logstash org.elasticsearch.discovery.MasterNotDiscoveredException錯誤

Question

我已經使用elasticcsearch-0.20.6安裝了logstash 1.1.13以下的logstash.conf配置

input {
tcp {
port => 524
type => rsyslog
}
udp {
port => 524
type => rsyslog
}
}
filter {
grok {
type => "rsyslog"
pattern => [ "<%{POSINT:syslog_pri}>%{SYSLOGTIMESTAMP:syslog_timestamp} %{SYSLOGHOST:syslog_hostname} %{PROG:syslog_program}(?:\[%{POSINT:syslog_pid}\])?: %{GREEDYDATA:syslog_message}" ]
add_field => [ "received_at", "%{@timestamp}" ]
add_field => [ "received_from", "%{@source_host}" ]
}
syslog_pri {
type => "rsyslog"
}
date {
type => "rsyslog"
syslog_timestamp => [ "MMM d HH:mm:ss", "MMM dd HH:mm:ss" ]
}
mutate {
type => "rsyslog"
exclude_tags => "_grokparsefailure"
replace => [ "@source_host", "%{syslog_hostname}" ]
replace => [ "@message", "%{syslog_message}" ]
}
mutate {
type => "rsyslog"
remove => [ "syslog_hostname", "syslog_message", "syslog_timestamp" ]
}
}

output {
elasticsearch {
 host => "127.0.0.1"
 port => 9300
 node_name => "sysloG33r-1"
 bind_host => "localhost"
 }
}

和

elasticsearch.yml

cluster: 
    name: syslogcluster
node:
    name: "sysloG33r-1"
path:
    data: /var/lib/elasticsearch
path:
    logs: /var/log/elasticsearch
network:
    host: "0.0.0.0"

並使用命令啟動logstash

    [root@clane elasticsearch]# java -jar /usr/local/bin/logstash/bin/logstash.jar agent -f /etc/logstash/logstash.conf
Using experimental plugin 'syslog_pri'. This plugin is untested and may change in the future. For more information about plugin statuses, see http://logstash.net/docs/1.1.13/plugin-status  {:level=>:warn}
date: You used a deprecated setting 'syslog_timestamp => ["MMM d HH:mm:ss", "MMM dd HH:mm:ss"]'. You should use 'match => [ "syslog_timestamp", "MMM d HH:mm:ss", "MMM dd HH:mm:ss" ]' {:level=>:warn}
PORT SETTINGS 127.0.0.1:9300
log4j, [2013-06-21T14:40:08.013]  WARN: org.elasticsearch.discovery: [sysloG33r-1] waited for 30s and no initial state was set by the discovery
Failed to index an event, will retry {:exception=>org.elasticsearch.discovery.MasterNotDiscoveredException: waited for [1m], :event=>{"@source"=>"tcp://10.66.59.35:34662/", "@tags"=>[], "@fields"=>{"syslog_pri"=>["78"], "syslog_program"=>["crond"], "syslog_pid"=>["6511"], "received_at"=>["2013-06-21T13:40:01.845Z"], "received_from"=>["10.66.59.35"], "syslog_severity_code"=>6, "syslog_facility_code"=>9, "syslog_facility"=>"clock", "syslog_severity"=>"informational"}, "@timestamp"=>"2013-06-21T12:40:01.000Z", "@source_host"=>"kent", "@source_path"=>"/", "@message"=>"(root) CMD (/opt/bin/firewall-state.sh)", "@type"=>"rsyslog"}, :level=>:warn}

和彈性研究

/usr/local/bin/elasticsearch start

我可以看到彈性搜索的所有正確的java端口（9200,9300）和logstash（524）

tcp        0      0 :::524                      :::*                        LISTEN      12557/java          
tcp        0      0 :::9200                     :::*                        LISTEN      10782/java          
tcp        0      0 :::9300                     :::*                        LISTEN      10782/java          
tcp        0      0 ::ffff:127.0.0.1:9301       :::*                        LISTEN      12557/java          
udp        0      0 :::524                      :::*                                    12557/java          
udp        0      0 :::54328                    :::*                                    10782/java 

但是我在logstash上看到這個錯誤，有什么想法嗎？

Failed to index an event, will retry {:exception=>org.elasticsearch.discovery.MasterNotDiscoveredException: waited for [1m], :event=>{"@source"=>"tcp://10.66.59.35:33598/", "@tags"=>[], "@fields"=>{"syslog_pri"=>["78"], "syslog_program"=>["crond"], "syslog_pid"=>["12983"], "received_at"=>["2013-06-21T12:07:01.541Z"], "received_from"=>["10.66.59.35"], "syslog_severity_code"=>6, "syslog_facility_code"=>9, "syslog_facility"=>"clock", "syslog_severity"=>"informational"}, "@timestamp"=>"2013-06-21T11:07:01.000Z", "@source_host"=>"kent", "@source_path"=>"/", "@message"=>"(root) CMD (/opt/bin/firewall-state.sh)", "@type"=>"rsyslog"}, :level=>:warn}

Answer 1

我假設你已經檢查過明顯的事情，比如“ElasticSearch正在運行嗎？” 並且“我可以在localhost上打開到端口9300的TCP連接嗎？”

即使您正在使用host在參數elasticsearch輸出，什么是可能發生的是，在Logstash的ElasticSearch客戶端試圖通過多播來發現群集成員（這是怎樣一個新的安裝通常是默認配置），以及失敗。 這在EC2以及防火牆配置可能會干擾多播發現的許多其他環境中很常見。 如果這是群集中唯一的成員，則在elasticsearch.yml設置以下內容應該可以解決問題：

discovery:
  zen:
    ping:
      multicast:
        enabled: false
      unicast:
        hosts: <your_ip>[9300-9400]

在AWS上，還有一個EC2發現插件，可以為您清除這一點。

順便提一下，這個問題確實屬於Server Fault而不是Stack Overflow。

Answer 2

我遇到了類似的問題，它來自我的ip配置。 簡而言之，檢查logstash主機上只有一個ip地址。 如果沒有，它可以選擇錯誤的。

在這里發表相同的答案： 使用Elasticsearch進行Logstash

Answer 3

我遇到了同樣的問題，並通過在logstash中的elasticsearch conf中添加cluster選項來修復。 由於您已在elasticsearch.yml中修改了群集名稱，因此logstash客戶端將無法使用默認值查找群集。

嘗試這樣做