Accessing a RocketMQ Instance with SSL Enabled (TCP)

If SSL is enabled, data will be encrypted before transmission for enhanced security. This section describes how to use TCP to connect to a RocketMQ instance with SSL in CLI mode.

Intra-VPC access and public access differ only in the connection IP addresses and ports. For intra-VPC access, use port 8100. For public access, use port 8200.

The following describes only the procedure for public access. For intra-VPC access, replace the IP addresses with the actual ones.

Prerequisites

A RocketMQ instance has been created and you have obtained the connection addresses for private or public access.
Security group rules have been configured.
A topic has been created.
An ECS has been created. For intra-VPC access, ensure that its VPC, subnet, and security group configurations are the same as those of the RocketMQ instance.
JDK v1.8.111 or later has been installed, and related environment variables have been configured.

Accessing the Instance with CLI

Download the rocketmq-tutorial software package.

wget https://dms-demo.obs.ru-moscow-1.hc.sbercloud.ru/rocketmq-tutorial.zip

Decompress the rocketmq-tutorial package.
```
unzip rocketmq-tutorial.zip
```
(Optional) If ACL is enabled for the RocketMQ instance, authentication is required when you run the mqadmin command.
Switch to the directory where the decompressed software package is stored and add the following content to the conf/tools.yml file:
```
accessKey:*******
secretKey:*******
```
accessKey and secretKey are the username and secret key set on the Users page of the console.
Go to the rocketmq-tutorial/bin directory.
```
cd rocketmq-tutorial/bin
```
Create normal messages using the sample project.
```
JAVA_OPT=-Dtls.enable=true sh mqadmin sendMessage -n "${Connection addresses}" -t ${Topic name} -p "hello rocketmq"
```
Parameter description:
- Connection addresses: the Instance Address for private network access or Instance Address (Public Network) for public network access.
- Topic name: name of the topic created for the RocketMQ instance
In the following example, 100.xxx.xxx.89:8200;100.xxx.xxx.144:8200 are the metadata connection addresses for public network access to the RocketMQ instance, and topic-test is the topic name.
```
JAVA_OPT=-Dtls.enable=true sh mqadmin sendMessage -n "100.xxx.xxx.89:8200;100.xxx.xxx.144:8200" -t topic-test -p "hello rocketmq"
```
Press Ctrl+C to exit.
Retrieve normal messages using the sample project.
```
JAVA_OPT=-Dtls.enable=true sh mqadmin consumeMessage -n "${Connection addresses}" -t ${Topic name}
```
Parameter description:
- Connection addresses: the Instance Address for private network access or Instance Address (Public Network) for public network access.
- Topic name: name of the topic created for the RocketMQ instance
In the following example, 100.xxx.xxx.89:8200;100.xxx.xxx.144:8200 are the metadata connection addresses for public network access to the RocketMQ instance, and topic-test is the topic name.
```
JAVA_OPT=-Dtls.enable=true sh mqadmin consumeMessage -n "100.xxx.xxx.89:8200;100.xxx.xxx.144:8200" -t topic-test
```
To stop consuming messages, press Ctrl+C to exit.
Create messages with traces using the sample project.
```
JAVA_OPT=-Dtls.enable=true sh mqadmin sendMessage -n "${Connection addresses}" -t ${Topic name} -p "hello rocketmq" -m true
```
Parameter description:
- Connection addresses: the Instance Address for private network access or Instance Address (Public Network) for public network access.
- Topic name: name of the topic created for the RocketMQ instance
In the following example, 100.xxx.xxx.89:8200;100.xxx.xxx.144:8200 are the metadata connection addresses for public network access to the RocketMQ instance, and topic-test is the topic name.
```
JAVA_OPT=-Dtls.enable=true sh mqadmin sendMessage -n "100.xxx.xxx.89:8200;100.xxx.xxx.144:8200" -t topic-test -p "hello rocketmq" -m true
```
Press Ctrl+C to exit.
Retrieve messages and send the message traces using the sample project.
```
JAVA_OPT=-Dtls.enable=true sh mqadmin consumeMessage -n "${Connection addresses}" -t ${Topic name} -m true
```
Parameter description:
- Connection addresses: the Instance Address for private network access or Instance Address (Public Network) for public network access.
- Topic name: name of the topic created for the RocketMQ instance
In the following example, 100.xxx.xxx.89:8200;100.xxx.xxx.144:8200 are the metadata connection addresses for public network access to the RocketMQ instance, and topic-test is the topic name.
```
JAVA_OPT=-Dtls.enable=true sh mqadmin consumeMessage -n "100.xxx.xxx.89:8200;100.xxx.xxx.144:8200" -t topic-test -m true
```
Press Ctrl+C to exit.

Parent topic: Accessing an Instance

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