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80c0adcb | 1 | [[sysadmin_network_configuration]] |
0bcd1f7f DM |
2 | Network Configuration |
3 | --------------------- | |
5f09af76 DM |
4 | ifdef::wiki[] |
5 | :pve-toplevel: | |
6 | endif::wiki[] | |
7 | ||
a22d7c24 | 8 | Network configuration can be done either via the GUI, or by manually |
05213009 EK |
9 | editing the file `/etc/network/interfaces`, which contains the |
10 | whole network configuration. The `interfaces(5)` manual page contains the | |
11 | complete format description. All {pve} tools try hard to keep direct | |
52e23c35 | 12 | user modifications, but using the GUI is still preferable, because it |
05213009 | 13 | protects you from errors. |
0bcd1f7f | 14 | |
a22d7c24 | 15 | Once the network is configured, you can use the Debian traditional tools `ifup` |
05213009 | 16 | and `ifdown` commands to bring interfaces up and down. |
0bcd1f7f | 17 | |
52e23c35 TL |
18 | Apply Network Changes |
19 | ~~~~~~~~~~~~~~~~~~~~~ | |
20 | ||
21 | {pve} does not write changes directly to `/etc/network/interfaces`. Instead, we | |
22 | write into a temporary file called `/etc/network/interfaces.new`, this way you | |
23 | can do many related changes at once. This also allows to ensure your changes | |
24 | are correct before applying, as a wrong network configuration may render a node | |
25 | inaccessible. | |
26 | ||
27 | Reboot Node to apply | |
28 | ^^^^^^^^^^^^^^^^^^^^ | |
29 | ||
30 | With the default installed `ifupdown` network managing package you need to | |
31 | reboot to commit any pending network changes. Most of the time, the basic {pve} | |
32 | network setup is stable and does not change often, so rebooting should not be | |
33 | required often. | |
34 | ||
35 | Reload Network with ifupdown2 | |
36 | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | |
37 | ||
38 | With the optional `ifupdown2` network managing package you also can reload the | |
39 | network configuration live, without requiring a reboot. | |
40 | ||
52e23c35 TL |
41 | Since {pve} 6.1 you can apply pending network changes over the web-interface, |
42 | using the 'Apply Configuration' button in the 'Network' panel of a node. | |
43 | ||
44 | To install 'ifupdown2' ensure you have the latest {pve} updates installed, then | |
45 | ||
46 | WARNING: installing 'ifupdown2' will remove 'ifupdown', but as the removal | |
47 | scripts of 'ifupdown' before version '0.8.35+pve1' have a issue where network | |
48 | is fully stopped on removal footnote:[Introduced with Debian Buster: | |
49 | https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=945877] you *must* ensure | |
50 | that you have a up to date 'ifupdown' package version. | |
51 | ||
52 | For the installation itself you can then simply do: | |
53 | ||
54 | apt install ifupdown2 | |
55 | ||
56 | With that you're all set. You can also switch back to the 'ifupdown' variant at | |
57 | any time, if you run into issues. | |
0bcd1f7f | 58 | |
0bcd1f7f DM |
59 | Naming Conventions |
60 | ~~~~~~~~~~~~~~~~~~ | |
61 | ||
62 | We currently use the following naming conventions for device names: | |
63 | ||
05213009 EK |
64 | * Ethernet devices: en*, systemd network interface names. This naming scheme is |
65 | used for new {pve} installations since version 5.0. | |
7a0d4784 | 66 | |
05213009 EK |
67 | * Ethernet devices: eth[N], where 0 ≤ N (`eth0`, `eth1`, ...) This naming |
68 | scheme is used for {pve} hosts which were installed before the 5.0 | |
69 | release. When upgrading to 5.0, the names are kept as-is. | |
0bcd1f7f DM |
70 | |
