序

      最近把博客从Tomcat转到Docker中，虽然期间遇见不少问题，但都解决了，使用Docker后，发现真的在配置上方便了很多，现想把solo变成自动升级，这样就不用每次升级都要手动升级，要实现这个功能首先，要写升级脚本，然后用Linux中的crontab进行定期执行此脚本。

升级脚本

      脚本程序如下：

 1	#!/bin/bash
 2	#
 3	# solo uograde script
 4	# Reference Guide :https://hacpai.com/article/1492881378588
 5	# Reference Guide :https://hacpai.com/article/1554909875932
 6	#
 7	echo "---------------------starting---------------------"  >> /home/timingscript/solologs.txt
 8	start_time=`date +'%Y-%m-%d %H:%M:%S'`
 9	docker pull b3log/solo
10	docker stop solo
11	docker rm solo
12	docker run --detach --name solo \
13	--network=host --env RUNTIME_DB="MYSQL"  --volume /opt/solo/skins/:/opt/solo/skins/ \
14	--env JDBC_USERNAME="root" \
15	--env JDBC_PASSWORD="XXXXXX"  \
16	--env JDBC_DRIVER="com.mysql.cj.jdbc.Driver" \
17	--env JDBC_URL="jdbc:mysql://localhost:3306/solo?useUnicode=yes&characterEncoding=UTF-8&useSSL=false&allowPublicKeyRetrieval=true&serverTimezone=UTC" \
18	b3log/solo --listen_port=8080 --server_scheme=https --server_host=aeneag.xyz --server_port=80 
19	if [[ $? == 0 ]];
20	   then
21		echo -e "Upgrade Successful "  >> /home/timingscript/solologs.txt
22	   else
23		echo -e "solo docker Errors in upgrade, please check "  >> /home/timingscript/solologs.txt
24	fi
25	end_time=`date +'%Y-%m-%d %H:%M:%S'`
26	start_seconds=$(date --date="$start_time" +%s);
27	end_seconds=$(date --date="$end_time" +%s);
28	echo "Upgrade time:"$((end_seconds-start_seconds))"s" >> /home/timingscript/solologs.txt
29	echo "start_time: $start_time ,end_time:$end_time" >> /home/timingscript/solologs.txt
30	echo "------------------------end------------------------"  >> /home/timingscript/solologs.txt
31

Crontab配置

      系统目前是Centos7.6，自带Crontab，不需安装，打开配置文件

1	vi /etc/crontab 

      打开后，默认如下：

 1	SHELL=/bin/bash
 2	PATH=/sbin:/bin:/usr/sbin:/usr/bin
 3	MAILTO=root
 4
 5	# For details see man 4 crontabs
 6
 7	# Example of job definition:
 8	# .---------------- minute (0 - 59)
 9	# |  .------------- hour (0 - 23)
10	# |  |  .---------- day of month (1 - 31)
11	# |  |  |  .------- month (1 - 12) OR jan,feb,mar,apr ...
12	# |  |  |  |  .---- day of week (0 - 6) (Sunday=0 or 7) OR sun,mon,tue,wed,thu,fri,sat
13	# |  |  |  |  |
14	# *  *  *  *  * user-name  command to be executed

      配置自动升级如下：

1	0 3 * * mon root /home/timingscript/soloupdate.sh

      设置为每个周的周一凌晨三点自动更新

测试

      脚本已进行测试，可以进行更新，每周周一定时更新待测试。