自动下载安装java
-
boot.sh：配置SSH远程免密登录，并将install.sh拷贝到远程主机执行
#!/bin/bash
SERVERS="mini3"
PASSWORD=huachao
BASE_SERVER=mini
auto_ssh_copy_id() {
expect -c "set timeout -1;
spawn ssh-copy-id $1;
expect {
*(yes/no)* {send -- yes\r;exp_continue;}
*assword:* {send -- $2\r;exp_continue;}
*(yes/no)* {send -- yes\r;exp_continue;}
eof {exit 0;}
}";
}
ssh_copy_id_to_all() {
for SERVER in $SERVERS
do
auto_ssh_copy_id $SERVER $PASSWORD
done
}
ssh_copy_id_to_all
for SERVER in $SERVERS
do
scp install.sh root@$SERVER:/root
ssh root@$SERVER /root/install.sh
done
-
install.sh：下载解压jdk-7u45-linux-x64.tar.gz，并配置java环境变量
#!/bin/bash
BASE_SERVER=mini1
yum install -y wget
wget $BASE_SERVER/soft/jdk-7u45-linux-x64.tar.gz
tar -zxvf jdk-7u45-linux-x64.tar.gz -C /usr/local
cat >> /etc/profile << EOF
export JAVA_HOME=/usr/local/jdk1.7.0_45
export PATH=\$PATH:\$JAVA_HOME/bin
EOF
~
执行上面脚本的环境和条件
- 在主机和每一台从机上安装expect
yum -y install expect
- 在主机和每一台从机上安装ssh_client(scp命令依赖ssh客户端)
yum -y install openssh-clients.x86_64
- 在主机上要先生成ssh的key
ssh-keygen
问题
- 问题1：expect:command not found
解决：yum -y install expect
- 问题2： WARNING: POSSIBLE DNS SPOOFING DETECTED!
出现这种问题可以是因为之前使用过命令ssh-copy-id对要远程连接的主机，现在该主机的IP发生了变化
解决： vi /root/.ssh/known_hosts, 删除掉那个主机对应的公钥，保存退出再连接就可以了
- 问题3：spawn ssh-copy-id mini1
/usr/bin/ssh-copy-id: ERROR: No identities found
未生成ssh的key
解决：在主机上执行：ssh-keygen