71 | * Bridge names: vmbr[N], where 0 ≤ N ≤ 4094 (`vmbr0` - `vmbr4094`) | |
72 | ||
73 | * Bonds: bond[N], where 0 ≤ N (`bond0`, `bond1`, ...) | |
74 | ||
75 | * VLANs: Simply add the VLAN number to the device name, | |
7a0d4784 | 76 | separated by a period (`eno1.50`, `bond1.30`) |
0bcd1f7f DM |
77 | |
78 | This makes it easier to debug networks problems, because the device | |
05213009 | 79 | name implies the device type. |
cc3cb912 | 80 | |
7a0d4784 WL |
81 | Systemd Network Interface Names |
82 | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | |
83 | ||
8116dea5 DM |
84 | Systemd uses the two character prefix 'en' for Ethernet network |
85 | devices. The next characters depends on the device driver and the fact | |
cc3cb912 | 86 | which schema matches first. |
7a0d4784 WL |
87 | |
88 | * o<index>[n<phys_port_name>|d<dev_port>] — devices on board | |
89 | ||
90 | * s<slot>[f<function>][n<phys_port_name>|d<dev_port>] — device by hotplug id | |
91 | ||
92 | * [P<domain>]p<bus>s<slot>[f<function>][n<phys_port_name>|d<dev_port>] — devices by bus id | |
93 | ||
94 | * x<MAC> — device by MAC address | |
95 | ||
cc3cb912 | 96 | The most common patterns are: |
7a0d4784 WL |
97 | |
98 | * eno1 — is the first on board NIC | |
99 | ||
100 | * enp3s0f1 — is the NIC on pcibus 3 slot 0 and use the NIC function 1. | |
101 | ||
cc3cb912 DM |
102 | For more information see https://www.freedesktop.org/wiki/Software/systemd/PredictableNetworkInterfaceNames/[Predictable Network Interface Names]. |
103 | ||
05213009 EK |
104 | Choosing a network configuration |
105 | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
106 | ||
a22d7c24 | 107 | Depending on your current network organization and your resources you can |
05213009 EK |
108 | choose either a bridged, routed, or masquerading networking setup. |
109 | ||
110 | {pve} server in a private LAN, using an external gateway to reach the internet | |
111 | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | |
112 | ||
a22d7c24 | 113 | The *Bridged* model makes the most sense in this case, and this is also |
05213009 | 114 | the default mode on new {pve} installations. |
a22d7c24 SR |
115 | Each of your Guest system will have a virtual interface attached to the |
116 | {pve} bridge. This is similar in effect to having the Guest network card | |
05213009 EK |
117 | directly connected to a new switch on your LAN, the {pve} host playing the role |
118 | of the switch. | |
119 | ||
120 | {pve} server at hosting provider, with public IP ranges for Guests | |
121 | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | |
122 | ||
123 | For this setup, you can use either a *Bridged* or *Routed* model, depending on | |
124 | what your provider allows. | |
125 | ||
126 | {pve} server at hosting provider, with a single public IP address | |
127 | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | |
128 | ||
129 | In that case the only way to get outgoing network accesses for your guest | |
a22d7c24 | 130 | systems is to use *Masquerading*. For incoming network access to your guests, |
05213009 EK |
131 | you will need to configure *Port Forwarding*. |
132 | ||
133 | For further flexibility, you can configure | |
134 | VLANs (IEEE 802.1q) and network bonding, also known as "link | |
135 | aggregation". That way it is possible to build complex and flexible | |
136 | virtual networks. | |
7a0d4784 | 137 | |
0bcd1f7f DM |
138 | Default Configuration using a Bridge |
139 | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
140 | ||
50f88938 | 141 | [thumbnail="default-network-setup-bridge.svg"] |
05213009 | 142 | Bridges are like physical network switches implemented in software. |
