kubernetes - 流利的错误 "Systemd::JournalError: No such file or directory"

Question

我确实安装了 fluentd-kubernetes-daemonset 在我的 kube worker 上，一个没有任何错误，但另一个却抛出以下错误:

2018-12-07 03:48:33 +0000 [warn]: #0 [in_systemd_bootkube] Systemd::JournalError: No such file or directory retrying in 1s
2018-12-07 03:48:36 +0000 [warn]: #0 [in_systemd_kubelet] Systemd::JournalError: No such file or directory retrying in 1s
2018-12-07 03:48:39 +0000 [warn]: #0 [in_systemd_bootkube] Systemd::JournalError: No such file or directory retrying in 1s
2018-12-07 03:48:40 +0000 [warn]: #0 [in_systemd_docker] Systemd::JournalError: No such file or directory retrying in 1s
2018-12-07 03:48:45 +0000 [warn]: #0 [in_systemd_kubelet] Systemd::JournalError: No such file or directory retrying in 1s
2018-12-07 03:48:44 +0000 [warn]: #0 [in_systemd_bootkube] Systemd::JournalError: No such file or directory retrying in 1s
2018-12-07 03:48:48 +0000 [warn]: #0 [in_systemd_docker] Systemd::JournalError: No such file or directory retrying in 1s
2018-12-07 03:48:55 +0000 [warn]: #0 [in_systemd_bootkube] Systemd::JournalError: No such file or directory retrying in 1s

Answer 1

如果您没有在容器中设置 systemd，默认配置下 fluentd 会显示以下消息。

[warn]: #0 [in_systemd_bootkube] Systemd::JournalError: No such file or directory retrying in 1s
[warn]: #0 [in_systemd_kubelet] Systemd::JournalError: No such file or directory retrying in 1s
[warn]: #0 [in_systemd_docker] Systemd::JournalError: No such file or directory retrying in 1s

您可以通过设置 disable 来抑制这些消息。至 FLUENTD_SYSTEMD_CONF Kubernetes 配置中的环境变量，例如:

      containers:
        - name: fluentd
          image: fluent/fluentd-kubernetes-daemonset:v1-debian-elasticsearch
          env:
            - name: FLUENT_ELASTICSEARCH_HOST
              value: 'elasticsearch'
            - name: FLUENT_ELASTICSEARCH_PORT
              value: '9200'
            - name: FLUENT_ELASTICSEARCH_SCHEME
              value: 'http'
            - name: FLUENT_UID
              value: '0'
            - name: FLUENTD_SYSTEMD_CONF
              value: 'disable'

见 Disable systemd input