Checking System logs

                 PHP RELATED AND DEPLOYMENT 

Php There are two versions 7.4 And 8.0 Version if 8.0 Version is not supporting we should remove 8.0 and we need to install 7.4 version. If we got any error like some dependency packages are missing means we need to install those dependency packages manually. To find the list of modules we should run php –m command and we should take the list of modules which are present on the server and we should compare which modules are from the developer machine. When we are setting up the new project Env and config PHP files will be missed.We have to copy from existing projects. To work the setup upgrade command we need to install the Composer and then we need to upgrade composer to 1.10 then only the magento commands will work.

                                   CHECKING LOGS BASED ON ISSUES

If something is not opening like phpmyadmin,Webpage,website.It will stores the logs for every actions.We need to check both the success and error logs we will find the difference. First we need to go to /var/log folder there we should find by using this command tail –f php7.4-fpm.log.If this command gives the critical alert means website may not works. To find the particular modules or configuraion files we should have to use locate php.ini and then we should open the file /etc/php/7.4/cli/php.ini In this above file file we can find maximum load configurations,Maximum Uploads. For Mysql Related Configurations we can check in /usr/local/etc/mysql/my.cnf. This location is in magento-database server. We need to verify all the configurations,.if the bind –ip address column if we are giving 0.0.0.0 means we are allowing all the ip address to login into this server .If we want we can give particular ip address also then it will allow only that ip address. To verify the logs go to /var/log/nginx/ and then tail –f error.log then it will shows error message And if we want to check the log for php related tail –f php7.0 or 7.4-fpm.log If we want to find the system authentication logs we should go to /var/log tail –f syslog To Remove Php in server sudo apt-get purge php7.* Sudo apt-get autoclean Sudo apt-get autoremove.