init ubuntu lucid image: set ip address

最新推荐文章于 2025-12-01 11:23:18 发布

原创最新推荐文章于 2025-12-01 11:23:18 发布 · 162 阅读

0 ·

CC 4.0 BY-SA版权

文章标签：

#awk #大数据

云计算专栏收录该内容

11 篇文章

订阅专栏

本文介绍了一段用于自动设置Eucalyptus镜像主机名和IP地址的Shell脚本，确保在运行Hadoop前正确配置网络信息。脚本解析主机名，获取IP地址，并将其写入主机文件，适用于自动化部署流程。

#/bin/sh

echo "running cloud-init..."

HOSTNAME=`hostname`

IP_TAG=`echo $HOSTNAME | awk -F "-" '{print $1}'`
if [ IP_TAG != "ip" ]
 then
        echo "not a eucalyptus image, exit"
        exit 1;
fi

IP=`echo $HOSTNAME | awk -F "-" '{print $2"."$3"."$4"."$5}'`
#echo -e "\n$IP $HOSTNAME\n"

IP_EXISTS=`grep -c "$IP" /etc/hosts`

if [ $IP_EXISTS = "0" ]
 then
        sudo sh -c "echo '$IP $HOSTNAME' >> /etc/hosts"
        echo "$IP added to /etc/hosts file"
fi

When we want to run hadoop on eucalyptus image, it need set ip address to the hostname first. The image default hostname is like ip-172.18.1.3, which carry ip address information.

So the above script will resolve hostname and set ip address in the host file.