Login to Acronis Cyber Infrastructure (ACI) WebCP fails with the message Service unavailable:
Or in case of older ACI versions with the message Service disabled:
“Service unavailable/disabled” error on WebCP login attempt means that nginx service listen on port 8888 on the node, but local vstorage-ui-backend.service is not processing the requests.
Management node High Availability check
In case if Management node high availability (HA MN) is enabled, double-check which node is the primary one in configuration at the moment with CLI.
Check status of HA MN configuration using the following vinfra command:
# vinfra cluster ha show
it will be required to enter password of admin user for WebCP, example output:
- ha_cluster_location - address for WebCP login with High Availability Virtual IP (HA VIP);
- nodes and hci_hostnames - the list of nodes included into HA MN configuration;
- the node with is_primary: true attribute is the one currently running UI backend service;
- primary_node_location - address for WebCP login with direct IP of current primary MN;
- virtual_ips - HA Virtual IPs assigned on primary MN.
Verify the IPs and try login WebCP again using the HA VIP (ha_cluster_location) and direct IP of primary node (primary_node_location) .
HA VIPs are expected to be assigned on the loopback interface of the primary Management Node, can be checked by ip command:
# ip a l lo
In case of UI backend service issues vinfra command will be failing with 50X error, e.g.:
[root@aci-node-01 ~]# vinfra cluster ha show
Authentication user 'admin' on https://backend-api.svc.vstoragedomain:8888:
502 Server Error: Bad Gateway for url: https://backend-api.svc.vstoragedomain:8888/api/v2/login (Bad Gateway)
Proceed with further service status checks to investigate UI backend issue.
UI Backend status check
The service vstorage-ui-backend is expected to be enabled and active on the primary Management Node:
# systemctl is-enabled vstorage-ui-backend && systemctl is-active vstorage-ui-backend
For more details check service status:
# systemctl status vstorage-ui-backend
Example output on primary Management Node:
Example output on non-primary Management Node:
In case if service is in failed status, proceed with logs investigation.
UI Backend service logs
62963: Acronis Cyber Infrastructure: logs location
The following may be checked in case of UI backend service issues:
1. System log messages:
- journalctl -u vstorage-ui-backend
2. Management node logs:
3. HA MN related logs:
In case of issues with UI Backend service and assistance with resolving is required - contact Acronis Support with collected information and logs in accordance with the steps in this article.