Can existing connections be dropped or do they need to stay established? Also, are you trying to switch the database to a read-only mode for backup purposes or something different? On 14.06.2018 12:46, Debraj Manna wrote: > Hi > > In a 3 node cluster with 1 master and 2 slaves with postgres 10.4 is there > any configuration setting that will stop all writes to the master from the > client. But the clients can read data from master and other slaves ? > > Thanks, >