安装elasticsearch报错

淡淡的烟草味﹌ 2022-12-01 15:43 318阅读 0赞

ERROR: [5] bootstrap checks failed
    [1]: max file descriptors [4096] for elasticsearch process is too low, increase to at least [65535]
    [2]: max number of threads [3802] for user [elastic] is too low, increase to at least [4096]
    [3]: max virtual memory areas vm.max_map_count [65530] is too low, increase to at least [262144]
    [4]: JVM is using the serial collector but should not be for the best performance; either it's the default for the VM [Java HotSpot(TM) 64-Bit Server VM] or -XX:+UseSerialGC was explicitly specified
    [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

错误【1、2】的解决、编辑/etc/security/limits.conf

文末追加

* soft nofile 65536  # 可打开的文件描述符的最大数(软限制)
    * hard nofile 65536  # 可打开的文件描述符的最大数(硬限制)
    * soft nproc 4096    # 单个用户可用的最大进程数量(软限制)
    * hard nproc 4096    # 单个用户可用的最大进程数量(硬限制)

此文件修改后需要重新登录用户，才会生效，登录后使用ulimit -S -n/ulimit -H -n查看

错误【3】elastic用户拥有的最大虚拟内存太小，至少需要262144

修改配置文件vi /etc/sysctl.conf

加入

vm.max_map_count=262144

执行命令

[root@localhost ~]# sysctl -p
    vm.max_map_count = 262144

错误【5】at least one of \[discovery.seed\_hosts, discovery.seed\_providers, cluster.initial\_master\_nodes\] must be configured

上述几个配置至少配置一个，去掉如下注释

#cluster.initial_master_nodes: ["node-1", "node-2"]

错误【6】

master not discovered yet, this node has not previously joined a bootstrapped (v7+) cluster, and this node must discover master-eligible nodes [node-1, node-2] to bootstrap a cluster

大意是主节点没有找到，检查配置文件\#cluster.initial\_master\_nodes: \["node-1", "node-2"\]注释已被放开，再网上看有个\#node.name: node-1被注释掉了，放开重启就行了