1. max number of threads [1024] for user [elasticsearch] is too low, increase to at least [2048]
修改 /etc/security/limits.d/90-nproc.conf
2. max virtual memory areas vm.max_map_count [65530] is too low, increase to at least [262144]
修改/etc/sysctl.conf配置文件
sysctl -w vm.max_map_count=262144
sysctl -a|grep vm.max_map_count
3. max file descriptors [65535] for elasticsearch process likely too low, increase to at least [65536]
ulimit -n 65536
/etc/security/limits.conf
4. system call
bootstrap.system_call_filter: false
5. memory locking requested for elasticsearch process but memory is not locked
ulimit -l unlimited
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