OVN启动 ovn-central 和 ovn-controller

文档说明：只是记录关键点

实验环境： linux debian 11 + virtualbox
3台虚拟机
192.168.10.251 (central)
192.168.3.249 (node1)
192.168.3.250 (node2)

控制平面：北向云管理系统 CMS （OVN北向数据库接收CMS）
转发（数据平面）平面：南向 OVS （东西向流量和南北向流量）

ovn 原理图

照搬官网的图： https://www.ovn.org/en/architecture/

                                         CMS
                                          |
                                          |
                              +-----------|-----------+
                              |           |           |
                              |     OVN/CMS Plugin    |
                              |           |           |
                              |           |           |
                              |   OVN Northbound DB   |
                              |           |           |
                              |           |           |
                              |       ovn-northd      |
                              |           |           |
                              +-----------|-----------+
                                          |
                                          |
                                +-------------------+
                                | OVN Southbound DB |
                                +-------------------+
                                          |
                                          |
                       +------------------+------------------+
                       |                  |                  |
         HV 1          |                  |    HV n          |
       +---------------|---------------+  .  +---------------|---------------+
       |               |               |  .  |               |               |
       |        ovn-controller         |  .  |        ovn-controller         |
       |         |          |          |  .  |         |          |          |
       |         |          |          |     |         |          |          |
       |  ovs-vswitchd   ovsdb-server  |     |  ovs-vswitchd   ovsdb-server  |
       |                               |     |                               |
       +-------------------------------+     +-------------------------------+

ovn-central

启动 ovn-central

#!/bin/bash
set -exu

__DIR__=$(cd "$(dirname "$0")";pwd)
cd ${__DIR__}
export PATH=$PATH:/usr/local/share/openvswitch/scripts
export PATH=$PATH:/usr/local/share/ovn/scripts


ovn-ctl start_northd # center need
ovn-nbctl set-connection ptcp:6641
ovn-sbctl set-connection ptcp:6642
ovn-nbctl show
ovn-sbctl show

sleep 2

netstat -antp | grep 6641
netstat -antp | grep 6642

ovn-central-stop-and-reset

关闭ovn-central 并且重置已配置信息

#!/bin/bash

__DIR__=$(cd "$(dirname "$0")";pwd)
cd ${__DIR__}
export PATH=$PATH:/usr/local/share/openvswitch/scripts
export PATH=$PATH:/usr/local/share/ovn/scripts

set -exu

{
  ovn-ctl stop_northd
} || {
	echo $?
}

# 不想重置配置，这两句命令不要写
rm -rf /usr/local/etc/ovn/ovnnb_db.db
rm -rf /usr/local/etc/ovn/ovnsb_db.db

ovn-controller

启动ovn-controller，每个节点都需要启动

#!/bin/bash

__DIR__=$(cd "$(dirname "$0")";pwd)
cd ${__DIR__}
export PATH=$PATH:/usr/local/share/openvswitch/scripts
export PATH=$PATH:/usr/local/share/ovn/scripts
set -exu

proc_num=$(ps -ef | grep 'ovn-controller unix:/usr/local/var/run/openvswitch/db.sock' | grep -v grep | wc -l)
test $proc_num -gt 0 && ( echo 'ovn-controller is running '; exit 0 )

ipv6=$(ip -6 address show  | grep inet6 | awk '{print $2}' | cut -d'/' -f1 | sed -n '2p')
ipv4=$(ip -4 address show  | grep inet | grep -v 127.0.0 | awk '{print $2}' | cut -d'/' -f1 | sed -n '1p')


CENTRAL_IP=192.168.3.251

EXTERNAL_IP="$ipv4,$ipv6"
LOCAL_IP="$ipv4,$ipv6"
ENCAP_TYPE=geneve
id_file=system-id.conf
test -s $id_file || cat /proc/sys/kernel/random/uuid > $id_file

chassis_name=$(cat $id_file)
ovs-ctl start --system-id=${chassis_name}



ovs-vsctl set Open_vSwitch . \
external_ids:ovn-encap-ip="$EXTERNAL_IP" \
external_ids:local_ip="$LOCAL_IP" \
external_ids:ovn-encap-type="$ENCAP_TYPE" \
external_ids:system-id=${chassis_name} \
external_ids:ovn-remote="tcp:${CENTRAL_IP}:6642" \
external_ids:ovn-nb="tcp:$CENTRAL_IP:6641"

ovn-ctl start_controller

ovs-vsctl --columns external_ids list open_vswitch

ovs-ctl status

关闭ovn-controller

关闭ovn-controller 和重置配置

#!/bin/bash

__DIR__=$(cd "$(dirname "$0")";pwd)
cd ${__DIR__}
export PATH=$PATH:/usr/local/share/openvswitch/scripts
export PATH=$PATH:/usr/local/share/ovn/scripts
set -exu

{
	ovs-ctl stop
	ovn-ctl stop_controller
} || {

	echo $?
}

#ovs-etc-dir:
# /usr/local/etc/openvswitch
# /usr/local/etc/ovn

# 不想重置配置，这两句命令不要写
rm -rf /usr/local/etc/openvswitch/conf.db
rm -rf /usr/local/etc/ovn/conf.db