Create Consul部署说明

docs/Consul部署说明

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+##### 安装
+
+```bash
+# 使用yum部署consul
+yum install -y yum-utils
+yum-config-manager --add-repo https://rpm.releases.hashicorp.com/RHEL/hashicorp.repo
+yum -y install consul
+# 或者直接下RPM包安装
+wget https://rpm.releases.hashicorp.com/RHEL/7/x86_64/stable/consul-1.12.2-1.x86_64.rpm
+rpm -ivh ./consul-1.12.2-1.x86_64.rpm
+```
+
+##### 配置
+
+```bash
+vi /etc/consul.d/consul.hcl
+advertise_addr = "192.168.x.x" #可以先不加这行，如果启动有问题再加上，一般有多网卡需要配置这行，填写你的网卡IP
+data_dir = "/opt/consul"
+client_addr = "0.0.0.0"
+ui_config{
+  enabled = true
+}
+server = true
+bootstrap = true
+acl = {
+  enabled = true
+  default_policy = "deny"
+  enable_token_persistence = true
+}
+```
+
+##### 启动与鉴权配置
+
+```bash
+chown -R consul:consul /opt/consul  #注意下数据目录的权限。
+systemctl enable consul.service
+systemctl start consul.service
+# 获取登录密码
+consul acl bootstrap
+
+# 记录 SecretID，即为Consul登录的Token
+```