系统：centos7.x
elastic版本：6.7.2
java版本：1.8
[root@zrl /]# wget https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-6.7.2.tar.gz #下载文件 [root@zrl /]# tar -zxvf elasticsearch-6.7.2.tar.gz # 解压 [root@zrl /]# cd elasticsearch-6.7.2 # 进去文件夹
接着，进入解压后的目录，运行下面的命令，启动 Elastic
[root@zrl /]# ./bin/elasticsearch # 启动
这时候遇到的错误
Java HotSpot(TM) 64-Bit Server VM warning: INFO: os::commit_memory(0x00000000c5330000, 986513408, 0) failed; error=‘Cannot allocate memory‘ (errno=12) # # There is insufficient memory for the Java Runtime Environment to continue. # Native memory allocation (mmap) failed to map 986513408 bytes for committing reserved memory. # An error report file with more information is saved as: # logs/hs_err_pid9590.log
这个时候去修改jvm.options,找到虚拟机参数分配内存改小点
... -Xms256m -Xmx256m ...
接着碰到下面的错误,很明显意思就是不能运行在root账号下
org.elasticsearch.bootstrap.StartupException: java.lang.RuntimeException: can not run elasticsearch as root
创建一个elastic账号
[root@zrl /]# adduser elastic # 创建elastic账号 [root@zrl /]# passwd elastic # 修改密码 [root@zrl /]# chown -R elastic elasticsearch-6.7.2 # 给elastic账号权限 [root@zrl /]# su elastic # 切换到elastic用户 [elastic@zrl /]$ ./bin/elasticsearch -d # 启动并在后台运行
[elastic@zrl /]$ cur localhost:9200 # 应该会得到json字符串
访问的时候，又出现新的错误
curl: (7) Failed connect to 106.14.14.158:9200; Connection refused
修改confg/elasticsearch.yml,中
network.host: 0.0.0.0
查看log的时候发现又有一条错误
max number of threads [3897] for user [elastic] is too low, increase to at least [4096]
修改配置 添加 * soft nproc 4096
[root@zrl /] vim /etc/security/limit.d/20-nproc.conf
继续重启,然后访问
[elastic@zrl /]$ ./bin/elasticsearch -d # 启动并在后台运行 [elastic@zrl /]$ cur localhost:9200 # 应该会得到json字符串
{ "name" : "JRMD634", "cluster_name" : "elasticsearch", "cluster_uuid" : "ewobaquGTy2bXVD16fA-Ow", "version" : { "number" : "6.7.2", "build_flavor" : "default", "build_type" : "tar", "build_hash" : "56c6e48", "build_date" : "2019-04-29T09:05:50.290371Z", "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" }
原文：https://www.cnblogs.com/zrl66/p/14197364.html