Shulou(Shulou.com)06/03 Report--

Note: I use vm to build the service of 4 nodes, which are the zk installed on node01,node02,node03,node04; node02,node03,node04, node01 is the master node of hadoop, and node02,node03,node04 is the child node of hadoop. I install hbase on node04 for hmaster,node03 and hmater,node01,node02,node03 for HregionServer

Note: the time on each node should be consistent, otherwise there will be problems when writing hbase

There are other ways to synchronize time on Baidu.

Update time from the time server with ntpdate

If the linux system does not have the command ntpdate, you can enter the following code to install it

Yum install ntp

After the installation, you don't have to do any configuration, and you don't need to test it directly.

Vi / etc/ntp.conf

Add below:

Server 1.cn.pool.ntp.org

Server 3.asia.pool.ntp.org

Server 2.asia.pool.ntp.org

Restart service and sync the time

[root@localhost ~] # ntpdate time.nist.gov

22 Oct 21:11:43 ntpdate [5014]: adjust time server 207.200.81.113 offset-0.018788 sec

If the above shows that the synchronization is successful, then add the following to the crontab.

/ 10 * ntpdate time.nist.gov # domain name or IP

Synchronize every ten minutes. Recommend several time servers.

Time.nist.gov

Time.nuri.net

0.asia.pool.ntp.org

1.asia.pool.ntp.org

2.asia.pool.ntp.org

3.asia.pool.ntp.org

1. Upload hbase installation package and decompress it, configure environment variables

Modify the JAVA_HOME path in the hbase_env.sh under $HBASE_HOME/conf and turn off the zookeeper that comes with Hbase (export HBASE_MANAGES_ZK=false)

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