e2280bf7 TL |
143 | All virtual guests can share a single bridge, or you can create multiple |
144 | bridges to separate network domains. Each host can have up to 4094 bridges. | |
05213009 | 145 | |
0bcd1f7f | 146 | The installation program creates a single bridge named `vmbr0`, which |
04e8476d EK |
147 | is connected to the first Ethernet card. The corresponding |
148 | configuration in `/etc/network/interfaces` might look like this: | |
0bcd1f7f DM |
149 | |
150 | ---- | |
151 | auto lo | |
152 | iface lo inet loopback | |
153 | ||
7a0d4784 | 154 | iface eno1 inet manual |
0bcd1f7f DM |
155 | |
156 | auto vmbr0 | |
157 | iface vmbr0 inet static | |
33349b9f | 158 | address 192.168.10.2/24 |
0bcd1f7f | 159 | gateway 192.168.10.1 |
7a39aabd AL |
160 | bridge-ports eno1 |
161 | bridge-stp off | |
162 | bridge-fd 0 | |
0bcd1f7f DM |
163 | ---- |
164 | ||
165 | Virtual machines behave as if they were directly connected to the | |
166 | physical network. The network, in turn, sees each virtual machine as | |
167 | having its own MAC, even though there is only one network cable | |
168 | connecting all of these VMs to the network. | |
169 | ||
0bcd1f7f DM |
170 | Routed Configuration |
171 | ~~~~~~~~~~~~~~~~~~~~ | |
172 | ||
173 | Most hosting providers do not support the above setup. For security | |
174 | reasons, they disable networking as soon as they detect multiple MAC | |
175 | addresses on a single interface. | |
176 | ||
67c9747f TL |
177 | TIP: Some providers allow you to register additional MACs through their |
178 | management interface. This avoids the problem, but can be clumsy to | |
0bcd1f7f DM |
179 | configure because you need to register a MAC for each of your VMs. |
180 | ||
8c1189b6 | 181 | You can avoid the problem by ``routing'' all traffic via a single |
0bcd1f7f DM |
182 | interface. This makes sure that all network packets use the same MAC |
183 | address. | |
184 | ||
50f88938 | 185 | [thumbnail="default-network-setup-routed.svg"] |
05213009 | 186 | A common scenario is that you have a public IP (assume `198.51.100.5` |
0bcd1f7f | 187 | for this example), and an additional IP block for your VMs |
e4682f58 | 188 | (`203.0.113.16/28`). We recommend the following setup for such |
0bcd1f7f DM |
189 | situations: |
190 | ||
191 | ---- | |
192 | auto lo | |
193 | iface lo inet loopback | |
194 | ||
e4682f58 DW |
195 | auto eno0 |
196 | iface eno0 inet static | |
197 | address 198.51.100.5/29 | |
05213009 | 198 | gateway 198.51.100.1 |
1ed90852 | 199 | post-up echo 1 > /proc/sys/net/ipv4/ip_forward |
7a0d4784 | 200 | post-up echo 1 > /proc/sys/net/ipv4/conf/eno1/proxy_arp |
0bcd1f7f DM |
201 | |
202 | ||
203 | auto vmbr0 | |
204 | iface vmbr0 inet static | |
e4682f58 | 205 | address 203.0.113.17/28 |
7a39aabd AL |
206 | bridge-ports none |
207 | bridge-stp off | |
208 | bridge-fd 0 | |
0bcd1f7f DM |
209 | ---- |
210 | ||
211 | ||
8c1189b6 FG |
212 | Masquerading (NAT) with `iptables` |
213 | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
0bcd1f7f | 214 | |
05213009 EK |
215 | Masquerading allows guests having only a private IP address to access the |
216 | network by using the host IP address for outgoing traffic. Each outgoing | |
217 | packet is rewritten by `iptables` to appear as originating from the host, | |
218 | and responses are rewritten accordingly to be routed to the original sender. | |
0bcd1f7f DM |
219 | |
220 | ---- | |
221 | auto lo | |
222 | iface lo inet loopback | |
223 | ||
05213009 | 224 | auto eno1 |
470d4313 | 225 | #real IP address |
7a0d4784 | 226 | iface eno1 inet static |
