fiware

问题 I am having the same problem as here and try to solve it, but I do not know how to properly format the datastore so cygnus will not throw the persistence error. My orion suscription is this one: (curl localhost:1026/v1/subscribeContext -s -S --header 'Content-Type: application/json' \ --header 'Accept: application/json' -d @- | python -mjson.tool) <<EOF { "entities": [ { "type": "Event", "isPattern": "false", "id": "es-leon-0" }, { "type": "Event", "isPattern": "false", "id": "es-leon-1" } ],

问题 I am trying to delete a folder in my Cosmos account, but I get the SafeModeException: # hadoop fs -rmr /home/<user>/input rmr: org.apache.hadoop.hdfs.server.namenode.SafeModeException: Cannot delete /user/<user>/input. Name node is in safe mode 回答1: During start up Namenode loads the filesystem state from fsimage and edits log file. It then waits for datanodes to report their blocks so that it does not prematurely start replicating the blocks though enough replicas already exist in the

问题 I'm using Fiware-Orion ContextBroker 0.28, the dockerized version in my localhost on ubuntu 15.10 64 bits. $ curl localhost:1026/version { "orion" : { "version" : "0.28.0-next", "uptime" : "0 d, 0 h, 0 m, 6 s", "git_hash" : "067e13618c247daa4af61f82d7831f3015d9eb5d", "compile_time" : "Mon Mar 14 13:04:02 UTC 2016", "compiled_by" : "root", "compiled_in" : "838a42ae8431" } } The docker configuration I'm using is: $ cat docker-compose.yml mongo: image: mongo:2.6 command: --smallfiles --nojournal

问题 I installed cygnus using RPMs on fiware image CentOS-7-x64 and I can't start it as a service, Here is my logs: [centos@cygnus-mongo conf]$ sudo service cygnus start Starting cygnus (via systemctl): Job for cygnus.service failed. See 'systemctl status cygnus.service' and 'journalctl -xn' for details. [FAILED] [centos@cygnus-mongo conf]$ sudo journalctl -xn -- Logs begin at mer. 2015-10-07 07:48:29 UTC, end at mer. 2015-10-07 10:02:35 UTC. -- oct. 07 10:02:20 cygnus-mongo.novalocal su[5700]:

问题 Based on this answer about how to scale Orion Context Broker with load balancing https://stackoverflow.com/a/33068119/3706998 what should be the behavior of subscriptions and also notifications? Witch server should it come from? What is the workflow? Could it cause some disturbe or cloned subscriptions ? 回答1: Let's consider different cases, depending on subscription cache usage. Let's consider two Orion nodes (A and B) without loss of generality, both sharing the same MongoDB instance. Using

问题 I have a subscription made to an entity's attribute to a MySql sink. The problem is that while I was testing my rest service to do a subscription if the data was not yet persisted, i made a ton of subscriptions. Now every time I do an update on the entity's attribute what happens is that the value is persisted a lot of times. Is there anyway of deleting a subscription without the subscriptionID? 回答1: Yes, it is. First, you can list the existing subscriptions with the GET /v2/subscriptions

问题 I have a subscription made to an entity's attribute to a MySql sink. The problem is that while I was testing my rest service to do a subscription if the data was not yet persisted, i made a ton of subscriptions. Now every time I do an update on the entity's attribute what happens is that the value is persisted a lot of times. Is there anyway of deleting a subscription without the subscriptionID? 回答1: Yes, it is. First, you can list the existing subscriptions with the GET /v2/subscriptions

问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 5 years ago . I created a Centos x64 VM instance with a 12GB disk using the FI-WARE cloud. I can access it with not problem and I have started installing software. However, the default created partition /dev/vda1 is only 5GB and I have already filled it. I would like to know how to extend the partition to use the full disk.

问题 I want to send images from various android to context broker, I am not sure how I would go about decoding the image from string format and then storing it to the file system and database respectively. Would I have to develop my own python script or could Cygnus help me out here? 回答1: Although there are several approaches to transcode a binary file (such an image) into text (e.g. Base64) it doesn't use to be a good idea in Orion Context Broker. Big static files are better placed in an Object

问题 I am using Orion Context Broker version 1.1.0 I had the only entity in my DB: { "id"=>"Room1", "type"=>"Room", "temperature"=>{"type"=>"none", "value"=>10, "metadata"=>{}} } I did not have any subscription . Then I created 3 subscriptions : [ { "subject"=>{"entities"=>[{"id"=>"Room1", "idPattern"=>"", "type"=>""}], "condition"=>{"attrs"=>["temperature"], "expression"=>{"q"=>"temperature>10"}}} }, { "subject"=>{"entities"=>[{"id"=>"Room1", "idPattern"=>"", "type"=>""}], "condition"=>{"attrs"=>