add a shell script for housekeeping fablab orphaned instances

2026-10-12 07:18:36 +00:00 · 2023-09-26 13:22:20 -04:00
parent af0f2939fe
commit 0e9ae950b6
1 changed files with 94 additions and 0 deletions
@@ -0,0 +1,94 @@
+#!/usr/bin/env bash
+
+set -euo pipefail
+BASENAME=$(basename "$0")
+
+function describe_instances() {
+  cd "$(mktemp -d)"
+  local oldest=$1
+  for region in us-east-1 us-west-2
+  do
+    local outfile="aged-fablab-instances-${region}.json"
+    aws --region "$region" ec2 describe-instances \
+      --filters "Name=instance-state-name,Values=running" \
+                "Name=tag:source,Values=fablab" \
+      --query   "Reservations[*].Instances[*].{InstanceId:InstanceId,LaunchTime:LaunchTime,Tags:Tags}" \
+    | jq -r \
+        --arg region "$region" \
+        --arg oldest "$oldest" '
+        [
+          .[]
+          |.[]
+          |select(.LaunchTime < $oldest)
+          |{InstanceId: .InstanceId, Region: $region, LaunchTime: .LaunchTime, Tags: .Tags}
+        ]
+      ' \
+    | tee $outfile \
+    | jq '.|length' | xargs -ILEN echo "Described LEN aged instances in $region in $(realpath $outfile)"
+  done
+}
+
+function stop_instances(){
+  local stopfile onecount region instanceid
+  stopfile=$1
+  onecount=$(jq '.|length' "$stopfile")
+  for i in $(seq 0 $((onecount-1)))
+  do
+    region=$(jq -r ".[$i].Region" "$stopfile")
+    instanceid=$(jq -r ".[$i].InstanceId" "$stopfile")
+    echo "Stopping $instanceid in $region"
+    aws --region "$region" ec2 stop-instances --instance-ids "$instanceid"
+  done
+}
+
+function terminate_instances(){
+  local stopfile onecount region instanceid
+  stopfile=$1
+  onecount=$(jq '.|length' "$stopfile")
+  for i in $(seq 0 $((onecount-1)))
+  do
+    region=$(jq -r ".[$i].Region" "$stopfile")
+    instanceid=$(jq -r ".[$i].InstanceId" "$stopfile")
+    echo "Terminating $instanceid in $region"
+    aws --region "$region" ec2 terminate-instances --instance-ids "$instanceid"
+  done
+}
+
+check_json_file(){
+  local JSONFILE=$1
+  if [[ -f "$JSONFILE" ]]
+  then
+    jq -e . "$JSONFILE" >/dev/null
+  else
+    echo "Usage: $BASENAME stop|terminate FILE"
+    return 1
+  fi
+}
+
+case "${1:-}" in
+  --help|-h)
+    echo "Usage: $BASENAME [--oldest ISO8601|stop FILE|terminate FILE]"
+    exit 0
+    ;;
+  stop)
+    check_json_file "${2:-}"
+    stop_instances "${2:-}"
+    exit
+    ;;
+  terminate)
+    check_json_file "${2:-}"
+    terminate_instances "${2:-}"
+    exit
+    ;;
+  --oldest)
+    OLDEST="${2:-}"
+    if ! [[ "$OLDEST" =~ ^[0-9]{4}-[0-9]{2}-[0-9]{2} ]];
+    then
+      echo "Usage: $BASENAME --oldest ISO8601 (e.g. 2024-01-01 or 2024-01-01T12:00:00Z)"
+      exit 1
+    fi
+    shift 2
+    ;;
+esac
+
+describe_instances "${OLDEST:-$(date -d '-2 days' -Id)}"