33349b9f | 227 | address 198.51.100.5/24 |
05213009 | 228 | gateway 198.51.100.1 |
0bcd1f7f DM |
229 | |
230 | auto vmbr0 | |
231 | #private sub network | |
232 | iface vmbr0 inet static | |
33349b9f | 233 | address 10.10.10.1/24 |
7a39aabd AL |
234 | bridge-ports none |
235 | bridge-stp off | |
236 | bridge-fd 0 | |
0bcd1f7f | 237 | |
22d52440 | 238 | post-up echo 1 > /proc/sys/net/ipv4/ip_forward |
7a0d4784 WL |
239 | post-up iptables -t nat -A POSTROUTING -s '10.10.10.0/24' -o eno1 -j MASQUERADE |
240 | post-down iptables -t nat -D POSTROUTING -s '10.10.10.0/24' -o eno1 -j MASQUERADE | |
0bcd1f7f DM |
241 | ---- |
242 | ||
22d52440 OB |
243 | NOTE: In some masquerade setups with firewall enabled, conntrack zones might be |
244 | needed for outgoing connections. Otherwise the firewall could block outgoing | |
245 | connections since they will prefer the `POSTROUTING` of the VM bridge (and not | |
246 | `MASQUERADE`). | |
247 | ||
248 | Adding these lines in the `/etc/network/interfaces` can fix this problem: | |
249 | ||
250 | ---- | |
251 | post-up iptables -t raw -I PREROUTING -i fwbr+ -j CT --zone 1 | |
252 | post-down iptables -t raw -D PREROUTING -i fwbr+ -j CT --zone 1 | |
253 | ---- | |
254 | ||
255 | For more information about this, refer to the following links: | |
217f7cd8 | 256 | |
22d52440 | 257 | https://commons.wikimedia.org/wiki/File:Netfilter-packet-flow.svg[Netfilter Packet Flow] |
217f7cd8 | 258 | |
22d52440 | 259 | https://lwn.net/Articles/370152/[Patch on netdev-list introducing conntrack zones] |
217f7cd8 | 260 | |
22d52440 OB |
261 | https://blog.lobraun.de/2019/05/19/prox/[Blog post with a good explanation by using TRACE in the raw table] |
262 | ||
263 | ||
b4c06a93 WL |
264 | |
265 | Linux Bond | |
266 | ~~~~~~~~~~ | |
267 | ||
3eafe338 WL |
268 | Bonding (also called NIC teaming or Link Aggregation) is a technique |
269 | for binding multiple NIC's to a single network device. It is possible | |
270 | to achieve different goals, like make the network fault-tolerant, | |
271 | increase the performance or both together. | |
272 | ||
273 | High-speed hardware like Fibre Channel and the associated switching | |
274 | hardware can be quite expensive. By doing link aggregation, two NICs | |
275 | can appear as one logical interface, resulting in double speed. This | |
276 | is a native Linux kernel feature that is supported by most | |
277 | switches. If your nodes have multiple Ethernet ports, you can | |
278 | distribute your points of failure by running network cables to | |
279 | different switches and the bonded connection will failover to one | |
280 | cable or the other in case of network trouble. | |
281 | ||
282 | Aggregated links can improve live-migration delays and improve the | |
283 | speed of replication of data between Proxmox VE Cluster nodes. | |
b4c06a93 WL |
284 | |
285 | There are 7 modes for bonding: | |
286 | ||
287 | * *Round-robin (balance-rr):* Transmit network packets in sequential | |
288 | order from the first available network interface (NIC) slave through | |
289 | the last. This mode provides load balancing and fault tolerance. | |
290 | ||
291 | * *Active-backup (active-backup):* Only one NIC slave in the bond is | |
292 | active. A different slave becomes active if, and only if, the active | |
293 | slave fails. The single logical bonded interface's MAC address is | |
294 | externally visible on only one NIC (port) to avoid distortion in the | |
295 | network switch. This mode provides fault tolerance. | |
296 | ||
297 | * *XOR (balance-xor):* Transmit network packets based on [(source MAC | |
