我这里有一个我制作的脚本，我正在尝试转换为使用键，但是我遇到了一些问题。当未为密钥指定密码短语时，该脚本运行良好，但是我希望每个服务器上的每个密钥都有不同的密码短语。但是，我使用期望命令完成此操作时遇到了一些问题。我已经复制了下面的原始脚本。任何建议将不胜感激。
#!/bin/bash
SERVERS="REMOTESERVER1 REMOTESERVER2"
KEYS="SECRET_KEY1 SECRET_KEY2"
MAILTO="EMAIL_TO"
HOSTNAME="$(hostname)"
MSG=""
ERROR=0
DIRERR=0
MSG="${MSG}n$(date) Starting Backup Engine"
for server in $SERVERS; do
MSG="${MSG}n$(date) Starting backup on $server"
#Check for backup directory for listed servers. Create if does not exists.
MSG="${MSG}n$(date) Checking backup folder structure"
if [ ! -d "/backup/${server}" ]; then
MSG="${MSG}n$(date) /backup/${server} does not exist... creating"
mkdir -p /backup/$server
DIRMKD="${DIRMKD}n$(date) /backup/${server}"
DIRERR=1
fi
#Check for accounts directory in the server backup folder.
if [ ! -d "/backup/${server}/accounts" ]; then
MSG="${MSG}n$(date) /backup/${server}/accounts does not exist... creating"
mkdir -p /backup/$server
DIRMKD="${DIRMKD}n$(date) /backup/${server}/accounts"
DIRERR=1
fi
#Check for dnszones folder in the server backup folder.
if [ ! -d "/backup/${server}/dnszones" ]; then
MSG="${MSG}n$(date) /backup/${server}/dnszones does not exist... creating"
mkdir -p /backup/$server/dnszones
DIRMKD="${DIRMKD}n$(date) /backup/${server}/dnszones"
DIRERR=1
fi
#Check for syslogs folder in the server backup folder.
if [ ! -d "/backup/${server}/syslogs" ]; then
MSG="${MSG}n$(date) /backup/${server}/syslogs does not exist... creating"
mkdir -p /backup/$server/syslogs
DIRMKD="${DIRMKD}n$(date) /backup/${server}/syslogs"
DIRERR=1
fi
#Check for syslogs/apache folder in the server backup folder.
if [ ! -d "/backup/${server}/syslogs/apache" ]; then
MSG="${MSG}n$(date) /backup/${server}/syslogs/apache does not exist... creating"
mkdir -p /backup/$server/syslogs/apache
DIRMKD="${DIRMKD}n$(date) /backup/${server}/syslogs/apache"
DIRERR=1
fi
#Check for syslogs/apache/domlogs folder in the server backup folder.
if [ ! -d "/backup/${server}/syslogs/cpanel" ]; then
MSG="${MSG}n$(date) /backup/${server}/syslogs/cpanel does not exist... creating"
mkdir -p /backup/$server/syslogs/cpanel
DIRMKD="${DIRMKD}n$(date) /backup/${server}/syslogs/cpanel"
DIRERR=1
fi
#Check for syslogs/apache/domlogs folder in the server backup folder.
