一: 目的.
现有服务器用户,完整迁移到一台新服务器.
二: 环境:
源: 117
cat /etc/redhat-release
CentOS release 6.9 (Final)
rpm -qa rsync
rsync-3.0.6-12.el6.x86_64
目的114
cat /etc/redhat-release
CentOS Linux release 7.2.1511 (Core)
三:
117:
export UGIDLIMIT=500 //设置一个变量, 新建的uid 从500开始.
awk -v LIMIT=$UGIDLIMIT -F: ‘($3>=LIMIT) && ($3!=65534)‘ /etc/passwd > /root/move/passwd.mig
awk -v LIMIT=$UGIDLIMIT -F: ‘($3>=LIMIT) && ($3!=65534)‘ /etc/group > /root/move/group.mig
awk -v LIMIT=$UGIDLIMIT -F: ‘($3>=LIMIT) && ($3!=65534) {print $1}‘ /etc/passwd | tee - |egrep -f - /etc/shadow > /root/move/shadow.mig
cp /etc/gshadow /root/move/gshadow.mig
rsync -e ssh -avpr /root/move/ [email protected]:/tmp/temp // 把旧服务器的4个文件, copy至新服务器上.
rsync -e ssh -avpr /home [email protected]:/ //把旧服务器上的home整个目录,copy到新服务器上.
本例不考虑/var/spool/mail
四: 114:
30 cat passwd.mig >> /etc/passwd
31 cat group.mig >> /etc/group
33 cat shadow.mig >> /etc/shadow
34 cp gshadow.mig /etc/gshadow
[[email protected] home]# ls -sail /etc/{passwd,group,shadow,gshadow}
135184942 4 -rw-r--r--. 1 root root 731 Aug 15 12:38 /etc/group
135184896 4 ----------. 1 root root 509 Aug 15 12:39 /etc/gshadow
135411669 4 -rw-r--r--. 1 root root 1598 Aug 15 12:38 /etc/passwd
135411670 4 ----------. 1 root root 1854 Aug 15 12:38 /etc/shadow
