假设我有一个基于ubuntu:latest的普通容器。现在有一个安全更新和ubuntu:latest更新在docker repo。
我如何知道我的本地映像及其容器运行落后? 是否有一些最佳实践来自动更新本地映像和容器来跟踪docker回购更新，这在实践中会给你同样的好处，让无人值守的升级运行在传统的ubuntu机器上
当前回答
以上答案也是正确的
有两种方法
使用的人 每隔一分钟运行脚本以获取新的docker映像
我只是分享脚本，可能会对你有帮助! 你可以用cronjob，我在OSX上成功尝试过
#!/bin/bash
##You can use below commented line for setting cron tab for running cron job and to store its O/P in one .txt file
#* * * * * /usr/bin/sudo -u admin -i bash -c /Users/Swapnil/Documents/checkimg.sh > /Users/Swapnil/Documents/cron_output.log 2>&1
# Example for the Docker Hub V2 API
# Returns all images and tags associated with a Docker Hub organization account.
# Requires 'jq': https://stedolan.github.io/jq/
# set username, password, and organization
# Filepath where your docker-compose file is present
FILEPATH="/Users/Swapnil/Documents/lamp-alpine"
# Your Docker hub user name
UNAME="ur username"
# Your Docker hub user password
UPASS="ur pwd"
# e.g organisation_name/image_name:image_tag
ORG="ur org name"
IMGNAME="ur img name"
IMGTAG="ur img tag"
# Container name
CONTNAME="ur container name"
# Expected built mins
BUILDMINS="5"
#Generally cronjob frequency
CHECKTIME="5"
NETWORKNAME="${IMGNAME}_private-network"
#After Image pulling, need to bring up all docker services?
DO_DOCKER_COMPOSE_UP=true
# -------
echo "Eecuting Script @ date and time in YmdHMS: $(date +%Y%m%d%H%M%S)"
set -e
PIDFILE=/Users/Swapnil/Documents/$IMGNAME/forever.pid
if [ -f $PIDFILE ]
then
PID=$(cat $PIDFILE)
ps -p $PID > /dev/null 2>&1
if [ $? -eq 0 ]
then
echo "Process already running"
exit 1
else
## Process not found assume not running
echo $$
echo $$ > $PIDFILE
if [ $? -ne 0 ]
then
echo "Could not create PID file"
exit 1
fi
fi
else
echo $$ > $PIDFILE
if [ $? -ne 0 ]
then
echo "Could not create PID file"
exit 1
fi
fi
# Check Docker is running or not; If not runing then exit
if docker info|grep Containers ; then
echo "Docker is running"
else
echo "Docker is not running"
rm $PIDFILE
exit 1
fi
# Check Container is running or not; and set variable
CONT_INFO=$(docker ps -f "name=$CONTNAME" --format "{{.Names}}")
if [ "$CONT_INFO" = "$CONTNAME" ]; then
echo "Container is running"
IS_CONTAINER_RUNNING=true
else
echo "Container is not running"
IS_CONTAINER_RUNNING=false
fi
# get token
echo "Retrieving token ..."
TOKEN=$(curl -s -H "Content-Type: application/json" -X POST -d '{"username": "'${UNAME}'", "password": "'${UPASS}'"}' https://hub.docker.com/v2/users/login/ | jq -r .token)
# get list of repositories
echo "Retrieving repository list ..."
