North-South Load Balancing of Kubernetes Services with eBPF/XDP Martynas Pumputis (Isovalent) October 28, 2020 10.0.0.1 10.0.0.2 10.0.0.3 httpd httpd “httpd” service 10.0.0.1:30000 10.0.0.2:30000

Processing and Analytics Vasiliki (Vasia) Kalavri
 vkalavri@bu.edu Spring 2020 4/09: Flow control and load shedding ??? Vasiliki Kalavri | Boston University 2020 Keeping up with the producers • Producers (back-pressure, flow control) 2 ??? Vasiliki Kalavri | Boston University 2020 Load management approaches 3 ! Load shedder (a) Load shedding (b) Back-pressure (c) Elasticity Selectively drop records: Suitable for transient load increase. Scale resource allocation: • Addresses the case of increased load and additionally ensures no resources are left idle when the input load decreases. ??? Vasiliki

不会被执行成功。 5. 性能问题 不见使用 方式进行单行的插入。如果必须这样使用，请将多行数据合并到一个 INSERT 语句中进行批量提交。 ROUTINE-LOAD ROUTINE LOAD ROUTINE LOAD Description Description {{'label' 'label'::'my_label 'my_label11'',, 'status' 'status'::'visible' label label status status visible visible committed committed txnId txnId err err show show load load where where label label=="xxx" "xxx";; show show transaction transaction where where id id==4005 all partitions have partitions have no no load load data data.. url: http: url: http://10.74.167.16:8042/api/_load_error_log? //10.74.167.16:8042/api/_load_error_log? file=__shard_2/error_log_inser

been the general trend. How to manage so many clusters ,resources and businesses How to ensure load balancing of cluster nodes 1 2 Improper resource requests 3 Multi-tenant resource preemption How Business N … How to ensure load balancing of cluster nodes ？ Dynamic-Scheduler Node1 Node2 Kube-scheduler Pod Request Load Level Request Load Level Real Load Level Real Load Level Assigned to Node2 but high load, while some nodes have high resource requests but low load. Dynamic-Scheduler Node1 Node2 Kube-scheduler Pod Request Load Level Request Load Level Real Load Level Real Load Level

Discovery ................................................................................ 6 1.3.7 Load Balancing........................................................................................ service for an Application .....................................................26 3.3 Load Balancing using Rancher Load Balancing services ............................................27 3.4 Service Discovery one needs robust cluster management capabilities that can handle scheduling, service discovery, load balancing, resource monitoring and isolation, and more. For years, Google has used a cluster manager

. . 47 Primary Replica Replication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48 Load Balance Strategy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48 4.4.5 Use Norms . . . . . . . . . . . . . . . . . 304 7.7.4 4. [Proxy] In Windows environment, could not find or load main class org.apache.shardingsphere.proxy.Bootstrap, how to solve it? . . . . . . . . . . . 304 asynchrony of primary‐replica synchronization, there may be short‐time data inconsistency between them. Load Balance Strategy Through this strategy, queries separated to different replica databases. 4.4.5

. . 68 Primary Replica Replication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68 Load Balance Strategy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68 3.3.5 Use Norms . . . . . . . . . . . . . . . . . . . . . . . 298 7.14 In Windows environment, could not find or load main class org.apache.shardingsphere.proxy.Bootstrap, how to solve it? . . . . . . . . . . . . . data. Merging result set by moving down its cursor is called stream merger. It does not require to load all the query results to the memory. Thus, it is able to save memory resource effectively and reduce

engine we’ll use (Phaser has three of them, we’ll use the simplest one). Also, in the Boot state we load the assets that will be shown in the Preload state. So.. the Boot state loads the assets for the might think, why instead not load the game assets there? Well nothing stops you from doing that, but the thing is, the game assets will most likely take much longer to load than the preload screen assets there is a blank screen (something users don’t love). Then, on the Preload state we’ll have time to load everything else with a nice and charming preload screen. Content of Boot.js: 1 var SpaceHipster

. . . 36 Primary‐Secondary synchronization . . . . . . . . . . . . . . . . . . . . . . . . . 36 Load balancer policy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 3.3.7 Limitations . 287 Key Generate Algorithm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 298 Load Balance Algorithm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 303 Encryption Algorithm . . . . . . . . . . . . . . . . . . . 495 8.2.1 Proxy In Windows environment, could not find or load main class org.apache.shardingsphere.proxy.Bootstrap, how to solve it? . . . . . . . . . . . 495

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2.2.1. Clean system and load the complete OFBiz data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 5.3.1. Load specific OFBiz data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 5.3.2. Load all OFBiz data. . . . . . 10 5.3.3. Load seed data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 5.3.4. load ext data. . . . .