如何解决使用复制参数
我使用Docker Swarm部署3个RabbitMQ和Consul实例进行对等发现。
version: '3.7'
services:
rabbitmq-1:
image: rabbitmq:3.8.9-alpine
hostname: "rabbitmq-1"
environment:
- RABBITMQ_ERLANG_COOKIE="SECRET_COOKIE"
networks:
- prod-net
configs:
- source: rabbitmq-config
target: /etc/rabbitmq/rabbitmq.conf
- source: rabbitmq-plugins-config
target: /etc/rabbitmq/enabled_plugins
volumes:
- /shared/rabbitmq/1/config:/etc/rabbitmq
- /shared/rabbitmq/1/data:/var/lib/rabbitmq
deploy:
replicas: 1
rabbitmq-2:
image: rabbitmq:3.8.9-alpine
hostname: "rabbitmq-2"
environment:
- RABBITMQ_ERLANG_COOKIE="SECRET_COOKIE"
networks:
- prod-net
configs:
- source: rabbitmq-config
target: /etc/rabbitmq/rabbitmq.conf
- source: rabbitmq-plugins-config
target: /etc/rabbitmq/enabled_plugins
volumes:
- /shared/rabbitmq/2/config:/etc/rabbitmq
- /shared/rabbitmq/2/data:/var/lib/rabbitmq
deploy:
replicas: 1
rabbitmq-3:
image: rabbitmq:3.8.9-alpine
hostname: "rabbitmq-3"
environment:
- RABBITMQ_ERLANG_COOKIE="SECRET_COOKIE"
networks:
- prod-net
configs:
- source: rabbitmq-config
target: /etc/rabbitmq/rabbitmq.conf
- source: rabbitmq-plugins-config
target: /etc/rabbitmq/enabled_plugins
volumes:
- /shared/rabbitmq/3/config:/etc/rabbitmq
- /shared/rabbitmq/3/data:/var/lib/rabbitmq
deploy:
replicas: 1
networks:
consul-net:
external: true
name: prod-net
configs:
rabbitmq-config:
external: true
rabbitmq-plugins-config:
external: true
RabbitMQ通过其主机名向Consul注册,以便节点之间可以相互发现。因此,所有主机名必须在所有节点上解析。在上面的示例中,我为主机名和服务名使用了相同的值以实现此目的。但是我想使用更紧凑的方式通过使用replicas: 3
参数来表示集群。
version: '3.7'
services:
rabbitmq:
image: rabbitmq:3.8.9-alpine
hostname: "rabbitmq-{{.Task.Slot}}"
networks:
- prod-net
configs:
- source: rabbitmq-config
target: /etc/rabbitmq/rabbitmq.conf
- source: rabbitmq-plugins-config
target: /etc/rabbitmq/enabled_plugins
deploy:
replicas: 3
restart_policy:
condition: any
networks:
prod-net:
external: true
configs:
rabbitmq-config:
external: true
rabbitmq-plugins-config:
external: true
在这种情况下,令人遗憾的是,docker DNS无法再解析主机名,并且节点无法互相看到。有没有办法做到这一点?
编辑。1:
在rabbitmq-config中使用它们会产生以下错误:
cluster_formation.peer_discovery_backend = rabbit_peer_discovery_dns
cluster_formation.dns.hostname = tasks.rabbitmq
2020-10-15 22:06:01.573 [error] <0.272.0> attempted to contact: ['rabbit@rabbitmq-3','rabbit@rabbitmq-2']
2020-10-15 22:06:01.574 [error] <0.272.0> rabbit@rabbitmq-3:
2020-10-15 22:06:01.574 [error] <0.272.0> * unable to connect to epmd (port 4369) on rabbitmq-3: couldn't resolve hostname
2020-10-15 22:06:01.574 [error] <0.272.0> rabbit@rabbitmq-2:
2020-10-15 22:06:01.575 [error] <0.272.0> * unable to connect to epmd (port 4369) on rabbitmq-2: couldn't resolve hostname
Edit.2: 使用Consul对等发现的Rabbitmq.conf
# Credentials
default_user = admin
default_pass = Pa$$w0rd1
loopback_users.admin = false
vm_memory_high_watermark.absolute = 1024MiB
disk_free_limit.absolute = 5GB
loopback_users.guest = false
# TLS Support in RabbitMQ
listeners.ssl.default = 5671
# Disables non-TLS listeners,only TLS-enabled clients will be able to connect
listeners.tcp = none
ssl_options.cacertfile = /etc/rabbitmq/ca_certificate.pem
ssl_options.certfile = /etc/rabbitmq/server_certificate.pem
ssl_options.keyfile = /etc/rabbitmq/server_key.pem
ssl_options.password = Pa$$phr@se
ssl_options.verify = verify_peer
ssl_options.fail_if_no_peer_cert = true
# TLS Support in RabbitMQ UI
management.ssl.port = 15671
management.ssl.cacertfile = /etc/rabbitmq/ca_certificate.pem
management.ssl.certfile = /etc/rabbitmq/server_certificate.pem
management.ssl.keyfile = /etc/rabbitmq/server_key.pem
management.ssl.password = Pa$$phr@se
management.ssl.verify = verify_none
management.ssl.fail_if_no_peer_cert = false
management.ssl.honor_cipher_order = true
management.ssl.honor_ecc_order = true
management.ssl.client_renegotiation = false
management.ssl.secure_renegotiate = true
cluster_partition_handling = autoheal
# Consul peer discovery
cluster_formation.peer_discovery_backend = rabbit_peer_discovery_consul
# Consul host (hostname or IP address)
cluster_formation.consul.host = consul_client
# Service name (as registered in Consul) defaults to "rabbitmq"
cluster_formation.consul.svc = rabbitmq
# Compute service address (if not specify it below)
cluster_formation.consul.svc_addr_auto = true
cluster_formation.consul.use_longname = true
cluster_formation.consul.svc_ttl = 50
cluster_formation.consul.deregister_after = 100
cluster_formation.node_cleanup.only_log_warning = true
或使用DNS对等发现:
#DNS Peer Discovery
cluster_formation.peer_discovery_backend = rabbit_peer_discovery_dns
cluster_formation.dns.hostname = tasks.rabbitmq
版权声明:本文内容由互联网用户自发贡献,该文观点与技术仅代表作者本人。本站仅提供信息存储空间服务,不拥有所有权,不承担相关法律责任。如发现本站有涉嫌侵权/违法违规的内容, 请发送邮件至 dio@foxmail.com 举报,一经查实,本站将立刻删除。