I installed bitnami's redmine half a year ago
As a result, the server will be changed after half a year, and the original bits and pieces will continue to be kept.
It is too troublesome to back up mysql and then copy all kinds of uploaded files.
It turns out that bitnami's one-click installation of redmine doesn't take such a long time.
After directly tar -zcvf, download, upload, tar zxvf, and then start directly without problem
Note that there is a pit here, you must create a new mysql user before zxvf, otherwise mysql will not start up
groupadd mysql //create mysql group
useradd -g mysql mysql //Create a mysql user and add it to the mysql group