K8S-Deployments镜像批量替换

升级使用某镜像版本的Deployments

#!/bin/bash

OLD_IMAGE=$1
NEW_IMAGE=$2
CONTAINER_NAME=$3
NAME_SPACE=$4

# 获取使用指定镜像的所有 Deployments
DEPLOYMENTS=$(kubectl -n $NAME_SPACE get deployments -o json | jq '.items[] | select(.spec.template.spec.initContainers[].image == "'$OLD_IMAGE'") | .metadata.name')

# 检查是否找到任何 Deployment
if [ -z "$DEPLOYMENTS" ]; then
    echo "没有找到使用镜像 $OLD_IMAGE 的 Deployment"
    exit 0
fi

# 遍历每个 Deployment 并更新镜像
for DEPLOY in $DEPLOYMENTS; do
    # 去除 DEPLOY 中可能存在的引号
    DEPLOY=$(echo "$DEPLOY" | tr -d '"')

    echo "正在更新 Deployment: $DEPLOY"

    # 更新 Deployment 的镜像
    kubectl -n $NAME_SPACE set image deployment/$DEPLOY $CONTAINER_NAME=$NEW_IMAGE

    if [ $? -eq 0 ]; then
        echo "Deployment $DEPLOY 更新成功"
    else
        echo "Deployment $DEPLOY 更新失败"
    fi
done

echo "所有 Deployments 更新完成"