hadoop启动时，报ssh: Could not resolve hostname now.: No address associated with hostname

[root@hadoop001 hadoop]# start-all.sh 
This script is Deprecated. Instead use start-dfs.sh and start-yarn.sh
Starting namenodes on [Java HotSpot(TM) Client VM warning: You have loaded library /usr/local/hadoop/hadoop-2.5.2/lib/native/libhadoop.so.1.0.0 which might have disabled stack guard. The VM will try to fix the stack guard now.
It's highly recommended that you fix the library with 'execstack -c ', or link it with '-z noexecstack'.
hadoop001]
sed: -e expression #1, char 6: unknown option to `s'
guard.: ssh: Could not resolve hostname guard.: Name or service not known
-c: Unknown cipher type 'cd'
root@hadoop001's password: now.: ssh: Could not resolve hostname now.: No address associated with hostname
noexecstack'.: ssh: Could not resolve hostname noexecstack'.: Name or service not known
might: ssh: Could not resolve hostname might: Temporary failure in name resolution
HotSpot(TM): ssh: Could not resolve hostname HotSpot(TM): Temporary failure in name resolution
VM: ssh: Could not resolve hostname VM: Temporary failure in name resolution
loaded: ssh: Could not resolve hostname loaded: Temporary failure in name resolution
You: ssh: Could not resolve hostname You: Temporary failure in name resolution
Client: ssh: Could not resolve hostname Client: Temporary failure in name resolution
library: ssh: Could not resolve hostname library: Temporary failure in name resolution
have: ssh: Could not resolve hostname have: Temporary failure in name resolution
Java: ssh: Could not resolve hostname Java: Temporary failure in name resolution
which: ssh: Could not resolve hostname which: Temporary failure in name resolution
warning:: ssh: Could not resolve hostname warning:: Temporary failure in name resolution
have: ssh: Could not resolve hostname have: Temporary failure in name resolution
disabled: ssh: Could not resolve hostname disabled: Temporary failure in name resolution
The: ssh: Could not resolve hostname The: Temporary failure in name resolution
stack: ssh: Could not resolve hostname stack: Temporary failure in name resolution
VM: ssh: Could not resolve hostname VM: Temporary failure in name resolution
will: ssh: Could not resolve hostname will: Temporary failure in name resolution
try: ssh: Could not resolve hostname try: Temporary failure in name resolution
to: ssh: Could not resolve hostname to: Temporary failure in name resolution
fix: ssh: Could not resolve hostname fix: Temporary failure in name resolution
the: ssh: Could not resolve hostname the: Temporary failure in name resolution
guard: ssh: Could not resolve hostname guard: Temporary failure in name resolution
or: ssh: Could not resolve hostname or: Temporary failure in name resolution
you: ssh: Could not resolve hostname you: Temporary failure in name resolution
recommended: ssh: Could not resolve hostname recommended: Temporary failure in name resolution
it: ssh: Could not resolve hostname it: Temporary failure in name resolution
fix: ssh: Could not resolve hostname fix: Temporary failure in name resolution
stack: ssh: Could not resolve hostname stack: Temporary failure in name resolution
that: ssh: Could not resolve hostname that: Temporary failure in name resolution
It's: ssh: Could not resolve hostname It's: Temporary failure in name resolution
highly: ssh: Could not resolve hostname highly: Temporary failure in name resolution
with: ssh: Could not resolve hostname with: Temporary failure in name resolution
',: ssh: Could not resolve hostname ',: Temporary failure in name resolution
the: ssh: Could not resolve hostname the: Temporary failure in name resolution
'-z: ssh: Could not resolve hostname '-z: Temporary failure in name resolution
library: ssh: Could not resolve hostname library: Temporary failure in name resolution
link: ssh: Could not resolve hostname link: Temporary failure in name resolution
with: ssh: Could not resolve hostname with: Temporary failure in name resolution
'execstack: ssh: Could not resolve hostname 'execstack: Temporary failure in name resolution