AWS常見問題
阿新 • • 發佈：2018-02-23
fig ifcfg-eth pri 顯示 com blog base 3.1 amazon
Disconnected: No supported authentication methods available(server sent: publickey,gssapi-keyex,gssapi-with-mic)
用Centos 7 AMI創建了EC2 Instance，Putty連接時報這個錯誤，原因是用戶名錯了，Centos 7的用戶名不是ec2-user，也不是root，是centos。
我的網站為何顯示空白頁面？
ELB/ALB 有一個參數Idle timeout，默認為60秒，當執行一個請求時，如果後臺執行超時就會顯示空白頁面。
用Centos 7 AMI創建了EC2 Instance，Putty連接時報這個錯誤，原因是用戶名錯了，Centos 7的用戶名不是ec2-user，也不是root，是centos。
Error: Host key not found, Permission denied (publickey), or Authentication failed, permission denied
- Redhat 7 如何設置DNS
編輯文件 /etc/sysconfig/network-scripts/ifcfg-eth0
修改其中的PEERDNS項
PEERDNS="no"
然後增加DNS，如：
DNS1="10.184.13.14"
DNS2="10.184.13.4"
重啟系統後，文件/etc/resolv.conf中會自動增加DNS配置（如只在此文件中配置DNS，重啟後會丟失）
4.Install CFN script for Centos7
#!/bin/bash # Setup CentOS 7 host as AMI # Update base OS update, and install EPEL repo and Python Pip sudo yum -y update sudo yum –y install epel-release sudo yum -y install python-pip # Install Python add-ons: sudo pip install pystache sudo pip install argparse sudo pip install python-daemon sudo pip install requests # Install CFN-BootStrap from source curl -sSL https://s3.amazonaws.com/cloudformation-examples/aws-cfn-bootstrap-latest.tar.gz | sudo tar -xpf -C - /opt cd /opt/aws-cfn-bootstrap-1.4/ sudo python setup.py build sudo python setup.py install # Configure CFN sudo ln -s /usr/init/redhat/cfn-hup /etc/init.d/cfn-hup sudo chmod 775 /usr/init/redhat/cfn-hup cd /opt sudo mkdir aws cd aws sudo mkdir bin ln -s /usr/bin/cfn-hup /opt/aws/bin/cfn-hup
用easy_install更簡單：
# easy_install --script-dir /opt/aws/bin https://s3.amazonaws.com/cloudformation-examples/aws-cfn-bootstrap-latest.tar.gz安裝新版本的easy_install
# curl -O https://bootstrap.pypa.io/ez_setup.py
# python ez_setup.pyAdding aws-cfn-bootstrap (CloudFormation helper scripts) to custom Linux AMIs
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AWS常見問題