Dear list, After some research and digging, it looks like my error is due to a misconfiguration of my 'nifi.properties' file. Actually, removing or commenting all the properties 'nifi.remote.*' solve the problem, I've been facing. Hope that fix will help.
Regards Emmanuel C2 - Restricted De : QUEVILLON EMMANUEL - EXT-SAFRAN ENGINEERING SERVICES (SAFRAN) Envoyé : mardi 1 juin 2021 09:46 À : users@nifi.apache.org Objet : Failed to replicate request GET /nifi-api/flow/current-user Dear list, I'm trying to set up a nifi cluster (3 nodes) secured with https. The cluster is able to start correctly, each node is able to communicate with each other, the primary/coordinator is well elected (reading the logs). I'm able to connect using my TLS certificates generated with tls-toolkit.sh script. So far so good. However, when I try to connect to the UI, this is where the problems appear. >From the UI, I get an error message like: 'java.net.SocketTimeoutException: >timeout' >From the log of the corresponding node I've tried to connect to, I can see >such error: "o.a.n.c.c.h.r.ThreadPoolRequestReplicator Failed to replicate >request GET /nifi-api/flow/current-user to 0.0.0.0:8443 due to >java.net.SocketTimeoutException: timeout" ...... Caused by: >java.net.SocketException: Socket closed" Strange thing is that, if I connect to the primary node UI, no such error is displayed on the UI. I can access the cluster menu and all other menu without problems. Only none coordinator and primary nodes throw these errors. >From the logs of the coordinator node, I can see (log level set to DEBUG) that >heartbeat messages are well transmitted from other nodes. Regarding nifi properties file, each nodes have this common configuration: Nifi.remote.input.host=hostname-node(1 or 2 or 3) # based on which node we are running on Nifi.web.https.host=0.0.0.0 Nifi.web.https.port=8443 Nifi.web.proxy.host=ip-of-node1:8443,ip-of-node2:8443,ip-of-node3:8443,hostname-node1:8443,hostname-node2:8443,hostname-node3:8443 ... Nifi.cluster.protocol.is.secure=true Nifi.cluster.is.node=true Nifi.cluster.node.address=hostname-node(1 or 2 or 3) # based on which node we are running on Nifi.cluster.node.protocol.port=11443 ... Nifi.zookeeper.connect.string=hostname-node1:2181,hostname-node2:2181,hostname-node3:2181 Each nodes have their /etc/hosts file set as follow: 192.168.136.15 nifi-node1 192.168.136.30 nifi-node2 192.168.136.5 nifi-node3 Could someone light my lantern? Is there something misconfigured? Thanks for any help. Regards Emmanuel C2 - Restricted # " Ce courriel et les documents qui lui sont joints peuvent contenir des informations confidentielles, être soumis aux règlementations relatives au contrôle des exportations ou ayant un caractère privé. S'ils ne vous sont pas destinés, nous vous signalons qu'il est strictement interdit de les divulguer, de les reproduire ou d'en utiliser de quelque manière que ce soit le contenu. Toute exportation ou réexportation non autorisée est interdite Si ce message vous a été transmis par erreur, merci d'en informer l'expéditeur et de supprimer immédiatement de votre système informatique ce courriel ainsi que tous les documents qui y sont attachés." ****** " This e-mail and any attached documents may contain confidential or proprietary information and may be subject to export control laws and regulations. If you are not the intended recipient, you are notified that any dissemination, copying of this e-mail and any attachments thereto or use of their contents by any means whatsoever is strictly prohibited. Unauthorized export or re-export is prohibited. If you have received this e-mail in error, please advise the sender immediately and delete this e-mail and all attached documents from your computer system." #
