OVN学习（二）

部署OVN实验环境

同OVN学习（一）

L3网络

创建逻辑交换机和路由

### Central节点
### 创建逻辑交换机和路由器
# ovn-nbctl ls-add inside
# ovn-nbctl ls-add dmz
# ovn-nbctl lr-add tenant1

创建路由端口

### Central节点
### 创建路由器端口用于连接dmz交换机
# ovn-nbctl lrp-add tenant1 tenant1-dmz 02:d4:1d:8c:d9:9f 20.0.0.1/24
### 创建交换机接口用于连接tenant1路由器
# ovn-nbctl lsp-add dmz dmz-tenant1
# ovn-nbctl lsp-set-type dmz-tenant1 router
# ovn-nbctl lsp-set-addresses dmz-tenant1 02:d4:1d:8c:d9:9f
# ovn-nbctl lsp-set-options dmz-tenant1 router-port=tenant1-dmz

### 创建路由器端口用于连接inside交换机
# ovn-nbctl lrp-add tenant1 tenant1-inside 02:d4:1d:8c:d9:9e 10.0.0.1/24
### 创建交换机接口用于连接tenant1路由器
# ovn-nbctl lsp-add inside inside-tenant1
# ovn-nbctl lsp-set-type inside-tenant1 router
# ovn-nbctl lsp-set-addresses inside-tenant1 02:d4:1d:8c:d9:9e
# ovn-nbctl lsp-set-options inside-tenant1 router-port=tenant1-inside

# ovn-nbctl show
switch 4719a2db-47e0-497d-a01a-3e48268f033b (inside)
    port inside-tenant1
        type: router
        addresses: ["02:d4:1d:8c:d9:9e"]
        router-port: tenant1-inside
switch 5e069447-765e-4f12-960b-22bf1c1f793e (dmz)
    port dmz-tenant1
        type: router
        addresses: ["02:d4:1d:8c:d9:9f"]
        router-port: tenant1-dmz
router fefceb45-e2c9-4cdf-979f-0cf41a6848c2 (tenant1)
    port tenant1-dmz
        mac: "02:d4:1d:8c:d9:9f"
        networks: ["20.0.0.1/24"]
    port tenant1-inside
        mac: "02:d4:1d:8c:d9:9e"
        networks: ["10.0.0.1/24"]

创建交换机

### Central节点
### 创建交换机接口用于连接虚拟机（不加IP的话，后面dhclient会超时，分配不了IP）
# ovn-nbctl lsp-add dmz dmz-vm1
# ovn-nbctl lsp-set-addresses dmz-vm1 "02:d4:1d:8c:d9:9d 20.0.0.10"
# ovn-nbctl lsp-set-port-security dmz-vm1 "02:d4:1d:8c:d9:9d 20.0.0.10"
# ovn-nbctl lsp-add dmz dmz-vm2
# ovn-nbctl lsp-set-addresses dmz-vm2 "02:d4:1d:8c:d9:9c 20.0.0.20"
# ovn-nbctl lsp-set-port-security dmz-vm2 "02:d4:1d:8c:d9:9c 20.0.0.20"

### 创建交换机接口用于连接虚拟机
# ovn-nbctl lsp-add inside inside-vm3
# ovn-nbctl lsp-set-addresses inside-vm3 "02:d4:1d:8c:d9:9b 10.0.0.10"
# ovn-nbctl lsp-set-port-security inside-vm3 "02:d4:1d:8c:d9:9b 10.0.0.10"
# ovn-nbctl lsp-add inside inside-vm4
# ovn-nbctl lsp-set-addresses inside-vm4 "02:d4:1d:8c:d9:9a 10.0.0.20"
# ovn-nbctl lsp-set-port-security inside-vm4 "02:d4:1d:8c:d9:9a 10.0.0.20"

# ovn-nbctl show
switch 4719a2db-47e0-497d-a01a-3e48268f033b (inside)
    port inside-vm4
        addresses: ["02:d4:1d:8c:d9:9a"]
    port inside-vm3
        addresses: ["02:d4:1d:8c:d9:9b"]
    port inside-tenant1
        type: router
        addresses: ["02:d4:1d:8c:d9:9e"]
        router-port: tenant1-inside
switch 5e069447-765e-4f12-960b-22bf1c1f793e (dmz)
    port dmz-tenant1
        type: router
        addresses: ["02:d4:1d:8c:d9:9f"]
        router-port: tenant1-dmz
    port dmz-vm1
        addresses: ["02:d4:1d:8c:d9:9d"]
    port dmz-vm2
        addresses: ["02:d4:1d:8c:d9:9c"]
router fefceb45-e2c9-4cdf-979f-0cf41a6848c2 (tenant1)
    port tenant1-dmz
        mac: "02:d4:1d:8c:d9:9f"
        networks: ["20.0.0.1/24"]
    port tenant1-inside
        mac: "02:d4:1d:8c:d9:9e"
        networks: ["10.0.0.1/24"]

设置DHCP

### Central节点
# ovn-nbctl create DHCP_Options cidr=20.0.0.0/24 options=""server_id"="20.0.0.1" "server_mac"="02:d4:1d:8c:d9:9f" "lease_time"="3600" "router"="20.0.0.1""

