ES三节点重启后报错no known master node

Posted lemon-le

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问题

一直在研究ES的监控怎么做，想偷点懒，不去通过API获取然后计算，就想找个现成的插件或者监控软件，只要装个agent就可以，然后就找到了x-pack，插件装好了之后，需要重启ES集群，线上的ES集群我想着既然是集群一台一台重启应该不会有问题的，太高估了，重启一台后，整个集群挂了......
 

操作过程

1、系统
[centos@ip-172-0-0-233 bin]$ cat /etc/redhat-release 
CentOS Linux release 7.6.1810 (Core)

 

2、ES版本
[centos@ip-172-0-0-233 bin]$ ./elasticsearch --version
Version: 5.0.2, Build: f6b4951/2016-11-24T10:07:18.101Z, JVM: 1.8.0_131

 

3、杀进程

ps -ef | grep pid
kill -9 pid

这样操作完就后悔了，不是每个服务都是这么杀的，不知道这步操作对集群挂了有没有一定的影响。

 

4、报错信息

[2019-10-17T08:43:39,084][INFO ][o.e.p.PluginsService     ] [node-1] loaded module [lang-painless]
[2019-10-17T08:43:39,084][INFO ][o.e.p.PluginsService     ] [node-1] loaded module [percolator]
[2019-10-17T08:43:39,084][INFO ][o.e.p.PluginsService     ] [node-1] loaded module [reindex]
[2019-10-17T08:43:39,084][INFO ][o.e.p.PluginsService     ] [node-1] loaded module [transport-netty3]
[2019-10-17T08:43:39,084][INFO ][o.e.p.PluginsService     ] [node-1] loaded module [transport-netty4]
[2019-10-17T08:43:39,084][INFO ][o.e.p.PluginsService     ] [node-1] no plugins loaded
[2019-10-17T08:43:41,612][INFO ][o.e.n.Node               ] [node-1] initialized
[2019-10-17T08:43:41,613][INFO ][o.e.n.Node               ] [node-1] starting ...
[2019-10-17T08:43:41,812][INFO ][o.e.t.TransportService   ] [node-1] publish_address {172.0.0.16:9300}, bound_addresses {172.30.36.146:9300}
[2019-10-17T08:43:41,817][INFO ][o.e.b.BootstrapCheck     ] [node-1] bound or publishing to a non-loopback or non-link-local address, enforcing bootstrap checks

