7. Upgrade HBase

Start the Zookeeper zkServer and NameNode services.
Upgrade HBase.
Run the following commands on both the HBase Master and the RegionServers hosts.
- For RHEL/CentOS/Oracle Linux:
```
yum upgrade hbase
```
- For SLES:
  Run the following commands:
```
zypper rm hbase
zypper up hbase
```
Replace your configuration after upgrading. Replace the HBase template configuration in /etc/hbase/conf.
As the HBase user, run an upgrade:
```
sudo su -l $HBASE_USER -c "hbase upgrade -execute"
```
You should see a completed Znode upgrade with no errors.

Start services. Run as root:

Suppose $HBASE_USER = hbase
sudo su -l hbase -c "/usr/lib/hbase/bin/hbase-daemon.sh --config /etc/hbase/conf start master"
sudo su -l hbase -c "/usr/lib/hbase/bin/hbase-daemon.sh --config /etc/hbase/conf start regionserver"

Check processes.

ps -ef | grep -i hmaster
ps -ef | grep -i hregion

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