在 Rancher 升级时，当存在环境变量时，未执行替换的分析解决

1、当存在环境变量时，未执行替换，文件 /etc/nginx/conf.d/pcs.conf 中的变量未被替换，/config/init/change.log 中存在替换记录，如图1

图1

2、查看容器日志，报错：sed: couldn’t open file ww/pcs/build/config.js: No such file or directory

2018/7/24 下午3:47:59PCS_CFG_NGINX_SERVER_NAME=wjdev2.chinamcloud.com
2018/7/24 下午3:47:59sed: -e expression #1, char 7: extra characters after command
2018/7/24 下午3:47:59PCS_CFG_NGINX_SERVER_NAME replace wjdev2.chinamcloud.com -> /etc/nginx/conf.d/pcs.conf
2018/7/24 下午3:47:59PCS_CFG_API_HOST_INFO=http://wjdev2.chinamcloud.com:8656
2018/7/24 下午3:47:59sed: -e expression #1, char 7: extra characters after command
2018/7/24 下午3:47:59PCS_CFG_API_HOST_INFO replace http://wjdev2.chinamcloud.com:8656 -> /etc/nginx/conf.d/pcs.conf
2018/7/24 下午3:47:59PCS_CFG_API_BASE_URL=/v1
2018/7/24 下午3:47:59sed: -e expression #1, char 7: extra characters after command
2018/7/24 下午3:47:59PCS_CFG_API_BASE_URL replace /v1 -> /etc/nginx/conf.d/pcs.conf
2018/7/24 下午3:47:59PCS_CFG_CALLBACK_LOGIN=https://cmclogin.chinamcloud.com/login/index?call_back=http://wjdev2.chinamcloud.com:8657/#/topic/add
2018/7/24 下午3:47:59sed: couldn't open file ww/pcs/build/config.js: No such file or directory
2018/7/24 下午3:47:59PCS_CFG_CALLBACK_LOGIN replace https://cmclogin.chinamcloud.com/login/index?call_back=http://wjdev2.chinamcloud.com:8657/#/topic/add -> /sobey/www/pcs/build/config.js
2018/7/24 下午3:47:59PCS_CFG_API_VERSION=0.0
2018/7/24 下午3:47:59sed: couldn't open file ww/pcs/build/config.js: No such file or directory
2018/7/24 下午3:47:59PCS_CFG_API_VERSION replace 0.0 -> /sobey/www/pcs/build/config.js
2018/7/24 下午3:47:59PCS_CFG_CMC_CONSOLE_URL=https://cmcconsole.chinamcloud.com
2018/7/24 下午3:47:59sed: couldn't open file ww/pcs/build/config.js: No such file or directory
2018/7/24 下午3:47:59PCS_CFG_CMC_CONSOLE_URL replace https://cmcconsole.chinamcloud.com -> /sobey/www/pcs/build/config.js
2018/7/24 下午3:47:59PCS_CFG_CMC_CONSOLE_HEADER_LEFT_CSS=/cmc/cmc_header_left.css
2018/7/24 下午3:47:59sed: couldn't open file ww/pcs/build/config.js: No such file or directory
2018/7/24 下午3:47:59PCS_CFG_CMC_CONSOLE_HEADER_LEFT_CSS replace /cmc/cmc_header_left.css -> /sobey/www/pcs/build/config.js
2018/7/24 下午3:47:59PCS_CFG_CMC_CONSOLE_HEADER_LEFT_JS=/cmc/cmc_header_left.js
2018/7/24 下午3:47:59sed: couldn't open file ww/pcs/build/config.js: No such file or directory
2018/7/24 下午3:47:59PCS_CFG_CMC_CONSOLE_HEADER_LEFT_JS replace /cmc/cmc_header_left.js -> /sobey/www/pcs/build/config.js
2018/7/24 下午3:47:59PCS_CFG_API_VERSION=0.0
2018/7/24 下午3:47:59sed: couldn't open file ww/pcs/build/gis/config.js: No such file or directory
2018/7/24 下午3:47:59PCS_CFG_API_VERSION replace 0.0 -> /sobey/www/pcs/build/gis/config.js
2018/7/24 下午3:47:59/config/init/cronlog.sh: line 4: LOG_NAME: unbound variable

3、PCS_CFG_CALLBACK_LOGIN=https://cmclogin.chinamcloud.com/login/index?call_back=http://wjdev2.chinamcloud.com:8657/#/topic/add ，其值中存在 #，因此为了防止冲突，需要将 # 替换为 @。且 sed -i” 替换为 sed -i “，缺少空格。

    env | grep "PCS_CFG_CALLBACK_LOGIN" || export PCS_CFG_CALLBACK_LOGIN="PCS_CFG_CALLBACK_LOGIN"
        sed -i "s@PCS_CFG_CALLBACK_LOGIN@$PCS_CFG_CALLBACK_LOGIN@g" $BUILD_CONFIG_PATH
        echo "PCS_CFG_CALLBACK_LOGIN replace $PCS_CFG_CALLBACK_LOGIN -> $BUILD_CONFIG_PATH"
        echo "PCS_CFG_CALLBACK_LOGIN replace $PCS_CFG_CALLBACK_LOGIN -> $BUILD_CONFIG_PATH" >> $DIR/change.log

4、文件 /etc/nginx/conf.d/pcs.conf 中的变量已被成功替换，如图2

图2