問題一：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使用者，編輯limits.conf 新增類似如下內容
vi /etc/security/limits.conf 

新增如下內容:

* soft nofile 65536
* hard nofile 131072
* soft nproc 2048
* hard nproc 4096

 

問題二：max virtual memory areas vm.max_map_count [65530] likely too low, increase to at least [262144]

解決：切換到root使用者修改配置sysctl.conf

vi /etc/sysctl.conf 
新增下面配置：
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。