Shulou(Shulou.com)05/31 Report--

This article introduces the relevant knowledge of "what preparations MySQL needs to do before installing the Linux platform". In the operation of actual cases, many people will encounter such a dilemma, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

1. Selinux shuts down

Sed-I's Union SELINUXPRENTENTFORCING sed'/ etc/selinux/config

two。 Time synchronization 2.1 redhat 5 Compact 6

Slew time needs to be turned on.

Vi / etc/sysconfig/ntpdOPTIONS= "- x-u ntp:ntp-p / var/run/ntpd.pid" service ntpd restartchkconfig ntpd on

Configure the NTP service

# vi / etc/ntp.confserver iburst

Stop the NTP service and manually synchronize the time.

Service ntpd stopntpdate-b service ntpd start

The clock is written back to the motherboard

Hwclock-systohchwclock;date2.2 redhat 7

Using Chrony services

Vi / etc/chrony.confserver iburst

Restart the time synchronization service:

Systemctl restart chronyd.servicesystemctl enable chronyd.service

View the time synchronization source:

Chronyc sources-v

The clock is written back to the motherboard

Hwclock-- systohchwclock;date3. Network setting # vi / etc/hosts127.0.0.1 localhost 4. Configure Limitscat > > / etc/security/limits.conf/etc/security/limits.d/90-nproc.conf/etc/sysctl.conf

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