1,安装报错如下


[hadoop@Slave1 elasticsearch1.7]$ bin/plugin -install kafka-river -url https://github.com/mariamhakobyan/elasticsearch-river-kafka/releases/download/v1.2.1/elasticsearch-river-kafka-1.2.1-plugin.zip
-> Installing kafka-river...
Trying https://github.com/mariamhakobyan/elasticsearch-river-kafka/releases/download/v1.2.1/elasticsearch-river-kafka-1.2.1-plugin.zip...
Failed: SSLException[java.security.ProviderException: java.security.InvalidAlgorithmParameterException]; nested: ProviderException[java.security.InvalidAlgorithmParameterException]; nested: InvalidAlgorithmParameterException; 
Trying https://github.com/null/kafka-river/archive/master.zip...
Failed to install kafka-river, reason: failed to download out of all possible locations..., use --verbose to get detailed information



2,解决办法:执行下面即可

hadoop@Slave1 elasticsearch1.7]$ sudo yum -y upgrade nss