Hi, Glad it helped! Also note the fix has already been merged to 1.2.0
Cheers On 6 Apr 2017 11:53, "尹文才" <batman...@gmail.com> wrote: > Hi Arnaud and Andre, thanks very much for your help, now the NiFi cluster > is able to start up very fast after updating the bootstrap.conf to use > /dev/./urandom as an extra Java parameter. Let's just hope the fix for the > problem will be included in later NiFi version(1.2.0?). > > 2017-04-05 20:22 GMT+08:00 Arnaud G <greatpat...@gmail.com>: > >> Hi! >> >> We had the same problem on Openstack (on clustered and non clustered >> instances) and the problem can easily be solved by changing the entropy >> source to /dev/urandom in the Java security parameters. >> >> Regards, >> >> On Wed, Apr 5, 2017 at 1:07 PM, 尹文才 <batman...@gmail.com> wrote: >> >>> Thanks Andre, you mean the slow startup of NiFi secure cluster on >>> openstack currently could be remedied by updating bootstrap.conf to >>> instruct NiFi to use */dev/urandom, I will give it a try tomorrow. By >>> the way, NiFi starts up very slow in standalone mode as well when deployed >>> on openstack environment, according to my test, I had deployed a single >>> fresh NiFi node(non-secure) on openstack and it took around 7 minutes to >>> get up. Do you have any ideas of this problem?* >>> >>> 2017-04-05 17:48 GMT+08:00 Andre <andre-li...@fucs.org>: >>> >>>> Hi, >>>> >>>> Sorry for the abrupt message it was sent before I finished typing... :-) >>>> >>>> Some users have issues due to lack of entropy within the VMs. This was >>>> covered on 1.2.0-SNAPSHOT but users of old versions may need to configure >>>> entropy options manually. >>>> >>>> Let me know if it helps. >>>> >>>> Kind regards >>>> >>>> On Wed, Apr 5, 2017 at 7:45 PM, Andre <andre-li...@fucs.org> wrote: >>>> >>>>> Hi, >>>>> >>>>> Can you please try the fix discussed here: >>>>> >>>>> https://issues.apache.org/jira/browse/NIFI-3313 >>>>> >>>>> Kind regards >>>>> >>>>> On Wed, Apr 5, 2017 at 7:36 PM, 尹文才 <batman...@gmail.com> wrote: >>>>> >>>>>> Hi guys, I have been using apache nifi since version 0.7 and as I >>>>>> know from my previous experiences that nifi should be up and running in >>>>>> less than 1 minute(standalone mode). Recently my company has switched >>>>>> from >>>>>> running in Vmware ESXI to openstack and thus I reinstalled nifi 1.1.2 in >>>>>> openstack virtual machines(2 nodes cluster). To my surprise, nifi started >>>>>> up very slow and it almost took 6-7 minutes which is much slower than >>>>>> before. >>>>>> >>>>>> I actually was not very familiar with openstack and it was setup >>>>>> and configured by someone else, but I know that there're 2 network >>>>>> interfaces for the virtual machine, one is an internal IP(10.0.0.*, for >>>>>> communication with machines inside openstack) and the other one is an >>>>>> external IP(192.168.227.*, for communication with office network, I use >>>>>> this IP to access the nifi web UI) >>>>>> >>>>>> I then decided to check the logs(nifi-app.log) and I found that it >>>>>> took the most time between the following 2 log lines: >>>>>> >>>>>> 2017-04-05 16:59:09,162 INFO [main] >>>>>> o.a.nifi.properties.NiFiPropertiesLoader >>>>>> Loaded 121 properties from /usr/local/nifi/./conf/nifi.properties >>>>>> 2017-04-05 17:03:48,810 INFO [main] >>>>>> o.a.n.admin.AuditDataSourceFactoryBean >>>>>> Database not built for repository: >>>>>> >>>>>> but the logs didn't give me any useful clues why it would be so >>>>>> slow. So i dived into nifi's source code and tried to debug to find out >>>>>> the reason, it appeared to me that the application spent the most >>>>>> time at start method of class JettyServer when it tries to start the >>>>>> jetty server: >>>>>> >>>>>> // start the server >>>>>> server.start(); >>>>>> >>>>>> I checked the time it took to start the NiFi server in the log: >>>>>> >>>>>> 2017-04-05 17:08:55,149 INFO [main] org.apache.nifi.NiFi Controller >>>>>> initialization took 590449683493 nanoseconds. >>>>>> >>>>>> >>>>>> the time '*590449683493 nanoseconds*' equals approximately to 10 minutes. >>>>>> >>>>>> I'm also not very familiar with Jetty, not sure what's going on here. >>>>>> Did anyone come across this slow >>>>>> >>>>>> startup issue or does anyone have any idea of this problem? Thanks. >>>>>> >>>>>> btw, I've attached the logs. >>>>>> >>>>>> >>>>>> >>>>> >>>>> >>>> >>> >> >
