diff --git a/airflow/bin/cli.py b/airflow/bin/cli.py
index c7f1e39adf1b48..26dc25d2c45318 100644
--- a/airflow/bin/cli.py
+++ b/airflow/bin/cli.py
@@ -837,6 +837,12 @@ class CLIFactory:
             'help': "Runs a shell to access the database",
             'args': tuple(),
         },
+        {
+            'func': lazy_load_command('airflow.cli.commands.db_command.check'),
+            'name': 'check',
+            'help': "Check if the database can be reached.",
+            'args': tuple(),
+        },
     )
     CONNECTIONS_COMMANDS = (
         {
diff --git a/airflow/cli/commands/db_command.py b/airflow/cli/commands/db_command.py
index a0714bf31c03ea..034bd88cbe4fe8 100644
--- a/airflow/cli/commands/db_command.py
+++ b/airflow/cli/commands/db_command.py
@@ -81,3 +81,9 @@ def shell(args):
         subprocess.Popen(["psql"], env=env).wait()
     else:
         raise AirflowException(f"Unknown driver: {url.drivername}")
+
+
+@cli_utils.action_logging
+def check(_):
+    """Runs a check command that checks if db is available."""
+    db.check()
diff --git a/airflow/utils/db.py b/airflow/utils/db.py
index 78185cb18a922a..1d559acf103774 100644
--- a/airflow/utils/db.py
+++ b/airflow/utils/db.py
@@ -501,3 +501,13 @@ def resetdb():
     Base.metadata.drop_all(connection)  # pylint: disable=no-member
 
