how to solve this warning in PostgreSQL RDS: skipping missing configuration file "/rdsdbdata/config/recovery.conf"

Question

We have been using PostgreSQL RDS v12, and recently upgraded to v15. 
I understand recovery.conf has been merged to postgresql.conf, but in the RDS database log, this warning keeps showing up: skipping missing configuration file "/rdsdbdata/config/recovery.conf"

How can I make this warning go away?

Answer

Hi, Annie Bai

I'm not seeing a solve for this in re:Post or on the internet.  I wonder if the following two ideas could be tested **on a Non Production (ideally, Sandbox) system ONLY - Please DO NOT Run Any of the Following on Production**.

First, ensure you have a backup of /rdsdbdata/config/postgresql.conf.  A backup of the file can be created using the following command.

**Create Backup of file /rdsdbdata/config/postgresql.conf**
```
cp -p /rdsdbdata/config/postgresql.conf /rdsdbdata/config/postgresql.conf.bkp
```

**Step 1 - Create a symbolic link to the new config file name** - this will create a file link (recovery.conf) pointing to postgresql.conf.
```
cd /rdsdbdata/config
ln -s postgresql.conf recovery.conf
```

or

**Step 2 - Create empty file** - you might need to run rm /rdsdbdata/config/recovery.conf first, if you ran Step 1 before this.  The single command below will create an empty recovery.conf file.
```
touch /rdsdbdata/config/recovery.conf
```

If either of the two steps above work in a Sandbox (Non Production) environment, please choose this as the Accepted Answer so others on re:Post may benefit - Thank you

how to solve this warning in PostgreSQL RDS: skipping missing configuration file "/rdsdbdata/config/recovery.conf"

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