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  • systemd management using systemctl and journalctl to check systemd logs


    systemd is like the service manager for your Centos and other modern Linux distributions (including Debian/Mint/Ubuntu) allows you to enable services, stop them, restart them, check their status and even reboot your system. The key commands or arguments you will use with systemctl are the following: Unit Commands:   list-units [PATTERN...]         List loaded units &nbs........

  • MySQLD Server shutdown remotely unexpectedly


    170110  5:35:23 [Note] /usr/libexec/mysqld: Normal shutdown 170110  5:35:23 [Note] Event Scheduler: Purging the queue. 0 events 170110  5:35:23  InnoDB: Starting shutdown... 170110  5:35:24  InnoDB: Shutdown completed; log sequence number 0 12765401 170110  5:35:24 [Note] /usr/libexec/mysqld: Shutdown complete 170110 05:35:24 mysqld_safe mysqld from pid file /var/run/mysqld/mysqld.pid ended........

  • Linux Kernel Freeze/Hang during boot on io scheduler cfq registered (default)


    You'll see the following and the boot process will freeze: io scheduler noop registered io scheduler anticipatory registered io scheduler deadline registered io scheduler cfq registered (default) I have struggled with this issue on vari........

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