elasticsearch 5.1 安裝過程中遇到了一些問題做一些記錄。

問題一：警告提示
[2016-12-20T22:37:28,543][INFO ][o.e.b.BootstrapCheck     ] [elk-node1] bound or publishing to a non-loopback or non-link-local address, enforcing bootstrap checks
[2016-12-20T22:37:28,552][ERROR][o.e.b.Bootstrap          ] [elk-node1] node validation exception
bootstrap checks failed
max number of threads [1024] for user [elasticsearch] is too low, increase to at least [2048]
[2016-12-20T22:37:28,560][INFO ][o.e.n.Node               ] [elk-node1] stopping ...
[2016-12-20T22:37:28,628][INFO ][o.e.n.Node               ] [elk-node1] stopped
[2016-12-20T22:37:28,629][INFO ][o.e.n.Node               ] [elk-node1] closing ...
[2016-12-20T22:37:28,677][INFO ][o.e.n.Node               ] [elk-node1] closed

報了一大串錯誤，其實只是一個警告。

解決：使用心得linux版本，就不會出現此類問題了。

問題二：ERROR: bootstrap checks failed
max file descriptors [4096] for elasticsearch process likely too low, increase to at least [65536]
max number of threads [1024] for user [lishang] likely too low, increase to at least [2048]
解決：切換到root用戶，編輯limits.conf 添加類似如下內容
vi /etc/security/limits.conf 

添加如下內容:

* soft nofile 65536
* hard nofile 131072
* soft nproc 2048
* hard nproc 4096
 
問題三：max number of threads [1024] for user [lish] likely too low, increase to at least [2048]

解決：切換到root用戶，進入limits.d目錄下修改配置文件。
vi /etc/security/limits.d/90-nproc.conf 
修改如下內容：

* soft nproc 1024
#修改為
* soft nproc 2048

問題四：max virtual memory areas vm.max_map_count [65530] likely too low, increase to at least [262144]

解決：切換到root用戶修改配置sysctl.conf

vi /etc/sysctl.conf 
添加下面配置：
vm.max_map_count=655360
並執行命令：
sysctl -p
然後，重新啟動elasticsearch，即可啟動成功。

elasticsearch-5.1.1 安裝的問題