How do I troubleshoot slow performance when navigating my AppDynamics Controller UI from a browser? This article provides a starting point for self-service troubleshooting of slow Controller performance. A controller is deemed slow when navigating its UI from a browser there is a tangible slowness for the pages or dashboards etc. to load. NOTE: The scope of this article extends to demo, small, medium and large profile Controllers. For extra-large Controllers, we recommend that customers start by contacting the AppDynamics Professional Services team who set up their extra-large Controller first. AppD Support can also provide assistance in such matters. Table of Contents How are your Controller’s specs configured? How is your memory allocated? Optimum recommendations for Glassfish appserver and MySQL dB for ideal performance How are your Controller’s specs configured? We encourage customers to abide by the published Controller server hardware specs, irrespective of the Controller’s profile. Be sure to maintain a swap space of 10-20 Gb configured on your server. See Controller System Requirements documentation. How is your memory allocated to Glassfish, MySQL and OS? It’s quite possible that the GlassFish application server is starving for memory. Be sure to give it its adequate share. However, also be sure that MySQL has its own share of system resources. Last but not least, the server itself is the third contender for system resources. The GlassFish heap and MySQL buffer pool should all start at around 1/3 of total memory to permit growth. MySQL will occupy more when it’s busy, and GlassFish’s total RAM can grow to over double its heap allocation.    Optimum recommendations for Glassfish appserver and MySQL dB for ideal performance The following tables show optimum recommendations for different Controller profiles in both on-premises and EC2-RDS Aurora environments. Demo Controller profile memory recommendations Small Controller profile memory recommendations Medium Controller profile memory recommendations Large Controller profile memory recommendations CONTROLLER PROFILE: Demo COMPUTE: Cores, RAM CHANGES: JVM, HTTP-Thread-Pool, MySQL SUPPORTS AMAZON AuroraDB 2 cores, 8Gb RAM Changes in domain.xml for JVM parameters <jvm-options>-Xmx2667m</jvm-options> <jvm-options>-Xms2667m</jvm-options> <jvm-options>-Xmn889m</jvm-options> Changes required in domain.xml for http-thread-pool <thread-pool max-thread-pool-size="24" min-thread-pool-size="24" max-queue-size="-1" name="http-thread-pool"/> MySQL changes in db.cnf innodb_buffer_pool_size=2667M NO Recommendations Top | Table of Contents | Resources CONTROLLER PROFILE: Small COMPUTE: Cores, RAM CHANGES: JVM, HTTP-Thread-Pool, MySQL SUPPORTS AMAZON AuroraDB 4 cores, 16Gb RAM Changes in domain.xml for JVM parameters <jvm-options>-Xmx5461m</jvm-options> <jvm-options>-Xms5461m</jvm-options> <jvm-options>-Xmn1820m</jvm-options> Changes required in domain.xml for http-thread-pool <thread-pool max-thread-pool-size="48" min-thread-pool-size="48" max-queue-size="-1" name="http-thread-pool"/> MySQL changes in db.cnf  innodb_buffer_pool_size=5461M   NO Recommendations Top | Table of Contents | Resources CONTROLLER PROFILE: Medium  COMPUTE: Cores, RAM CHANGES: JVM, HTTP-Thread-Pool, MySQL SUPPORTS AMAZON AuroraDB Bare-metal: 8 Cores, 128GB RAM Changes in domain.xml for JVM parameters        <jvm-options>-Xmx43690m</jvm-options> <jvm-options>-Xms43690m</jvm-options> <jvm-options>-Xmn14563m</jvm-options>   Changes required in domain.xml for http-thread-pool <thread-pool max-thread-pool-size="96" min-thread-pool-size="96" max-queue-size="-1" name="http-thread-pool"/>   MySQLchanges in db.cnf innodb_buffer_pool_size=43690M   YES VM: 16 vCPUs, 128GB RAM Changes in domain.xml for JVM parameters <jvm-options>-Xmx43690m</jvm-options> <jvm-options>-Xms43690m</jvm-options> <jvm-options>-Xmn14563m</jvm-options>   Changes required in domain.xml for http-thread-pool <thread-pool max-thread-pool-size="128" min-thread-pool-size="128" max-queue-size="-1" name="http-thread-pool"/>   MySQLchanges in db.cnf  innodb_buffer_pool_size=43690M   YES