Add ES index backup script for upgrade safety

Author: vharmain

elasticsearch/backup-indexes.sh

@@ -0,0 +1,65 @@
+#!/bin/bash
+# Backup Elasticsearch indexes before ES 7->8 upgrade
+# Run from lipas root: ./elasticsearch/backup-indexes.sh
+
+set -e
+
+BACKUP_DIR="./data/es-backup-$(date +%Y%m%d-%H%M%S)"
+mkdir -p "$BACKUP_DIR"
+
+echo "Backing up to: $BACKUP_DIR"
+
+# Indexes to backup (excluding logstash, sports_sites, loi, legacy, search)
+INDEXES=(
+  "analytics-2024-09-15t14-18-01-881678"
+  "city_stats"
+  #"diversity-2022-10-01t19-32-50-999"
+  #"diversity-2022-10-02-initial"
+  #"diversity-2023-12-28t15-35-55-575928"
+  "diversity-2025-11-01-harmonized"
+  #"diversity-2025-11-01t18-31-48-076648"
+  "kunnat_2021_wgs84"
+  "kunnat_2021_wgs84_fixed"
+  #"population-1km-2023-12-31t11-50-44-797"
+  "population-1km-2025-11-01-harmonized"
+  #"population-1km-2025-11-01t16-06-49-692277"
+  #"population-250m-2023-12-29t14-29-03-761335"
+  "population-250m-2025-11-01-harmonized"
+  #"population-250m-2025-11-01t16-28-46-364857"
+  #"population-250m-2025-11-01t16-32-19-479132"
+  "schools"
+  "subsidies"
+  "vaestoruutu_1km_2019_kp"
+  "vaestoruutu_250m_2020_kp"
+)
+
+backup_index() {
+  local index=$1
+  local backup_subdir="/data/es-backup-$(date +%Y%m%d-%H%M%S)"
+
+  echo "=== Backing up: $index ==="
+
+  # Backup mapping
+  docker compose run --rm elasticdump \
+    --input=http://elasticsearch:9200/$index \
+    --output=/data/$index.mapping.json \
+    --type=mapping
+
+  # Backup data
+  docker compose run --rm elasticdump \
+    --input=http://elasticsearch:9200/$index \
+    --output=/data/$index.data.json \
+    --type=data \
+    --limit=10000
+
+  echo "  Done: $index"
+}
+
+for index in "${INDEXES[@]}"; do
+  backup_index "$index"
+done
+
+echo ""
+echo "=== Backup complete ==="
+echo "Files saved to: ./data/"
+ls -lh ./data/*.json 2>/dev/null | tail -20