* Fix a bug under the rkt runtime whereby image-registries with ports would not be fetched from ([#34375](https://github.com/kubernetes/kubernetes/pull/34375), [@euank](https://github.com/euank))
* Updated default Elasticsearch and Kibana used for elasticsearch logging destination to versions 2.4.1 and 4.6.1 respectively. ([#34969](https://github.com/kubernetes/kubernetes/pull/34969), [@Crassirostris](https://github.com/Crassirostris))

hinohara.tokyo.jp
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hiphop
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hisamitsu
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  ([#79106](https://github.com/kubernetes/kubernetes/pull/79106), [@vbannai](https://github.com/vbannai))

### Instrumentation

- Kibana has been slightly revamped/improved in the latest version ([#80421](https://github.com/kubernetes/kubernetes/pull/80421), [@lostick](https://github.com/lostick))

### Network

*   Fix a typo in prometheus-to-sd configuration, that drops some stackdriver metrics. ([#56473](https://github.com/kubernetes/kubernetes/pull/56473),[ @loburm](https://github.com/loburm))
*   [fluentd-elasticsearch addon] Elasticsearch and Kibana are updated to version 5.6.4 ([#55400](https://github.com/kubernetes/kubernetes/pull/55400),[ @mrahbar](https://github.com/mrahbar))

* Upgrade Elasticsearch/Kibana to 5.5.1 in fluentd-elasticsearch addon ([#48722](https://github.com/kubernetes/kubernetes/pull/48722), [@aknuds1](https://github.com/aknuds1))
        * Switch to basing our image of Elasticsearch in fluentd-elasticsearch addon off the official one
        * Switch to the official image of Kibana in fluentd-elasticsearch addon

- Influxdb is unchanged from v1.10: v1.3.3 ([#53319](https://github.com/kubernetes/kubernetes/pull/53319))
- Grafana is unchanged from v1.10: v4.4.3 ([#53319](https://github.com/kubernetes/kubernetes/pull/53319))
- Kibana is at v6.3.2.  ([#67582](https://github.com/kubernetes/kubernetes/pull/67582))
- CAdvisor is unchanged from v1.11:  v0.30.1 ([#64987](https://github.com/kubernetes/kubernetes/pull/64987))

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- Grafana is unchanged at v4.4.3 since Kubernetes 1.10 ([#53319](https://github.com/kubernetes/kubernetes/pull/53319))
- Kibana has been upgraded to v6.6.1. ([#71251](https://github.com/kubernetes/kubernetes/pull/71251))
- CAdvisor has been updated to v0.33.1 ([#75140](https://github.com/kubernetes/kubernetes/pull/75140))

- Grafana is unchanged at v4.4.3 since Kubernetes 1.10 ([#53319](https://github.com/kubernetes/kubernetes/pull/53319))
- Kibana has been upgraded to v6.3.2.  ([#67582](https://github.com/kubernetes/kubernetes/pull/67582))
- CAdvisor has been updated to v0.32.0 ([#70964](https://github.com/kubernetes/kubernetes/pull/70964))

- cri-tools has been updated to v1.14.0. ([#75658](https://github.com/kubernetes/kubernetes/pull/75658))
- Cluster Autoscaler has been updated to v1.15.0. ([#78866](https://github.com/kubernetes/kubernetes/pull/78866))
- Kibana has been upgraded to v6.6.1. ([#71251](https://github.com/kubernetes/kubernetes/pull/71251))
- CAdvisor has been updated to v0.33.2. ([#76291](https://github.com/kubernetes/kubernetes/pull/76291))