Upgrade the Ambari Agents

Upgrade all Ambari Agents. On each host in your cluster running an Ambari Agent:

For RHEL/CentOS/Oracle Linux:
```
yum upgrade ambari-agent
```

For SLES:

zypper up ambari-agent

	Note
	Ignore the warning that begins with "There are some running programs that use files deleted by recent upgrade".

	Important
When performing upgrade on SLES, you will see a message "There is an update candidate for 'ambari-agent', but it is from different vendor. Use 'zypper install ambari-agent-2.6-143.noarch' to install this candidate". You will need to use yast to update the package, as follows: Display the command line UI for YaST by entering: > yast Choose Software > Software Management, then click Enter. In the Search Phrase field, enter ambari-agent, then click the Enter button. On the right side you will see the search result `ambari-agent 2.6`. Click Actions, choose Update, then click the Enter button. Go to Accept, and click enter.

Important

When performing upgrade on SLES, you will see a message "There is an update candidate for 'ambari-agent', but it is from different vendor. Use 'zypper install ambari-agent-2.6-143.noarch' to install this candidate". You will need to use yast to update the package, as follows:

Display the command line UI for YaST by entering:
```
> yast
```
Choose Software > Software Management, then click Enter.
In the Search Phrase field, enter ambari-agent, then click the Enter button.
On the right side you will see the search result ambari-agent 2.6. Click Actions, choose Update, then click the Enter button.
Go to Accept, and click enter.

For Ubuntu/Debian:

apt-get update
apt-get install ambari-agent

After the upgrade process completes, check each host to make sure the new files have been installed:
For RHEL/CentOS/Oracle Linux 7:
```
rpm -qa | grep ambari-agent
```
For SLES 12:
```
rpm -qa | grep ambari-agent
```
For Ubuntu 14:
```
dpkg -l ambari-agent
```
For Ubuntu 16:
```
dpkg -l ambari-agent
```
For Debian 9:
```
dpkg -l ambari-agent
```