298 | address XOR'd with destination MAC address) modulo NIC slave | |
299 | count]. This selects the same NIC slave for each destination MAC | |
300 | address. This mode provides load balancing and fault tolerance. | |
301 | ||
302 | * *Broadcast (broadcast):* Transmit network packets on all slave | |
303 | network interfaces. This mode provides fault tolerance. | |
304 | ||
305 | * *IEEE 802.3ad Dynamic link aggregation (802.3ad)(LACP):* Creates | |
306 | aggregation groups that share the same speed and duplex | |
307 | settings. Utilizes all slave network interfaces in the active | |
308 | aggregator group according to the 802.3ad specification. | |
309 | ||
310 | * *Adaptive transmit load balancing (balance-tlb):* Linux bonding | |
311 | driver mode that does not require any special network-switch | |
312 | support. The outgoing network packet traffic is distributed according | |
313 | to the current load (computed relative to the speed) on each network | |
314 | interface slave. Incoming traffic is received by one currently | |
315 | designated slave network interface. If this receiving slave fails, | |
316 | another slave takes over the MAC address of the failed receiving | |
317 | slave. | |
318 | ||
e60ce90c | 319 | * *Adaptive load balancing (balance-alb):* Includes balance-tlb plus receive |
b4c06a93 WL |
320 | load balancing (rlb) for IPV4 traffic, and does not require any |
321 | special network switch support. The receive load balancing is achieved | |
322 | by ARP negotiation. The bonding driver intercepts the ARP Replies sent | |
323 | by the local system on their way out and overwrites the source | |
324 | hardware address with the unique hardware address of one of the NIC | |
325 | slaves in the single logical bonded interface such that different | |
326 | network-peers use different MAC addresses for their network packet | |
327 | traffic. | |
328 | ||
649098a6 | 329 | If your switch support the LACP (IEEE 802.3ad) protocol then we recommend using |
a22d7c24 | 330 | the corresponding bonding mode (802.3ad). Otherwise you should generally use the |
649098a6 EK |
331 | active-backup mode. + |
332 | // http://lists.linux-ha.org/pipermail/linux-ha/2013-January/046295.html | |
333 | If you intend to run your cluster network on the bonding interfaces, then you | |
334 | have to use active-passive mode on the bonding interfaces, other modes are | |
335 | unsupported. | |
b4c06a93 | 336 | |
cd1de2c2 WL |
337 | The following bond configuration can be used as distributed/shared |
338 | storage network. The benefit would be that you get more speed and the | |
339 | network will be fault-tolerant. | |
340 | ||
b4c06a93 WL |
341 | .Example: Use bond with fixed IP address |
342 | ---- | |
343 | auto lo | |
344 | iface lo inet loopback | |
345 | ||
7a0d4784 | 346 | iface eno1 inet manual |
b4c06a93 | 347 | |
7a0d4784 | 348 | iface eno2 inet manual |
b4c06a93 | 349 | |
61b099f5 WL |
350 | iface eno3 inet manual |
351 | ||
b4c06a93 WL |
352 | auto bond0 |
353 | iface bond0 inet static | |
5f05aad1 | 354 | bond-slaves eno1 eno2 |
33349b9f | 355 | address 192.168.1.2/24 |
7a39aabd AL |
356 | bond-miimon 100 |
357 | bond-mode 802.3ad | |
358 | bond-xmit-hash-policy layer2+3 | |
b4c06a93 WL |
359 | |
360 | auto vmbr0 | |
361 | iface vmbr0 inet static | |
33349b9f | 362 | address 10.10.10.2/24 |
7ea42266 | 363 | gateway 10.10.10.1 |
61b099f5 | 364 | bridge-ports eno3 |
7a39aabd AL |
365 | bridge-stp off |
366 | bridge-fd 0 | |
b4c06a93 WL |
367 | |
368 | ---- | |
369 | ||
cd1de2c2 | 370 | |
50f88938 | 371 | [thumbnail="default-network-setup-bond.svg"] |
