron.
+
+## Docker Instructions
+
+### For Linux/amd64
+
+1. Set the environment variables:
+
+    ```bash
+    # Set the source registry URL
+    export SOURCE_REGISTRY="quay.io/devtron"
+
+    # Set the target registry URL, username, and token/password
+    export TARGET_REGISTRY_URL=""
+    export TARGET_REGISTRY_USERNAME=""
+    export TARGET_REGISTRY_TOKEN=""
+
+    # Set the source and target image file names with default values if not already set
+    SOURCE_IMAGES_LIST="${SOURCE_IMAGES_LIST:=devtron-images.txt.source}"
+    TARGET_IMAGES_LIST="${TARGET_IMAGES_LIST:=devtron-images.txt.target}"
+    ```
+
+2. Log in to the target Docker registry:
+
+    ```bash
+    docker login -u $TARGET_REGISTRY_USERNAME -p $TARGET_REGISTRY_TOKEN $TARGET_REGISTRY_URL
+    ```
+
+3. Clone the images:
+
+    ```bash
+    while IFS= read -r source_image; do
+      # Check if the source image belongs to the quay.io/devtron registry
+      if [[ "$source_image" == quay.io/devtron/* ]]; then
+        # Replace the source registry with the target registry in the image name
+        target_image="${source_image/quay.io\/devtron/$TARGET_REGISTRY_URL}"
+
+      # Check if the source image belongs to the quay.io/argoproj registry
+      elif [[ "$source_image" == quay.io/argoproj/* ]]; then
+        # Replace the source registry with the target registry in the image name
+        target_image="${source_image/quay.io\/argoproj/$TARGET_REGISTRY_URL}"
+
+      # Check if the source image belongs to the public.ecr.aws/docker/library registry
+      elif [[ "$source_image" == public.ecr.aws/docker/library/* ]]; then
+        # Replace the source registry with the target registry in the image name
+        target_image="${source_image/public.ecr.aws\/docker\/library/$TARGET_REGISTRY_URL}"
+      fi
+
+      # Pull the image from the source registry
+      docker pull --platform linux/amd64 $source_image
+
+      # Tag the image with the new target registry name
+      docker tag $source_image $target_image
+
+      # Push the image to the target registry
+      docker push $target_image
+
+      # Output the updated image name
+      echo "Updated image: $target_image"
+
+      # Append the new image name to the target images file
+      echo "$target_image" >> "$TARGET_IMAGES_LIST"
+
+    done < "$SOURCE_IMAGES_LIST"
+    ```
+
+### For Linux/arm64
+
+1. Set the environment variables:
+
+    ```bash
+    # Set the source registry URL
+    export SOURCE_REGISTRY="quay.io/devtron"
+
+    # Set the target registry URL, username, and token/password
+    export TARGET_REGISTRY_URL=""
+    export TARGET_REGISTRY_USERNAME=""
+    export TARGET_REGISTRY_TOKEN=""
+
+    # Set the source and target image file names with default values if not already set
+    SOURCE_IMAGES_LIST="${SOURCE_IMAGES_LIST:=devtron-images.txt.source}"
+    TARGET_IMAGES_LIST="${TARGET_IMAGES_LIST:=devtron-images.txt.target}"
+    ```
+
+2. Log in to the target Docker registry:
+
+    ```bash
+    docker login -u $TARGET_REGISTRY_USERNAME -p $TARGET_REGISTRY_TOKEN $TARGET_REGISTRY_URL
+    ```
+
+3. Clone the images:
+
+    ```bash
+    while IFS= read -r source_image; do
+      # Check if the source image belongs to the quay.io/devtron registry
+      if [[ "$source_image" == quay.io/devtron/* ]]; then
+        # Replace the source registry with the target registry in the image name
+        target_image="${source_image/quay.io\/devtron/$TARGET_REGISTRY_URL}"
