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问题一：
max number of threads [2048] for user [work] likely too low, increase to at least [4096]解决方法：进入limits.d下的配置文件：vi /etc/security/limits.d/90-nproc.conf ，修改配置。问题二：
system call filters failed to install;解决方法在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转载于:https://blog.51cto.com/417722381/2107687