Setup Capture Configmap

1#!/usr/bin/env bash
2# Deploy the fixed Linux capture runner as a ConfigMap.
3# Exit codes: 0 = success/help, 1 = kubectl/read failure, 2 = usage/argument error.
4set -euo pipefail
5
6usage() {
7  cat <<EOF
8Usage: $0 [namespace]
9
10Deploy run-capture.sh as the network-capture-scripts ConfigMap.
11The namespace defaults to "default".
12EOF
13}
14
15usage_error() {
16  echo "Error: $*" >&2
17  usage >&2
18  exit 2
19}
20
21die() {
22  echo "Error: $*" >&2
23  exit 1
24}
25
26case "${1:-}" in
27  -h|--help)
28    usage
29    exit 0
30    ;;
31esac
32[ "$#" -le 1 ] || usage_error "expected at most one namespace"
33
34NAMESPACE="${1:-default}"
35case "$NAMESPACE" in
36  ""|-*|*-|*[!a-z0-9-]*) usage_error "namespace must be an RFC 1123 label" ;;
37esac
38[ "${#NAMESPACE}" -le 63 ] || usage_error "namespace must not exceed 63 characters"
39
40command -v kubectl >/dev/null 2>&1 || die "kubectl is not installed or not on PATH"
41SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
42[ -r "$SCRIPT_DIR/run-capture.sh" ] || die "run-capture.sh is not readable"
43
44kubectl create configmap network-capture-scripts \
45  --from-file=run-capture.sh="$SCRIPT_DIR/run-capture.sh" \
46  --namespace="$NAMESPACE" \
47  --dry-run=client -o yaml \
48  | kubectl apply -f -
49
50echo "ConfigMap network-capture-scripts created or updated in namespace: $NAMESPACE"