Introduction Background Operations & observability Outro Intro to Prometheus With a dash of operations & observability Richard Hartmann & Frederic Branczyk @TwitchiH & @fredbrancz 2018-12-12 Richard

Welcome to Ubuntu Use the Launcher to start applications Find apps, files, music, and more with the Dash Manage apps & settings with the menu bar Log out, power off, switch users Desktop, apps & windows gives you quick access to the applications you use most often. Learn more about the Launcher. The Dash The Ubuntu Button sits near the top left corner of the screen and is always the top item in the desktop, the Dash. The Dash is designed to make it easier to find, open, and use apps, files, music, and more. For example, if you type the word "document" into the Search Bar, the Dash will show

Line Color Set the color of the line. Cap Style Choose the cap style of the line. Dash Style Choose the dash style of the line. Join Style Choose the join style of the line. Visible Check this Line Color Set the color of the line. Cap Style Choose the cap style of the line. Dash Style Choose the dash style of the line. Join Style Choose the join style of the line. Visible Check this Line Color Set the color of the line. Cap Style Choose the cap style of the line. Dash Style Choose the dash style of the line. Join Style Choose the join style of the line. Visible Check this

Line Color Set the color of the line. Cap Style Choose the cap style of the line. Dash Style Choose the dash style of the line. Join Style Choose the join style of the line. Visible Check this Line Color Set the color of the line. Cap Style Choose the cap style of the line. Dash Style Choose the dash style of the line. Join Style Choose the join style of the line. Visible Check this Line Color Set the color of the line. Cap Style Choose the cap style of the line. Dash Style Choose the dash style of the line. Join Style Choose the join style of the line. Visible Check this

Line Color Set the color of the line. Cap Style Choose the cap style of the line. Dash Style Choose the dash style of the line. Join Style Choose the join style of the line. Visible Check this Line Color Set the color of the line. Cap Style Choose the cap style of the line. Dash Style Choose the dash style of the line. Join Style Choose the join style of the line. Visible Check this Line Color Set the color of the line. Cap Style Choose the cap style of the line. Dash Style Choose the dash style of the line. Join Style Choose the join style of the line. Visible Check this

Path(exists=False, file_okay=True, dir_okay=True, writable=False, readable=True, re- solve_path=False, allow_dash=False, path_type=None) The path type is similar to the File type but it performs different checks perform various basic checks about what the file or directory should be. Changed in version 6.0: allow_dash was added. Parameters • exists – if set to true, the file or directory needs to exist for this value passed onwards. This means that it’s absolute and symlinks are resolved. • allow_dash – If this is set to True, a single dash to indicate standard streams is permitted. 12 Chapter 1. Documentation Click

Pod 和容器，典型的比如创建 Pod、销 毁 Pod，显然我们应该关注这些操作的 成功率和耗时 • Categraf 的仓库中 inputs/kubernetes/kubelet-metrics- dash.json 就是 Kubelet 的大盘文件 • kubelet_running_pods：运行的Pod的数量，gauge类型 • kubelet_running_containers：运行的容器的数量，gauge类型， 修改 iptables 或者 ipvs。所以要重点关 注 sync_proxy_rules 相关的指标 • Categraf 的仓库中 inputs/kubernetes/kube-proxy- dash.json 就是 kube-proxy 的大盘文件 • up 关注 kube-proxy 的存活性，应该和 node 节点的数量相等 • rest_client_request_duration_seconds 也会缓存很多数据到内存里，所以进程占用的 内存，所在机器的内存使用率都应该要关注 • 采集方式可以参考 categraf 仓库的 k8s/deployment.yaml，大盘可以参考 k8s/apiserver- dash.json • apiserver_request_total 请求量的指标，可以统计每秒请求数、成功率 • apiserver_request_duration_seconds 请求延迟统计 •

line width, before beveling the join instead. • dashPhase Starting offset for dash pattern. • dashes Array of on/off dash lengths. {dashes:[5,10], lineWidth:3, lineCap:'Round'} 6.4. Object Protocols the number of items in the border dash pattern. Returns Integer. var dashCount = annotation.getBorderDashCount(); getBorderDashItem(i) Returns the length of dash pattern item i. Arguments • i – the annotation border dash pattern to the given array of dash item lengths. The supplied array represents the respective line stroke and gap lengths, e.g. [1,1] sets a small dash and small gap, [2,1,4

tab, you can set the width of the stroke, the shape of its and or select a dash pattern (simple stroke, various dash lengths,…). Check the zoom level (in %) in the bottom right corner of the window access to a large selection of different dash styles, that give you regular dash patterns along the stroke. The number field to the right allows you to shift the dash pattern to the desired location. It is Please follow English typography guidelines for dashes. See https://en.wikipedia.org/wiki/Dash En dash: – Em dash: — Ellipsis: … The following won’t be visible in this location, but it will appear in

tab, you can set the width of the stroke, the shape of its and or select a dash pattern (simple stroke, various dash lengths,…). Check the zoom level (in %) in the bottom right corner of the window access to a large selection of different dash styles, that give you regular dash patterns along the stroke. The number field to the right allows you to shift the dash pattern to the desired location. It is Please follow English typography guidelines for dashes. See https://en.wikipedia.org/wiki/Dash En dash: – Em dash: — Ellipsis: … glossary Path path The following won’t be visible in this location,