cd1de2c2 WL |
372 | Another possibility it to use the bond directly as bridge port. |
373 | This can be used to make the guest network fault-tolerant. | |
374 | ||
375 | .Example: Use a bond as bridge port | |
b4c06a93 WL |
376 | ---- |
377 | auto lo | |
378 | iface lo inet loopback | |
379 | ||
7a0d4784 | 380 | iface eno1 inet manual |
b4c06a93 | 381 | |
7a0d4784 | 382 | iface eno2 inet manual |
b4c06a93 WL |
383 | |
384 | auto bond0 | |
470d4313 | 385 | iface bond0 inet manual |
5f05aad1 | 386 | bond-slaves eno1 eno2 |
7a39aabd AL |
387 | bond-miimon 100 |
388 | bond-mode 802.3ad | |
389 | bond-xmit-hash-policy layer2+3 | |
b4c06a93 WL |
390 | |
391 | auto vmbr0 | |
392 | iface vmbr0 inet static | |
33349b9f | 393 | address 10.10.10.2/24 |
7ea42266 | 394 | gateway 10.10.10.1 |
7a39aabd AL |
395 | bridge-ports bond0 |
396 | bridge-stp off | |
397 | bridge-fd 0 | |
b4c06a93 WL |
398 | |
399 | ---- | |
400 | ||
61105e42 | 401 | |
94fd8ea5 WL |
402 | VLAN 802.1Q |
403 | ~~~~~~~~~~~ | |
404 | ||
4d8af129 DM |
405 | A virtual LAN (VLAN) is a broadcast domain that is partitioned and |
406 | isolated in the network at layer two. So it is possible to have | |
407 | multiple networks (4096) in a physical network, each independent of | |
408 | the other ones. | |
409 | ||
61105e42 | 410 | Each VLAN network is identified by a number often called 'tag'. |
4d8af129 DM |
411 | Network packages are then 'tagged' to identify which virtual network |
412 | they belong to. | |
94fd8ea5 | 413 | |
94fd8ea5 | 414 | |
4d8af129 DM |
415 | VLAN for Guest Networks |
416 | ^^^^^^^^^^^^^^^^^^^^^^^ | |
94fd8ea5 | 417 | |
4d8af129 DM |
418 | {pve} supports this setup out of the box. You can specify the VLAN tag |
419 | when you create a VM. The VLAN tag is part of the guest network | |
a22d7c24 | 420 | configuration. The networking layer supports different modes to |
4d8af129 | 421 | implement VLANs, depending on the bridge configuration: |
94fd8ea5 | 422 | |
4d8af129 | 423 | * *VLAN awareness on the Linux bridge:* |
94fd8ea5 | 424 | In this case, each guest's virtual network card is assigned to a VLAN tag, |
4d8af129 | 425 | which is transparently supported by the Linux bridge. |
a22d7c24 | 426 | Trunk mode is also possible, but that makes configuration |
94fd8ea5 WL |
427 | in the guest necessary. |
428 | ||
429 | * *"traditional" VLAN on the Linux bridge:* | |
430 | In contrast to the VLAN awareness method, this method is not transparent | |
431 | and creates a VLAN device with associated bridge for each VLAN. | |
a22d7c24 SR |
432 | That is, creating a guest on VLAN 5 for example, would create two |
433 | interfaces eno1.5 and vmbr0v5, which would remain until a reboot occurs. | |
94fd8ea5 | 434 | |
4d8af129 DM |
435 | * *Open vSwitch VLAN:* |
436 | This mode uses the OVS VLAN feature. | |
437 | ||
a22d7c24 | 438 | * *Guest configured VLAN:* |
4d8af129 DM |
439 | VLANs are assigned inside the guest. In this case, the setup is |
440 | completely done inside the guest and can not be influenced from the | |
441 | outside. The benefit is that you can use more than one VLAN on a | |
442 | single virtual NIC. | |
443 | ||
444 | ||
445 | VLAN on the Host | |
446 | ^^^^^^^^^^^^^^^^ | |
94fd8ea5 | 447 | |
4d8af129 DM |
448 | To allow host communication with an isolated network. It is possible |
449 | to apply VLAN tags to any network device (NIC, Bond, Bridge). In | |
450 | general, you should configure the VLAN on the interface with the least | |
94fd8ea5 WL |
451 | abstraction layers between itself and the physical NIC. |
452 | ||
453 | For example, in a default configuration where you want to place | |
