[search@192 bin]$ ./elasticsearch -d
future versions of Elasticsearch will require Java 11; your Java version from [/data/web/env/jdk1.8.0_271/jre] does not meet this requirement
[search@192 bin]$ ERROR: [1] bootstrap checks failed
[1]: max virtual memory areas vm.max_map_count [65530] is too low, increase to at least [262144]
ERROR: Elasticsearch did not exit normally - check the logs at /usr/local/elasticsearch/elasticsearch-7.6.0/logs/my-esCluster.log
max virtual memory areas vm.max_map_count [65530] is too low, increase to at least [262144]解决方法：
1.临时设置：
执行以下命令来临时增加 vm.max_map_count 的值：
sudo sysctl -w vm.max_map_count=262144
这将立即生效，但在系统重启后将失效。
2.永久设置：
编辑 /etc/sysctl.conf 文件，添加或修改以下行：
vm.max_map_count=262144
然后运行以下命令来使改动生效：
sudo sysctl -p
