The Mezmo Agent for mac collects log data from your mac environment. The agent is available on brew.
run: brew install mezmo-agent
The installation process will also configure launchctl so you can run the agent via sudo launchctl load -w /Library/LaunchDaemons/com.logdna.logdna-agent.plist
Configuration can be done via /tc/lognda.config file or setting environment variables - MEZMO_INGESTION_KEY and LOGDNA_HOST must be set.
For a clean upgrade brew uninstall the old macOS LogDNA and modify the /etc/logdna.config file's logdir from /var/log into /private/var/log