Configuring syslog settings on an ESXi host
Booting your ESXi from SD or USB flash storage is a common scenario. However, when booting from SD and USB, ESXi does not use that storage for logging. Instead, it keeps the logs in memory, which is nonpersistent. Now that you have established a shared, persistent storage, you can point the ESXi hosts syslog functions to store the logs onto the shared disk so that it can survive a reboot or help you to troubleshoot. Even hosts booting from a local spinning disk might want to redirect their syslog onto a shared SAN drive so that it's accessible from another hosts if one of the hosts fails.
Another common use in enterprises is a centralized syslog server or a third-party log collection and analytics service, ...
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