REPO_LIST=$(curl -s -H "Authorization: JWT ${TOKEN}" https://hub.docker.com/v2/repositories/${ORG}/?page_size=100 | jq -r '.results|.[]|.name')
# output images & tags
echo "Images and tags for organization: ${ORG}"
echo
for i in ${REPO_LIST}
do
echo "${i}:"
# tags
IMAGE_TAGS=$(curl -s -H "Authorization: JWT ${TOKEN}" https://hub.docker.com/v2/repositories/${ORG}/${i}/tags/?page_size=100 | jq -r '.results|.[]|.name')
for j in ${IMAGE_TAGS}
do
echo " - ${j}"
done
#echo
done
# Check Perticular image is the latest or not
#imm=$(curl -s -H "Authorization: JWT ${TOKEN}" https://hub.docker.com/v2/repositories/${ORG}/${IMGNAME}/tags/?page_size=100)
echo "-----------------"
echo "Last built date details about Image ${IMGNAME} : ${IMGTAG} for organization: ${ORG}"
IMAGE_UPDATED_DATE=$(curl -s -H "Authorization: JWT ${TOKEN}" https://hub.docker.com/v2/repositories/${ORG}/${IMGNAME}/tags/?page_size=100 | jq -r '.results|.[]|select(.name | contains("'${IMGTAG}'")).last_updated')
echo "On Docker Hub IMAGE_UPDATED_DATE---$IMAGE_UPDATED_DATE"
echo "-----------------"
IMAGE_CREATED_DATE=$(docker image inspect ${ORG}/${IMGNAME}:${IMGTAG} | jq -r '.[]|.Created')
echo "Locally IMAGE_CREATED_DATE---$IMAGE_CREATED_DATE"
updatedDate=$(date -jf '%Y-%m-%dT%H:%M' "${IMAGE_UPDATED_DATE:0:16}" +%Y%m%d%H%M%S)
createdDate=$(date -jf '%Y-%m-%dT%H:%M' "${IMAGE_CREATED_DATE:0:16}" +%Y%m%d%H%M%S)
currentDate=$(date +%Y%m%d%H%M%S)
start_date=$(date -jf "%Y%m%d%H%M%S" "$currentDate" "+%s")
end_date=$(date -jf "%Y%m%d%H%M%S" "$updatedDate" "+%s")
updiffMins=$(( ($start_date - $end_date) / (60) ))
if [[ "$updiffMins" -lt $(($CHECKTIME+1)) ]]; then
if [ ! -d "${FILEPATH}" ]; then
mkdir "${FILEPATH}";
fi
cd "${FILEPATH}"
pwd
echo "updatedDate---$updatedDate" > "ScriptOutput_${currentDate}.txt"
echo "createdDate---$createdDate" >> "ScriptOutput_${currentDate}.txt"
echo "currentDate---$currentDate" >> "ScriptOutput_${currentDate}.txt"
echo "Found after regular checking time -> Docker hub's latest updated image is new; Diff ${updiffMins} mins" >> "ScriptOutput_${currentDate}.txt"
echo "Script is checking for latest updates after every ${CHECKTIME} mins" >> "ScriptOutput_${currentDate}.txt"
echo "Fetching all new"
echo "---------------------------"
if $IS_CONTAINER_RUNNING ; then
echo "Container is running"
else
docker-compose down
echo "Container stopped and removed; Network removed" >> "ScriptOutput_${currentDate}.txt"
fi
echo "Image_Created_Date=$currentDate" > ".env"
echo "ORG=$ORG" >> ".env"
echo "IMGNAME=$IMGNAME" >> ".env"
echo "IMGTAG=$IMGTAG" >> ".env"
echo "CONTNAME=$CONTNAME" >> ".env"
echo "NETWORKNAME=$NETWORKNAME" >> ".env"
docker-compose build --no-cache
echo "Docker Compose built" >> "ScriptOutput_${currentDate}.txt"
if $DO_DOCKER_COMPOSE_UP ; then
docker-compose up -d
echo "Docker services are up now, checked in" >> "ScriptOutput_${currentDate}.txt"
else
echo "Docker services are down, checked in" >> "ScriptOutput_${currentDate}.txt"
fi
elif [[ "$updatedDate" -gt "$createdDate" ]]; then
echo "Updated is latest"
start_date=$(date -jf "%Y%m%d%H%M%S" "$updatedDate" "+%s")
end_date=$(date -jf "%Y%m%d%H%M%S" "$createdDate" "+%s")
diffMins=$(( ($start_date - $end_date) / (60) ))
if [[ "$BUILDMINS" -lt "$diffMins" ]]; then
if [ ! -d "${FILEPATH}" ]; then
mkdir "${FILEPATH}";
fi
cd "${FILEPATH}"
pwd
echo "updatedDate---$updatedDate" > "ScriptOutput_${currentDate}.txt"
echo "createdDate---$createdDate" >> "ScriptOutput_${currentDate}.txt"
echo "currentDate---$currentDate" >> "ScriptOutput_${currentDate}.txt"
echo "Found after comparing times -> Docker hub's latest updated image is new; Diff ${diffMins} mins" >> "ScriptOutput_${currentDate}.txt"
echo "Actual image built time is less i.e. ${diffMins} mins than MAX expexted BUILD TIME i.e. ${BUILDMINS} mins" >> "ScriptOutput_${currentDate}.txt"
