Programmer Group

brief introduction Xtrabackup is a data backup tool for InnoDB. It supports online hot backup (backup does not affect data reading and writing). It is a good substitute for InnoDB Hotbackup, a commercial backup tool. It can backup the databases of InnoDB and XtraDB storage engines non-blocking (for MyISAM backups, table locks are also require ...

background Two network cards are configured for VirtualBox Virtual Machine (loaded with Ubuntu 16.04 system). The network modes are "Network Address Translation (NAT)" and "Host-Only" adapter, where enp0s3 network card (NAT) is used for external network access and enp0s8 network card (Host-Only) is used for host access to ...

ABSTRACT: Recently, during the migration of Docker's mirror image, I met some problems. I don't know how to solve them. I found this good article and solved my problems. It was translated. http://tuhrig.de/difference-between-save-and-export-in-docker/ I've been playing with Docker recently, a virtual technology for application containers and ...

Linux users and OSX users must be familiar with the package manager. Through the package manager, you can install a package by one line of commands, and then the package manager will help you download the package from the source, while automatically resolving all dependencies (that is, downloading other packages on which to install the package ...

The grep command in Linux system is a powerful text search tool. It can use regular expressions to search text and print matching lines. The full name of grep is Global Regular Expression Print, which represents the global regular expression version, and its permission is for all users. grep works by searching for string templates in one or m ...

Links to the original text: http://t.cn/RzCP9E2 Translation source links: http://imcczy.com/how-to-expand-the-root-filesystem-in-vmware.html Reproduction Notes: Below this article is the operation of requiring partition. The operation of partition is different from that of normal system partition. It is necessary to specify the starting ...

No important system can ignore server security, especially in the public cloud. There are many online tips and tutorials on this subject. Here we only look at a few basic and common best practices. Several security measures to be implemented after system configuration is completed Take Ubuntu 16.04 as an example: 1. Update the kernel ...

It is convenient to install one or two virtual machines on one's own computer for learning cross-platform and cross-system technologies. VMware is one of the commonly used virtual machine software. Among them, VMware Workstation is a fee-based version, which is more powerful and comprehensive; but if you play locally, you can use free VMware Pl ...

linux open file number too many open files solution too many open files The reason for this prompt is that the number of file/socket connections opened by the program exceeds the system settings. View the maximum number of open files per user ulimit -a fdipzone@ubuntu:~$ ulimit -a   core file size          (bloc ...

Error when starting rabbitmq-server: 2018-01-03 06:16:32.494 [info] <0.33.0> Application lager started on node rabbit@ubuntu 2018-01-03 06:16:32.507 [info] <0.5.0> Log file opened with Lager 2018-01-03 06:16:33.438 [error] <0.5.0> Error description: init:do_boot/3 init:start_em/1 rabbit:s ...