Docker 安装 Elasticsearch

为了Skywalking 准备

elasticsearch 至少 需要2G内存

docker pull elasticsearch:7.9.3
docker run --name elasticsearch -p 9200:9200 -p 9300:9300 
    -e "discovery.type=single-node" 
    -v /opt/elasticsearch/logs:/usr/share/elasticsearch/logs 
    -d elasticsearch:7.9.3 

注：Linux 主机目录 /opt/elasticsearch/ 要设权限，否则会启不来
如果启不来，通过下列命令查看日志

docker logs --since 30m elasticsearch 
docker logs --tail=100 -f elasticsearch