%e6%8e%a5%e5%8d%87%e7%ba%a7&url=%2fv1.22%2fzh%2fblog%2f2021%2fdirect-upgrade%2f" target=_blank><img class=share-icon src=/v1.22/img/social/twitterx.svg alt="Share to X">
</a><a href="https://www.facebook.com/sharer/sharer.php?u=%2fv1.22%2fzh%2fblog%2f2021%2fdirect-upgrade%2f" target=_blank><img class=share-icon src=/v1.22/img/social/facebook.svg alt="Share to Facebook"></a></div></div><nav class=pagenav><div class=left><a title="庆祝 Istio 的 4 岁生日。" href=/v1.22/zh/blog/2021/istio-4th-birthday/ c