+
+      # Check if the source image belongs to the quay.io/argoproj registry
+      elif [[ "$source_image" == quay.io/argoproj/* ]]; then
+        # Replace the source registry with the target registry in the image name
+        target_image="${source_image/quay.io\/argoproj/$TARGET_REGISTRY_URL}"
+
+      # Check if the source image belongs to the public.ecr.aws/docker/library registry
+      elif [[ "$source_image" == public.ecr.aws/docker/library/* ]]; then
+        # Replace the source registry with the target registry in the image name
+        target_image="${source_image/public.ecr.aws\/docker\/library/$TARGET_REGISTRY_URL}"
+      fi
+
+      # Pull the image from the source registry
+      docker pull --platform linux/arm64 $source_image
+
+      # Tag the image with the new target registry name
+      docker tag $source_image $target_image
+
+      # Push the image to the target registry
+      docker push $target_image
+
+      # Output the updated image name
+      echo "Updated image: $target_image"
+
+      # Append the new image name to the target images file
+      echo "$target_image" >> "$TARGET_IMAGES_LIST"
+
+    done < "$SOURCE_IMAGES_LIST"
+    ```
+
+## Podman Instructions
+
+### For Multi-arch
+
+1. Set the environment variables:
+
+    ```bash
+    export SOURCE_REGISTRY="quay.io/devtron"
+    export SOURCE_REGISTRY_TOKEN=#Enter token provided by Devtron team
+    export TARGET_REGISTRY=#Enter target registry url 
+    export TARGET_REGISTRY_USERNAME=#Enter target registry username 
+    export TARGET_REGISTRY_TOKEN=#Enter target registry token/password
+    ```
+
+2. Log in to the target Podman registry:
+
+    ```bash
+    podman login -u $TARGET_REGISTRY_USERNAME -p $TARGET_REGISTRY_TOKEN $TARGET_REGISTRY
+    ```
+
+3. Clone the images:
+
+    ```bash
+    SOURCE_REGISTRY="quay.io/devtron"
+    TARGET_REGISTRY=${TARGET_REGISTRY}
+    SOURCE_IMAGES_FILE_NAME="${SOURCE_IMAGES_FILE_NAME:=devtron-images.txt.source}"
+    TARGET_IMAGES_FILE_NAME="${TARGET_IMAGES_FILE_NAME:=devtron-images.txt.target}"
+
+    cp $SOURCE_IMAGES_FILE_NAME $TARGET_IMAGES_FILE_NAME
+    while read source_image; do
+      if [[ "$source_image" == *"workflow-controller:"* || "$source_image" == *"argoexec:"* || "$source_image" == *"argocd:"* ]]
+      then
+        SOURCE_REGISTRY="quay.io/argoproj"
+        sed -i "s|${SOURCE_REGISTRY}|${TARGET_REGISTRY}|g" $TARGET_IMAGES_FILE_NAME
+      elif [[ "$source_image" == *"redis:"* ]]
+      then
+        SOURCE_REGISTRY="public.ecr.aws/docker/library"
+        sed -i "s|${SOURCE_REGISTRY}|${TARGET_REGISTRY}|g" $TARGET_IMAGES_FILE_NAME
+      else
+        SOURCE_REGISTRY="quay.io/devtron"
+        sed -i "s|${SOURCE_REGISTRY}|${TARGET_REGISTRY}|g" $TARGET_IMAGES_FILE_NAME
+      fi
+    done <$SOURCE_IMAGES_FILE_NAME
+    echo "Target Images file finalized"
+
+    while read -r -u 3 source_image && read -r -u 4 target_image ; do
+      echo "Pushing $source_image $target_image"
+      podman manifest create $source_image
+      podman manifest add $source_image $source_image --all
+      podman manifest push $source_image $target_image --all
+    done 3<"$SOURCE_IMAGES_FILE_NAME" 4<"$TARGET_IMAGES_FILE_NAME"
+    ```
+
+## Final Step
+
+Change your registry name in `values.yaml` at line number 10:
+
+```bash
+yq e '.global.imageRegistry = "<your-registry-name>"' -i /charts/devtron/values.yaml