WordPress redirects to installation page every after 2 days

Hi I am having this issue for quite long time. My WordPress site shows installation page about every after 2 days. It fixes when I clear MySQL logfile (ib_logfiles0 and ib_logfile1). But it happens again. I made fresh WordPress installation, installed different security plugins in WordPress. Also, I installed fail2ban in my VPS to avoid Brute force attack and increased MySQL logfile size. But it shows again. Please help me.

By the way, I have multiple domain in the same VPS and all other domain works fine except this particular one.

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