centos8安裝RabbitMQ
一、安裝erlang
# 新增倉庫
curl -s https://packagecloud.io/install/repositories/rabbitmq/erlang/script.rpm.sh | sudo bash
Detected operating system as centos/8.
# 安裝erlang
dnf install erlang
二、匯入金鑰
rpm --import https://github.com/rabbitmq/signing-keys/releases/download/2.0/rabbitmq-release-signing-key.asc
三、在/etc/yum.repos.d目錄下新增rabbitmq.repo檔案，內容如下：
[bintray-rabbitmq-server]
name=bintray-rabbitmq-rpm
baseurl=https://dl.bintray.com/rabbitmq/rpm/rabbitmq-server/v3.8.x/el/8/
gpgcheck=0
repo_gpgcheck=0
enabled=1
四、下載rabbitmq
wget https://github.com/rabbitmq/rabbitmq-server/releases/download/v3.8.1/rabbitmq-server-3.8.1-1.el8.noarch.rpm
--2019-12-21 03:03:48-- https://github.com/rabbitmq/rabbitmq-server/releases/download/v3.8.1/rabbitmq-server-3.8.1-1.el8.noarch.rpm
五、安裝rabbitmq
dnf install rabbitmq-server-3.8.1-1.el8.noarch.rpm
六、設定開機起動
chkconfig rabbitmq-server on
七、起動、停止命令
/sbin/service rabbitmq-server start
/sbin/service rabbitmq-server stop
八、啓動外掛
rabbitmq-plugins enable rabbitmq_management
九、使用http://ip:15672登錄，預設使用者爲guest,密碼爲guest
十、解決rabbitmq使用guest登陸報錯User can only log in via localhost
這是因爲rabbitmq從3.3.0開始禁止使用guest/guest許可權通過除localhost外的存取，解除的辦法也有，就是找到[rabbitmq安裝目錄]\ebin\rabbit.app
（一般我們yum安裝完rabbitmq後，不知道安裝到什麼地方了，其實是安裝到下面 下麪的路徑/usr/lib/rabbitmq/lib）
找到loopback_users，像我上面一樣，將「guest「刪掉，重新啓動服務就好了
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附：CentOS8 關閉防火牆，禁用防火牆
檢視狀態
systemctl status firewalld.service
開啓防火牆
systemctl start firewalld.service
關閉防火牆
systemctl stop firewalld.service
開啓防火牆
systemctl enable firewalld.service
禁用防火牆
systemctl disable firewalld.service
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重新啓動網絡卡
nmcli c reload
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