3 Weave 2.0.1 is supported by kubespray
5 Weave uses [**consensus**](https://www.weave.works/docs/net/latest/ipam/##consensus) mode (default mode) and [**seed**](https://www.weave.works/docs/net/latest/ipam/#seed) mode.
7 `Consensus` mode is best to use on static size cluster and `seed` mode is best to use on dynamic size cluster
9 Weave encryption is supported for all communication
11 * To use Weave encryption, specify a strong password (if no password, no encryption)
14 # In file ./inventory/sample/group_vars/k8s_cluster.yml
15 weave_password: EnterPasswordHere
18 This password is used to set an environment variable inside weave container.
20 Weave is deployed by kubespray using a daemonSet
22 * Check the status of Weave containers
26 kubectl -n kube-system get pods | grep weave
28 weave-net-50wd2 2/2 Running 0 2m
29 weave-net-js9rb 2/2 Running 0 2m
32 There must be as many pods as nodes (here kubernetes have 2 nodes so there are 2 weave pods).
34 * Check status of weave (connection,encryption ...) for each node
38 curl http://127.0.0.1:6784/status
40 Version: 2.0.1 (up to date; next check at 2017/08/01 13:51:34)
44 Name: fa:16:3e:b3:d6:b2(node1)
46 PeerDiscovery: enabled
48 Connections: 2 (1 established, 1 failed)
49 Peers: 2 (with 2 established connections)
55 DefaultSubnet: 10.233.64.0/18
58 * Check parameters of weave for each node
63 # output on node1 (here its use seed mode)
64 root 8559 0.2 3.0 365280 62700 ? Sl 08:25 0:00 /home/weave/weaver --name=fa:16:3e:b3:d6:b2 --port=6783 --datapath=datapath --host-root=/host --http-addr=127.0.0.1:6784 --status-addr=0.0.0.0:6782 --docker-api= --no-dns --db-prefix=/weavedb/weave-net --ipalloc-range=10.233.64.0/18 --nickname=node1 --ipalloc-init seed=fa:16:3e:b3:d6:b2,fa:16:3e:f0:50:53 --conn-limit=30 --expect-npc 192.168.208.28 192.168.208.19
67 ## Consensus mode (default mode)
69 This mode is best to use on static size cluster
73 This mode is best to use on dynamic size cluster
75 The seed mode also allows multi-clouds and hybrid on-premise/cloud clusters deployment.
77 * Switch from consensus mode to seed/Observation mode
79 See [weave ipam documentation](https://www.weave.works/docs/net/latest/tasks/ipam/ipam/) and use `weave_extra_args` to enable.