CentOS6.5安装Elasticsearch6.7.0问题及解决方案
CentOs6.5集群搭建请参考
安装启动Elasticsearch
下载Elasticsearch6.7.0，可以使用官网方式下载，也可以在百度搜索百度网盘下载，下载之后使用WinSCP将文件传到虚拟机中
创建用户
adduser abc
passwd abc
#设置密码,输入两遍
使用root账户对abc账户设置文件夹/usr/local/elasticsearch-6.7.0的操作权限
chown -R abc:abc /usr/local/elasticsearch-6.7.0
若abc账户没有操作权限, 启动时会报错
Exception in thread "main" java.nio.file.AccessDeniedException: /root/home/searchengine/elasticsearch-6.2.4/config/jvm.options
at sun.nio.fs.UnixException.translateToIOException(UnixException.java:84)
at sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:102)
at sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:107)
at sun.nio.fs.UnixFileSystemProvider.newByteChannel(UnixFileSystemProvider.java:214)
at java.nio.file.Files.newByteChannel(Files.java:361)
at java.nio.file.Files.newByteChannel(Files.java:407)
at java.nio.file.spi.FileSystemProvider.newInputStream(FileSystemProvider.java:384)
at java.nio.file.Files.newInputStream(Files.java:152)
at org.elasticsearch.tools.launchers.JvmOptionsParser.main(JvmOptionsParser.java:58)
解压文件
tar -zxvf elasticsearch-6.7.0.tar.gz
解压后切换abc用户, 进入elasticsearch-6.7.0/bin文件夹中，执行以下命令启动elasticsearch
su abc
cd elasticsearch-6.7.0/bin
./elasticsearch
启动成功信息如下, 默认不修改配置文件时,启动端口为9200
另外打开一个shell窗口,执行如下命令检测elasticsearch是否启动可用
curl localhost:9200
看到如下提示信息则启动成功!
[root@eshop-cache01 ~]# curl localhost:9200
{
"name" : "1QlQqSA",
"cluster_name" : "elasticsearch",
"cluster_uuid" : "W7En4K-tQGmW25gchCJ69w",
"version" : {
"number" : "6.7.0",
"build_flavor" : "default",
"build_type" : "tar",
"build_hash" : "8453f77",
"build_date" : "2019-03-21T15:32:29.844721Z",
"build_snapshot" : false,
"lucene_version" : "7.7.0",
"minimum_wire_compatibility_version" : "5.6.0",
"minimum_index_compatibility_version" : "5.0.0"
},
"tagline" : "You Know, for Search"
}
安装启动过程中可能会出现一些问题:
1.缺少配置信息报错
ElasticsearchException[X-Pack is not supported and Machine Learning is not available for [windows-x86]; you can use the other X-Pack features (unsupported) by setting xpack.ml.enabled: false in elasticsearch.yml]
在config/elasticsearch.yml添加一条配置：
xpack.ml.enabled: false
注意在开头有一个空格, 在false和:之间有一个空格, 一定要加上,如果缺少冒号之后的空格会报错
Exception in thread "main" SettingsException[Failed to load settings from [elasticsearch.yml]]; nested: ElasticsearchParseException[malformed, expected settings to start with 'object', instead was [VALUE_STRING]];
暂时记录这么几个问题, 问题完美修复!