今天心血來潮在虛擬機上搭了個elasticsearch用來跑以前寫的一個日志收集項目，基本網上所踩得坑我全踩了(mmp.......)，以下就是我踩坑的全過程。
1、首先啟動后報了個：X-Pack is not supported and Machine Learning is not available for [linux-x86]; you can use the other X-Pack features (unsupported) by setting xpack.ml.enabled: false in elasticsearch.yml
解決方案：去到elasticsearch的配置文件中 config/elasticsearch.yml新增一條配置: xpack.ml.enabled: false
2、在配置文件增加外網配置以后如下圖所示
出現了一堆錯誤：
一個個解決
[1]: max file descriptors [4096] for elasticsearch process is too low, increase to at least [65535]
解決：在/etc/security/limits.conf 文件中加入這幾行配置
加入之后使用ulimit -Hu命令查看發現結果還是4096的話，就繼續在/etc/profile中加入ulimit -SHn 65536 就可以成功解決
[2]: max virtual memory areas vm.max_map_count [65530] is too low, increase to at least [262144]
解決：修改/etc/sysctl.conf文件，增加配置vm.max_map_count=262144
執行：sysctl -p 后可以生效
[3]: JVM is using the client VM [Java HotSpot(TM) Client VM] but should be using a server VM for the best performance
解決：打開你安裝的jdk文件下的 jre/lib/i386/jvm.cfg 修改配置信息的位置
[4]: system call filters failed to install; check the logs and fix your configuration or disable system call filters at your own risk
解決：contos6不支持SecComp，打開elasticsearch下的配置文件 config/elasticsearch.yml 新增兩行配置
[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
解決：取消注釋保留一個節點，打開elasticsearch下的配置文件 config/elasticsearch.yml
踩坑完畢，希望可以幫到大家