Recommendations Top | Table of Contents | Resources CONTROLLER PROFILE: Large  COMPUTE: Cores, RAM CHANGES: JVM, HTTP-Thread-Pool, MySQL SUPPORTS AMAZON AuroraDB Bare-metal: 28 Cores, 512GB RAM Changes in domain.xml for JVM parameters <jvm-options>-Xmx174763m</jvm-options> <jvm-options>-Xms174763m</jvm-options> <jvm-options>-Xmn58254m</jvm-options> Changes required in domain.xml for http-thread-pool <thread-pool max-thread-pool-size="336" min-thread-pool-size="336" max-queue-size="-1" name="http-thread-pool"/> Mysql changes in db.cnf innodb_buffer_pool_size=174763M   YES VM: Not recommended Changes in domain.xml for JVM parameters <jvm-options>-Xmx43690m</jvm-options> <jvm-options>-Xms43690m</jvm-options>  <jvm-options>-Xmn14563m</jvm-options>   Changes required in domain.xml for http-thread-pool <thread-pool max-thread-pool-size="8 x vCPUs" min-thread-pool-size="8 x vCPUs" max-queue-size="-1" name="http-thread-pool"/>   MySQLchanges in db.cnf  innodb_buffer_pool_size=43690M   YES Recommendations Top | Table of Contents | Resources What are my next steps? If the performance issue persists, please contact AppDynamics Support. Additional Resources Learn more in the Oracle Java documentation: To read about xmx, xms and xmn, refer to: https://docs.oracle.com/javase/8/docs/technotes/tools/windows/java.html  To read about thread pool, refer to: https://docs.oracle.com/cd/E18930_01/html/821-2431/abehk.html To read about max-queue-size, refer to: https://docs.oracle.com/cd/E19226-01/820-7694/abhfa/index.html ... View more

How do I troubleshoot when I can’t access the Enterprise Console user interface? This article outlines the initial troubleshooting steps to take when you can’t access your Enterprise Console's user interface.  Table of Contents Troubleshooting steps when you can't access the Enterprise Console UI Next: What if the above steps don't uncover the cause? Additional resources  Troubleshooting steps when you can't access the Enterprise Console UI The following are the troubleshooting steps AppDynamics Support Engineers start with, but customers can certainly self-test using the same process. Explore the below files for errors: <platform>/platform-admin/logs/platform-admin-server.log <platform>/mysql/logs/database.log Were any changes to the EC configuration file made recently? /opt/appdynamics/platform/platform-admin/conf/PlatformAdminApplication.yml​ Was the EC installed with HTTPS enabled? If so, try accessing the EC using https instead of http on port 9191. On the EC host, verify whether the EC is running. ps -ef | grep mysql ps -ef | grep java netstat -anp | grep 9191​ Skip this step if the server in question is not in AWS: If your Enterprise Console host is running on an EC2 instance in AWS, and the public hostname changed as a result of reboot, then validate from either AWS console or AWS CLI. This could be the case if the EIP was not attached on the EC2 instance. What is the result after executing the below commands? curl -v http://<ec_host>:9191/service/version curl -v https://<ec_host>:9191/service/version cat /etc/hosts ping -c1 $(hostname)​ If I don’t uncover the cause with this trouble-shooting, what are the next steps? If you complete the preceding steps and the results were all positive, with no issues observed, then the network that connects your workstation and the Enterprise Console needs an in-house inspection from your network or Unix team. It will help continued troubleshooting if you capture some additional detail by executing the following commands to stop and then start the EC using bash -x. <platform-admin>/bin/platform-admin.sh stop-platform-admin bash -x <platform-admin>/bin/platform-admin.sh start-platform-admin Points to note: The list of steps mentioned in this article are starting points for AppD Support Engineers and Customers in order to troubleshoot this issue. The majority of the time, such issues are not understood to be critical in nature: hence, should you seek assistance from AppD Support, the recommended ticket priority would be low or normal. Additional Resources FAQs for the Enterprise Console documentation ... View more