rabbitMQ常用命令及常见错误

一、常用命令

rabbitmq-server -detached 启动RabbitMQ服务 rabbitmqctl stop 关闭RabbitMQ服务 rabbitmqctl start_app 启动RabbitMQ应用，而不是服务 rabbitmqctl stop_app 停止 rabbitmqctl status 查看状态 rabbitmqctl add_user mq 123456 新增账户 rabbitmqctl set_user_tags mq administrator 给账户设置角色 rabbitmq-plugins enable rabbitmq_management 启用管理插件 rabbitmqctl cluster_status 集群状态 rabbitmqctl forget_cluster_node rabbit@rabbit3 节点摘除 rabbitmqctl reset application重置 rabbitmqctl set_cluster_name rabbit@rabbit1 修改集群名称 rabbitmqctl join_cluster rabbit@rabbit1 --ram 以ram形式加入集群 rabbitmqctl change_cluster_node_type ram 更改为ram模式 rabbitmq-plugins enable rabbitmq_tracing 启用日志插件 rabbitmq-plugins disable rabbitmq_tracing 停用日志插件 rabbitmqctl trace_on -p [virtual host] 启用日志监控 rabbitmqctl trace_off -p [virtual host] 停用用日志监控 rabbitmqctl set_policy -p [virtual host] TTL ".*" '{"message-ttl":60000}' --apply-to queues 设置消息生命周期，表示60s rabbitmqctl set_policy -p [virtual host] expiry ".*" '{"expires":1800000}' --apply-to queues 设置队列生命周期，表示30分钟

二、常见错误

1.若启动时报错ERROR: node with name “rabbit” already running on “localhost”，则

[root@orcldb sbin]# ps aux|grep erl root 12262 0.0 0.0 44728 772 ? S 17:10 0:00 /usr/lib64/erlang/erts-10.7.1/bin/epmd -daemon root 12383 0.3 0.3 5466696 77204 ? Sl 17:10 0:15 /usr/lib64/erlang/erts-10.7.1/bin/beam.smp -W w -A 128 -MBas ageffcbf -MHas ageffcbf -MBlmbcs 512 -MHlmbcs 512 -MMmcs 30 -P 1048576 -t 5000000 -stbt db -zdbbl 128000 -K true -- -root /usr/lib64/erlang -progname erl -- -home /root -- -pa /usr/local/xiaoll/rabbitMQ/rabbitmq_server-3.7.25/ebin -noshell -noinput -s rabbit boot -sname rabbit@orcldb -boot start_sasl -kernel inet_default_connect_options [{nodelay,true}] -sasl errlog_type error -sasl sasl_error_logger false -rabbit lager_log_root "/usr/local/xiaoll/rabbitMQ/rabbitmq_server-3.7.25/var/log/rabbitmq" -rabbit lager_default_file "/usr/local/xiaoll/rabbitMQ/rabbitmq_server-3.7.25/var/log/rabbitmq/rabbit@orcldb.log" -rabbit lager_upgrade_file "/usr/local/xiaoll/rabbitMQ/rabbitmq_server-3.7.25/var/log/rabbitmq/rabbit@orcldb_upgrade.log" -rabbit feature_flags_file "/usr/local/xiaoll/rabbitMQ/rabbitmq_server-3.7.25/var/lib/rabbitmq/mnesia/rabbit@orcldb-feature_flags" -rabbit enabled_plugins_file "/usr/local/xiaoll/rabbitMQ/rabbitmq_server-3.7.25/etc/rabbitmq/enabled_plugins" -rabbit plugins_dir "/usr/local/xiaoll/rabbitMQ/rabbitmq_server-3.7.25/plugins" -rabbit plugins_expand_dir "/usr/local/xiaoll/rabbitMQ/rabbitmq_server-3.7.25/var/lib/rabbitmq/mnesia/rabbit@orcldb-plugins-expand" -os_mon start_cpu_sup false -os_mon start_disksup false -os_mon start_memsup false -mnesia dir "/usr/local/xiaoll/rabbitMQ/rabbitmq_server-3.7.25/var/lib/rabbitmq/mnesia/rabbit@orcldb" -kernel inet_dist_listen_min 25672 -kernel inet_dist_listen_max 25672 -noshell -noinput -- root 12514 0.0 0.0 4300 536 ? Ss 17:10 0:00 erl_child_setup 1024 root 18668 0.0 0.0 112648 956 pts/0 S+ 18:25 0:00 grep --color=auto erl [root@orcldb sbin]# [root@orcldb sbin]# [root@orcldb sbin]# kill -9 12383

2.若出现以下错误

[root@node01 rabbitMQ]# rpm -ivh erlang-22.3.2-1.el7.x86_64.rpm 警告：erlang-22.3.2-1.el7.x86_64.rpm: 头V4 RSA/SHA1 Signature, 密钥 ID 6026dfca: NOKEY 错误：依赖检测失败： libcrypto.so.10(OPENSSL_1.0.2)(64bit) 被 erlang-22.3.2-1.el7.x86_64 需要

则升级 openssl-libs-1.0.2k-19.el7.x86_64.rpm（下载地址：http://rpmfind.net/linux/centos/7.7.1908/os/x86_64/Packages/openssl-libs-1.0.2k-19.el7.x86_64.rpm），再安装Erlang

[root@node01 rabbitMQ]# rpm -ivh openssl-libs-1.0.2k-19.el7.x86_64.rpm --force 警告：openssl-libs-1.0.2k-19.el7.x86_64.rpm: 头V3 RSA/SHA256 Signature, 密钥 ID f4a80eb5: NOKEY 准备中... ################################# [100%] 正在升级/安装... 1:openssl-libs-1:1.0.2k-19.el7 ################################# [100%]

3.脑裂（因网络中断或其他原因导致连接断开，又重新连上时）

问题错误信息（管理界面首页）

Network partition detected

Mnesia reports that this RabbitMQ cluster has experienced a network partition. There is a risk of losing data. Please read RabbitMQ documentation about network partitions and the possible solutions.

1.修改配置文件

[root@node01 sbin]# vi ../etc/rabbitmq/rabbitmq.conf

2.增加以下配置

#暂停少数 cluster_partition_handling=pause_minority