5.5.12. Switching to a dual-interface configuration
5.5.12.1. Introduction
In single-interface configuration, the SSH connection for managing the GCap and the VPN communication are handled by the gcp0
interface.
In dual-interface configuration:
the VPN communication is controlled by the
gcp0
interfacethe SSH connection for GCap management is handled by the
gcp1
This procedure outlines the switchover from a single-interface configuration to a dual-interface configuration.
Important
The user will lose the session if the connection between the GCap and the user's PC is made remotely via SSH.
This is because in dual-interface, the link via SSH is on the `gcp1`
interface.
However, after running this command, this link will be disabled and the interface to be used will be `gcp0`
.
In order to avoid this disconnection, connect to the GCap:
either by a direct connection (connect directly to the server)
or by a HTTP remote connection (iDRAC function for a Dell server)
or by a remote connection to the CLI in SSH via the iDRAC interface in serial port redirection mode
5.5.12.2. Prerequisites
User: setup
Commands used in this procedure:
5.5.12.3. Preliminary operations
as appropriate, refer to:
Stop the detection engine (see monitoring-engine)
5.5.12.4. Procedure for displaying the gcp0
interface configuration
Enter the following command.
(gcap-cli) show network-config gcp0
Validate.
The system displaying the
gcp0
interface configuration.Depending on the single or dual interface configuration, the information is different.
The two cases are listed below.
Dual-interface configuration
The VPN communication is controlled by the gcp0
interface.
The SSH connection for GCap management is handled by the gcp1
interface.
In this case, the system displays:
Interface gcp0 configuration (VPN):
- IP Address: X.X.X.X
- Mask: 255.255.255.0
- Gateway: X.X.X.X
The VPN field indicates that the current configuration is dual-interface.
The absence of the SSH parameter on the gcp0
interface indicates that the gcp1
interface is managing the SSH.
conclusion: the current configuration is dual-interface.
In this case, there is nothing to do.
Single-interface configuration
SSH and VPN connections are handled by the gcp0
interface.
In this case, the system displays:
Interface gcp0 configuration (VPN / SSH):
- IP Address: X.X.X.X
- Mask: 255.255.255.0
- Gateway: X.X.X.X
The VPN/ SSH field indicates that the current configuration is single-interface.
In this case, continue with the following procedure.
5.5.12.5. Procedure for switching from single to dual interface configuration
enter the
set network-config ssh gcp1
command followed by the network parameters of thegcp1
interface.Note
Example
set network-config gcp1 ip-address 192.168.1.2 gateway 192.168.1.254 mask 255.255.255.0_
Validate.
(gcap-cli) set network-config ssh gcp1 SSH has been set to interface gcp1 Do you want to apply this new configuration? (y/N)
Press y and then confirm.
Applying configuration... 00% Generating interfaces configuration [OK] 09% Generating network configuration [OK] 18% Generating sshd configuration [OK] 27% Reconfiguring network [OK] 36% Reconfiguring firewall [OK] 45% Notifying new network addresses [OK] 54% Restarting sshd service [OK] 63% Restarting rsyslog service [OK] 72% Restarting GCenter-xfer-daemon service [OK] 81% Restarting heartbeat service [OK] 90% Restarting netdata service [OK] Procedure completed with success
The system shows the progress and displays the message - Procedure completed with success, to indicate that the switch to dual interface was successful.
Rewire the GCap network cables if necessary.