Network Connections
A network connections schema provides a comprehensive overview
of the network. It allows for quick identification of network issues,
making diagnosing and resolving connection problems easier.
If an issue arises and you see error messages indicating that one
component can't connect to another, refer to the connection table
to identify the failing connection. First, verify that the connections
are intact by logging into the controller or the replication agent
and checking the connection for the specific scenario.
Single-node Acura
Controller traffic
| Initiator |
Target |
Port |
Data flow |
Description |
| Operator |
Controller |
tcp/443 |
UI/API |
User access |
| Operator |
Controller |
tcp/4443 |
UI/API |
User access for initial configuration |
| Controller |
Controller |
tcp/443 |
Control only |
Controller API calls |
| Controller |
Controller |
tcp/4443 |
Control only |
Initial configuration API/UI |
| Controller |
Controller |
tcp/6443 |
Control only |
Kubernetes API for cluster coordination |
| Controller |
Controller |
udp/12201 |
Initiator→ Target |
Logs |
Replication (initial and incremental)
| Initiator |
Target |
Port |
Data flow |
Description |
| Controller |
Target cloud APIs |
tcp/* |
Control only |
Target cloud API calls |
| Replication agent |
Controller |
tcp/443 |
Initiator→ Target |
Control, Heartbeat and data transfer |
| Replication agent |
Controller |
udp/12201 |
Initiator→ Target |
Logs |
| Replication agent |
Source cloud APIs |
tcp/* |
Target→ Initiator |
External replication agents only |
| Controller |
Cloud Agent |
tcp/80 |
Initiator→ Target |
Control and data transfer |
| Controller |
File/object storage |
tcp/* |
Initiator→ Target |
Data transfer, Backup only |
| Cloud agent |
Controller |
tcp/443 |
Control only |
Heartbeat |
Recovery
| Initiator |
Target |
Port |
Data flow |
Description |
| Controller |
Target cloud APIs |
tcp/* |
Control only |
Target cloud API calls |
| Controller |
Cloud Agent |
tcp/80 |
Control only |
Control |
| Cloud agent |
Controller |
tcp/443 |
Control only |
Heartbeat |
| Cloud agent |
Controller |
udp/12201 |
Logs |
Logs |
| Controller |
File/object storage |
tcp/* |
Target→ Initiator |
Data transfer, Backup only |
| Failback agent |
Controller |
tcp/443 |
Target→ Initiator |
Data transfer during Failback |
| Failback agent |
Controller |
udp/12201 |
Logs |
Logs |
Failback
| Initiator |
Target |
Port |
Data flow |
Description |
| Failback agent |
Controller |
tcp/443 |
Control only |
Control and Heatbeat |
| Failback agent |
Controller |
tcp/443 |
Target→ Initiator |
Data flow |
| Failback agent |
Controller |
tcp/12201 |
Initiator→ Target |
Logs |
| Controller |
Cloud Agent |
tcp/80 |
Target→ Initiator |
Control and data flow |
| Failback agent |
Source cloud APIs |
tcp/* |
Control only |
Source cloud API calls |
HA Acura
Controller traffic
| Initiator |
Load Balancer |
Target |
Port |
Data flow |
Description |
| Operator |
Public |
Controller nodes |
tcp/443 |
UI/API |
User access |
| Operator |
Public |
Controller nodes |
tcp/4443 |
UI/API |
User access for initial configuration |
| Controller nodes |
Private |
Controller nodes |
tcp/443 |
Control only |
Controller API calls |
| Controller nodes |
Private |
Controller nodes |
tcp/4443 |
Control only |
Initial configuration API/UI |
| Controller nodes |
Private |
Controller nodes |
tcp/6443 |
Control only |
Kubernetes API for cluster coordination |
| Controller nodes |
Private |
Controller nodes |
udp/12201 |
Initiator→ Target |
Logs |
Replication (initial and incremental)
| Initiator |
Load Balancer |
Target |
Port |
Data flow |
Description |
| Controller nodes |
No |
Target cloud APIs |
tcp/* |
Control only |
Target cloud API calls |
| Replication agent |
Public |
Controller nodes |
tcp/443 |
Initiator→ Target |
Control, Heartbeat and data transfer |
| Replication agent |
Public |
Controller nodes |
udp/12201 |
Initiator→ Target |
Logs |
| Replication agent |
No |
Source cloud APIs |
tcp/* |
Target→ Initiator |
External replication agents only |
| Controller nodes |
No |
Cloud Agent |
tcp/80 |
Initiator→ Target |
Control and data transfer |
| Controller nodes |
No |
File/object storage |
tcp/* |
Initiator→ Target |
Data transfer, Backup only |
| Cloud agent |
Private |
Controller nodes |
tcp/443 |
Control only |
Heartbeat |
Recovery
| Initiator |
Load Balancer |
Target |
Port |
Data flow |
Description |
| Controller nodes |
No |
Target cloud APIs |
tcp/* |
Control only |
Target cloud API calls |
| Controller nodes |
No |
Cloud Agent |
tcp/80 |
Control only |
Control |
| Cloud agent |
Private |
Controller nodes |
tcp/443 |
Control only |
Heartbeat |
| Cloud agent |
Private |
Controller nodes |
udp/12201 |
Logs |
Logs |
| Controller nodes |
No |
File/object storage |
tcp/* |
Target→ Initiator |
Data transfer, Backup only |
| Failback agent |
Public |
Controller nodes |
tcp/443 |
Target→ Initiator |
Data transfer during Failback |
| Failback agent |
Public |
Controller nodes |
udp/12201 |
Logs |
Logs |
Failback
| Initiator |
Load Balancer |
Target |
Port |
Data flow |
Description |
| Failback agent |
Public |
Controller nodes |
tcp/443 |
Control only |
Control and Heatbeat |
| Failback agent |
Public |
Controller nodes |
tcp/443 |
Target→ Initiator |
Data flow |
| Failback agent |
Public |
Controller nodes |
tcp/12201 |
Initiator→ Target |
Logs |
| Controller nodes |
No |
Cloud Agent |
tcp/80 |
Target→ Initiator |
Control and data flow |
| Failback agent |
No |
Source cloud APIs |
tcp/* |
Control only |
Source cloud API calls |