Fix Telemetry Service SQL Server pipeline flaky test (#734)

* change tag to 2022-RTM-GDR1-ubuntu-20.04

* modified users

* add docker health check

* use docker health check for mysql

azure-pipelines/azure-pipelines.yml

@@ -384,13 +384,16 @@ stages:
         displayName: docker run tdengine and checkoutput
       - script: |
           set -e
-          docker run -itd --network host --name mysql -e MYSQL_ALLOW_EMPTY_PASSWORD=yes mysql:8.1.0
+          docker run -itd --network host --name mysql -e MYSQL_ALLOW_EMPTY_PASSWORD=yes \
+            --health-cmd='mysqladmin ping -h localhost -uroot' --health-interval=5s --health-timeout=5s --health-retries=20 \
+            mysql:8.1.0
           bash $(System.DefaultWorkingDirectory)/examples/telemetryservice/mysql/checkoutput.sh
         displayName: docker run mysql and checkoutput
       - script: |
           set -e
           docker run -itd --network host --name sqlserver -e ACCEPT_EULA=Y -e SA_PASSWORD=Some_Strong_Password \
-            mcr.microsoft.com/mssql/server:2022-CU7-ubuntu-20.04
+            --health-cmd="/opt/mssql-tools/bin/sqlcmd -U sa -P Some_Strong_Password -Q 'select name from sys.databases'" --health-interval=5s --health-timeout=5s --health-retries=20 \
+            mcr.microsoft.com/mssql/server:2022-CU7-ubuntu-20.04	
           bash $(System.DefaultWorkingDirectory)/examples/telemetryservice/sqlserver/checkoutput.sh
         displayName: docker run sqlserver and checkoutput
 

examples/telemetryservice/mysql/checkoutput.sh

@@ -1,19 +1,10 @@
 #!/bin/bash
 MySQLOutput=2
-sleep 3
-for i in {1..50}
-do
-    output=$(docker exec mysql mysql -u root -e "Show databases;" 2>&1 | grep 'ERROR' | wc -l)
-    #echo $output
-    if [[ $output -eq 0 ]]
-    then
-        echo $output
-        break
-    elif [[ $i -eq 50 ]]
-    then
-        exit 1
-    fi
+echo "Waiting for MySQL to be ready..."
+while [[ "$(docker inspect --format='{{.State.Health.Status}}' mysql)" != "healthy" ]]; do
+  sleep 5
 done
+echo "MySQL is ready."
 
 # init MySQL Table
 docker exec mysql mysql -u root \

examples/telemetryservice/sqlserver/checkoutput.sh

@@ -1,29 +1,19 @@
 #!bin/bash
 SQLServerOutput=2
-sleep 6
-for i in {1..50}
-do
-    output=$(docker exec sqlserver /opt/mssql-tools/bin/sqlcmd  \
-    -S localhost -U sa -P Some_Strong_Password \
-    -Q "select name from sys.databases" | grep 'Error' | wc -l)
-    echo $output
-    if [[ $output -eq 0 ]]
-    then
-        break
-    elif [[ $i -eq 50 ]]
-    then
-        exit 1
-    fi
+echo "Waiting for SQL Server to be ready..."
+while [[ "$(docker inspect --format='{{.State.Health.Status}}' sqlserver)" != "healthy" ]]; do
+  sleep 5
 done
+echo "SQL Server is ready."
 
 # init SQLServer Table
-docker exec sqlserver /opt/mssql-tools/bin/sqlcmd -S localhost -U SA -P Some_Strong_Password \
+docker exec sqlserver /opt/mssql-tools/bin/sqlcmd -S localhost -U sa -P Some_Strong_Password \
     -Q "Create database shifu;"
 
-docker exec sqlserver /opt/mssql-tools/bin/sqlcmd -S localhost -U SA -P Some_Strong_Password \
+docker exec sqlserver /opt/mssql-tools/bin/sqlcmd -S localhost -U sa -P Some_Strong_Password \
     -d shifu -Q "CREATE TABLE testTable ( TelemetryID INT IDENTITY(1,1) PRIMARY KEY, DeviceName VARCHAR(255), TelemetryData TEXT, TelemetryTimeStamp DATETIME );"
 
-docker exec sqlserver /opt/mssql-tools/bin/sqlcmd -S localhost -U SA -P Some_Strong_Password \
+docker exec sqlserver /opt/mssql-tools/bin/sqlcmd -S localhost -U sa -P Some_Strong_Password \
     -d shifu -Q "Select * from shifu.dbo.testTable;"
 
 for i in {1..30}