nfs安裝與配置（debian）
好吧，這個錯誤浪費了我今天幾個小時的時間，必須把它記錄下來。
問題是這樣的，在啟動更新了portmap，exportfs，一些沒問題后，在做/etc/init.d/nfs-kernel-server restart 出現(xiàn)
/etc/init.d/nfs-kernel-server start
Exporting directories for NFS kernel daemon
exportfs: /etc/exports [1]:
Neither 'subtree_check' or 'no_subtree_check' specified for export
"foobar".
Assuming default behaviour ('no_subtree_check').
NOTE: this default has changed since nfs-utils version 1.0.x
.
Starting NFS kernel daemon: nfsd
Not starting: portmap daemon is not running (warning).
警告提示portmap is not running
好吧，檢查一下portmap
/home/mnt/index# ps aux | grep portmap
daemon 31478 0.0 0.0 2052 624 ? Ss 13:59 0:00 /sbin/portmap
portmap的狀態(tài)已經(jīng)是running，在googling后，發(fā)現(xiàn)網(wǎng)上有人說是
This is the problem, portmap is not actually running, causing rpc.statd
看來問題還是出現(xiàn)rpc上，最主要的進(jìn)程rpc.mountd無法啟動
好吧，接下來打開/etc/init.d/nfs-kernel-server這個啟動腳本進(jìn)行查看
# See if portmap or rpcbind are running
(cat </dev/null >/dev/tcp/localhost/111) 2>/dev/null
RET=$?
if [ $RET != 0 ]; then
echo
log_warning_msg "Not starting: portmap daemon is not running"
exit 0
fi
看來問題就出來這個，什么叫“/dev/tcp/localhost/111”，還是googling，網(wǎng)上有人說
I find that this is a bashism, but the init-script is marked as a bash script at the
top:
!/bin/bash
再man Bash，發(fā)現(xiàn)
Bash, as packaged for Debian, does not support using the /dev/tcp and /dev/udp files
應(yīng)該很清楚了，如果按照這里的分析，那么我們需要對上面的這個啟動腳本進(jìn)行一下修改就可以完成我們的目的，最直接的就是把exit 0注釋掉，另外說一點，這個腳本也有些寫得不大合理，既然是log_warning_msg，一個warning，就不應(yīng)該直接的exit 0