could not find java; set JAVA_HOME or ensure java is in PATH
首先需要安装java
1、yum list installed |grep java 查看当前有没有装
有的话先卸载
yum -y remove java-1.8.0-openjdk* *表时卸载所有openjdk相关文件输入
yum -y remove tzdata-java.noarch 卸载tzdata-java
安装java
yum install java-1.8.0-openjdk java-1.8.0-openjdk-devel
启动
sudo -iu www-data /usr/local/elasticsearch/bin/elasticsearch
如果还有报错的话
Exception in thread "main" java.nio.file.AccessDeniedException: /usr/local/elasticsearch/config/jvm.
则要为当前用户添加权限
chown www-data /usr/local/elasticsearch -R