Whether you use file-based or streaming replication as the transport mechanism, managing a log shipping replication cluster is in many ways very similar.
Discussion here assumes you have already set up file-based log shipping, streaming replication, or both.
Monitoring of log shipping is essential. You'll find it best to enable Hot Standby mode, as the information is both easier to obtain and more accurate if you do.
Repmgr and pgpool both provide replication monitoring facilities. Munin plugins are available for graphing replication and apply delay.
You may wish to calculate the delays yourself. To do that, we request current values from Master and Standby, and then compare the ...