一：OPENSTACK Queens系统环境准备

Posted 2021-04-24 MisterChen

系统环境：centos7，两台服务器，一台controller节点，一台computer节点

两个节点，每个节点一个网络接口

controller:ens160:192.168.1.110 

computer:ens160:192.168.1.111

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centos7系统安装完毕之后简单调整

• 设置时区

查看时区是否正确

[root@localhost ~]# date

Wed Mar 21 23:04:32 EDT 2018

不正确的话调整过来

[root@localhost ~]# rm -f /etc/localtime

[root@localhost ~]# cp /usr/share/zoneinfo/Asia/Shanghai /etc/localtime

[root@localhost ~]# date

Thu Mar 22 11:05:45 CST 2018

• 关闭selinux

[root@localhost ~]# sed -i 's#SELINUX=enforcing#SELINUX=disabled#g' /etc/selinux/config

[root@localhost ~]# setenforce 0

[root@localhost ~]# getenforce 

Permissive

• 关闭防火墙

[root@localhost ~]# systemctl stop firewalld.service

[root@localhost ~]# systemctl disable firewalld.service

Removed symlink /etc/systemd/system/multi-user.target.wants/firewalld.service.

Removed symlink /etc/systemd/system/dbus-org.fedoraproject.FirewallD1.service.

• 安装一些常用组件

[root@localhost ~]# yum install -y vim openssh-clients ntpdate man lrzsz net-tools wget

• 配置时间同步

[root@localhost ~]# yum install -y chrony

[root@localhost ~]# rpm -qa|grep chrony

chrony-3.1-2.el7.centos.x86_64

[root@localhost ~]# ps -ef|grep chrony

chrony     670     1  0 09:35 ?        00:00:00 /usr/sbin/chronyd

root      2448  1711  0 11:25 pts/0    00:00:00 grep --color=auto chrony

[root@localhost ~]# chronyc sources

210 Number of sources = 4

MS Name/IP address         Stratum Poll Reach LastRx Last sample               

===============================================================================

^- ntp5.flashdance.cx            2   9   161    19  +8645us[+8645us] +/-  188ms

^- ntp2.flashdance.cx            2   8   371    73    +13ms[  +13ms] +/-  185ms

^* time5.aliyun.com              2   9   377   277  +4031us[+4048us] +/-   18ms

^- 119.79-161-57.customer.l>     2   7   303    79   -703us[ -703us] +/-  155ms

• 修改文件句柄数

[root@localhost ~]# echo "* soft nofile 655360" >> /etc/security/limits.conf

[root@localhost ~]# echo "* hard nofile 655360" >> /etc/security/limits.conf

• 配置主机名字，以及hosts解析

[root@localhost ~]# cat /etc/hosts

127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4

::1         localhost localhost.localdomain localhost6 localhost6.localdomain6

192.168.1.110 controller

192.168.1.111 computer

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[root@computer ~]# cat /etc/hosts

127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4

::1         localhost localhost.localdomain localhost6 localhost6.localdomain6

192.168.1.110 controller

192.168.1.111 computer

———————————————

[root@controller ~]# ping computer

PING computer (192.168.1.111) 56(84) bytes of data.

64 bytes from computer (192.168.1.111): icmp_seq=1 ttl=64 time=0.081 ms

64 bytes from computer (192.168.1.111): icmp_seq=2 ttl=64 time=0.068 ms

64 bytes from computer (192.168.1.111): icmp_seq=3 ttl=64 time=0.070 ms

64 bytes from computer (192.168.1.111): icmp_seq=4 ttl=64 time=0.071 ms

———————————————

[root@computer ~]# ping controller

PING controller (192.168.1.110) 56(84) bytes of data.

64 bytes from controller (192.168.1.110): icmp_seq=1 ttl=64 time=0.075 ms

64 bytes from controller (192.168.1.110): icmp_seq=2 ttl=64 time=0.076 ms

64 bytes from controller (192.168.1.110): icmp_seq=3 ttl=64 time=0.068 ms

64 bytes from controller (192.168.1.110): icmp_seq=4 ttl=64 time=0.062 ms