node settings must not contain any index level settings
问题: 
解决:https://github.com/medcl/elasticsearch-analysis-ik#install
在elasticsearch.yml中将index.analysis.analyzer.ik.type : "ik" 替换为: 在elasticsearch.yml中将index.analysis.analyzer.ik.type : "ik" 替换为:
index:
analysis:
analyzer:
ik:
alias: [ik_analyzer]
type: org.elasticsearch.index.analysis.IkAnalyzerProvider
ik_max_word:
type: ik
use_smart: false
ik_smart:
type: ik
use_smart: true