[2019-10-17T08:44:11,833][WARN ][o.e.n.Node               ] [node-1] timed out while waiting for initial discovery state - timeout: 30s
[2019-10-17T08:44:11,839][INFO ][o.e.h.HttpServer         ] [node-1] publish_address {172.0.0.16:9200}, bound_addresses {172.30.36.146:9200}
[2019-10-17T08:44:11,839][INFO ][o.e.n.Node               ] [node-1] started
[2019-10-17T08:44:12,001][DEBUG][o.e.a.a.i.c.TransportCreateIndexAction] [node-1] no known master node, scheduling a retry
[2019-10-17T08:44:12,001][DEBUG][o.e.a.a.i.c.TransportCreateIndexAction] [node-1] no known master node, scheduling a retry
[2019-10-17T08:44:12,003][DEBUG][o.e.a.a.i.c.TransportCreateIndexAction] [node-1] no known master node, scheduling a retry
[2019-10-17T08:44:12,010][DEBUG][o.e.a.a.c.s.TransportClusterStateAction] [node-1] no known master node, scheduling a retry
[2019-10-17T08:44:12,010][DEBUG][o.e.a.a.c.s.TransportClusterStateAction] [node-1] no known master node, scheduling a retry
[2019-10-17T08:44:12,228][DEBUG][o.e.a.a.i.c.TransportCreateIndexAction] [node-1] no known master node, scheduling a retry
[2019-10-17T08:44:12,758][DEBUG][o.e.a.a.i.c.TransportCreateIndexAction] [node-1] no known master node, scheduling a retry
[2019-10-17T08:44:12,759][DEBUG][o.e.a.a.c.s.TransportClusterStateAction] [node-1] no known master node, scheduling a retry
[2019-10-17T08:44:12,760][DEBUG][o.e.a.a.i.c.TransportCreateIndexAction] [node-1] no known master node, scheduling a retry
[2019-10-17T08:44:12,814][DEBUG][o.e.a.a.i.c.TransportCreateIndexAction] [node-1] no known master node, scheduling a retry
[2019-10-17T08:44:12,814][DEBUG][o.e.a.a.i.c.TransportCreateIndexAction] [node-1] no known master node, scheduling a retry
[2019-10-17T08:44:12,815][DEBUG][o.e.a.a.i.c.TransportCreateIndexAction] [node-1] no known master node, scheduling a retry
[2019-10-17T08:44:12,815][DEBUG][o.e.a.a.i.c.TransportCreateIndexAction] [node-1] no known master node, scheduling a retry
[2019-10-17T08:44:12,817][DEBUG][o.e.a.a.i.c.TransportCreateIndexAction] [node-1] no known master node, scheduling a retry
[2019-10-17T08:44:12,817][DEBUG][o.e.a.a.i.c.TransportCreateIndexAction] [node-1] no known master node, scheduling a retry
[2019-10-17T08:44:12,817][DEBUG][o.e.a.a.i.c.TransportCreateIndexAction] [node-1] no known master node, scheduling a retry
[2019-10-17T08:44:12,820][DEBUG][o.e.a.a.i.c.TransportCreateIndexAction] [node-1] no known master node, scheduling a retry
[2019-10-17T08:44:12,820][DEBUG][o.e.a.a.i.c.TransportCreateIndexAction] [node-1] no known master node, scheduling a retry
[2019-10-17T08:44:12,821][DEBUG][o.e.a.a.i.c.TransportCreateIndexAction] [node-1] no known master node, scheduling a retry
[2019-10-17T08:44:12,822][DEBUG][o.e.a.a.i.c.TransportCreateIndexAction] [node-1] no known master node, scheduling a retry
[2019-10-17T08:44:12,822][DEBUG][o.e.a.a.i.c.TransportCreateIndexAction] [node-1] no known master node, scheduling a retry
[2019-10-17T08:44:12,823][DEBUG][o.e.a.a.i.c.TransportCreateIndexAction] [node-1] no known master node, scheduling a retry
[2019-10-17T08:44:12,824][DEBUG][o.e.a.a.i.c.TransportCreateIndexAction] [node-1] no known master node, scheduling a retry
[2019-10-17T08:44:12,826][DEBUG][o.e.a.a.i.c.TransportCreateIndexAction] [node-1] no known master node, scheduling a retry
[2019-10-17T08:44:12,827][DEBUG][o.e.a.a.i.c.TransportCreateIndexAction] [node-1] no known master node, scheduling a retry
[2019-10-17T08:44:12,827][DEBUG][o.e.a.a.i.c.TransportCreateIndexAction] [node-1] no known master node, scheduling a retry
[2019-10-17T08:44:12,828][DEBUG][o.e.a.a.i.c.TransportCreateIndexAction] [node-1] no known master node, scheduling a retry
[2019-10-17T08:44:12,828][DEBUG][o.e.a.a.i.c.TransportCreateIndexAction] [node-1] no known master node, scheduling a retry
[2019-10-17T08:44:12,830][DEBUG][o.e.a.a.i.c.TransportCreateIndexAction] [node-1] no known master node, scheduling a retry
[2019-10-17T08:44:12,830][DEBUG][o.e.a.a.i.c.TransportCreateIndexAction] [node-1] no known master node, scheduling a retry
[2019-10-17T08:44:42,012][DEBUG][o.e.a.a.c.s.TransportClusterStateAction] [node-1] timed out while retrying [cluster:monitor/state] after failure (timeout [30s])
