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Create a network with a dedicated server
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Create a network with a dedicated server

For your information

Some dedicated server configurations Chipcore Line cannot be added to the global router network because they do not have a port to connect to the private network. The availability of a private network port can be checked in control panel on the server page under the Ports tab.

  1. Create global router.
  2. Connect the network and subnet to the global router up to the dedicated server VLAN.
  3. Connect the network and subnet to the global router up to the cloud platform project.
  4. Assign IP addresses from the created subnets to the dedicated server.
  5. #write-routes-on-dedicated-server.
  6. Create a cloud database cluster: new or from a backup of an existing cloud database cluster.

See example of network organization between a dedicated server and a cloud database.

Example of network organization between a cloud database and a dedicated server⁠

If you need to configure private connectivity between a dedicated server in the SPB-1 pool and a new cloud database in the ru-2 pool:

  1. Create a global router.
  2. Connect two private subnets to the router — 192.168.0.0.0/29 with a gateway of 192.168.0.1 for the SPB-1 pool and 172.16.0.0.0/29 with a gateway of 172.16.0.1 for the ru-2 pool.
  3. Assign an address from the 192.168.0.0.0/29 subnet to a dedicated server, such as 192.168.0.2.
  4. Write routes on the dedicated server in the SPB-1 pool — to the 172.16.0.0.0/29 subnet via the 192.168.0.1 gateway.
  5. Create a new cloud database cluster on the 172.16.0.0.0/29 subnet.

Create a global router⁠

  1. In Control Panel, go to Network Services → Selectel Global Router.
  2. Click Create Router. Each account has a limit of five global routers.
  3. Enter the name of the router.
  4. Press Create.
  5. If the router was created with status ERROR or hung in one of the statuses, create a ticket.

Connect the network and subnet to the router to the VLAN of the dedicated server⁠

You can connect a new network to the router or an existing network if it is not already connected to any of the account's global routers.

  1. In Control Panel, go to Network Services → Selectel Global Router.

  2. Open the router page → Networks tab.

  3. Click Create Network.

  4. Enter a network name, this will only be used in the control panel.

  5. Select the Dedicated Servers service.

  6. Select pool.

  7. Select VLAN. If you want to network to an internal segment (Q-in-Q), specify its tag, a number between 2 and 4094. If there is already a network upstream of the VLAN, be sure to specify the Q-in-Q segment of that VLAN.

  8. Enter the subnet name — this will only be used in the control panel.

  9. Enter the CIDR — IP address and private subnet mask. You can enter a new subnet or an existing private server subnet, if it has not already been added to any of the global routers in the account. The subnetwork must meet the conditions:

    • belong to the RFC 1918 private address range of 10.0.0.0.0/8, 172.16.0.0.0/12, or 192.168.0.0.0/16;
    • have a size of at least /29, as three addresses will be occupied by Selectel network equipment;
    • Do not overlap with other subnets added to this router: The IP addresses of each subnet on the router must not overlap with the IP addresses of other subnets on the router;
    • if Managed Kubernetes nodes will be included in the global router network, the subnet must not overlap with the 10.250.0.0.0/16, 10.10.0.0.0/16, and 10.96.0.0.0/12 ranges. These subnets participate in the internal addressing of Managed Kubernetes, their use can cause conflicts in the global router network.

  10. If you specified the Q-in-Q tag, make sure to configure Q-in-Q. When configuring, use the subnet you specified in step 9.

  11. Enter the gateway IP or leave the first address from the subnet assigned by default. Do not assign this address to your devices to avoid disrupting your network.

  12. Enter service IPs or leave the last addresses from the subnet assigned by default. Do not assign these addresses to your devices to avoid disrupting your network.

  13. Click Create Network.

  14. Optional: check the network topology on the global router. In Control Panel, go to Network Services → Selectel Global Router. Open the page of the desired router and click Network Map.

Connect the network and subnet to the router before the cloud platform project⁠

For your information

If the cloud platform network is connected to a global router, you can only manage it on the global router page.

You can connect a new network to the router or an existing network if it is not already connected to any of the account's global routers.

