Shell -如何从for循环中的文件中提取和替换值
Shell -如何从for循环中的文件中提取和替换值
提问于 2018-09-24 16:42:10
我正在编写示例脚本，它将从码头容器中收集日志。
容器正在运行.NET核心应用程序(*.dll文件)，日志文件使用Nlog写入同一个目录(程序集文件所在的位置)。
#!/bin/bash
DATE=`date +%Y%m%d`
LOGPATH="/var/log/kbci-ocr"
LOGDIR="${LOGPATH}/LOG-${DATE}"
LOGERR="${LOGDIR}/err.log"
docker ps --format {{.ID}},{{.Image}} > docker_running.txt
file=docker_running.txt
for i in `cat $file`
do
echo "Checking log dir presence"
if [ ! -d $LOGDIR ]; then
mkdir -p $LOGDIR;
echo "Log dir created"
else
echo "Log dir exist"
fi
echo "Creating log dir for the current log saving iteration"
container=$(echo $i | cut -d"," -f1)
TARGETDIR="${LOGDIR}/${container}+$(date +%Y%m%d_%H%M%S)"
mkdir -p $TARGETDIR
echo "Copying log files from container ${container}"
imagename=$(echo $i | cut -d"," -f2 | cut -d"/" -f4 | cut -d":" -f1)
docker cp ${container}:/app/'\${imagename}_app.json' ${TARGETDIR}
docker cp ${container}:/app/'\${imagename}_errors.json' ${TARGETDIR}
docker cp ${container}:/app/'\${imagename}_sql.json' ${TARGETDIR}
docker cp ${container}:/app/'\${imagename}_webHost.json' ${TARGETDIR}
done
rm -rf docker_running.txt脚本应该做什么：
- 检查/var/log中的XXX目录，如果不存在，请创建
- 根据今天的日期在/var/log/XXX中创建一个新目录
- 对于每个正在运行的docker容器，使用容器散列(文本文件中的第一个值)和时间戳在基目录中创建一个目录(请参见p.2)
- 使用
docker cp命令和容器的图像名称(文本文件中的第二个值)从容器文件系统复制日志文件
这里有一个问题--如何从文本文件中获取第二个值并在shell脚本中替换它？
放置到文件中的docker的示例输出是：
sergey@023:~$ cat docker_running.txt
b0a6dbb31f4e,ecse00:5000/develop/client-api:latest
d80f5e5a2cf5,ecse00:5000/develop/document-uploader:latest
965e9b40a8d0,ecse00:5000/develop/data-analysis:latest
ef8a6bad36a7,ecse00:5000/develop/job-aggregator:latest
be4ccd899a61,ecse00:5000/develop/capture-plugin:latest第一个是容器ID，第二个(在冒号之后)是一个图像名称+标记，前面有停靠器注册地址。
我尝试了很多选择，但仍然不知道如何正确地编写脚本。
Upd:脚本似乎正在工作，最后一个问题是如何将图像名替换为docker cp命令：
sergey@ECSE00:~$ sh collect_logs.sh
Checking log dir presence
Log dir created
Creating log dir for the current log saving iteration
Copying log files from container f44d14d08b61
Error: No such container:path: f44d14d08b61:/app/\${imagename@Q}_app.json
Error: No such container:path: f44d14d08b61:/app/\${imagename@Q}_errors.json
Error: No such container:path: f44d14d08b61:/app/\${imagename@Q}_sql.json
Error: No such container:path: f44d14d08b61:/app/\${imagename@Q}_webHost.json
Checking log dir presence
Log dir exist
Creating log dir for the current log saving iteration
Copying log files from container 13f0069c207a
client-api
Error: No such container:path: 13f0069c207a:/app/\${imagename@Q}_app.json
Error: No such container:path: 13f0069c207a:/app/\${imagename@Q}_errors.json
Error: No such container:path: 13f0069c207a:/app/\${imagename@Q}_sql.json
Error: No such container:path: 13f0069c207a:/app/\${imagename@Q}_webHost.json
Checking log dir presence
Log dir exist
Creating log dir for the current log saving iteration
Copying log files from container 8ff648fa8b04
document-uploader
Error: No such container:path: 8ff648fa8b04:/app/\${imagename@Q}_app.json
Error: No such container:path: 8ff648fa8b04:/app/\${imagename@Q}_errors.json