echo "Fetching all new" >> "ScriptOutput_${currentDate}.txt"
echo "-----------------------------"
if $IS_CONTAINER_RUNNING ; then
echo "Container is running"
else
docker-compose down
echo "Container stopped and removed; Network removed" >> "ScriptOutput_${currentDate}.txt"
fi
echo "Image_Created_Date=$currentDate" > ".env"
echo "ORG=$ORG" >> ".env"
echo "IMGNAME=$IMGNAME" >> ".env"
echo "IMGTAG=$IMGTAG" >> ".env"
echo "CONTNAME=$CONTNAME" >> ".env"
echo "NETWORKNAME=$NETWORKNAME" >> ".env"
docker-compose build --no-cache
echo "Docker Compose built" >> "ScriptOutput_${currentDate}.txt"
if $DO_DOCKER_COMPOSE_UP ; then
docker-compose up -d
echo "Docker services are up now" >> "ScriptOutput_${currentDate}.txt"
else
echo "Docker services are down" >> "ScriptOutput_${currentDate}.txt"
fi
elif [[ "$BUILDMINS" -gt "$diffMins" ]]; then
echo "Docker hub's latest updated image is NOT new; Diff ${diffMins} mins"
echo "Docker images not fetched"
else
echo "Docker hub's latest updated image is NOT new; Diff ${diffMins} mins"
echo "Docker images not fetched"
fi
elif [[ "$createdDate" -gt "$updatedDate" ]]; then
echo "Created is latest"
start_date=$(date -jf "%Y%m%d%H%M%S" "$createdDate" "+%s")
end_date=$(date -jf "%Y%m%d%H%M%S" "$updatedDate" "+%s")
echo "Docker hub has older docker image than local; Older than $(( ($start_date - $end_date) / (60) ))mins"
fi
echo
echo "------------end---------------"
rm $PIDFILE
这是我的docker-compose文件
version: "3.2"
services:
lamp-alpine:
build:
context: .
container_name: "${CONTNAME}"
image: "${ORG}/${IMGNAME}:${IMGTAG}"
ports:
- "127.0.0.1:80:80"
networks:
- private-network
networks:
private-network:
driver: bridge
其他回答
以上答案也是正确的
有两种方法
使用的人 每隔一分钟运行脚本以获取新的docker映像
我只是分享脚本，可能会对你有帮助! 你可以用cronjob，我在OSX上成功尝试过
#!/bin/bash
##You can use below commented line for setting cron tab for running cron job and to store its O/P in one .txt file
#* * * * * /usr/bin/sudo -u admin -i bash -c /Users/Swapnil/Documents/checkimg.sh > /Users/Swapnil/Documents/cron_output.log 2>&1
# Example for the Docker Hub V2 API
# Returns all images and tags associated with a Docker Hub organization account.
# Requires 'jq': https://stedolan.github.io/jq/
# set username, password, and organization
# Filepath where your docker-compose file is present
FILEPATH="/Users/Swapnil/Documents/lamp-alpine"
# Your Docker hub user name
UNAME="ur username"
# Your Docker hub user password
UPASS="ur pwd"
# e.g organisation_name/image_name:image_tag
ORG="ur org name"
IMGNAME="ur img name"
IMGTAG="ur img tag"
# Container name
CONTNAME="ur container name"
# Expected built mins
BUILDMINS="5"
#Generally cronjob frequency
CHECKTIME="5"
NETWORKNAME="${IMGNAME}_private-network"
#After Image pulling, need to bring up all docker services?
DO_DOCKER_COMPOSE_UP=true
# -------
echo "Eecuting Script @ date and time in YmdHMS: $(date +%Y%m%d%H%M%S)"
set -e
PIDFILE=/Users/Swapnil/Documents/$IMGNAME/forever.pid
if [ -f $PIDFILE ]
then
PID=$(cat $PIDFILE)
ps -p $PID > /dev/null 2>&1
if [ $? -eq 0 ]
then
echo "Process already running"
exit 1
else
## Process not found assume not running
echo $$
echo $$ > $PIDFILE
if [ $? -ne 0 ]
then
echo "Could not create PID file"
exit 1
fi
fi
else
echo $$ > $PIDFILE
if [ $? -ne 0 ]
then
echo "Could not create PID file"
exit 1
fi
fi
# Check Docker is running or not; If not runing then exit
if docker info|grep Containers ; then
echo "Docker is running"
else
echo "Docker is not running"
rm $PIDFILE
exit 1
fi
# Check Container is running or not; and set variable
CONT_INFO=$(docker ps -f "name=$CONTNAME" --format "{{.Names}}")
if [ "$CONT_INFO" = "$CONTNAME" ]; then
echo "Container is running"
IS_CONTAINER_RUNNING=true
else
echo "Container is not running"
IS_CONTAINER_RUNNING=false
fi
# get token
echo "Retrieving token ..."
