(20210316已解决)postgresql cannot execute CREATE TABLE in a read-only transation

• Overview

  As mentioned above, the above error occurred when creating a database in a postgresql docker container.

• Solution

  Normally the most plausible reasons for this kinde of error are:

  1. trying create statements on a read-only replica (the entire instance is read-only)
  2. <username> has default_transaction_read_only set to NO
  3. the database has default_transaction_read_only set to NO

  My situation is the first one. So, create a new container.

• Reference

1. ERROR: cannot execute CREATE TABLE in a read-only transaction