docker/scripts/wait_db.sh

   1 #!/bin/bash
   2
   3 attempt=0
   4 max_attempts=120
   5 while ! mysqladmin ping -h"$DB_HOST" -P"$DB_PORT" --silent; do
   6         #wait 120 sec
   7         if [ $attempt -ge $max_attempts ]; then
   8                 echo "Can not connect to database during $max_attempts sec"
   9                 exit 1
  10         fi
  11         attempt=$[$attempt+1]
  12         echo "Wait for MySQL Server ${DB_HOST}:${DB_PORT} [attempt $attempt/$max_attempts]"
  13     sleep 1
  14 done