June 28, 2021 in Technology, Tips and Tricks
Detach and fix the volume of the problem instance using another instance Launch a new instance (recovery instance). Stop the original instance (DO NOT TERMINATE) Detach the volume (problem volume) from the original instance Attached it to the recovery instance as /dev/sdf. Login to the recovery instance via ssh/putty Run sudo lsblk to display attached volumes and […]
June 28, 2021 in Php, Tips and Tricks, Ubuntu
June 28, 2021 in Technology, Tips and Tricks, Ubuntu
Yes you can delete everything inside of /var/log/journal/* but do not delete the directory itself. You can also query journalctl to find out how much disk space it’s consuming: You can control the size of this directory using this parameter in your /etc/systemd/journald.conf: You can force a log rotation: NOTE: You might need to restart the logging service to force a […]
June 28, 2021 in Learning, Technology, Tips and Tricks, Ubuntu
what is journal in ubuntu Many modern file systems employ a journal including NTFS, Ext3/4, XFS, HFS+, and others. The journal helps with two things, avoiding file system corruption and speeding up recovery after a failure such as a power loss or system crash. There are two major components to a file system, the data […]
June 28, 2021 in MySql, Tips and Tricks, Ubuntu
Delete all of /var/log? If you delete everything in /var/log, you will most likely end up with tons of error messages in very little time, since there are folders in there which are expected to exist (e.g. exim4, apache2, apt, cups, mysql, samba and more). Plus: there are some services or applications that will not […]
June 28, 2021 in Tips and Tricks, Ubuntu
Postfix is the default Mail Transfer Agent (MTA) in Ubuntu. It attempts to be fast and secure, with flexibility in administration. It is compatible with the MTA sendmail. This section will explain installation, including how to configure SMTP for secure communications. Note This guide does not cover setting up Postfix Virtual Domains, for information on Virtual […]
June 28, 2021 in Technology, Tips and Tricks, Ubuntu
System Load or System Load Average It is run-queue i.e a queue of processes waiting for a resource(cpu, i/o etc.) to become available . Consider a single-core cpu as a single lane of traffic with bridge and process as cars. Now in this situation System load is 0.0 – If there is no traffic on the road. 1.0 -If the traffic […]
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