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--- apps:rabbitmq:setup_a_rabbitmq-cluster [2021-05-08 10:34] – created Manuel Frei
+++ apps:rabbitmq:setup_a_rabbitmq-cluster [2023-02-01 21:00] (current) – Manuel Frei
@@ Line 1: / Line 1: @@
 ====== Setup a RabbitMQ-Cluster ======
-FIXME Work in Progress!
+====== Environment Information ======
-====== Goal ======
+  * 3 Nodes (mb1, mb2, mb3)
+  * Domain: int.example.org
-  * 3 Nodes (mb1, mb2, mb3), based on CentOS8
+  * Cluster name: mb.int.example.org
+  * Based on Rocky Linux 8
 ====== Prepare Repository ======
@@ Line 73: / Line 74: @@
 metadata_expire=300
 </code>
+Update the cache. Accept the required keys from packetcloud.io and github.com.
+<code>
+dnf makecache
+</code>
+====== Install rabbitmq-server ======
+Execute on all nodes.
+Install the RabbitMQ-Server with all dependencies.
+<code>
+dnf install rabbitmq-server
+</code>
+Start the RabbitMQ-Server on system startup.
+<code>
+systemctl enable rabbitmq-server.service
+</code>
+====== Set the Erlang Cookie ======
+Execute on mb1.
+All nodes in the cluster must have the same erlang cookie. We copy it fro mb1 to the other nodes.
+<code>
+scp /var/lib/rabbitmq/.erlang.cookie mb2:/var/lib/rabbitmq/.erlang.cookie
+scp /var/lib/rabbitmq/.erlang.cookie mb3:/var/lib/rabbitmq/.erlang.cookie
+</code>
+====== Create Config File ======
+[[https://github.com/rabbitmq/rabbitmq-server/blob/v3.8.x/deps/rabbit/docs/rabbitmq.conf.example]]
+<code>
+vim /etc/rabbitmq/rabbitmq.conf
+</code>
+Example configuration file with transport security.
+<code>
+# Defaults
+num_acceptors.tcp   = 10
+handshake_timeout   = 10000
+channel_max         = 2048
+# AMQP
+listeners.tcp.default = 5672
+# AMQP with TLS
+listeners.ssl.default = 5671
+ssl_options.cacertfile = /etc/rabbitmq/chain.crt
+ssl_options.certfile   = /etc/rabbitmq/mb1.int.example.org.crt
+ssl_options.keyfile    = /etc/rabbitmq/mb1.int.example.org.key
+ssl_options.verify     = verify_none
+ssl_options.fail_if_no_peer_cert = false
+ssl_options.versions.1 = tlsv1.3
+ssl_options.versions.2 = tlsv1.2
+# Management
+management.ssl.port       = 15672
+management.ssl.cacertfile = /etc/rabbitmq/chain.crt
+management.ssl.certfile   = /etc/rabbitmq/mb1.int.example.org.crt
+management.ssl.keyfile    = /etc/rabbitmq/mb1.int.example.org.key
+management.ssl.versions.1 = tlsv1.3
+management.ssl.versions.2 = tlsv1.2
+# Cluster
+cluster_name = mb.int.example.org
+cluster_partition_handling = autoheal
+cluster_formation.peer_discovery_backend = classic_config
+cluster_formation.classic_config.nodes.1 = rabbit@mb1
+cluster_formation.classic_config.nodes.2 = rabbit@mb2
+cluster_formation.classic_config.nodes.3 = rabbit@mb3
+# Promometheus
+#prometheus.tcp.port = 15692
+#prometheus.ssl.port = 15691
+#prometheus.return_per_object_metrics = false
+#prometheus.path = /metrics
+</code>
+<code>
+scp /etc/rabbitmq/rabbitmq.conf mb2:/etc/rabbitmq/
+scp /etc/rabbitmq/rabbitmq.conf mb3:/etc/rabbitmq/
+</code>