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Producer | |
Setup | |
bin/kafka-topics.sh --zookeeper esv4-hcl197.grid.linkedin.com:2181 --create --topic test-rep-one --partitions 6 --replication-factor 1 | |
bin/kafka-topics.sh --zookeeper esv4-hcl197.grid.linkedin.com:2181 --create --topic test --partitions 6 --replication-factor 3 | |
Single thread, no replication | |
bin/kafka-run-class.sh org.apache.kafka.clients.tools.ProducerPerformance test7 50000000 100 -1 acks=1 bootstrap.servers=esv4-hcl198.grid.linkedin.com:9092 buffer.memory=67108864 batch.size=8196 |
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neo4j on Centos 7 | |
August 2017 | |
Quick install - no frills | |
ensure oracle java is already installed and operational | |
see my other note on pesky java installations | |
acquire the tar archive, unwrap in eg /opt | |
cd /opt | |
tar -xf neo4j-community-3.2.2-unix.tar.gz |
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1. raid | |
1.1 查看物理卷信息 | |
/opt/MegaRAID/MegaCli/MegaCli64 -pdlist -aall | |
1.2 查看逻辑卷+物理卷 | |
/opt/MegaRAID/MegaCli/MegaCli64 -ldpdinfo -aall | |
1.2.1 查看逻辑卷 | |
/opt/MegaRAID/MegaCli/MegaCli64 -ldinfo -lall -aall |