/etc/hosts file was not updated after nodes removing

[Dmitry Belyaninov]

Scenario:
Deploy cluster: 3 controllers + 1 compute, Neutron VLAN
Remove 2 controllers, re-deploy

after that hosts files will contain info about removed controllers:

[root@nailgun ~]# fuel nodes
id | status | name | cluster | ip | mac | roles | pending_roles | online | group_id
---|----------|------------------|---------|-------------|-------------------|------------|---------------|--------|---------
6 | discover | Untitled (76:6f) | None | 10.109.0.10 | 64:90:a6:46:76:6f | | | True | None
1 | ready | Untitled (0d:02) | 1 | 10.109.0.3 | 64:d1:b2:df:0d:02 | controller | | True | 1
4 | ready | Untitled (ba:88) | 1 | 10.109.0.7 | 64:21:6c:87:ba:88 | compute | | True | 1
9 | discover | Untitled (76:a5) | None | 10.109.0.9 | 64:2a:59:ad:76:a5 | | | True | None
11 | discover | Untitled (f6:c7) | None | 10.109.0.6 | 64:69:cd:97:f6:c7 | | | True | None
5 | discover | Untitled (de:b8) | None | 10.109.0.4 | 64:0d:d3:ea:de:b8 | | | True | None
7 | discover | Untitled (61:3e) | None | 10.109.0.11 | 64:bd:7c:34:61:3e | | | True | None
8 | discover | Untitled (87:d7) | None | 10.109.0.8 | 64:9b:bc:ae:87:d7 | | | True | None
10 | discover | Untitled (55:ce) | None | 10.109.0.5 | 64:e6:3a:d7:55:ce | | | True | None
[root@nailgun ~]# ssh node-4
Warning: Permanently added 'node-4' (ECDSA) to the list of known hosts.
Welcome to Ubuntu 14.04.3 LTS (GNU/Linux 3.13.0-77-generic x86_64)

 * Documentation: https://help.ubuntu.com/
Last login: Tue Feb 9 05:57:08 2016 from 10.109.0.2
root@node-4:~#
root@node-4:~# cat /etc/hosts
# HEADER: This file was autogenerated at 2016-02-08 16:21:25 +0000
# HEADER: by puppet. While it can still be managed manually, it
# HEADER: is definitely not recommended.
127.0.0.1 localhost
::1 localhost ip6-localhost ip6-loopback
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
10.109.1.5 node-4.test.domain.local node-4
10.109.1.7 node-2.test.domain.local node-2
10.109.1.6 node-3.test.domain.local node-3
10.109.1.6 messaging-node-3.test.domain.local messaging-node-3
10.109.1.4 messaging-node-1.test.domain.local messaging-node-1
10.109.1.7 messaging-node-2.test.domain.local messaging-node-2
10.109.1.4 node-1.test.domain.local node-1
10.109.1.5 messaging-node-4.test.domain.local messaging-node-4
root@node-4:~# exit
logout
Connection to node-4 closed.
[root@nailgun ~]# ssh node-1
Warning: Permanently added 'node-1' (ECDSA) to the list of known hosts.
Welcome to Ubuntu 14.04.3 LTS (GNU/Linux 3.13.0-77-generic x86_64)

 * Documentation: https://help.ubuntu.com/
root@node-1:~# cat /etc/hosts
# HEADER: This file was autogenerated at 2016-02-08 15:21:52 +0000
# HEADER: by puppet. While it can still be managed manually, it
# HEADER: is definitely not recommended.
127.0.0.1 localhost
::1 localhost ip6-localhost ip6-loopback
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
10.109.1.5 node-4.test.domain.local node-4
10.109.1.7 node-2.test.domain.local node-2
10.109.1.6 node-3.test.domain.local node-3
10.109.1.6 messaging-node-3.test.domain.local messaging-node-3
10.109.1.4 messaging-node-1.test.domain.local messaging-node-1
10.109.1.7 messaging-node-2.test.domain.local messaging-node-2
10.109.1.4 node-1.test.domain.local node-1
10.109.1.5 messaging-node-4.test.domain.local messaging-node-4
root@node-1:~#
root@node-1:~# cat /etc/corosync/corosync.conf
compatibility: whitetank

quorum {
  provider: corosync_votequorum
        two_node: 0
   }

nodelist {
  node {
    # node-1.test.domain.local
    ring0_addr: 10.109.1.4
    nodeid: 1
  }
}
..........

VERSION:
  feature_groups:
    - mirantis
  production: "docker"
  release: "8.0"
  api: "1.0"
  build_number: "529"
  build_id: "529"
  fuel-nailgun_sha: "baec8643ca624e52b37873f2dbd511c135d236d9"
  python-fuelclient_sha: "4f234669cfe88a9406f4e438b1e1f74f1ef484a5"
  fuel-agent_sha: "658be72c4b42d3e1436b86ac4567ab914bfb451b"
  fuel-nailgun-agent_sha: "b2bb466fd5bd92da614cdbd819d6999c510ebfb1"
  astute_sha: "b81577a5b7857c4be8748492bae1dec2fa89b446"
  fuel-library_sha: "e2d79330d5d708796330fac67722c21f85569b87"
  fuel-ostf_sha: "3bc76a63a9e7d195ff34eadc29552f4235fa6c52"
  fuel-mirror_sha: "fb45b80d7bee5899d931f926e5c9512e2b442749"
  fuelmenu_sha: "e071216cb214e34b4d861478033425ee6a54a3be"
  shotgun_sha: "63645dea384a37dde5c01d4f8905566978e5d906"
  network-checker_sha: "a43cf96cd9532f10794dce736350bf5bed350e9d"
  fuel-upgrade_sha: "616a7490ec7199f69759e97e42f9b97dfc87e85b"
  fuelmain_sha: "a365f05b903368225da3fea9aa42afc1d50dc9b4"

[Dmitry Belyaninov (dbelyaninov)]

It is strange but I can't generate snapshot, contact me ASAP, before cluster alive.