适用环境：
- 所有主机具有相同的用户名和密码
实现方式：
- 通过ansible hosts 文件读取主机列表
- 通过expect 自动应答
脚本出处：
github kubeasz\tools
#!/bin/bash
# 此脚本为批量部署服务器ssh key使用
#set -x
# check args count
if test $# -ne 3; then
echo -e "\nUsage: $0 < hosts file > < username > < password >\n"
exit 1
fi
# check hosts file
hosts_file=$1
if ! test -e $hosts_file; then
echo "[ERROR]: Can't find hosts file"
exit 1
fi
username=$2
password=$3
# check sshkey file
sshkey_file=~/.ssh/id_rsa.pub
if ! test -e $sshkey_file; then
expect -c "
spawn ssh-keygen -t rsa
expect \"Enter*\" { send \"\n\"; exp_continue; }
"
fi
# get hosts list
hosts=$(ansible -i $hosts_file all --list-hosts | awk 'NR>1')
echo "======================================================================="
echo "hosts: "
echo "$hosts"
echo "======================================================================="
ssh_key_copy()
{
# delete history
sed "/$1/d" -i ~/.ssh/known_hosts
# start copy
expect -c "
set timeout 100
spawn ssh-copy-id $username@$1
expect {
\"yes/no\" { send \"yes\n\"; exp_continue; }
\"*assword\" { send \"$password\n\"; }
\"already exist on the remote system\" { exit 1; }
}
expect eof
"
}
# auto sshkey pair
for host in $hosts; do
echo "======================================================================="
# check network
ping -i 0.2 -c 3 -W 1 $host >& /dev/null
if test $? -ne 0; then
echo "[ERROR]: Can't connect $host"
exit 1
fi
# /etc/hosts中存在 该ip信息时
cat /etc/hosts | grep -v '^#' | grep $host >& /dev/null
if test $? -eq 0; then
hostaddr=$(cat /etc/hosts | grep -v '^#' | grep $host | awk '{print $1}')
hostname=$(cat /etc/hosts | grep -v '^#' | grep $host | awk '{print $2}')
ssh_key_copy $hostaddr
ssh_key_copy $hostname
else
ssh_key_copy $host
fi
echo ""
done