This topic provides answers to commonly asked questions about ApsaraMQ for Kafka instances.
FAQ about billing
FAQ about networks
What do I do if the attempt to ping the endpoint of an ApsaraMQ for Kafka instance fails?
How do I connect an ECS instance in one zone to an ApsaraMQ for Kafka instance in another zone?
Can I access an ApsaraMQ for Kafka instance over the Internet?
How do I access an ApsaraMQ for Kafka instance by using a proxy?
Do I have to select the 172.16.0.0/12 CIDR block for the classic network?
Can I connect ApsaraMQ for Kafka instances in different VPCs?
Client errors
FAQ about message sending on clients
How do I determine whether a message is sent from the client?
How many connections to the broker can a producer establish?
Does the callback setting on the Java client affect the message sending speed?
Why does a PHP client experience a long delay when it sends a message?
What do I do if an error is reported on a client when I use ApsaraMQ for Kafka?
What do I do if the attempt to ping the endpoint of an ApsaraMQ for Kafka instance fails?
FAQ about message consumption on clients
What do I do if an exception occurs when a client connects to ApsaraMQ for Kafka for the first time?
Why does a consumer slowly pull messages from the broker or fail to pull messages from the broker?
What do I do if messages are accumulated when I use ApsaraMQ for Kafka?
What do I do if the "Not authorized to access group" error message is returned?
FAQ about instances
Which open source Apache Kafka versions are supported by ApsaraMQ for Kafka instances?
How can I obtain the VPC information required for deploying an instance?
What problems may occur if you upgrade Message Queue for Apache Kafka brokers?
Why am I unable to change the region or network type of the instance?
When are historical messages deleted from ApsaraMQ for Kafka?
How can I perform a quick test on the Message Queue for Apache Kafka broker?
Can I access an ApsaraMQ for Kafka instance over the Internet?
Can I connect ApsaraMQ for Kafka instances in different VPCs?
Do I have to select the 172.16.0.0/12 CIDR block for the classic network?
Why does it take so long to upgrade my Message Queue for Apache Kafka instance?
FAQ about topics
FAQ about groups
Why can a consumer group that does not appear in the console consume messages?
How do I determine which IP addresses are consuming messages?
Does the NFS attached to a consumer affect the message consumption speed?
Why am I unable to view the consumer information in the console?
Why is a partition consumed by multiple consumption threads?
Why does the Groups page display more consumer groups than I created?
Why is the Accumulated Messages value of a group 0 or empty?
FAQ about API calls
FAQ about monitoring and alerting
Why do I need to upgrade my instance to support monitoring and alerts?
What do I do if the value of the Status parameter of a monitoring item is No data?
Why can I view monitoring information with my Alibaba Cloud account, but cannot do so as a RAM user?
Why am I unable to log on to the instance with Message Queue for Apache Kafka deployed?