Istio Version documentation

.github/ISSUE_TEMPLATE/istio_update.md

@@ -19,6 +19,7 @@ ACs:
 - [ ] Istio module upgrades with zero downtime - https://github.com/kyma-project/istio/issues/429
 - [ ] Tests and documentation updated if needed.
 - [ ] Verify that sidecars are in sync with Control Plane.
+- [ ] Istio and Envoy Version updated in the `README.md`. The scripts `scripts/get_module_istio_version.sh` and `scripts/get_module_envoy_version.sh` can be used to extract the versions.
 
 **DoD:**
 - [ ] Provide documentation.

README.md

@@ -11,6 +11,9 @@ Istio is an open-source service mesh that provides a uniform way to manage, conn
 
 Kyma Istio Operator is a component of the Kyma runtime that handles the management and configuration of the Istio service mesh. Within Kyma Istio Operator, [Istio Controller](/docs/user/00-10-overview-istio-controller.md) is responsible for installing, uninstalling, and upgrading Istio.
 
+**Istio version:** 1.21.2  
+**Envoy version:** 1.29.4
+
 ## Install Kyma Istio Operator and Istio from the latest release
 
 ### Prerequisites

docs/release-notes/template.md

@@ -9,4 +9,4 @@
 
 ## Fixed Bugs
 
-- Some bug fix
+- Some bug fix

scripts/create_draft_release.sh

@@ -20,8 +20,16 @@ GITHUB_URL=https://api.github.com/repos/${REPOSITORY}
 GITHUB_AUTH_HEADER="Authorization: Bearer ${GITHUB_TOKEN}"
 CHANGELOG_FILE=$(cat CHANGELOG.md)
 RELEASE_NOTES_FILE=$(cat "docs/release-notes/${RELEASE_TAG}.md")
+
+ISTIO_VERSION=$("scripts/get_module_istio_version.sh")
+ENVOY_VERSION=$("scripts/get_module_envoy_version.sh" $ISTIO_VERSION)
+
 BODY="${RELEASE_NOTES_FILE}
 
+## Versions
+- Istio: ${ISTIO_VERSION}
+- Envoy: ${ENVOY_VERSION}
+
 ${CHANGELOG_FILE}"
 
 JSON_PAYLOAD=$(jq -n \

scripts/get_module_envoy_version.sh

@@ -0,0 +1,20 @@
+#!/usr/bin/env bash
+
+# standard bash error handling
+set -o nounset  # treat unset variables as an error and exit immediately.
+set -o errexit  # exit immediately when a command fails.
+set -E          # needs to be set if we want the ERR trap
+set -o pipefail # prevents errors in a pipeline from being masked
+
+if [ "$#" -lt 1 ]; then
+    echo "The Istio tag must be provided as the first argument"
+    exit 1
+fi
+
+ISTIO_TAG=$1
+
+# The command will have a return in the following format: /usr/local/bin/envoy  version: bcf6c19288e9d4a133f815657c951539018bc9bb/1.29.4-dev/Clean/RELEASE/BoringSSL
+# We need to sanitize the version by removing newlines
+# To avoid confusion we also remove the -dev suffix
+docker run --rm --entrypoint "/usr/local/bin/envoy" europe-docker.pkg.dev/kyma-project/prod/external/istio/proxyv2:${ISTIO_TAG}-distroless --version | awk '{print $3}' | awk -F'/' '{print $2}' | tr -d '\n' | sed 's/-dev//'
+

scripts/get_module_istio_version.sh

@@ -0,0 +1,14 @@
+#!/usr/bin/env bash
+
+# standard bash error handling
+set -o nounset  # treat unset variables as an error and exit immediately.
+set -o errexit  # exit immediately when a command fails.
+set -E          # needs to be set if we want the ERR trap
+set -o pipefail # prevents errors in a pipeline from being masked
+
+# - Find the line containing the "tag:" in the the istio-operator.yaml
+# - Extract the tag
+# - Remove " from the string
+# - Remove the -distroless in the tag
+cat internal/istiooperator/istio-operator.yaml | grep "tag:" | awk '{print $2}' | tr -d '"' | awk -F'-' '{print $1}'
+