RHEL7.2_X64定时计划任务到时间没有自动执行

1.检查计划任务服务是否启动
systemctl status crond.service

2.查看计划任务日志
tail -f /var/log/cron

3.date查看时间
date
Fri May 11 13:34:16 CST 2018
date -R
Fri, 11 May 2018 13:35:10 +0800

4.RHEL7.2_X64版本系统设置完计划任务后查看上面3种情况没发现什么问题，通过date查看时区也是CST，通过timedatectl命令来查看发现时区还是UTC
timedatectl | grep "Time zone"
Warning: Ignoring the TZ variable. Reading the system's time zone setting only.

   Time zone: UTC (UTC, +0000)

5.设置时区正确方法
tzselect命令
Please identify a location so that time zone rules can be set correctly.
Please select a continent or ocean.
1) Africa
2) Americas
3) Antarctica
4) Arctic Ocean
5) Asia
6) Atlantic Ocean
7) Australia
8) Europe
9) Indian Ocean
10) Pacific Ocean
11) none - I want to specify the time zone using the Posix TZ format.
#? 5（选择亚洲）

Please select a country.
1) Afghanistan 18) Israel 35) Palestine
2) Armenia 19) Japan 36) Philippines
3) Azerbaijan 20) Jordan 37) Qatar
4) Bahrain 21) Kazakhstan 38) Russia
5) Bangladesh 22) Korea (North) 39) Saudi Arabia
6) Bhutan 23) Korea (South) 40) Singapore
7) Brunei 24) Kuwait 41) Sri Lanka
8) Cambodia 25) Kyrgyzstan 42) Syria
9) China 26) Laos 43) Taiwan
10) Cyprus 27) Lebanon 44) Tajikistan
11) East Timor 28) Macau 45) Thailand
12) Georgia 29) Malaysia 46) Turkmenistan
13) Hong Kong 30) Mongolia 47) United Arab Emirates
14) India 31) Myanmar (Burma) 48) Uzbekistan
15) Indonesia 32) Nepal 49) Vietnam
16) Iran 33) Oman 50) Yemen
17) Iraq 34) Pakistan
#? 9（选择中国）

Please select one of the following time zone regions.
1) Beijing Time
2) Xinjiang Time
#? 1（选择北京时间）

The following information has been given:

China
Beijing Time

Therefore TZ='Asia/Shanghai' will be used.
Local time is now: Fri May 11 13:42:30 CST 2018.
Universal Time is now: Fri May 11 05:42:30 UTC 2018.
Is the above information OK?
1) Yes
2) No
#? 1（选择同意）

You can make this change permanent for yourself by appending the line
TZ='Asia/Shanghai'; export TZ
to the file '.profile' in your home directory; then log out and log in again.

Here is that TZ value again, this time on standard output so that you
can use the /usr/bin/tzselect command in shell scripts:
Asia/Shanghai

6.然后修改/etc/profile配置文件，添加
TZ='Asia/Shanghai'; export TZ
立即生效source /etc/profile

7.通过查看发现本地的时区文件还是UTC
ll /etc/localtime
lrwxrwxrwx. 1 root root 25 Dec 18 2015 /etc/localtime -> ../usr/share/zoneinfo/UTC

8.需要将上海的时区文件拷贝过去
cp /usr/share/zoneinfo/Asia/Shanghai /etc/localtime
cp: overwrite ‘/etc/localtime’? y

9.再次查看时区发现已经更改过来
timedatectl | grep "Time zone"
Warning: Ignoring the TZ variable. Reading the system's time zone setting only.

   Time zone: UTC (CST, +0800)