After changing SSH port, If I try to SSH using new port number

I was getting error “no route to host”

The issue was due to IPtables

I have to flush all firewall rules using

IPtables -f

serveice iptables restart

This fixed the ssh port issue

We had this issue while dumping one database

We added below parameter in /etc/my.cnf

innodb_strict_mode = 0

And restarted Mysql

Now mysql dump worked fine