Prometheus结合Consul实现服务自动发现注册

一、环境规划和初始化

• 所有节点执行

[root@localhost ~]# hostnamectl set-hostname xxxx

systemctl stop firewalld && systemctl disable firewalld && systemctl status firewalld
systemctl stop NetworkManager && systemctl disable NetworkManager && systemctl status NetworkManager

sed -ri 's/SELINUX=enforcing/SELINUX=disabled/' /etc/selinux/config
setenforce 0 && getenforce

二、Consul集群部署

• 下载地址：https://www.consul.io/downloads

#consul节点服务器执行下面的命令
mkdir /opt/soft
cd /opt/soft
wget https://releases.hashicorp.com/consul/1.10.3/consul_1.10.3_linux_amd64.zip

#创建数据目录
mkdir -p /data/consul

unzip consul_1.10.3_linux_amd64.zip -d /usr/local/
cp /usr/local/consul /usr/local/bin/

#consul01节点
cat > /usr/lib/systemd/system/consul.service <<EOF
[Unit]
Description=Prometheus consul
After=local-fs.target network-online.target network.target
Wants=local-fs.target network-online.target network.target
[Service]
User=root
Group=root
Type=simple
ExecStart=consul agent -server -bootstrap-expect=3 -data-dir=/data/consul -client=0.0.0.0 -datacenter=consul -bind=192.168.66.130 -ui
# data-dir 数据目录
# datacenter 数据中心名
# -bind绑定网卡，解决主机多张网卡冲突无法绑定的问题
[Install]
WantedBy=multi-user.target
EOF


#consul02节点
cat > /usr/lib/systemd/system/consul.service <<EOF
[Unit]
Description=Prometheus consul
After=local-fs.target network-online.target network.target
Wants=local-fs.target network-online.target network.target
[Service]
User=root
Group=root
Type=simple
ExecStart=/usr/local/consul agent -server -bootstrap-expect=3 -data-dir=/data/consul -client=0.0.0.0 -datacenter=consul -bind=192.168.66.131 -ui -join=192.168.66.130
# data-dir 数据目录
# datacenter 数据中心名
# join 需要加入的server的ip，我这里是192.168.66.130
# -bind绑定网卡，解决主机多张网卡冲突无法绑定的问题
[Install]
WantedBy=multi-user.target
EOF


#consul03节点
cat > /usr/lib/systemd/system/consul.service <<EOF
[Unit]
Description=Prometheus consul
After=local-fs.target network-online.target network.target
Wants=local-fs.target network-online.target network.target
[Service]
User=root
Group=root
Type=simple
ExecStart=/usr/local/consul agent -server -bootstrap-expect=3 -data-dir=/data/consul -client=0.0.0.0 -datacenter=consul -bind=192.168.66.132 -ui -join=192.168.66.130
# data-dir 数据目录
# datacenter 数据中心名
# join 需要加入的server的ip，我这里是192.168.66.130
# -bind绑定网卡，解决主机多张网卡冲突无法绑定的问题
[Install]
WantedBy=multi-user.target
EOF

• 三台consul节点执行下面的命令

systemctl daemon-reload
systemctl start consul
systemctl enable consul
systemctl status consul

[root@consul01 ~]# consul operator raft list-peers

• 浏览器输入任意Consul节点IP加8500端口访问

二、Prometheus部署

三、Grafana部署

四、Consul集群负载