[2019-10-17T08:44:42,012][DEBUG][o.e.a.a.c.s.TransportClusterStateAction] [node-1] timed out while retrying [cluster:monitor/state] after failure (timeout [30s])
[2019-10-17T08:44:42,013][WARN ][r.suppressed             ] path: /_cluster/state/metadata, params: {metric=metadata}
org.elasticsearch.discovery.MasterNotDiscoveredException
    at org.elasticsearch.action.support.master.TransportMasterNodeAction$AsyncSingleAction$5.onTimeout(TransportMasterNodeAction.java:214) [elasticsearch-5.0.2.jar:5.0.2]
    at org.elasticsearch.cluster.ClusterStateObserver$ContextPreservingListener.onTimeout(ClusterStateObserver.java:350) [elasticsearch-5.0.2.jar:5.0.2]
    at org.elasticsearch.cluster.ClusterStateObserver$ObserverClusterStateListener.onTimeout(ClusterStateObserver.java:240) [elasticsearch-5.0.2.jar:5.0.2]
    at org.elasticsearch.cluster.service.ClusterService$NotifyTimeout.run(ClusterService.java:957) [elasticsearch-5.0.2.jar:5.0.2]
    at org.elasticsearch.common.util.concurrent.ThreadContext$ContextPreservingRunnable.run(ThreadContext.java:458) [elasticsearch-5.0.2.jar:5.0.2]
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [?:1.8.0_151]
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [?:1.8.0_151]
    at java.lang.Thread.run(Thread.java:748) [?:1.8.0_151]
[2019-10-17T08:44:42,013][WARN ][r.suppressed             ] path: /_cluster/state/metadata, params: {metric=metadata}
org.elasticsearch.discovery.MasterNotDiscoveredException
    at org.elasticsearch.action.support.master.TransportMasterNodeAction$AsyncSingleAction$5.onTimeout(TransportMasterNodeAction.java:214) [elasticsearch-5.0.2.jar:5.0.2]
    at org.elasticsearch.cluster.ClusterStateObserver$ContextPreservingListener.onTimeout(ClusterStateObserver.java:350) [elasticsearch-5.0.2.jar:5.0.2]
    at org.elasticsearch.cluster.ClusterStateObserver$ObserverClusterStateListener.onTimeout(ClusterStateObserver.java:240) [elasticsearch-5.0.2.jar:5.0.2]
    at org.elasticsearch.cluster.service.ClusterService$NotifyTimeout.run(ClusterService.java:957) [elasticsearch-5.0.2.jar:5.0.2]
    at org.elasticsearch.common.util.concurrent.ThreadContext$ContextPreservingRunnable.run(ThreadContext.java:458) [elasticsearch-5.0.2.jar:5.0.2]
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [?:1.8.0_151]
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [?:1.8.0_151]
    at java.lang.Thread.run(Thread.java:748) [?:1.8.0_151]
[2019-10-17T08:44:42,760][DEBUG][o.e.a.a.c.s.TransportClusterStateAction] [node-1] timed out while retrying [cluster:monitor/state] after failure (timeout [30s])
[2019-10-17T08:44:42,761][WARN ][r.suppressed             ] path: /_cluster/state/metadata, params: {metric=metadata}
org.elasticsearch.discovery.MasterNotDiscoveredException
    at org.elasticsearch.action.support.master.TransportMasterNodeAction$AsyncSingleAction$5.onTimeout(TransportMasterNodeAction.java:214) [elasticsearch-5.0.2.jar:5.0.2]
    at org.elasticsearch.cluster.ClusterStateObserver$ContextPreservingListener.onTimeout(ClusterStateObserver.java:350) [elasticsearch-5.0.2.jar:5.0.2]
    at org.elasticsearch.cluster.ClusterStateObserver$ObserverClusterStateListener.onTimeout(ClusterStateObserver.java:240) [elasticsearch-5.0.2.jar:5.0.2]
    at org.elasticsearch.cluster.service.ClusterService$NotifyTimeout.run(ClusterService.java:957) [elasticsearch-5.0.2.jar:5.0.2]
    at org.elasticsearch.common.util.concurrent.ThreadContext$ContextPreservingRunnable.run(ThreadContext.java:458) [elasticsearch-5.0.2.jar:5.0.2]
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [?:1.8.0_151]
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [?:1.8.0_151]
    at java.lang.Thread.run(Thread.java:748) [?:1.8.0_151]
 
 
5、配置文件
cluster.name: lile
node.name: node-1
bootstrap.memory_lock: true
network.host: 172.0.0.16
http.port: 9200
discovery.zen.ping.unicast.hosts: ["172.0.0.16","172.0.0.17","172.0.0.18"]
discovery.zen.minimum_master_nodes: 2
http.cors.enabled: true 
http.cors.allow-origin: "*"
path.data: /data/elasticsearch/data
path.logs: /data/elasticsearch/logs

 

三、解决办法

各种重启都没有，在网上查到的，都是重启就好了，但是使劲的重启也没好。但是当discovery.zen.minimum_master_nodes这个值设置为1的时候，可以启动成功，但是三台都成了master了。后来看到有个这个参数，加上然后全部重启就好了。
 
 
discovery.zen.ping_timeout: 60s

 

四、分析原因

还没细究，感觉是集群互相查找的时间太短了，没有找到对方，因为得2台才能形成集群
 

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