gistfile1.txt

# SSM Agent Installation

sudo yum install -y https://s3.amazonaws.com/ec2-downloads-windows/SSMAgent/latest/linux_amd64/amazon-ssm-agent.rpm
Loaded plugins: fastestmirror
amazon-ssm-agent.rpm                                                                                                                                                                 |  19 MB  00:00:03     
Examining /var/tmp/yum-root-VVJ_i7/amazon-ssm-agent.rpm: amazon-ssm-agent-2.3.479.0-1.x86_64
Marking /var/tmp/yum-root-VVJ_i7/amazon-ssm-agent.rpm to be installed
Resolving Dependencies
--> Running transaction check
---> Package amazon-ssm-agent.x86_64 0:2.3.479.0-1 will be installed
--> Finished Dependency Resolution

Dependencies Resolved

============================================================================================================================================================================================================
 Package                                             Arch                                      Version                                           Repository                                            Size
============================================================================================================================================================================================================
Installing:
 amazon-ssm-agent                                    x86_64                                    2.3.479.0-1                                       /amazon-ssm-agent                                     60 M

Transaction Summary
============================================================================================================================================================================================================
Install  1 Package

Total size: 60 M
Installed size: 60 M
Downloading packages:
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
  Installing : amazon-ssm-agent-2.3.479.0-1.x86_64                                                                                                                                                      1/1 
Created symlink from /etc/systemd/system/multi-user.target.wants/amazon-ssm-agent.service to /etc/systemd/system/amazon-ssm-agent.service.
  Verifying  : amazon-ssm-agent-2.3.479.0-1.x86_64                                                                                                                                                      1/1 

Installed:
  amazon-ssm-agent.x86_64 0:2.3.479.0-1                                                                                                                                                                     

Complete!

# Checking the status of System Manager

[root@ip-172-31-29-138 ~]# sudo systemctl status amazon-ssm-agent
● amazon-ssm-agent.service - amazon-ssm-agent
   Loaded: loaded (/etc/systemd/system/amazon-ssm-agent.service; enabled; vendor preset: disabled)
   Active: active (running) since Sun 2019-03-17 17:55:48 UTC; 5s ago
 Main PID: 4091 (amazon-ssm-agen)
   CGroup: /system.slice/amazon-ssm-agent.service
           └─4091 /usr/bin/amazon-ssm-agent

Mar 17 17:55:51 ip-172-31-29-138.us-west-2.compute.internal amazon-ssm-agent[4091]: 2019-03-17 17:55:49 INFO [StartupProcessor] Write to serial port: Amazon SSM Agent v2.3.479.0 is running
Mar 17 17:55:51 ip-172-31-29-138.us-west-2.compute.internal amazon-ssm-agent[4091]: 2019-03-17 17:55:49 INFO [StartupProcessor] Write to serial port: OsProductName: CentOS Linux
Mar 17 17:55:51 ip-172-31-29-138.us-west-2.compute.internal amazon-ssm-agent[4091]: 2019-03-17 17:55:49 INFO [StartupProcessor] Write to serial port: OsVersion: 7
Mar 17 17:55:51 ip-172-31-29-138.us-west-2.compute.internal amazon-ssm-agent[4091]: 2019-03-17 17:55:49 INFO [MessageGatewayService] Opening websocket connection to: %!(EXTRA string=wss://ssmm...am=input)
Mar 17 17:55:52 ip-172-31-29-138.us-west-2.compute.internal amazon-ssm-agent[4091]: 2019-03-17 17:55:49 INFO [MessageGatewayService] Successfully opened websocket connection to: %!(EXTRA strin...am=input)
Mar 17 17:55:52 ip-172-31-29-138.us-west-2.compute.internal amazon-ssm-agent[4091]: 2019-03-17 17:55:49 INFO [MessageGatewayService] Starting receiving message from control channel
Mar 17 17:55:52 ip-172-31-29-138.us-west-2.compute.internal amazon-ssm-agent[4091]: 2019-03-17 17:55:49 INFO [MessageGatewayService] Successfully created ssm-user
Mar 17 17:55:52 ip-172-31-29-138.us-west-2.compute.internal amazon-ssm-agent[4091]: 2019-03-17 17:55:49 INFO [MessageGatewayService] Successfully created file /etc/sudoers.d/ssm-agent-users
Mar 17 17:55:52 ip-172-31-29-138.us-west-2.compute.internal amazon-ssm-agent[4091]: 2019-03-17 17:55:49 INFO [MessageGatewayService] Successfully changed mode of /etc/sudoers.d/ssm-agent-users to 288
Mar 17 17:55:52 ip-172-31-29-138.us-west-2.compute.internal amazon-ssm-agent[4091]: 2019-03-17 17:55:49 INFO [MessageGatewayService] [EngineProcessor] Initial processing
Hint: Some lines were ellipsized, use -l to show in full.

# Enabling it so that it will start on reboot
[root@ip-172-31-29-138 ~]# sudo systemctl enable amazon-ssm-agent