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步骤3的自动化版本

news 2026/4/19 23:52:59

步骤2的自动化脚本方式：

采用的是consul-agent + consul-template的方式。即 consul-template负责动态拉取server端的配置，然后consul-agent端动态更新配置上报到server端，最终实现promethes数据动态更新

其实这种方案跟后面的方案5的升级版达到的效果是一样的。只不过方案5没用使用consul-agent

#!/bin/bash# ====================== 你的配置 ======================
CONSUL_SERVER="192.168.70.16"
HOSTNAME=$(hostname)
LOCAL_IP=$(hostname -I | awk '{print $1}')
# ======================================================set -e# 1. 安装依赖
apt update && apt install -y wget curl unzip# 2. 安装 node_exporter
cd /tmp
wget https://github.com/prometheus/node_exporter/releases/download/v1.8.2/node_exporter-1.8.2.linux_amd64.tar.gz
tar zxf node_exporter-1.8.2.linux_amd64.tar.gz
cp node_exporter-1.8.2.linux_amd64/node_exporter /usr/local/bin/cat > /etc/systemd/system/node_exporter.service <<EOF
[Unit]
Description=node_exporter
[Service]
ExecStart=/usr/local/bin/node_exporter
Restart=always
[Install]
WantedBy=multi-user.target
EOFsystemctl daemon-reload
systemctl enable --now node_exporter# 3. 安装 Consul Agent
wget https://releases.hashicorp.com/consul/1.15.4/consul_1.15.4_linux_amd64.zip
unzip -o consul_1.15.4_linux_amd64.zip
cp consul /usr/local/bin/mkdir -p /etc/consul.d /var/lib/consulcat > /etc/consul.d/consul.hcl <<EOF
data_dir = "/var/lib/consul"
client_addr = "0.0.0.0"
retry_join = ["${CONSUL_SERVER}"]
bind_addr = "${LOCAL_IP}"
node_name = "${HOSTNAME}"
enable_local_script_checks = true
EOFcat > /etc/systemd/system/consul.service <<EOF
[Unit]
Description=Consul Agent
After=network.target
[Service]
ExecStart=/usr/local/bin/consul agent -config-dir=/etc/consul.d
Restart=always
User=root
[Install]
WantedBy=multi-user.target
EOFsystemctl daemon-reload
systemctl enable --now consul# 4. 安装 consul-template（从 KV 拉模板）
wget https://releases.hashicorp.com/consul-template/0.39.0/consul-template_0.39.0_linux_amd64.zip
unzip -o consul-template_0.39.0_linux_amd64.zip
cp consul-template /usr/local/bin/mkdir -p /etc/consul-template# 5. 配置从 KV 拉取模板，生成 agent 服务文件
cat > /etc/consul-template/config.hcl <<EOF
consul {address = "${CONSUL_SERVER}:8500"
}template {# 从 Consul KV 读取模板source      = "kv://config/templates/node_exporter.ctmpl"# 生成到 Consul Agent 目录destination = "/etc/consul.d/node_exporter.json"# 渲染后自动让 agent 加载command     = "consul reload"wait {min = 2smax = 5s}
}
EOFcat > /etc/systemd/system/consul-template.service <<EOF
[Unit]
Description=consul-template
After=network.target consul.service[Service]
ExecStart=/usr/local/bin/consul-template -config=/etc/consul-template/config.hcl
Restart=always
Environment="HOSTNAME=${HOSTNAME}"
Environment="LOCAL_IP=${LOCAL_IP}"
User=root[Install]
WantedBy=multi-user.target
EOFsystemctl daemon-reload
systemctl enable --now consul-templateecho "============================================="
echo "✅ 部署完成！终极架构已启动！"
echo "📌 模板来源：Consul KV"
echo "📌 服务注册：Consul Agent"
echo "📌 修改 KV 模板 → 自动全机更新！"
echo "============================================="