elasticsearch安装 及 启动异常解决

虚拟机使用net连接模式
1
Download and unzip the latest Elasticsearch distribution

2
Run bin/elasticsearch on Unix or bin\elasticsearch.bat on Windows

3
Run curl -X GET http://localhost:9200/

官网 ：www.elastic.co
包含 安装介质 和 权威指南

1下载
elasticsearch 下载地址： https://www.elastic.co/cn/downloads/elasticsearch
linux 对应版本 elasticsearch-7.0.0-rc2-linux-x86_64.tar.gz 大小330 MB

2建用户
useradd es
passwd es
123456
es/123456

3上传到虚拟机
put elasticsearch-7.0.0-rc2-linux-x86_64.tar.gz

4解压
tar -zxvf elasticsearch-7.0.0-rc2-linux-x86_64.tar.gz
启动
cd elasticsearch-7.0.0-rc2/bin
./elasticsearch

5警告跳过
unable to install syscall filter:
java.lang.UnsupportedOperationException: seccomp unavailable: requires kernel 3.5+ with CONFIG_SECCOMP and CONFIG_SECCOMP_FILTER compiled in

6检验
http://localhost:9200/

{
“name” : “localhost.localdomain”,
“cluster_name” : “elasticsearch”,
“cluster_uuid” : “WuVD9aKLTYyt_XbWbxZxAg”,
“version” : {
“number” : “7.0.0-rc2”,
“build_flavor” : “default”,
“build_type” : “tar”,
“build_hash” : “f076a79”,
“build_date” : “2019-04-02T17:20:40.380908Z”,
“build_snapshot” : false,
“lucene_version” : “8.0.0”,
“minimum_wire_compatibility_version” : “6.7.0”,
“minimum_index_compatibility_version” : “6.0.0-beta1”
},
“tagline” : “You Know, for Search”
}

遇到得问题
7 http://ip:9200/ 无法访问

vim config/elasticsearch.yml

增加

network.host: 0.0.0.0

8重启 es 异常

ERROR: [5] bootstrap checks failed
[1]: max file descriptors [4096] for elasticsearch process is too low, increase to at least [65535]
[2]: max number of threads [1024] for user [es] is too low, increase to at least [4096]
[3]: max virtual memory areas vm.max_map_count [65530] is too low, increase to at least [262144]
[4]: failed to install; check the logs and fix your configuration or disable system call filters at your own risk
[5]: the default discovery settings are unsuitable for production use; at least one of [discovery.seed_hosts, discovery.seed_providers, cluster.initial_master_nodes] must be configured
[2019-04-09T09:51:29,228][INFO ][o.e.n.Node ] [localhost.localdomain] stopping …
[2019-04-09T09:51:29,264][INFO ][o.e.n.Node ] [localhost.localdomain] stopped
[2019-04-09T09:51:29,265][INFO ][o.e.n.Node ] [localhost.localdomain] closing …
[2019-04-09T09:51:29,320][INFO ][o.e.n.Node ] [localhost.localdomain] closed
[2019-04-09T09:51:29,323][INFO ][o.e.x.m.p.NativeController] [localhost.localdomain] Native controller process has stopped - no new native processes can be started
切换root用户
vi /etc/security/limits.conf

在倒数第二行

• soft nofile 65536
• hard nofile 65536

End of file

vi /etc/sysctl.conf
添加

vm.max_map_count=655360

保存后执行
sysctl -p

重启es 异常

ERROR: [3] bootstrap checks failed
[1]: max number of threads [1024] for user [es] is too low, increase to at least [4096]
[2]: system call filters failed to install; check the logs and fix your configuration or disable system call filters at your own risk
[3]: the default discovery settings are unsuitable for production use; at least one of [discovery.seed_hosts, discovery.seed_providers, cluster.initial_master_nodes] must be configured

vi /etc/security/limits.d/90-nproc.conf
修改

•      soft    nproc     1024
  1

为

•      soft    nproc     4096
  1

重启es 异常

ERROR: [2] bootstrap checks failed
[1]: system call filters failed to install; check the logs and fix your configuration or disable system call filters at your own risk
[2]: the default discovery settings are unsuitable for production use; at least one of [discovery.seed_hosts, discovery.seed_providers, cluster.initial_master_nodes] must be configured

在 elasticsearch.yml中添加配置项：bootstrap.system_call_filter为false：

bootstrap.memory_lock: false
bootstrap.system_call_filter: false

重启es 异常

ERROR: [1] bootstrap checks failed
[1]: the default discovery settings are unsuitable for production use; at least one of [discovery.seed_hosts, discovery.seed_providers, cluster.initial_master_nodes] must be configured
修改
elasticsearch.yml
取消注释保留一个节点
cluster.initial_master_nodes: [“node-1”]
这个的话，这里的node-1是上面一个默认的记得打开就可以了

重启 正常