113 lines
3.9 KiB
YAML
113 lines
3.9 KiB
YAML
apiVersion: apps/v1
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kind: DaemonSet
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metadata:
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name: fluentd-gcp-v2.0
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labels:
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k8s-app: fluentd-gcp
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kubernetes.io/cluster-service: "true"
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addonmanager.kubernetes.io/mode: Reconcile
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version: v2.0
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spec:
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selector:
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matchLabels:
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k8s-app: fluentd-gcp
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kubernetes.io/cluster-service: "true"
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version: v2.0
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updateStrategy:
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type: RollingUpdate
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template:
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metadata:
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labels:
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k8s-app: fluentd-gcp
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kubernetes.io/cluster-service: "true"
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version: v2.0
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# 如果节点支持基于关键 Pod 注解的优先级方案，
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# 此注解可确保 fluentd 不会被驱逐。
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# 请注意，此注解并不保证在这些节点上准入 (#40573)。
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annotations:
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scheduler.alpha.kubernetes.io/critical-pod: ''
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spec:
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dnsPolicy: Default
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containers:
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- name: fluentd-gcp
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image: registry.k8s.io/fluentd-gcp:2.0.2
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# 如果 fluentd 消耗它自己的日志，则可能出现以下情形：
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# fluentd 将一个块发送到服务器时失败 => 将其写入到日志 =>
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# 尝试将此消息发送到该服务器 => 发送一个块时失败等等。
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# 写入一个未导出到后端的文件，可以避免发生这类事情。
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# 它还默认允许增加 fluentd 的详细程度。
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command:
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- '/bin/sh'
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- '-c'
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- '/run.sh $FLUENTD_ARGS 2>&1 >>/var/log/fluentd.log'
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env:
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- name: FLUENTD_ARGS
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value: --no-supervisor
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resources:
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limits:
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memory: 300Mi
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requests:
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cpu: 100m
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memory: 200Mi
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volumeMounts:
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- name: varlog
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mountPath: /var/log
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- name: varlibdockercontainers
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mountPath: /var/lib/docker/containers
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readOnly: true
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- name: libsystemddir
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mountPath: /host/lib
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readOnly: true
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- name: config-volume
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mountPath: /etc/fluent/config.d
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# 存活探针旨在帮助处理 fluentd 无明显原因就静默挂起的情况，
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# 这种情况通常只能手动重启。这个探针的思路是：
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# 如果 fluentd 有 5 分钟未执行队列操作或未清洗数据分块，
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# 那么肯定出现了什么问题。
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# 如果你要更改 fluentd 配置以减少 fluentd 收集的日志量，
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# 请考虑更改阈值或彻底关闭存活探针。
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livenessProbe:
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initialDelaySeconds: 600
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periodSeconds: 60
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exec:
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command:
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- '/bin/sh'
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- '-c'
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- >
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LIVENESS_THRESHOLD_SECONDS=${LIVENESS_THRESHOLD_SECONDS:-300};
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STUCK_THRESHOLD_SECONDS=${LIVENESS_THRESHOLD_SECONDS:-900};
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if [ ! -e /var/log/fluentd-buffers ];
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then
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exit 1;
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fi;
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LAST_MODIFIED_DATE=`stat /var/log/fluentd-buffers | grep Modify | sed -r "s/Modify: (.*)/\1/"`;
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LAST_MODIFIED_TIMESTAMP=`date -d "$LAST_MODIFIED_DATE" +%s`;
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if [ `date +%s` -gt `expr $LAST_MODIFIED_TIMESTAMP + $STUCK_THRESHOLD_SECONDS` ];
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then
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rm -rf /var/log/fluentd-buffers;
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exit 1;
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fi;
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if [ `date +%s` -gt `expr $LAST_MODIFIED_TIMESTAMP + $LIVENESS_THRESHOLD_SECONDS` ];
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then
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exit 1;
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fi;
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nodeSelector:
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beta.kubernetes.io/fluentd-ds-ready: "true"
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tolerations:
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- key: "node.alpha.kubernetes.io/ismaster"
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effect: "NoSchedule"
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terminationGracePeriodSeconds: 30
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volumes:
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- name: varlog
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hostPath:
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path: /var/log
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- name: varlibdockercontainers
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hostPath:
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path: /var/lib/docker/containers
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- name: libsystemddir
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hostPath:
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path: /usr/lib64
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- name: config-volume
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configMap:
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name: fluentd-gcp-config
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