Docker 容器中“TERM environment variable not set.”问题解决

　　在查容器内部资源利用情况时候，发现top命令无法使用，报错“TERM environment variable not set.”。从网上找到了解决方案，如下。

[root@localhost ~]# docker exec -ti redis /bin/bash
[root@9bf53a30e849 /]# top
TERM environment variable not set.
[root@9bf53a30e849 /]# echo $TERM
dumb
[root@9bf53a30e849 /]# export TERM=dumb
[root@9bf53a30e849 /]# top
top - :: up  days, :,   users,  load average: 8.75, 8.61, 8.53
Tasks:   total,    running,   sleeping,    stopped,    zombie
%Cpu(s):  1.7 us,  0.3 sy, 12.5 ni, 85.6 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st
KiB Mem : +total, +free,   used,  buff/cache
KiB Swap:   total,   free,         used. +avail Mem 

   PID USER      PR  NI    VIRT    RES    SHR S  %CPU %MEM     TIME+ COMMAND
      root                   S   0.0  0.0   :04.54 run.sh
     nagios                  S   0.0  0.0   :50.39 nrpe
    root                    S   0.0  0.0   :38.39 crond
    root                   S   0.0  0.0   :00.00 sshd
    root                  S   0.0  0.0 :39.77 LiveDistribute.
    root                  S   0.0  0.0 :06.00 LiveDistribute.
    root                  S   0.0  0.0 :44.28 LiveDistribute.
    root                  S   0.0  0.0 :00.33 LiveDistribute.
    root                  S   0.0  0.0 :23.64 LiveDistribute.
    root                  S   0.0  0.0  :13.00 LiveDistribute.
    root                  S   0.0  0.0  :30.31 LiveDistribute.
    root                  S   0.0  0.0  :12.71 LiveDistribute.
    root                  S   0.0  0.0  :25.46 LiveDistribute.
    root                   S   0.0  0.0 :00.03 keepBusinessPro
    root                    S   0.0  0.0   :00.00 startTaskManage
    root          .893g .079g   S   0.0  0.9 :57.20 java
   root                   S   0.0  0.0   :00.02 bash
  root                   S   0.0  0.0   :00.02 bash
  root                   S   0.0  0.0   :00.00 vi
  root                   S   0.0  0.0   :00.02 bash
  root                    S   0.0  0.0   :00.00 startTaskProces
  root          .458g    S   0.0  0.5   :24.31 java
  root                      S   0.0  0.0   :00.00 sleep
  root                   R   0.0  0.0   :00.00 top
  root                   S   0.0  0.0   :00.02 bash
 root                   S   0.0  0.0   :00.04 bash
 root                   S   0.0  0.0   :00.02 bash
 root                   S   0.0  0.0   :00.01 vi