We have too old istio version 1.4.3 so we are completely removing istio and installing the 1.12 version.
We uninstalled helm installed istio 1.4.3 with same helm template method, deleted all resources from istio-system namespace and also
deleted the istio-system. The new installation is done with istioctl command.
Everything is working with latest version but only following scenario is not working which was working correctly on 1.4.3 version.
namespace1 has sidecar injected and running all nodejs workloads. Workloads login to MYSQL via a mysql-proxy installed on namespace2(this backend namespace has no sidecar injected). mysql-proxy deployment connects to MYSQL VM to perform the read and write operations.
Pod inside namespace1 connects to mysql-proxy deployment with “mysql -u user -h proxysql-mysql.namespace2.svc.cluster.local -P 6033 -p”
, the connection stuck and doesn’t complete. Telnet at port 6033 works.
Destinationrule is as follows:
The mesh_policy is "ALLOW_ANY.
The connection stuck and doesn’t return error.The istio-proxy and istiod logs not generating any error with debug mode.
It would be great help if we can get some guidance to diagnose the issue.