elk5.0 版本遇到的安装问题

问题1：max_map_count不够大

max virtual memory areas vm.max_map_count [65536] likely too low, increase to at least [262144]

解决：内核参数（max_map_count）

cat /proc/sys/vm/max_map_count 查看一下

echo 1000000 >> /proc/sys/vm/max_map_count 然后重定向修改文件的值

 

问题2：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-5.0.0.jar:5.0.0]

at org.elasticsearch.bootstrap.Seccomp.init(Seccomp.java:630) ~[elasticsearch-5.0.0.jar:5.0.0]

报了一大串错误，其实只是一个警告。

解决：使用心新linux版本，就不会出现此类问题了。

 

问题3：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

 

问题4：进程数不够

max number of threads [2047] for user [elk] likely too low, increase to at least [2048]

解决： cat /proc/sys/kernel/threads-max 查看进程的总数

ulimit -a 查看所有用户的进程数

ulimit -u 2048 修改进程数为2048