Add environment variable to skip mysqld start when only initialize data

percona-server.56/README.md

@@ -70,6 +70,10 @@ Do note that there is no need to use this mechanism to create the `root` superus
 
 Set to `yes` to allow the container to be started with a blank password for the root user. **NOTE:** Setting this variable to `yes` is not recommended unless you really know what you are doing, since this will leave your instance completely unprotected, allowing anyone to gain complete superuser access.
 
+## `MYSQL_INIT_ONLY`
+
+Set to `1` will skip starting the `mysqld` process and will run only the initialization part if MySQL was not initialized before.
+
 # Notes, Tips, Gotchas
 
 ## Secure Container Startup

percona-server.56/ps-entry.sh

@@ -207,6 +207,12 @@ if [ "$1" = 'mysqld' -a -z "$wantHelp" ]; then
 		echo 'MySQL init process done. Ready for start up.'
 		echo
 	fi
+
+  # exit when MYSQL_INIT_ONLY environment variable is set to avoid starting mysqld
+  if [ ! -z "$MYSQL_INIT_ONLY" ]; then
+      echo 'Initialization complete, now exiting!'
+      exit 0
+  fi
 fi
 
 exec "$@"

percona-server.57/README.md

@@ -82,6 +82,10 @@ Set to `1` to allow the container to be started with enabled TOKUDB engine.
 
 Set to `1` to allow the container to be started with enabled ROCKSDB engine.
 
+## `MYSQL_INIT_ONLY`
+
+Set to `1` will skip starting the `mysqld` process and will run only the initialization part if MySQL was not initialized before.
+
 # Notes, Tips, Gotchas
 
 ## Secure Container Startup

percona-server.57/ps-entry.sh

@@ -216,6 +216,12 @@ if [ "$1" = 'mysqld' -a -z "$wantHelp" ]; then
 		echo 'MySQL init process done. Ready for start up.'
 		echo
 	fi
+
+  # exit when MYSQL_INIT_ONLY environment variable is set to avoid starting mysqld
+  if [ ! -z "$MYSQL_INIT_ONLY" ]; then
+      echo 'Initialization complete, now exiting!'
+      exit 0
+  fi
 fi
 
 exec "$@"

percona-server.80/README.md

@@ -82,6 +82,10 @@ Set to `1` to allow the container to be started with enabled TOKUDB engine.
 
 Set to `1` to allow the container to be started with enabled ROCKSDB engine.
 
+## `MYSQL_INIT_ONLY`
+
+Set to `1` will skip starting the `mysqld` process and will run only the initialization part if MySQL was not initialized before.
+
 # Notes, Tips, Gotchas
 
 ## Secure Container Startup

percona-server.80/ps-entry.sh

@@ -216,6 +216,12 @@ if [ "$1" = 'mysqld' -a -z "$wantHelp" ]; then
 		echo 'MySQL init process done. Ready for start up.'
 		echo
 	fi
+
+  # exit when MYSQL_INIT_ONLY environment variable is set to avoid starting mysqld
+  if [ ! -z "$MYSQL_INIT_ONLY" ]; then
+      echo 'Initialization complete, now exiting!'
+      exit 0
+  fi
 fi
 
 exec "$@"