elasticSearch启动报错：elasticsearch: OpenJDK 64-Bit Server VM warning: If the number of processors is expected to increase from one, then you should configure the number of parallel GC threads appropriately using -XX:ParallelGCThreads=N

在jvm.options 中加入：（/usr/local/elasticsearch/config/jvm.options）

-XX:+AssumeMP

如果是docker-compose，则

elasticsearch1:
    image: docker.elastic.co/elasticsearch/elasticsearch:6.2.3
    restart: always
    container_name: elasticsearch1
    environment:
      - cluster.name=docker-cluster
      - bootstrap.memory_lock=true
      - "ES_JAVA_OPTS=-Xms256m -Xmx256m -XX:+AssumeMP"
    ulimits:
      memlock:
        soft: -1
        hard: -1
      nofile:
        soft: 65536
        hard: 65536
    mem_limit: 1g
    cap_add:
      - IPC_LOCK
    volumes:
      - esdata1:/usr/share/elasticsearch/data
    ports:
      - 9200:9200
    networks:
      - code-network