Sunday, June 18, 2017

Host file, local host and Virus Scanner



https://security.stackexchange.com/questions/96418/localhost-loopback-risk





Catching up on Android 2017

Sunday, June 4, 2017

Managing Elastic Search Domains



http://docs.aws.amazon.com/elasticsearch-service/latest/developerguide/es-managedomains.html



To prevent overloading a dedicated master node, you can monitor usage with the Amazon CloudWatch metrics that are shown in the following table. Use a larger instance type for dedicated master nodes when these metrics reach their respective maximum values.







FreeStorageSpace (Minimum)Specifies the free space, in megabytes, for the single data node with the least available free space in a cluster. Amazon ES throws a ClusterBlockExceptionwhen this metric reaches 0. To recover, you must either delete indices, add larger instances, or add EBS-based storage to existing instances. For more information, see Recovering from a Lack of Free Storage Space.
Relevant statistics: Minimum
CloudWatch MetricGuideline
MasterCPUUtilizationMeasures the percentage utilization of the CPU for the dedicated master nodes. We recommend increasing the size of the instance type when this metric exceeds 40% with a domain status of Active and exceeds 60% with a domain status of Processing.
MasterJVMMemoryPressureMeasures the percentage utilization of the JVM memory for the dedicated master nodes. We recommend increasing the size of the instance type when this metric exceeds 60% with a domain status of Active and exceeds 85% with a domain status of Processing.