[ https://issues.apache.org/jira/browse/HADOOP-15707?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16597972#comment-16597972 ]
Lukas Majercak commented on HADOOP-15707: ----------------------------------------- Add HADOOP-15705.002.patch for setting up IsRouterActiveServlet in RouterHttpServer > Add IsActiveServlet to be used for Load Balancers > ------------------------------------------------- > > Key: HADOOP-15707 > URL: https://issues.apache.org/jira/browse/HADOOP-15707 > Project: Hadoop Common > Issue Type: New Feature > Components: common > Reporter: Lukas Majercak > Assignee: Lukas Majercak > Priority: Major > Attachments: HADOOP-15707.000.patch, HADOOP-15707.001.patch, > HADOOP-15707.002.patch > > > Hadoop has a few services with HA setups and it is common to set them behind > Load Balancers. > We should add a way for the Load Balancers to understand what should be the > UI to show. > For example, the standby RM just redirects the requests to the active RM. > However, if both RMs are behind a Load Balancer the IP might not be reachable. > Most Load balancers have probes to check if a server reports HTTP code 200: > * > [Azure|https://docs.microsoft.com/en-us/azure/load-balancer/load-balancer-custom-probe-overview] > * > [AWS|https://docs.microsoft.com/en-us/azure/load-balancer/load-balancer-custom-probe-overview] > Components in Hadoop (e.g., NN, RM, Router,...) should have a unified way to > report if they are active. -- This message was sent by Atlassian JIRA (v7.6.3#76005) --------------------------------------------------------------------- To unsubscribe, e-mail: common-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: common-issues-h...@hadoop.apache.org