e r n e t e s c on t r ol l e r m an age r . • 1. 3. 1 - E n s u r e t h at t h e --terminated-pod-gc-threshold ar gu m e n t i s s e t as ap p r op r i at e ( S c or e d ) • 1. 3. 2 - E n s u r e t h f y t h e f ol l ow i n g op t i on s ar e s e t i n t h e command s e c t i on : --terminated-pod-gc-threshold=1000 --profiling=false --address=127.0.0.1 --feature-gates="RotateKubeletServerCertificate=true" : services: kube-controller: extra_args: profiling: "false" address: "127.0.0.1" terminated-pod-gc-threshold: "1000" feature-gates: "RotateKubeletServerCertificate=true" • R e c on fi gu r e t h e

Strong Cryptographic Ciphers (Automated) 1.3 Controller Manager 1.3.1 Ensure that the --terminated-pod-gc-threshold argument is set as appropriate (Automated) 1.3.2 Ensure that the --profiling argument is Self-Assessment Guide - Rancher v2.5.4 76 1.3 Controller Manager 1.3.1 Ensure that the --terminated-pod-gc- threshold argument is set as appropriate (Automated) Result: pass Remediation: Edit the Controller --terminated-pod-gc-threshold to an appropriate threshold, for example: --terminated-pod-gc-threshold=10 Audit: /bin/ps -ef | grep kube-controller-manager | grep -v grep Expected Result: '--terminated-pod-gc-threshold'

################################## GC Logging ################################ #monitor.jvm.gc.young.warn: 1000ms #monitor.jvm.gc.young.info: 700ms #monitor.jvm.gc.young.debug: 400ms #monitor.jvm.gc.old.warn: 10s #monitor #monitor.jvm.gc.old.info: 5s #monitor.jvm.gc.old.debug: 2s ################################## Security ################################ # Uncomment if you want to enable JSONP as a valid return transport

configuration file defines the ACL for the core JVM Memory MBean. This ACL limits the invocation of the gc operation for only users with the manager role. • etc/jmx.acl.cfg configuration file is the most always takes the precedence. You can find some configuration examples: • Only a manager can call GC on the Memory MBean: • Bundles with ID between 0 and 49 can be stopped only by an admin , other bundles manager : # operation = role test = admin getVal = manager, viewer # etc/jmx.acl.java.lang.Memory.cfg gc = manager # etc/jmx.acl.org.apache.karaf.bundles.cfg stop(java.lang.String)[/([1-4])?([0-9]/] = admin

/usr/local/go/src/runtime/asm_amd64.s:1598 +0x1 fp=0xc00011bfe8 sp=0xc00011bfe0 pc=0x4644e1 goroutine 2 [force gc (idle)]: runtime.gopark(0x0?, 0x0?, 0x0?, 0x0?, 0x0?) /usr/local/go/src/runtime/proc.go:381 +0xd6 sp=0xc00004efe0 pc=0x4644e1 created by runtime.init.6 /usr/local/go/src/runtime/proc.go:293 +0x25 goroutine 3 [GC sweep wait]: runtime.gopark(0x0?, 0x0?, 0x0?, 0x0?, 0x0?) /usr/local/go/src/runtime/proc.go:381 +0xd6 pc=0x4644e1 created by runtime.gcenable /usr/local/go/src/runtime/mgc.go:178 +0x6b goroutine 4 [GC scavenge wait]: runtime.gopark(0xc00001c070?, 0x59d4a0?, 0x1?, 0x0?, 0x0?) /usr/local/go/src/runtime/proc

options need to be passed to the Kubernetes controller manager. 1.3.1 - Ensure that the --terminated-pod-gc-threshold argument is set as appropriate (Scored) 1.3.2 - Ensure that the --profiling argument is kube-controller-manager Verify the following options are set in the command section: --terminated-pod-gc-threshold=1000 --profiling=false --address=127.0.0.1 Remediation In the RKE cluster.yml file ensure kube-controller: extra_args: profiling: "false" address: "127.0.0.1" terminated-pod-gc-threshold: "1000" Reconfigure the cluster: rke up --config cluster.yml 2.1.5 - Configure addons

Expected result: '--pass' is present 1.3 Controller Manager 1.3.1 Ensure that the --terminated-pod-gc-threshold argument is set as appropriate (Scored) Result: PASS Remediation: Edit the Controller Manager Self-Assessment Guide - v2.4 29 node and set the --terminated-pod-gc-threshold to an appropriate threshold, for example: --terminated-pod-gc-threshold=10 Audit: /bin/ps -ef | grep kube-controller-manager er | grep -v grep Expected result: '--terminated-pod-gc-threshold' is present 1.3.2 Ensure that the --profiling argument is set to false (Scored) Result: PASS Remediation: Edit the Controller Manager

Expected result: '--pass' is present 1.3 Controller Manager 1.3.1 Ensure that the --terminated-pod-gc-threshold argument is set as appropriate (Scored) Result: PASS Remediation: Edit the Controller Manager Self-Assessment Guide - Rancher v2.5 29 node and set the --terminated-pod-gc-threshold to an appropriate threshold, for example: --terminated-pod-gc-threshold=10 Audit: /bin/ps -ef | grep kube-controller-manager er | grep -v grep Expected result: '--terminated-pod-gc-threshold' is present 1.3.2 Ensure that the --profiling argument is set to false (Scored) Result: PASS Remediation: Edit the Controller Manager

CDC导入i案 D6w5st7e+4 c65su4e 15c7e4e5t+3 ch+5ges 、gc近实k导入和实k读取。 2、计算a擎原生gcCDCe入，不需要额外的业务 字r设计。 3、统一的h据t存储，多o化的计算模型。 4、读取合并后的历史h据可F分利wI存加速。 5、云原生gc。 6、gc增量b取。 7、nm足够简s，无在线l务节u。 i案评D Cu 如何实时#入读取? #3

XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=./logs -verbose:gc - XX:+PrintGCDetails -XX:+PrintGCDateStamps - XX:+PrintTenuringDistribution -Xloggc:./logs/kyuubi-server-gc-%t.log - XX:+UseGCLogFileRotation -XX:NumberOfGCLogFiles=10 kyuubi.delegation.key .update.interval PT24H unused yet dura tion 1.0 .0 kyuubi.delegation .token.gc.interval PT1H unused yet dura tion 1.0 .0 kyuubi.delegation .token.max.lifetime PT168H unused yet dynamicAllocation.shuffleTracking.enabled is enabled, as we can tell Spark to be more active for shuffle data GC. Setting User Default Settings On the server-side, the workloads for different users might be different