454 | the host management address on a separate VLAN. | |
455 | ||
94fd8ea5 | 456 | |
038dc7df | 457 | .Example: Use VLAN 5 for the {pve} management IP with traditional Linux bridge |
94fd8ea5 WL |
458 | ---- |
459 | auto lo | |
460 | iface lo inet loopback | |
461 | ||
462 | iface eno1 inet manual | |
463 | ||
464 | iface eno1.5 inet manual | |
465 | ||
466 | auto vmbr0v5 | |
467 | iface vmbr0v5 inet static | |
33349b9f | 468 | address 10.10.10.2/24 |
94fd8ea5 | 469 | gateway 10.10.10.1 |
7a39aabd AL |
470 | bridge-ports eno1.5 |
471 | bridge-stp off | |
472 | bridge-fd 0 | |
94fd8ea5 WL |
473 | |
474 | auto vmbr0 | |
475 | iface vmbr0 inet manual | |
7a39aabd AL |
476 | bridge-ports eno1 |
477 | bridge-stp off | |
478 | bridge-fd 0 | |
94fd8ea5 WL |
479 | |
480 | ---- | |
481 | ||
038dc7df AD |
482 | .Example: Use VLAN 5 for the {pve} management IP with VLAN aware Linux bridge |
483 | ---- | |
484 | auto lo | |
485 | iface lo inet loopback | |
486 | ||
487 | iface eno1 inet manual | |
488 | ||
489 | ||
490 | auto vmbr0.5 | |
491 | iface vmbr0.5 inet static | |
33349b9f | 492 | address 10.10.10.2/24 |
038dc7df AD |
493 | gateway 10.10.10.1 |
494 | ||
495 | auto vmbr0 | |
496 | iface vmbr0 inet manual | |
7a39aabd AL |
497 | bridge-ports eno1 |
498 | bridge-stp off | |
499 | bridge-fd 0 | |
500 | bridge-vlan-aware yes | |
038dc7df AD |
501 | ---- |
502 | ||
94fd8ea5 WL |
503 | The next example is the same setup but a bond is used to |
504 | make this network fail-safe. | |
505 | ||
038dc7df | 506 | .Example: Use VLAN 5 with bond0 for the {pve} management IP with traditional Linux bridge |
94fd8ea5 WL |
507 | ---- |
508 | auto lo | |
509 | iface lo inet loopback | |
510 | ||
511 | iface eno1 inet manual | |
512 | ||
513 | iface eno2 inet manual | |
514 | ||
515 | auto bond0 | |
516 | iface bond0 inet manual | |
5f05aad1 | 517 | bond-slaves eno1 eno2 |
7a39aabd AL |
518 | bond-miimon 100 |
519 | bond-mode 802.3ad | |
520 | bond-xmit-hash-policy layer2+3 | |
94fd8ea5 WL |
521 | |
522 | iface bond0.5 inet manual | |
523 | ||
524 | auto vmbr0v5 | |
525 | iface vmbr0v5 inet static | |
33349b9f | 526 | address 10.10.10.2/24 |
94fd8ea5 | 527 | gateway 10.10.10.1 |
7a39aabd AL |
528 | bridge-ports bond0.5 |
529 | bridge-stp off | |
530 | bridge-fd 0 | |
94fd8ea5 WL |
531 | |
532 | auto vmbr0 | |
533 | iface vmbr0 inet manual | |
7a39aabd AL |
534 | bridge-ports bond0 |
535 | bridge-stp off | |
536 | bridge-fd 0 | |
94fd8ea5 WL |
537 | |
538 | ---- | |
539 | ||
024d3706 SI |
540 | Disabling IPv6 on the Node |
541 | ~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
542 | ||
543 | {pve} works correctly in all environments, irrespective of whether IPv6 is | |
544 | deployed or not. We recommend leaving all settings at the provided defaults. | |
545 | ||
546 | Should you still need to disable support for IPv6 on your node, do so by | |
547 | creating an appropriate `sysctl.conf (5)` snippet file and setting the proper | |
548 | https://www.kernel.org/doc/Documentation/networking/ip-sysctl.txt[sysctls], | |
549 | for example adding `/etc/sysctl.d/disable-ipv6.conf` with content: | |
550 | ||
551 | ---- | |
552 | net.ipv6.conf.all.disable_ipv6 = 1 | |
553 | net.ipv6.conf.default.disable_ipv6 = 1 | |
554 | ---- | |
555 | ||
556 | This method is preferred to disabling the loading of the IPv6 module on the | |
557 | https://www.kernel.org/doc/Documentation/networking/ipv6.rst[kernel commandline]. | |
558 | ||
0bcd1f7f DM |
559 | //// |
560 | TODO: explain IPv6 support? | |
470d4313 | 561 | TODO: explain OVS |
0bcd1f7f | 562 | //// |