To update the public signing key used to upgrade or install a new agent from packages.lacework.net see the below steps.
DEB/ubuntu based distros
Download and install the new public signing key.
$ sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys EE0CC692
YUM/RPM based distros YUM Installation
Yum will take care of importing the new key, however you will have to Accept the new key interactively.
If you are utilizing any configuration management tools (e.g. Puppet, Chef, or Ansible) to manage your deployment and have yum update running periodically (or manually) you will need to follow the below one time commands after accepting the new key to have Lacework Agent restarted and running again;
$ systemctl daemon-reload
$ systemctl enable datacollector
$ systemctl start datacollector
These commands need to be run just once.