Error: No such container:path: 8ff648fa8b04:/app/\${imagename@Q}_sql.json
Error: No such container:path: 8ff648fa8b04:/app/\${imagename@Q}_webHost.json
Checking log dir presence
Log dir exist
Creating log dir for the current log saving iteration
Copying log files from container 1ee8ad5cab31
data-analysis
Error: No such container:path: 1ee8ad5cab31:/app/\${imagename@Q}_app.json
Error: No such container:path: 1ee8ad5cab31:/app/\${imagename@Q}_errors.json
Error: No such container:path: 1ee8ad5cab31:/app/\${imagename@Q}_sql.json
Error: No such container:path: 1ee8ad5cab31:/app/\${imagename@Q}_webHost.json
Checking log dir presence
Log dir exist
Creating log dir for the current log saving iteration
Copying log files from container 53a8467cd7f6
job-aggregator
Error: No such container:path: 53a8467cd7f6:/app/\${imagename@Q}_app.json
Error: No such container:path: 53a8467cd7f6:/app/\${imagename@Q}_errors.json
Error: No such container:path: 53a8467cd7f6:/app/\${imagename@Q}_sql.json
Error: No such container:path: 53a8467cd7f6:/app/\${imagename@Q}_webHost.json回答 1
Stack Overflow用户
发布于 2018-09-25 13:10:01
最终(有效)版本如下：
#!/bin/sh
DATE=`date +%Y%m%d`
LOGPATH="/var/log/kbci-ocr"
LOGDIR="${LOGPATH}/LOG-${DATE}"
LOGERR="${LOGDIR}/err.log"
docker ps --format {{.ID}},{{.Image}} > docker_running.txt
file=docker_running.txt
for i in `cat $file`
do
echo "Checking log dir presence"
if [ ! -d $LOGDIR ]
then
mkdir -p $LOGDIR
echo "Log dir created"
else
echo "Log dir exist"
fi
echo "Creating log dir for the current log saving iteration"
container=$(echo $i | cut -d"," -f1)
TARGETDIR="${LOGDIR}/${container}_$(date +%Y%m%d_%H%M%S)"
mkdir -p $TARGETDIR
imagename=$(echo $i | cut -d"," -f2 | cut -d"/" -f4 | cut -d":" -f1)
echo "Copying log files from container ${container} \ image ${imagename} to path ${TARGETDIR}"
if [ "$imagename" = "client-api" ]
then
$(docker cp ${container}:/app/\\${imagename}_app.json $TARGETDIR)
$(docker cp ${container}:/app/\\${imagename}_errors.json $TARGETDIR)
$(docker cp ${container}:/app/\\${imagename}_sql.json $TARGETDIR)
$(docker cp ${container}:/app/\\${imagename}_webHost.json $TARGETDIR)
elif [ "$imagename" = "data-analysis" ]
then
$(docker cp ${container}:/app/\\${imagename}_app.json $TARGETDIR)
$(docker cp ${container}:/app/\\${imagename}_sql.json $TARGETDIR)
elif [ "$imagename" = "job-aggregator" ]
then
$(docker cp ${container}:/app/\\${imagename}_app.json $TARGETDIR)
$(docker cp ${container}:/app/\\${imagename}_mt.json $TARGETDIR)
elif [ "$imagename" = "document-uploader" ]
then
$(docker cp ${container}:/app/\\${imagename}_app.json $TARGETDIR)
elif [ "$imagename" = "capture-plugin" ]
then
$(docker cp ${container}:/app/\\${imagename}_app.json $TARGETDIR)
$(docker cp ${container}:/app/\\${imagename}_mt.json $TARGETDIR)
$(docker cp ${container}:/app/\\${imagename}_sql.json $TARGETDIR)
fi
done
rm -rf docker_running.txt页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/52483865
复制相关文章
相似问题
腾讯云开发者
