Symptoms
The task Provisioning "Panel_6_1" for APS application Plesk in VPS Panel fails with the output:
"code": 500,
"type": "Rest\\RestException",
"message": "Connection error: \"Failed connect to 203.0.113.2:6308; No error\r\n\". Was trying to connect to \"https://203.0.113.2:6308/aps/2/application/\".",
"stacktrace":
where 203.0.113.2 is the public IP address of the OA Management Node.
The node, where the VE got created, is running a kernel of 123.x series, lower than 123.6.
[root@vz01 ~]# uname -r
2.6.32-042stab123.3
Cause
A Virtuozzo kernel issue leads to malfunctioning VM network.
Resolution
Install the newest Virtuozzo kernel to avoid the issue (a node reboot is required):
# yum update