# ovn-nbctl create DHCP_Options cidr=10.0.0.0/24 options=""server_id"="10.0.0.1" "server_mac"="02:d4:1d:8c:d9:9e" "lease_time"="3600" "router"="10.0.0.1""

# ovn-nbctl dhcp-options-list
08286864-4368-49e7-9ab9-e1394dd8aea8
1a1a9ee7-6b51-4231-8ec5-9d6135dc6233
# ovn-nbctl dhcp-options-get-options 08286864-4368-49e7-9ab9-e1394dd8aea8
server_mac=02:d4:1d:8c:d9:9e
router=10.0.0.1
server_id=10.0.0.1
lease_time=3600
# ovn-nbctl dhcp-options-get-options 1a1a9ee7-6b51-4231-8ec5-9d6135dc6233
server_mac=02:d4:1d:8c:d9:9f
router=20.0.0.1
server_id=20.0.0.1
lease_time=3600

# ovn-nbctl lsp-set-dhcpv4-options dmz-vm1 1a1a9ee7-6b51-4231-8ec5-9d6135dc6233
# ovn-nbctl lsp-get-dhcpv4-options dmz-vm1
1a1a9ee7-6b51-4231-8ec5-9d6135dc6233 (20.0.0.0/24)
# ovn-nbctl lsp-set-dhcpv4-options dmz-vm2 1a1a9ee7-6b51-4231-8ec5-9d6135dc6233
# ovn-nbctl lsp-get-dhcpv4-options dmz-vm2
1a1a9ee7-6b51-4231-8ec5-9d6135dc6233 (20.0.0.0/24)
# ovn-nbctl lsp-set-dhcpv4-options inside-vm3 08286864-4368-49e7-9ab9-e1394dd8aea8
# ovn-nbctl lsp-get-dhcpv4-options inside-vm3
08286864-4368-49e7-9ab9-e1394dd8aea8 (10.0.0.0/24)
# ovn-nbctl lsp-set-dhcpv4-options inside-vm4 08286864-4368-49e7-9ab9-e1394dd8aea8
# ovn-nbctl lsp-get-dhcpv4-options inside-vm4
08286864-4368-49e7-9ab9-e1394dd8aea8 (10.0.0.0/24)

创建虚拟机

### Central节点（dhclient不知道为什么不能自动退出，需要手动kill下）
# ip netns add vm1
# ovs-vsctl add-port br-int vm1 -- set interface vm1
# ip link set vm1 address 02:d4:1d:8c:d9:9d
# ip link set vm1 netns vm1
# ovs-vsctl set Interface vm1 external_ids:iface-id=dmz-vm1
# ip netns exec vm1 dhclient vm1
# ip netns exec vm1 ip addr show vm1

# ip netns add vm2
# ovs-vsctl add-port br-int vm2 -- set interface vm2 type=internal
# ip link set vm2 address 02:d4:1d:8c:d9:9c
# ip link set vm2 netns vm2
# ovs-vsctl set Interface vm2 external_ids:iface-id=dmz-vm2
# ip netns exec vm2 dhclient vm2
# ip netns exec vm2 ip addr show vm2

### Node节点
# ip netns add vm3
# ovs-vsctl add-port br-int vm3 -- set interface vm3 type=internal
# ip link set vm3 address 02:d4:1d:8c:d9:9b
# ip link set vm3 netns vm3
# ovs-vsctl set Interface vm3 external_ids:iface-id=inside-vm3
# ip netns exec vm3 dhclient vm3
# ip netns exec vm3 ip addr show vm3

# ip netns add vm4
# ovs-vsctl add-port br-int vm4 -- set interface vm4 type=internal
# ip link set vm4 address 02:d4:1d:8c:d9:9a
# ip link set vm4 netns vm4
# ovs-vsctl set Interface vm4 external_ids:iface-id=inside-vm4
# ip netns exec vm4 dhclient vm4
# ip netns exec vm4 ip addr show vm4

测试

### Central节点
### vm1到网关的连通性
# ip netns exec vm1 ping -c 2 20.0.0.1
PING 20.0.0.1 (20.0.0.1) 56(84) bytes of data.
64 bytes from 20.0.0.1: icmp_seq=1 ttl=254 time=0.224 ms
64 bytes from 20.0.0.1: icmp_seq=2 ttl=254 time=0.245 ms

--- 20.0.0.1 ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 999ms
rtt min/avg/max/mdev = 0.224/0.234/0.245/0.018 ms

### vm1到vm2的连通性
# ip netns exec vm1 ping -c 2 20.0.0.20
PING 20.0.0.20 (20.0.0.20) 56(84) bytes of data.
64 bytes from 20.0.0.20: icmp_seq=1 ttl=64 time=0.736 ms
64 bytes from 20.0.0.20: icmp_seq=2 ttl=64 time=0.071 ms

--- 20.0.0.20 ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 1000ms
rtt min/avg/max/mdev = 0.071/0.403/0.736/0.333 ms

### vm1到vm3的连通性
# ip netns exec vm1 ping -c 2 10.0.0.10
PING 10.0.0.10 (10.0.0.10) 56(84) bytes of data.
64 bytes from 10.0.0.10: icmp_seq=1 ttl=63 time=1.36 ms
64 bytes from 10.0.0.10: icmp_seq=2 ttl=63 time=0.601 ms

--- 10.0.0.10 ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 1001ms
rtt min/avg/max/mdev = 0.601/0.981/1.362/0.381 ms