1 Reviewing Logfiles
2 Common Mistakes
3 Docker Monitor
4 Configure Passwordless SSH (MacOS)
1 The Pulse Agent writes to its local OS syslog. You can use journalctl to watch the logs in real time and set a unit descriptor to filter only for Pulse activity by issuing the following command
journalctl -u iotc-agent -f
2 Watching the logs in this manner can be helpful when you are triggering some other activity (like working on sending in Pulse System Properties or Metrics via script)
1 ‘Enrollment Failures’ when attempting to onboard Connected Things : Make sure that the Connected Thing is Whitelisted in the Parent Gateway’s Template, otherwise the new Thing will not be allowed to enroll.
1 If you are spinning up new Docker Containers on your Gateway and they are not showing up in Pulse, check for the existence of [containername].container files in the Pulse Agent /data/data directory.
Make sure that there is an ID present within the .container file.
If there is no value, delete (rm) the file and see if DockerMonitor registers the Container and creates a new file (with an ID in it)
2 If Containers are still not showing up in Pulse, stop the Docker Monitor service
service dockermonitor stop
Change into your /opt/dockermonitor directory
Run the dockermonitor.sh script manually and see if you can tell what is happening via the console output:
Configure Passwordless SSH (MacOS)
If you are tired of typing your password every time you SSH to your Gateway, this procedure is for you
1 Verify that you do not already have an existing SSH key present on your laptop/workstation (if you do have keys present like in the screenshot below, skip to step 3 as you do not want to overwrite these)
ls -al ~/.ssh/id_*.pub
2 If you have no key present, generate a new key pair using the following command
ssh-keygen -t rsa -b 4096 -C "firstname.lastname@example.org"
Press Enter to accept the default file location and file name
Enter passphrase (press empty for no passphrase):
3 Copy your Public Key to the Gateway that you want to use Passwordless SSH for using the following command
4 Verify that you can now SSH without having to enter your password