!/bin/bash ES_VERSION=7.17.5 UBUNTU_URL="https://mirrors.tuna.tsinghua.edu.cn/elasticstack/7.x/apt/pool/main/e/elasticsearch/elasticsearch-${ES_VERSION}-amd64.deb" RHEL_URL="https://mirrors.tuna.tsinghua.edu.cn/elasticstack/7.x/yum/${ES_VERSION}/elasticsearch-${ES_VERSION}-x86_64.rpm" LOCAL_IP=...