my linux system Ubuntu 18.04.5 , SonarQube 9 version , error “SCM provider autodetection failed. Please use “sonar.scm.provider” to define SCM of your project, or disable the SCM Sensor in the project settings”
/opt/sonarqube/conf/sonar.properties
sonar.jdbc.username=sonar
sonar.jdbc.password=password
sonar.jdbc.url=jdbc:postgresql://localhost/sonarqube
sonar.search.javaOpts=-Xmx512m -Xms512m -XX:+HeapDumpOnOutOfMemoryError
########### OPTIONAL USE ONLY #############
#sonar.jdbc.username=sonar
#sonar.jdbc.password=sonar
#sonar.jdbc.url=jdbc:postgresql://localhost/sonarqube
#sonar.web.host=127.0.0.1
#sonar.web.port=9000
#sonar.web.javaAdditionalOpts=-server
#sonar.search.javaOpts=-Xmx512m -Xms512m -XX:+HeapDumpOnOutOfMemoryError
#sonar.log.level=INFO
#sonar.path.logs=logs
###########################################
/opt/sonar-scanner/conf/sonar.properties
#----- Default SonarQube server
sonar.host.url=http://localhost:9000
#sonar.projectKey: key name you gave when you created the project.
sonar.projectKey=test
#----- Default source code encoding
sonar.sourceEncoding=UTF-8
#sonar.sources: path to the project to analyze.
sonar.sources=/home/user/project
#sonar.login: SonarQube authentication token.
sonar.login=630671392ed51eac436cadae1c2b9881b10fd3be
project path >> root@ubuntu:/home/user/project <<
vim /etc/profile
SONAR_RUNNER_HOME=/opt/sonar-scanner/bin
PATH=$SONAR_RUNNER_HOME/bin:$PATH
export SONAR_RUNNER_HOME
export PATH