feat: add scripts/update-argo.sh

.pre-commit-config.yaml

@@ -1,7 +1,7 @@
 ---
 repos:
   - repo: https://github.com/pre-commit/pre-commit-hooks
-    rev: v5.0.0
+    rev: v6.0.0
     hooks:
       - id: trailing-whitespace
       - id: end-of-file-fixer
@@ -15,18 +15,18 @@ repos:
       - id: trailing-whitespace
 
   - repo: https://github.com/antonbabenko/pre-commit-terraform
-    rev: v1.92.1
+    rev: v1.105.0
     hooks:
       - id: terraform_fmt
 
   - repo: https://github.com/adrienverge/yamllint.git
-    rev: v1.35.1
+    rev: v1.38.0
     hooks:
       - id: yamllint
         args: [--format, parsable, --strict]
 
   - repo: https://github.com/shellcheck-py/shellcheck-py
-    rev: v0.10.0.1
+    rev: v0.11.0.1
     hooks:
       - id: shellcheck
         files: \.sh

scripts/update-argo.sh

@@ -0,0 +1,129 @@
+#!/usr/bin/env bash
+
+check_kubectl() {
+    if ! command -v kubectl &>/dev/null; then
+        echo "Error: kubectl is not installed or not in PATH" >&2
+        exit 1
+    fi
+    log_info "kubectl found at $(command -v kubectl)"
+}
+
+VERBOSE=0
+
+log_debug() { [[ $VERBOSE -ge 3 ]] && echo "[DEBUG] $*" || true; }
+log_verbose() { [[ $VERBOSE -ge 2 ]] && echo "[VERBOSE] $*" || true; }
+log_info() { [[ $VERBOSE -ge 1 ]] && echo "[INFO] $*" || true; }
+log_error() { echo "[ERROR] $*" >&2; }
+
+usage() {
+    cat <<EOF
+Usage: $(basename "$0") [OPTIONS] [VERSION]
+
+Upgrade ArgoCD to a new version. Requires an existing ArgoCD installation.
+
+Examples:
+  $(basename "$0")                # queries the current argo version and tries to update to the immediate newest version
+  $(basename "$0") v4.3.0        # incrementally update to target version
+
+Options:
+  -h, --help      Show this help message
+  --dry-run       Show what would be done without making changes
+  -v              Verbose output (info level)
+  -vv             More verbose output (info + verbose level)
+  -vvv            Debug output (all log levels)
+EOF
+}
+
+DRY_RUN=false
+
+while [[ $# -gt 0 ]]; do
+    case "$1" in
+        -h|--help)
+            usage
+            exit 0
+            ;;
+        --dry-run)
+            DRY_RUN=true
+            shift
+            ;;
+        -v|-vv|-vvv)
+            case "$1" in
+                -v)   VERBOSE=1 ;;
+                -vv)  VERBOSE=2 ;;
+                -vvv) VERBOSE=3 ;;
+            esac
+            shift
+            ;;
+        -*)
+            echo "Error: Unknown option: $1" >&2
+            usage >&2
+            exit 1
+            ;;
+        *)
+            TARGET_VERSION="$1"
+            shift
+            ;;
+    esac
+done
+
+log_debug "Script started with target version: ${TARGET_VERSION:-auto}"
+
+check_kubectl
+
+log_info "Checking current kubectl context"
+CURRENT_CONTEXT=$(kubectl config current-context 2>/dev/null)
+log_verbose "Current context: $CURRENT_CONTEXT"
+
+log_info "Checking for ArgoCD installation"
+if ! kubectl get ns argocd &>/dev/null; then
+    log_error "ArgoCD namespace not found. This script only upgrades existing installations."
+    exit 1
+fi
+log_verbose "ArgoCD namespace found"
+
+log_info "Checking current ArgoCD version"
+CURRENT_VERSION=$(kubectl get deployment argocd-server -n argocd -o jsonpath='{.spec.template.spec.containers[0].image}' 2>/dev/null)
+if [[ -n "$CURRENT_VERSION" ]]; then
+    CURRENT_VERSION=$(echo "$CURRENT_VERSION" | sed 's/.*argocd:v\?//' | tr -d ' \n')
+    if [[ -n "$CURRENT_VERSION" ]]; then
+        CURRENT_VERSION="${CURRENT_VERSION#v}"
+        log_verbose "Current ArgoCD version: $CURRENT_VERSION"
+    else
+        log_error "Could not extract ArgoCD version from image: $CURRENT_VERSION"
+        exit 1
+    fi
+fi
+
+if [[ -z "$TARGET_VERSION" ]]; then
+    log_info "No target version specified, querying for latest version"
+    log_verbose "Fetching latest release from GitHub"
+    LATEST_VERSION=$(curl -s https://api.github.com/repos/argoproj/argo-cd/releases/latest | grep -oP '"tag_name":\s*"\K[^"]+' | sed 's/^v//')
+    if [[ -n "$LATEST_VERSION" ]]; then
+        log_verbose "Latest version available: $LATEST_VERSION"
+        TARGET_VERSION="$LATEST_VERSION"
+    else
+        echo "Error: Could not fetch latest version" >&2
+        exit 1
+    fi
+fi
+
+log_info "Target version: $TARGET_VERSION"
+
+log_debug "Determining update path from $CURRENT_VERSION to $TARGET_VERSION"
+
+log_info "Applying ArgoCD manifests"
+log_verbose "Downloading manifest from https://raw.githubusercontent.com/argoproj/argo-cd/v${TARGET_VERSION}/manifests/install.yaml"
+curl -sLO "https://raw.githubusercontent.com/argoproj/argo-cd/v${TARGET_VERSION}/manifests/install.yaml"
+
+log_debug "Applying manifest with kubectl"
+if [[ "$DRY_RUN" == true ]]; then
+    log_verbose "Dry-run mode: would apply manifest"
+    kubectl apply -n argocd -f install.yaml --dry-run=client
+else
+    kubectl apply -n argocd -f install.yaml
+fi
+
+log_verbose "Cleaning up downloaded manifest"
+rm -f install.yaml
+
+log_info "Update to ArgoCD $TARGET_VERSION initiated"