ArangoDB3 - Three Node Cluster without DCOS

[Nick Pavlica]

All,

  I would like to configure a three node cluster without DCOS.  The current docs, only mention the command line switches(https://docs.arangodb.com/3.0/Manual/Administration/Configuration/Cluster.html), and when I when I look at the arangod.conf file, I don't see any cluster configuration options for the cluster end points.  Can  you provide an example arangodb.conf file with an example 3 node cluster configuration?  This would be a nice addition to the docs and possibly a blog post.

Thanks!

--Nick

[Wilfried Gösgens]

Hi Nick,
in general all arangodb commandline options map into the configuration file.

so running
  arangodb --help-all
and browsing through the list...
...
Section 'cluster' (Configure the cluster)
  --cluster.agency-endpoint <string...>                 agency endpoint to connect to (default: )
  --cluster.agency-prefix <string>                      agency prefix (default: "")
...

would translate to

[cluster]
agency-endpoint = tcp://192.168.1.1:4001
agency-prefix = mycluster

Hope this helps

Cheers,
Willi

[Nick Pavlica]

Hi Willi,

  I'm having some issues getting the server to start once I change the arangod.conf to reflect the cluster settings:

[cluster]

data-path = /var/lib/arangodb3/cluster

log-path = /var/log/arangodb3/cluster

arangod-path = @SBINDIR@/arangod@PROGRAM_SUFFIX@

dbserver-config = @SYSCONFDIR@/arangod.conf

coordinator-config = @SYSCONFDIR@/arangod.conf

agency-prefix = agency1 

agency-id = 0

agency-size = 3

agency-notify true

server-authentication = false

server-endpoint = tcp://192.168.185.37:5001

agency-endpoint = tcp://192.168.185.37:5001

agency-endpoint = tcp://192.168.162.221:5001

agency-endpoint = tcp://192.168.205.156:5001

I'm not sure where to go next with the configuration.  Any guidance would be appreciated.

-- Nick

[Wilfried Gösgens]

Hi Nick,
the @@ strings are replaced during the build process by cmake.
You have to provide the actual directories there to make it work - i.e. @SYSCONFDIR@ -> /etc/arangodb3/

Cheers,
Willi

[Nick Pavlica]

All,

   I've updated the arangod.conf file to reflect default Ubuntu install locations replacing the @SYSCONFDIR@.  However, the server still fails to restart with this configuration.  I believe that I have all the necessary agency configuration done according to these docs  (https://docs.arangodb.com/3.0/Manual/Deployment/Local.html) and this thread.  I'm sure it's something simple, be we are missing something here..?

.....

[cluster]

data-path = /var/lib/arangodb3/cluster

log-path = /var/log/arangodb3/cluster

#arangod-path = @SBINDIR@/arangod@PROGRAM_SUFFIX@

arangod-path = /usr/sbin/arangod

#dbserver-config = @SYSCONFDIR@/arangod.conf

dbserver-config = /etc/arangodb3/arangod.conf

#coordinator-config = @SYSCONFDIR@/arangod.conf

coordinator-config = /etc/arangodb3/arangod.conf

########  Attempt to configure a cluster ######

agency-prefix = agency1

agency-id = 0

agency-size = 3

agency-notify true

server-authentication = false

server-endpoint = tcp://192.168.185.37:5001

agency-endpoint = tcp://192.168.185.37:5001

agency-endpoint = tcp://192.168.162.221:5001

agency-endpoint = tcp://192.168.205.156:5001

-- Nick

[kishor...@games24x7.com]

Hi Nick,

Have u got this worked?

Even i'm trying to setup a cluster with three nodes having all the three (agency,db,coordinator) on all.

Process running,but i dont think cluster is up and running.

Got below INFO,

INFO {agencycomm} Flaky agency communication to http+tcp://IP1:5001. Unsuccessful consecutive tries: 50 (97.28s). Network checks advised

INFO {agencycomm} Flaky agency communication to http+tcp://IP2:5001. Unsuccessful consecutive tries: 50 (97.28s). Network checks advised

INFO {agencycomm} Flaky agency communication to http+tcp://IP3:5001. Unsuccessful consecutive tries: 50 (97.28s). Network checks advised

any help would be appreciated.

Thanks,

Kishore