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众人起哄：船主。　　《贤妻》这部戏不但好看而且很有教育意Since both Redis servers are installed on the Linux operating system, and the two Redis servers will switch when the Master master server fails, it must be ensured that the port numbers of the two Redis servers have been added to the firewall, or the firewalls of the two Linux operating systems have been shut down, otherwise Master-link-Status: down will be prompted, and Master master server is not connected. There are two solutions: the first is to shut down the firewalls of the two Linux operating systems; The second method is to add the port number of each Redis service to the firewall to allow communication through the port number. You can use the command "firewall-cmd-query-port=6379/tcp" first. If the result is No, you can continue to execute the following command "firewall-cmd-add-port=6379/tcp". After the command is executed, you will return Success, indicating that the increase was successful. In this way, Redis servers on the two Linux systems can be switched smoothly to perform sentinel mode operations.If there is no language pack file in this' lang 'folder, you can download a winkawaks simulator, the Chinese version, online. Just copy the roms folder on your CD into the newly downloaded Chinese version of winkawaks simulator and it will work.Intermediary mode:-For example, a well-defined goal: to complete English barrier-free reading within one year without looking up a dictionary, then the performance of the goal includes mastering 2W + words, common word groups, mastering English common phrases, and planning one's reading within one year."Their attack capabilities are becoming more and more complex and elusive, and it is even difficult for security personnel to find out which IT stacks are their targets," she explained.