EX342 14. Authentication Issues -EX342 Disclaimer:These are my notes following my self-study on troubleshooting . No material comes from either Red Hat course or the Red Hat exam. You will not find any NDA information here. All contents are my own thoughts/understanding on the subject matter. Identify and fix authentication issues Identify and fix
Linux Certifications 12. General Troubleshooting Summary Notes and Important Commands-EX342 This section is collected from different sources across the internet and during my study and research of this exam.
RHCS in Linux Diagnostics and Troubleshooting exam 11. Security Issues Troubleshooting-EX342 Disclaimer:These are my notes following my self-study on troubleshooting . No material comes from either Red Hat course or the Red Hat exam. You will not find any NDA information here. All contents are my own thoughts/understanding on the subject matter.
RHCS in Linux Diagnostics and Troubleshooting exam 10. Kernel Issues Troubleshooting-EX342 Gather information to aid third party investigation of issues Create kernel crashdumps Compile and execute SystemTap modulesGenerally speaking to compile a stap module there are different examples on the web you can download to test. stap -v stapexample.stp Generate sos reportsAccording to the Linux man page sosreport is used
RHCS in Linux Diagnostics and Troubleshooting exam 9. Application Issues troubleshooting-EX342 Disclaimer:These are my notes following my self-study on troubleshooting . No material comes from either Red Hat course or the Red Hat exam. You will not find any NDA information here. All contents are my own thoughts/understanding on the subject matter. Identify library dependencies for third-party software Identify if
RHCS in Linux Diagnostics and Troubleshooting exam 7. Network Issues Troubleshooting-EX342 Disclaimer:These are my notes following my self-study on troubleshooting . No material comes from either Red Hat course or the Red Hat exam. You will not find any NDA information here. All contents are my own thoughts/understanding on the subject matter.
RHCS in Linux Diagnostics and Troubleshooting exam 5. Storage Issues Troubleshooting-EX342 According to the exam objectives you will need to be able to identify issues with storage and fix them. The following are the objectives of this section : Diagnose and troubleshoot file system issues Recover corrupted file systemsWe will be testing this on our virtual server. First : Lets prepare our disks
RHCS in Linux Diagnostics and Troubleshooting exam 4. Boot Issues Troubleshooting-EX342 Disclaimer:These are my notes following my self-study on troubleshooting . No material comes from either Red Hat course or the Red Hat exam. You will not find any NDA information here. All contents are my own thoughts/understanding on the subject matter.
RHCS in Linux Diagnostics and Troubleshooting exam 3. Introduction to troubleshooting-EX342 Monitor Systems for vital characteristics Configure Systems to send log messages to centralized log host(server) First make sure rsyslog is installed on both servers SERVE 1 >> logs --------------------------—> SERVER2 On server 1 Edit rsyslog.conf
RHCS in Linux Diagnostics and Troubleshooting exam Diagnose & troubleshoot system start up issues-EX342 Identify and resolve service failures affecting bootto find service dependencies you can view the service systemd file at /etc/systemd/system/ check the configs file systemctl status -l vsftpd 2. check all configurations related to a service 3. List dependencies sysemctl list-dependencies rsyslog Regain root control of a systemYou will
Linux Certifications Understanding the Problem: System Information Collection-EX342 In order to troubleshoot the problem you will have to understand it by collecting as much information as possible on the who and where and what. There are different tools available at your disposal to do that on the Linux system such as : SYSTEM JOURNAL Enabling SYSTEM JOURNAL Logs persistence
RHEL7 1. About RHCS in Linux Diagnostics and Troubleshooting-EX342 Disclaimer:These are my notes following my self-study on troubleshooting . No material comes from either Red Hat course or the Red Hat exam. You will not find any NDA information here. All contents are my own thoughts/understanding on the subject matter. Red Hat Website listed the objectives outlines as
Linux Certifications 2. Troubleshooting Exam Lab Setup-EX342 You will need two servers for testing. Use your favorite virtualization software i.e.(VMware or VirtualBox).