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Prerequisites

For the complete documentation index see: llms.txt

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Applies to

This tutorial uses the following software versions.

Prerequisites

This tutorial requires:

  • A Bash terminal with curl, grep, awk, tr, cp, chmod, mkdir, and sleep.
  • Docker 20.10 or later with Docker Compose v2, a running Docker service, and at least 4 GB of memory available to Docker.
  • An Aerospike Database Enterprise Edition feature-key file that is valid for version 8.1.1.0 and includes asdb-change-notification true. Community Edition does not support change notification and does not work for this tutorial. You can download a free Enterprise Edition feature-key file good for 60 days from Get started with Aerospike.
  • Network access to the container registries used by the tutorial. Access to the Elasticsearch connector image is subject to the requirements described in Install the Elasticsearch connector.
  • The container names aerospike, elasticsearch, aerospike-elasticsearch-outbound, and aerospike-tools, and local ports 8902 and 9200, must be available.

Optional readiness check

If you are not sure whether your system meets the prerequisites, open a terminal in the directory containing your features.conf feature-key file and run the following check. The script reports every check that passes or fails and returns a nonzero status if anything is missing. It inspects image manifests but does not pull images or start, stop, or remove containers.

Terminal
bash <<'CHECK'
FEATURE_KEY_FILE="./features.conf"
failures=0


pass() {
  printf 'PASS  %s\n' "$1"
}


fail() {
  printf 'FAIL  %s\n' "$1" >&2
  failures=$((failures + 1))
}


version_at_least() {
  local actual="${1#v}"
  local required="$2"
  local index actual_part required_part
  local -a actual_parts required_parts


  actual="${actual%%[-+]*}"
  IFS=. read -r -a actual_parts <<< "$actual"
  IFS=. read -r -a required_parts <<< "$required"


  for index in 0 1 2 3; do
    actual_part="${actual_parts[$index]:-0}"
    required_part="${required_parts[$index]:-0}"
    actual_part="${actual_part%%[!0-9]*}"
    required_part="${required_part%%[!0-9]*}"
    actual_part="${actual_part:-0}"
    required_part="${required_part:-0}"


    if ((actual_part > required_part)); then
      return 0
    fi
    if ((actual_part < required_part)); then
      return 1
    fi
  done


  return 0
}


for command_name in curl grep awk tr cp chmod mkdir sleep; do
  if command -v "$command_name" >/dev/null 2>&1; then
    pass "$command_name is installed"
  else
    fail "$command_name is not installed"
  fi
done


docker_installed=0
docker_running=0


if command -v docker >/dev/null 2>&1; then
  docker_installed=1
  docker_output="$(docker --version 2>/dev/null)"
  docker_version="${docker_output#Docker version }"
  docker_version="${docker_version%%,*}"
  if version_at_least "$docker_version" "20.10"; then
    pass "Docker ${docker_version} meets the 20.10 minimum"
  else
    fail "Docker ${docker_version:-unknown} does not meet the 20.10 minimum"
  fi
else
  fail "docker is not installed"
fi


if ((docker_installed)); then
  if docker compose version >/dev/null 2>&1; then
    pass "Docker Compose v2 is installed"
  else
    fail "Docker Compose v2 is not installed"
  fi


  if docker info >/dev/null 2>&1; then
    docker_running=1
    pass "Docker service is running"
    memory_bytes="$(docker info --format '{{.MemTotal}}' 2>/dev/null)"
    if [[ "$memory_bytes" =~ ^[0-9]+$ ]] && ((memory_bytes >= 4294967296)); then
      pass "Docker has at least 4 GB of memory available"
    else
      fail "Docker has less than 4 GB of memory available"
    fi
  else
    fail "Docker service is not running"
  fi
fi


if [ -r "$FEATURE_KEY_FILE" ]; then
  pass "Feature-key file is readable"
else
  fail "Feature-key file is not readable: $FEATURE_KEY_FILE"
fi


if grep -Eq '^asdb-change-notification[[:space:]]+true$' "$FEATURE_KEY_FILE" 2>/dev/null; then
  pass "Feature key enables change notification"
else
  fail "Feature key does not enable change notification"
fi


if ((docker_installed)); then
  for image in \
    aerospike/aerospike-server-enterprise:8.1.1.0 \
    docker.elastic.co/elasticsearch/elasticsearch:9.5.0 \
    aerospike/aerospike-elasticsearch-outbound:3.0.2 \
    aerospike/aerospike-tools:13.0.1; do
    if docker manifest inspect "$image" >/dev/null 2>&1; then
      pass "Container image is accessible: $image"
    else
      fail "Container image is not accessible: $image"
    fi
  done
fi


if ((docker_running)); then
  for container_name in aerospike elasticsearch aerospike-elasticsearch-outbound aerospike-tools; do
    if docker container inspect "$container_name" >/dev/null 2>&1; then
      fail "Container name is already in use: $container_name"
    else
      pass "Container name is available: $container_name"
    fi
  done
fi


for port in 8902 9200; do
  curl --silent --output /dev/null --noproxy '*' \
    --connect-timeout 1 --max-time 1 "http://127.0.0.1:${port}"
  curl_status=$?
  if [ "$curl_status" -eq 7 ]; then
    pass "Local port is available: $port"
  else
    fail "Local port might already be in use: $port"
  fi
done


printf '\n'
if [ "$failures" -eq 0 ]; then
  printf 'READY  All prerequisite checks passed.\n'
else
  printf 'NOT READY  %s prerequisite check(s) failed.\n' "$failures" >&2
  exit 1
fi
CHECK

The feature-key checks confirm that the file is readable and declares change notification. Aerospike Database validates the key’s signature and version or date limits when the container starts.