为什么启动脚本无法在 AWS EC2 实例中显示 Hello World

Question

下面的脚本有什么问题？\n我无法访问该站点并显示“无法访问此站点\xe2\x80\x99”错误

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 #!/bin/bash\n# Use this for your user data (script from top to bottom)\n# install httpd (Linux 2 version)\nyum update -y\nyum install -y httpd.service\nsystemctl start httpd.service\nsystemctl enable httpd\necho "<h1>Hello World from $(hostname -f)</h1>" > /var/www/html/index.html\n

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Answer 1

正确的UserData是（一开始也有空间）：

#!/bin/bash
# Use this for your user data (script from top to bottom)
# install httpd (Linux 2 version)
yum update -y
yum install -y httpd
systemctl start httpd
systemctl enable httpd
echo "<h1>Hello World from $(hostname -f)</h1>" > /var/www/html/index.html

您还需要确保实例位于公共子网中、具有公共 IP 且其安全组允许连接到端口 80。