databasemongodb
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MongoDB Tips

关联查询

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db.task.aggregate([
  { $lookup: {
    let: { "modeId":{ "$toObjectId": "$modem" } },
    from: "modem",
    pipeline: [
      { "$match": { "$expr": { "$eq": [ "$_id", "$$modeId" ] } } }
    ],
    as: "output"
  }},
  {
    $set: {
      modem_name: { $arrayElemAt: ["$output.name", 0] }
    }
  },{
  $project: {
    output: 0
  }
}])
networkkuberneteskubectl
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kubectl tips

更新 CR Status 字段

参考 Update K8s CR Status

强制删除 Namespace

参考 force-delete-namespace.sh

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#!/usr/bin/env bash

set -e
set -o pipefail

kubectl proxy &
proxy_pid="$!"
trap 'kill "$proxy_pid"' EXIT

for ns in $(kubectl get namespace --field-selector=status.phase=Terminating --output=jsonpath="{.items[*].metadata.name}"); do
    echo "Removing finalizers from namespace '$ns'..."
    curl -H "Content-Type: application/json" -X PUT "127.0.0.1:8001/api/v1/namespaces/$ns/finalize" -d @- \
        < <(kubectl get namespace "$ns" --output=json | jq '.spec = { "finalizers": [] }')

    echo
    echo "Force-deleting namespace '$ns'..."
    kubectl delete namespace "$ns" --force --grace-period=0 --ignore-not-found=true
done
javamirros
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Maven Mirrors

Huawei

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<repositories>
    <repository>
        <id>hw</id>
        <name>hw</name>
        <url>https://mirrors.huaweicloud.com/repository/maven/</url>
    </repository>
</repositories>

<pluginRepositories>
    <pluginRepository>
        <id>hw</id>
        <name>hw</name>
        <url>https://mirrors.huaweicloud.com/repository/maven/</url>
    </pluginRepository>
</pluginRepositories>