elasticsearch常见错误及解决方案

1.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

解决方案:

2.java.lang.RuntimeException: don't run elasticsearch as root

解决方案:  增加一个专用用户

　　1). adduser es

　　2). passwd es

　　3).chown -R es:es [es目录]

　　通过es账户启动

3.max virtual memory areas vm.max_map_count [65530]is too low, increase to at least [262144]

解决方案: 

　　　　修改/etc/sysctl.conf配置文件，添加vm.max_map_count=262144,重启或重新加载配置

4.max file descriptors [65535] for elasticsearchprocess is too low, increase to at least [65536]

解决方案: 

　　　　修改/etc/security/limits.conf文件,把所有的65535改到65536

5.外网访问

解决方案: 修改elasticsearch.yml文件  增加 network.host :0.0.0.0   ,外加防火墙开启9200端口