By mistake I have deleted /var/log/httpd from jira server
Could you please let me know what kind of impact it may cause to server ? How to recover it
Nothing will stop working, this is not a serious mistake.
To make sure everything works again, stop Apache, recreate the directory (with the right ownership and permissions) and restart Apache.
Your error has removed data that you might need if you want to debug problems that happened before you deleted it, and possibly some reporting. But if you were not trying to debug or report on the apache logs, then there's no real impact.
Recovering the data is down to when you took the last backup.
How to stop and restart apache ? Is it requires any downtime ?
Depends on what version you are on, how it is installed, how your operating system expects it to restart, and most importantly, how your administrators want you to do it.
My home network has some Apache servers. On the main one, "sudo systemctl restart apache" is all I need. But it varies.
Installed version of jira is 7.6.4 and it's a Linux OS (RHEL)
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