  1. In Control Panel, go to Network Services → Selectel Global Router.

  2. Open the router page → Networks tab.

  3. Click Create Network.

  4. Enter a network name, this will only be used in the control panel.

  5. Select the Cloud Platform service.

  6. Select pool.

  7. Select project.

  8. Enter the subnet name — this will only be used in the control panel.

  9. Enter the CIDR — IP address and subnet mask. The subnetwork must meet the conditions:

    • belong to the RFC 1918 private address range of 10.0.0.0.0/8, 172.16.0.0.0/12, or 192.168.0.0.0/16;
    • have a size of at least /29, as three addresses will be occupied by Selectel network equipment;
    • Do not overlap with other subnets added to this router: The IP addresses of each subnet on the router must not overlap with the IP addresses of other subnets on the router;
    • if Managed Kubernetes nodes will be included in the global router network, the subnet must not overlap with the 10.250.0.0.0/16, 10.10.0.0.0/16, and 10.96.0.0.0/12 ranges. These subnets participate in the internal addressing of Managed Kubernetes, their use can cause conflicts in the global router network.

  10. Enter the gateway IP or leave the first address from the subnet assigned by default. Do not assign this address to your devices to avoid disrupting your network.

  11. Enter service IPs or leave the last addresses from the subnet assigned by default. Do not assign these addresses to your devices to avoid disrupting your network.

  12. Click Create Network.

  13. Optional: check the network topology on the global router. In Control Panel, go to Network Services → Selectel Global Router. Open the page of the desired router and click Network Map.

Assign an IP address to a dedicated server⁠

To work with the subnet created on the router, configure a local port on a dedicated server that is included in the global router network. On the port, assign an IP address from the private subnet you created on the global router for the corresponding pool.

  1. Connect to the server via SSH or via KVM-console.

  2. Open the netplan utility configuration file with the vi text editor:

    vi /etc/netplan/01-netcfg.yaml

  3. Add or change values for the network interface settings of the private network:

        <eth_name>:
                addresses: [<ip_address>/<mask>]

    Specify:

    • <eth_name> is the name of the network interface of the private network;
    • <ip_address>/<mask> — private IP address of the server with subnet mask, for example, 192.168.0.2/29.

  4. Press the ESC key.

  5. Exit the vi text editor with the changes saved:

    :wq

  6. Apply the configuration:

    netplan apply

  7. Optional: reboot the server.

Write routes on a dedicated server⁠

If you have created a new server and added it to an existing global router network, you do not need to specify routes. In this case, the server will be immediately available to other devices on the network.

If you are adding an existing server to a global router network, it must have static routes to all subnets with which you want connectivity.

  1. Connect to server.

  2. Open the CLI.

  3. Open the network configuration file:

    vi /etc/netplan/01-netcfg.yaml

  4. Locate the data block for the desired network interface.

  5. At the end of this block, add a route:

    routes:
      - to: <ip_address>/<mask>
        via: <gateway>

    Specify:

    • <ip_address>/<mask> — the subnet to which the route is needed, specifying the mask;
    • <gateway> is the gateway for the current server's subnet, which is specified on the global router.

  6. If you need to write multiple routes, add them sequentially in the same block, for example,

    routes:
    - to: 192.168.0.0.0/29
        via: 172.16.0.1
    - to: 192.168.q.0.0/29
        via: 172.16.0.1

  7. Save the file.

  8. Check the settings:

    sudo netplan try

  9. Apply the changes:

    netplan apply

Create a cloud database cluster⁠

  1. In Control Panel, go to Cloud Platform → Databases.

  2. Click Create Cluster.

  3. Enter the name of the cluster.

  4. Select a pool.

  5. Select the MySQL sync version. Once created, the version will not be able to be changed.

  6. Select node configurations:

    • fixed — configurations with different ratio of virtual processor cores, RAM and local disk;
    • arbitrary — free choice of the ratio of resources.

  7. For a fixed configuration, select configuration Line:

    • Standard Line;
    • HighFreq Line.

  8. Optional: check the Add 2 replicas checkbox. Replicas increase the fault tolerance of the cluster. MySQL sync clusters with replicas are subject to limitations.

  9. Select the subnet that you connected to the global router before the cloud platform project.

    You can limit the list of addresses from which access to the database cluster will be allowed.

  10. Optional: change DBMS settings by clicking Change. We recommend that you change the settings only when necessary — incorrect values can degrade cluster performance.

  11. Click Create Database Cluster. The cluster will be ready for operation when it moves to the ACTIVE status.