TOKEN=$(curl -s -H "Content-Type: application/json" -X POST -d '{"username": "'${UNAME}'", "password": "'${UPASS}'"}' https://hub.docker.com/v2/users/login/ | jq -r .token)
# get list of repositories
echo "Retrieving repository list ..."
REPO_LIST=$(curl -s -H "Authorization: JWT ${TOKEN}" https://hub.docker.com/v2/repositories/${ORG}/?page_size=100 | jq -r '.results|.[]|.name')
# output images & tags
echo "Images and tags for organization: ${ORG}"
echo
for i in ${REPO_LIST}
do
echo "${i}:"
# tags
IMAGE_TAGS=$(curl -s -H "Authorization: JWT ${TOKEN}" https://hub.docker.com/v2/repositories/${ORG}/${i}/tags/?page_size=100 | jq -r '.results|.[]|.name')
for j in ${IMAGE_TAGS}
do
echo " - ${j}"
done
#echo
done
# Check Perticular image is the latest or not
#imm=$(curl -s -H "Authorization: JWT ${TOKEN}" https://hub.docker.com/v2/repositories/${ORG}/${IMGNAME}/tags/?page_size=100)
echo "-----------------"
echo "Last built date details about Image ${IMGNAME} : ${IMGTAG} for organization: ${ORG}"
IMAGE_UPDATED_DATE=$(curl -s -H "Authorization: JWT ${TOKEN}" https://hub.docker.com/v2/repositories/${ORG}/${IMGNAME}/tags/?page_size=100 | jq -r '.results|.[]|select(.name | contains("'${IMGTAG}'")).last_updated')
echo "On Docker Hub IMAGE_UPDATED_DATE---$IMAGE_UPDATED_DATE"
echo "-----------------"
IMAGE_CREATED_DATE=$(docker image inspect ${ORG}/${IMGNAME}:${IMGTAG} | jq -r '.[]|.Created')
echo "Locally IMAGE_CREATED_DATE---$IMAGE_CREATED_DATE"
updatedDate=$(date -jf '%Y-%m-%dT%H:%M' "${IMAGE_UPDATED_DATE:0:16}" +%Y%m%d%H%M%S)
createdDate=$(date -jf '%Y-%m-%dT%H:%M' "${IMAGE_CREATED_DATE:0:16}" +%Y%m%d%H%M%S)
currentDate=$(date +%Y%m%d%H%M%S)
start_date=$(date -jf "%Y%m%d%H%M%S" "$currentDate" "+%s")
end_date=$(date -jf "%Y%m%d%H%M%S" "$updatedDate" "+%s")
updiffMins=$(( ($start_date - $end_date) / (60) ))
if [[ "$updiffMins" -lt $(($CHECKTIME+1)) ]]; then
if [ ! -d "${FILEPATH}" ]; then
mkdir "${FILEPATH}";
fi
cd "${FILEPATH}"
pwd
echo "updatedDate---$updatedDate" > "ScriptOutput_${currentDate}.txt"
echo "createdDate---$createdDate" >> "ScriptOutput_${currentDate}.txt"
echo "currentDate---$currentDate" >> "ScriptOutput_${currentDate}.txt"
echo "Found after regular checking time -> Docker hub's latest updated image is new; Diff ${updiffMins} mins" >> "ScriptOutput_${currentDate}.txt"
echo "Script is checking for latest updates after every ${CHECKTIME} mins" >> "ScriptOutput_${currentDate}.txt"
echo "Fetching all new"
echo "---------------------------"
if $IS_CONTAINER_RUNNING ; then
echo "Container is running"
else
docker-compose down
echo "Container stopped and removed; Network removed" >> "ScriptOutput_${currentDate}.txt"
fi
echo "Image_Created_Date=$currentDate" > ".env"
echo "ORG=$ORG" >> ".env"
echo "IMGNAME=$IMGNAME" >> ".env"
echo "IMGTAG=$IMGTAG" >> ".env"
echo "CONTNAME=$CONTNAME" >> ".env"
echo "NETWORKNAME=$NETWORKNAME" >> ".env"
docker-compose build --no-cache
echo "Docker Compose built" >> "ScriptOutput_${currentDate}.txt"
if $DO_DOCKER_COMPOSE_UP ; then
docker-compose up -d
echo "Docker services are up now, checked in" >> "ScriptOutput_${currentDate}.txt"
else
echo "Docker services are down, checked in" >> "ScriptOutput_${currentDate}.txt"
fi
elif [[ "$updatedDate" -gt "$createdDate" ]]; then
echo "Updated is latest"
start_date=$(date -jf "%Y%m%d%H%M%S" "$updatedDate" "+%s")