if [ ! -d "/backup/${server}/syslogs/apache/domlogs" ]; then
MSG="${MSG}n$(date) /backup/${server}/syslogs/apache/domlogs does not exist... creating"
mkdir -p /backup/$server/syslogs/apache/domlogs
DIRMKD="${DIRMKD}n$(date) /backup/${server}/syslogs/apache/domlogs"
DIRERR=1
fi
if [ $DIRERR -eq 0 ]; then
MSG="${MSG}n$(date) Backup folder check complete"
else
MSG="${MSG}n$(date) Created new directories:${DIRMKD}"
fi
MSG="${MSG}n$(date) Backing up DNS Records"
rdiff-backup --force --tempdir=/home/tmp --remote-schema "ssh -C -p22 %s rdiff-backup --server" root@$server::/var/named/* /backup/$server/dnszones/
if [ $? -ne 0 ]; then
MSG="${MSG}n$(date) Could not complete DNS Zone backups for ${server}"
ERROR=1
continue
else
MSG="${MSG}n$(date) DNS Zones have been backed up"
fi
MSG="${MSG}n$(date) Backing up server logs"
#Backup /var/logs/*
rdiff-backup --force --tempdir=/home/tmp --remote-schema "ssh -C -p22 %s rdiff-backup --server" root@$server::/var/log/* /backup/$server/syslogs/
if [ $? -ne 0 ]; then
MSG="${MSG}n$(date) Could not complete server log backups for ${server}"
ERROR=1
continue
else
MSG="${MSG}n$(date) Server logs have been backed up"
fi
MSG="${MSG}n$(date) Backing up Apache logs"
#Backup /usr/local/apache/logs/*
rdiff-backup --force --tempdir=/home/tmp --remote-schema "ssh -C -p22 %s rdiff-backup --server" root@$server::/usr/local/apache/logs/* /backup/$server/syslogs/apache
if [ $? -ne 0 ]; then
MSG="${MSG}n$(date) Could not complete Apache log backups for ${server}"
ERROR=1
continue
else
MSG="${MSG}n$(date) Apaceh logs have been backed up"
fi
MSG="${MSG}n$(date) Backing up Apache Domlogs"
#Backup /usr/local/apache/domlogs/*
rdiff-backup --force --tempdir=/home/tmp --remote-schema "ssh -C -p22 %s rdiff-backup --server" root@$server::/usr/local/apache/domlogs/* /backup/$server/syslogs/apache/domlogs
if [ $? -ne 0 ]; then
MSG="${MSG}n$(date) Could not complete Apache Domlog backups for ${server}"
ERROR=1
continue
else
MSG="${MSG}n$(date) Apache Domlogs have been backed up"
fi
MSG="${MSG}n$(date) Backing up cPanel logs"
#Backup /usr/local/cpanel/logs/*
rdiff-backup --force --tempdir=/home/tmp --remote-schema "ssh -C -p22 %s rdiff-backup --server" root@$server::/usr/local/cpanel/logs/* /backup/$server/syslogs/cpanel
if [ $? -ne 0 ]; then
MSG="${MSG}n$(date) Could not complete cPanel log backups for ${server}"
ERROR=1
continue
else
MSG="${MSG}n$(date) CPanel logs have been backed up"
fi
MSG="${MSG}n$(date) Backing up accounts"
#Backup /backup/cpbackup/daily/*
rdiff-backup --tempdir=/home/tmp --remote-schema "ssh -C -p22 %s rdiff-backup --server" root@$server::/backup/cpbackup/daily/* /backup/$server/accounts
if [ $? -ne 0 ]; then
MSG="${MSG}n$(date) Could not complete account backups for ${server}"
ERROR=1
continue
else
MSG="${MSG}n$(date) Accounts have been backed up"
fi
MSG="${MSG}n$(date) Backup for ${server} completed"
#Delete anything older than one week from accounts while retaining server logs and DNS Zones.
MSG="${MSG}n$(date) Removing old files from account backups"
rdiff-backup --force --remove-older-than 7D /backup/$server/accounts/*
if [ $? -ne 0 ]; then
MSG="${MSG}n$(date) Could not remove old account backups"
ERROR=1
fi
done
MSG="${MSG}n$(date) Backups complete"
if [ $ERROR -eq 0 ]; then
echo -e "From: root@${HOSTNAME}nTo: ${MAILTO}nSubject: Backups completed on ${HOSTNAME}nDifferential backups completed successfully on ${HOSTNAME} at $(date)nn ${MSG}nn Available backups:n$(for server in $SERVERS; do echo -e "nn$server:"; rdiff-backup -l /backup/$server/ ; done )" | /usr/sbin/sendmail ${MAILTO}
else
echo -e "From: root@${HOSTNAME}nTo: ${MAILTO}nSubject: Failed backup on ${HOSTNAME}n${MSG}" | /usr/sbin/sendmail ${MAILTO}
fi
tl;dr
您希望使用 ssh-agent ，并ssh-add所需的每个键。如果您只是要在某个脚本中硬编码密钥，请不要向密钥添加密码短语，这完全违背了目的。