WebMar 7, 2024 · You can use the Azure portal, Azure CLI, or VM Access Extension for Linux to troubleshoot and resolve connection problems. Quick troubleshooting steps After each troubleshooting step, try reconnecting to the VM. Reset the SSH configuration. Reset the credentials for the user. Verify the network security group rules permit SSH traffic. WebBoot from the Rescatux CD and select the Restore Grub option. This will search for your Linux partitions and ask you to choose the partition that contains the root filesystem of …
Chapter 10. Troubleshooting problems using log files
One of the first steps to troubleshooting is checking a machine’s local IP address, which can be done with the ip address command, again making use of the -br flag to simplify the output: # ip -br address show lo UNKNOWN 127.0.0.1/8 ::1/128 eth0 UP 192.168.122.135/24 fe80::184e:a34d:1d37:441a/64 … See more First, let’s take a moment to review the fundamentals of the TCP/IP network model. While most people use the Open Systems … See more We often take the physical layer for granted ("did you make sure the cable is plugged in?"), but we can easily troubleshoot physical layer problems from the Linux command line. That is if you have console … See more Layer 3 involves working with IP addresses, which should be familiar to any sysadmin. IP addressing provides hosts with a way to reach other hosts that are outside of their local … See more The data link layer is responsible for local network connectivity; essentially, the communication of frames between hosts on the same Layer 2 domain (commonly called a local area … See more WebAug 6, 2024 · To troubleshoot issues using apachectl, test your Apache configuration using the apachectl configtest command. The tool will parse your Apache files and detect any errors or missing settings before attempting to start the server. Run the command like this on Ubuntu, Debian, CentOS, and Fedora based distributions: sudo apachectl configtest the society rooms stalybridge
Troubleshooting a Linux server: First five things to do HPE
WebSep 24, 2024 · One way to fix high CPU usage in Linux is to temporarily suspend its execution. Unlike doing a renice, suspending will immediately release the resources the offending program is currently using. To do this, run kill -STOP followed by the PID of your program. Once you have the resources to run your program, resume by running kill -CONT. WebOne of the simplest methods is to use the command last reboot to parse the /var/log/wtmp file. The output of last reboot displays logins for the “reboot” pseudo user. The “reboot” pseudo user logs in every time a system is rebooted. $ sudo last reboot. reboot system boot 4.18.0-348.el8.0 Mon Jul 4 23:32 still running. WebJun 22, 2024 · Follow these five simple yet practical steps to troubleshoot a Linux server and reduce the downtime to an absolute minimal. 1. Check the Hardware. Let's get down … the society rooms macclesfield