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Tomcat by default listens on http port 8000. Follow these instructions to change Tomcat to listen on an https port.

  1. Stop the Tomcat server.

    <FlexDeploy Home>/StopFlexDeploy.sh


  2. Create a Java Key Store to hold your SSL Certificate. You will need to update location to JDK, alias, and give appropriate path for the keystore location.

    /u01/java/jdk1.8.0_281/bin/keytool -genkey -alias mykeystorealias -keyalg RSA -keystore /home/oracle/flexdeploy.keystore


  3. Import your SSL certificate. You will need to adjust the JDK location, the keystore name, alias name, and the certificate file name.

    Notice

    When you are importing the SSL certificate, the certificate alias must be different than the keystore alias. Otherwise, you will see the below error:

    keytool error: java.lang.Exception: Public keys in reply and keystore don't match

    /u01/java/jdk1.8.0_281/bin/keytool -import -alias myalias -file mycert.cer -keystore /home/oracle/flexdeploy.keystore


    To generate a self-signed certificate and import into the keystore, issue the following command, adjusting the paths and parameters as necessary.

    /u01/java/jdk1.8.0/bin/keytool -genkeypair -alias myalias -keyalg RSA -validity 365 -keysize 2048 -keystore /home/oracle/flexdeploy.keystore

  4. Edit <FlexDeploy Home>/apache-tomcat-flexdeploy/conf/server.xml. Modify the HTTP connector that is listening on port 80 as follows to listen on some port (not 443). Be sure to adjust keystore file path.

    <Connector port="8443" protocol="HTTP/1.1" sslVerifyClient="optional" sslEnabledProtocols="TLSv1.2,TLSv1.1,SSLv2Hello"
               connectionTimeout="20000" maxThreads="200" SSLEnabled="true" secure="true"
               maxHttpHeaderSize="16384" schema="https" keystoreFile="/home/oracle/flexdeploy.keystore"
               keystorePass="changeit" clientAuth="false" sslProtocol="TLS"/>


    On Unix, privileged ports (less than 1024) cannot be opened by a non-root user. The solution is to forward traffic from 443 to the port used above (8443). As root, update iptable rule to redirect the traffic from 443 to 8443.

    iptables -t nat -I PREROUTING -p tcp --destination-port 443 -j REDIRECT --to-ports 8443


  5. Start the Tomcat server.

    <FlexDeploy Home>/StopFlexDeploy.sh


  6. Test in browser.

    https://<your.hostname>/flexdeploy

    New to Certificates and the keytool utility? Reference this cheat sheet for assistance.

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