采用默认安装时是可以成功安装的,但是只能在本机通过127.0.0.1:9200访问,修改: network.host: 为本机IP后,启动报错。
elasticsearch 5.3 安装过程中遇到了一些问题,这里简单记录一下 。
问题一:警告提示
[2016-11-06T16:27:21,712][WARN ][o.e.b.JNANatives ] unable to install syscall filter:
java.lang.UnsupportedOperationException: seccomp unavailable: requires kernel 3.5+ with CONFIG_SECCOMP and CONFIG_SECCOMP_FILTER compiled in 
 at org.elasticsearch.bootstrap.Seccomp.linuxImpl(Seccomp.java:349) ~[elasticsearch-5.3.0.jar:5.3.0] 
 at org.elasticsearch.bootstrap.Seccomp.init(Seccomp.java:630) ~[elasticsearch-5.3.0.jar:5.3.0]
报了一大串错误,其实只是一个警告。
解决:使用心得linux版本,就不会出现此类问题了。
问题二: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]
解决:切换到root用户,编辑limits.conf 添加类似如下内容
vi /etc/security/limits.conf
添加如下内容:
- soft nofile 65536 
- hard nofile 131072 
- soft nproc 2048 
- hard nproc 4096 - system call filters failed to install; check the logs and fix your configuration or disable system call filters at your own risk 
原因: 
 这是在因为Centos6不支持SecComp,而ES5.2.0默认bootstrap.system_call_filter为true进行检测,所以导致检测失败,失败后直接导致ES不能启动。
解决: 
 在elasticsearch.yml中配置bootstrap.system_call_filter为false,注意要在Memory下面: 
 bootstrap.memory_lock: false 
 bootstrap.system_call_filter: false
问题三:max number of threads [1024] for user [lish] likely too low, increase to at least [2048]
解决:切换到root用户,进入limits.d目录下修改配置文件。
vi /etc/security/limits.d/90-nproc.conf
修改如下内容:
- soft nproc 1024
修改为
- soft nproc 2048
问题四:max virtual memory areas vm.max_map_count [65530] likely too low, increase to at least [262144]
解决:切换到root用户修改配置sysctl.conf
vi /etc/sysctl.conf
添加下面配置:
vm.max_map_count=655360
并执行命令:
sysctl -p
然后,重新启动elasticsearch,即可启动成功。