Simple app that checks if PostgreSQL database is ready or not.
wget https://github.com/mxssl/wait-for-pg/releases/download/v1.0.0/wait-for-pg-linux-amd64.tar.gz
tar xvzf wait-for-pg-linux-amd64.tar.gz
cp wait-for-pg /usr/local/bin/wait-for-pg
chmod +x /usr/local/bin/wait-for-pg
wait-for-pg check \
--host postgres.domain.com \
--port 5432 \
--user pguser \
--password pgpass \
--dbname dbname \
--sslmode disable \
--retry 10 \
--sleep 2docker container \
run \
--rm \
mxssl/wait-for-pg:v1.0.0 \
wait-for-pg check \
--host postgres.domain.com \
--port 5432 \
--user pguser \
--password pgpass \
--dbname dbname \
--sslmode disable \
--retry 10 \
--sleep 2- If PG is ready then app returns exit code 0
- If PG isn't ready then app returns exit code 1