end_date=$(date -jf "%Y%m%d%H%M%S" "$createdDate" "+%s")
diffMins=$(( ($start_date - $end_date) / (60) ))
if [[ "$BUILDMINS" -lt "$diffMins" ]]; then
if [ ! -d "${FILEPATH}" ]; then
mkdir "${FILEPATH}";
fi
cd "${FILEPATH}"
pwd
echo "updatedDate---$updatedDate" > "ScriptOutput_${currentDate}.txt"
echo "createdDate---$createdDate" >> "ScriptOutput_${currentDate}.txt"
echo "currentDate---$currentDate" >> "ScriptOutput_${currentDate}.txt"
echo "Found after comparing times -> Docker hub's latest updated image is new; Diff ${diffMins} mins" >> "ScriptOutput_${currentDate}.txt"
echo "Actual image built time is less i.e. ${diffMins} mins than MAX expexted BUILD TIME i.e. ${BUILDMINS} mins" >> "ScriptOutput_${currentDate}.txt"
echo "Fetching all new" >> "ScriptOutput_${currentDate}.txt"
echo "-----------------------------"
if $IS_CONTAINER_RUNNING ; then
echo "Container is running"
else
docker-compose down
echo "Container stopped and removed; Network removed" >> "ScriptOutput_${currentDate}.txt"
fi
echo "Image_Created_Date=$currentDate" > ".env"
echo "ORG=$ORG" >> ".env"
echo "IMGNAME=$IMGNAME" >> ".env"
echo "IMGTAG=$IMGTAG" >> ".env"
echo "CONTNAME=$CONTNAME" >> ".env"
echo "NETWORKNAME=$NETWORKNAME" >> ".env"
docker-compose build --no-cache
echo "Docker Compose built" >> "ScriptOutput_${currentDate}.txt"
if $DO_DOCKER_COMPOSE_UP ; then
docker-compose up -d
echo "Docker services are up now" >> "ScriptOutput_${currentDate}.txt"
else
echo "Docker services are down" >> "ScriptOutput_${currentDate}.txt"
fi
elif [[ "$BUILDMINS" -gt "$diffMins" ]]; then
echo "Docker hub's latest updated image is NOT new; Diff ${diffMins} mins"
echo "Docker images not fetched"
else
echo "Docker hub's latest updated image is NOT new; Diff ${diffMins} mins"
echo "Docker images not fetched"
fi
elif [[ "$createdDate" -gt "$updatedDate" ]]; then
echo "Created is latest"
start_date=$(date -jf "%Y%m%d%H%M%S" "$createdDate" "+%s")
end_date=$(date -jf "%Y%m%d%H%M%S" "$updatedDate" "+%s")
echo "Docker hub has older docker image than local; Older than $(( ($start_date - $end_date) / (60) ))mins"
fi
echo
echo "------------end---------------"
rm $PIDFILE
这是我的docker-compose文件
version: "3.2"
services:
lamp-alpine:
build:
context: .
container_name: "${CONTNAME}"
image: "${ORG}/${IMGNAME}:${IMGTAG}"
ports:
- "127.0.0.1:80:80"
networks:
- private-network
networks:
private-network:
driver: bridge
你不会知道你的集装箱在后面没有运行码头拉。然后，您需要重新构建或重组您的映像。
docker pull image:tag
docker-compose -f docker-compose.yml -f production.yml up -d --build
这些命令可以与完成升级所需的任何其他东西一起放在脚本中，尽管一个合适的容器不需要任何额外的东西。
一个简单而伟大的解决方案是牧羊人
Docker映像的依赖管理是一个真正的问题。我所在的团队开发了一个名为MicroBadger的工具，通过监视容器图像和检查元数据来帮助解决这个问题。它的功能之一是让你设置一个通知网络钩子，当你感兴趣的图像(例如基本图像)发生变化时，它会被调用。
One of the ways to do it is to drive this through your CI/CD systems. Once your parent image is built, have something that scans your git repos for images using that parent. If found, you'd then send a pull request to bump to new versions of the image. The pull request, if all tests pass, would be merged and you'd have a new child image based on updated parent. An example of a tool that takes this approach can be found here: https://engineering.salesforce.com/open-sourcing-dockerfile-image-update-6400121c1a75 .
如果你不控制你的父映像，就像你依赖于官方ubuntu映像的情况一样，你可以写一些工具来检测父映像标记或校验和(不是一回事，标记是可变的)的变化，并相应地调用子映像构建。
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