     initdb()
+
+
+@provide_session
+def check(session=None):
+    """
+    Checks if the database works.
+    :param session: session of the sqlalchemy
+    """
+    session.execute('select 1 as is_alive;')
+    log.info("Connection successful.")
diff --git a/scripts/ci/in_container/check_environment.sh b/scripts/ci/in_container/check_environment.sh
new file mode 100755
index 00000000000000..f4d297cea4327a
--- /dev/null
+++ b/scripts/ci/in_container/check_environment.sh
@@ -0,0 +1,238 @@
+#!/usr/bin/env bash
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+
+# Script to check licences for all code. Can be started from any working directory
+set -euo pipefail
+
+MY_DIR=$(cd "$(dirname "$0")" || exit 1; pwd)
+
+# shellcheck source=scripts/ci/in_container/_in_container_utils.sh
+. "${MY_DIR}/_in_container_utils.sh"
+
+in_container_basic_sanity_check
+
+in_container_script_start
+
+
+function on_exit() {
+    #shellcheck disable=2181
+    EXIT_CODE=$?
+    if [[ ${EXIT_CODE} != 0 ]]; then
+        echo "###########################################################################################"
+        echo "                   EXITING WITH STATUS CODE ${EXIT_CODE}"
+        echo "###########################################################################################"
+        echo "  Docker processes:"
+        echo "###########################################################################################"
+        docker ps --no-trunc
+        echo "###########################################################################################"
+        for CONTAINER in $(docker ps -qa)
+        do
+            CONTAINER_NAME=$(docker inspect --format "{{.Name}}" "${CONTAINER}")
+            echo "-------------------------------------------------------------------------------------------"
+            echo " Docker inspect: ${CONTAINER_NAME}"
+            echo "-------------------------------------------------------------------------------------------"
+            echo
+            docker inspect "${CONTAINER}"
+            echo
+            echo "-------------------------------------------------------------------------------------------"
+            echo " Docker logs: ${CONTAINER_NAME}"
+            echo "-------------------------------------------------------------------------------------------"
+            echo
+            docker logs "${CONTAINER}"
+            echo
+            echo "###########################################################################################"
+        done
+    fi
+}
+
+export EXIT_CODE=0
+
+function check_integration {
+    INTEGRATION_NAME=$1
+    CALL=$2
+    MAX_CHECK=${3:=1}
+
+    echo "==============================================================================================="
+    echo "             Checking integration ${INTEGRATION_NAME}"
+    echo "==============================================================================================="
+
+    ENV_VAR_NAME=INTEGRATION_${INTEGRATION_NAME^^}
+    if [[ ${!ENV_VAR_NAME:=} != "true" ]]; then
+        echo "             Integration ${INTEGRATION_NAME} disabled. Not checking"
+        echo "==============================================================================================="
+        return
+    fi
+
+    while true
+    do
+        echo "Executing: ${CALL}"
+        echo "-----------------------------------------------------------------------------------------------"
+        set +e
+        eval "${CALL}"
+        RES=$?
+        set -e
+        echo "-----------------------------------------------------------------------------------------------"
+        if [[ ${RES} == 0 ]]; then
+            echo "             Integration ${INTEGRATION_NAME} OK!"
+            break
+        else
+            echo "             ${INTEGRATION_NAME} is not yet ready -> exit code ${RES}"
+            MAX_CHECK=$((MAX_CHECK-1))
+        fi
+        if [[ ${MAX_CHECK} == 0 ]]; then
+            echo
+            echo "ERROR! Maximum number of retries while checking ${INTEGRATION_NAME} integration. Exiting"
+            echo
+            break
+        else
+            echo
+            echo "Sleeping! ${MAX_CHECK} retries left!"
+            echo
+            sleep 1
+        fi
+    done
+    if [[ ${RES} != 0 ]]; then
+        echo "        ERROR: Integration ${INTEGRATION_NAME} could not be started!"
+        export EXIT_CODE=${RES}
+    fi
+    echo "==============================================================================================="
+}
+
+trap on_exit EXIT
+echo
+echo "Check CI environment sanity!"
+echo
+
+export EXIT_CODE=0
+
+if [[ -n ${BACKEND:=} ]]; then
+    echo "==============================================================================================="
+    echo "             Checking backend: ${BACKEND}"
+    echo "==============================================================================================="
+
+    set +e
+    if [[ ${BACKEND} == "mysql" ]]; then
+        # Wait until mysql is ready!
+        MYSQL_CONTAINER=$(docker ps -qf "name=mysql")
+        echo "MySQL container: ${MYSQL_CONTAINER}"
+        if [[ -z ${MYSQL_CONTAINER} ]]; then
+            echo
+            echo "ERROR! MYSQL container is not started. Exiting!"
+            echo
+            exit 1
+        fi
+        MAX_CHECK=60
+        while true
+        do
+            echo
+            echo "Checking if MySQL is ready for connections"
+            CONNECTION_READY_MESSAGES=$(docker logs "${MYSQL_CONTAINER}" 2>&1 | \
+                grep -c "mysqld: ready for connections" )
+            # MySQL when starting from dockerfile starts a temporary server first because it
+            # starts with an empty database first and it will create the airflow database and then
+            # it will start a second server to serve this newly created database
+            # That's why we should wait until docker logs contain "ready for connections" twice
+            # more info: https://github.com/docker-library/mysql/issues/527
+            if [[ ${CONNECTION_READY_MESSAGES} == 2 ]];
+            then
+                echo
+                echo "MySQL is ready for connections!"
+                echo
+                break
+            else
+                echo
+                echo "Number of 'ready for connections' in MySQL logs: ${CONNECTION_READY_MESSAGES}"
+                echo
+            fi
+            MAX_CHECK=$((MAX_CHECK-1))
+            if [[ ${MAX_CHECK} == 0 ]]; then
+                echo
+                echo "ERROR! Maximum number of retries while waiting for MySQL. Exiting"
+                echo
+                exit 1
+            else
+                echo
+                echo "Sleeping! ${MAX_CHECK} retries left!"
+                echo
+                sleep 1
+            fi
+        done
+    fi
+
+    MAX_CHECK=3
+    while true
+    do
+        AIRFLOW__CORE__LOGGING_LEVEL=error airflow db check
+        RES=$?
+        if [[ ${RES} == 0 ]]; then
+            break
+        fi
+        MAX_CHECK=$((MAX_CHECK-1))
+        if [[ ${MAX_CHECK} == 0 ]]; then
+            echo
+            echo "ERROR! Maximum number of retries while connecting to DB. Exiting"
+            echo
+            exit 1
+        else
+            echo
+            echo "Sleeping! ${MAX_CHECK} retries left!"
+            echo
+            sleep 1
+        fi
+    done
+    set -e
+else
+    echo "==============================================================================================="
+    echo "             Skip checking backend - BACKEND not set"
+    echo "==============================================================================================="
+    if [[ ${RES} == 0 ]]; then
+        echo "-----------------------------------------------------------------------------------------------"
+        echo
+        echo "Backend database is sane"
+        echo
+        echo "-----------------------------------------------------------------------------------------------"
+    else
+        echo "-----------------------------------------------------------------------------------------------"
+        echo
+        echo "Error when checking backend database"
+        echo
+        echo "-----------------------------------------------------------------------------------------------"
+    fi
+    export EXIT_CODE=${RES}
+fi
+
+
+check_integration kerberos "kinit -Vkt '${KRB5_KTNAME:=}' airflow" 30
+check_integration mongo "nc -zvv mongo 27017" 20
+check_integration redis "nc -zvv redis 6379" 20
+check_integration rabbitmq "nc -zvv rabbitmq 5672" 20
+check_integration cassandra "nc -zvv cassandra 9042" 20
+check_integration openldap "nc -zvv openldap 389" 20
+
+if [[ ${EXIT_CODE} != 0 ]]; then
+    echo
+    echo "CI environment is not sane!"
+    echo
+    exit ${EXIT_CODE}
+fi
+
+echo
+echo "CI environment is sane!"
+echo
+
+in_container_script_end
diff --git a/scripts/ci/in_container/entrypoint_ci.sh b/scripts/ci/in_container/entrypoint_ci.sh
index 24ffb0bdce8a8c..181a5070fb6aa1 100755
--- a/scripts/ci/in_container/entrypoint_ci.sh
+++ b/scripts/ci/in_container/entrypoint_ci.sh
@@ -223,6 +223,8 @@ set -u
 
 KUBERNETES_VERSION=${KUBERNETES_VERSION:=""}
 
+"${MY_DIR}/check_environment.sh"
+
 if [[ "${TRAVIS}" == "true" ]]; then
     CI_ARGS=(
         "--verbosity=0"