往 Kafka 里面寫數(shù)據(jù)時(shí), 默認(rèn)在不存在那個(gè)topic 時(shí)弱判，會(huì)自動(dòng)創(chuàng)建
測(cè)試能否連上某臺(tái)機(jī)器的 kafka
yum install telnet
yum install telnet-server
telnet 10.10.10.35 9092
如果
Trying 10.10.10.35...
Connected to 10.10.10.35.
Escape character is '^]'.
說明可以連通祸挪。
同樣適用于 zoomkeeper:
telnet 10.0.201.83 2181
Trying 10.0.201.83...
Connected to 10.0.201.83.
Escape character is '^]'.
