[Pacemaker] Multicast corosync packets and default route

[Daniel Dehennin]

Daniel Dehennin <daniel.dehennin at baby-gnu.org> writes:

> Hello,
>

[...]

> I only manage to have my VM as corosync member like others when default
> the route is on the same interface as my multicast traffic.

Here are some corosync informations:

On one working host:

    root at nebula3:~# corosync-quorumtool
    Quorum information
    ------------------
    Date:             Fri Nov  7 14:42:43 2014
    Quorum provider:  corosync_votequorum
    Nodes:            4
    Node ID:          1084811080
    Ring ID:          20508
    Quorate:          Yes
    
    Votequorum information
    ----------------------
    Expected votes:   4
    Highest expected: 4
    Total votes:      4
    Quorum:           3
    Flags:            Quorate WaitForAll LastManStanding
    
    Membership information
    ----------------------
        Nodeid      Votes Name
        1084811078          1 nebula1.eole.lan
        1084811079          1 nebula2.eole.lan
        1084811080          1 nebula3.eole.lan (local)
        1084811118          1 quorum.eole.lan


On the failing node:

    root at one-frontend:~# corosync-quorumtool
    Quorum information
    ------------------
    Date:             Fri Nov  7 14:42:37 2014
    Quorum provider:  corosync_votequorum
    Nodes:            1
    Node ID:          1084811119
    Ring ID:          20264
    Quorate:          No
    
    Votequorum information
    ----------------------
    Expected votes:   3
    Highest expected: 3
    Total votes:      1
    Quorum:           2 Activity blocked
    Flags:            WaitForAll LastManStanding
    
    Membership information
    ----------------------
        Nodeid      Votes Name
        1084811119          1 one-frontend.eole.lan (local)

The “Ring ID” are not the same.

Regards.
-- 
Daniel Dehennin
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# Please read the openais.conf.5 manual page

totem {
	version: 2

	# This specifies the name of cluster and it's used for
	# automatic generating of multicast address.
	cluster_name: one

	# How long before declaring a token lost (ms)
	token: 3000

	# How many token retransmits before forming a new configuration
	token_retransmits_before_loss_const: 10

	# How long to wait for join messages in the membership protocol (ms)
	join: 60

	# How long to wait for consensus to be achieved before starting a new round of membership configuration (ms)
	consensus: 3600

	# Turn off the virtual synchrony filter
	vsftype: none

	# Number of messages that may be sent by one processor on receipt of the token
	max_messages: 20

	# Limit generated nodeids to 31-bits (positive signed integers)
	clear_node_high_bit: yes

	# This specifies which HMAC authentication should be used to
	# authenticate all messages. Valid values are none (no
	# authentication), md5, sha1, sha256, sha384 and sha512.
	crypto_hash: sha256

	# This specifies which cipher should be used to encrypt all
	# messages.  Valid values are none (no encryption), aes256,
	# aes192, aes128 and 3des.  Enabling crypto_cipher, requires
	# also enabling of crypto_hash.
	crypto_cipher: aes256

	# How many threads to use for encryption/decryption
 	threads: 0

	# Optionally assign a fixed node id (integer)
	# nodeid: 1234

	# This specifies the mode of redundant ring, which may be none, active, or passive.
 	rrp_mode: none

 	interface {
		# The following values need to be set based on your environment 
		ringnumber: 0
		bindnetaddr: 192.168.231.64
		mcastaddr: 226.94.1.1
		mcastport: 5405
	}
}

amf {
	mode: disabled
}

quorum {
	# Quorum for the Pacemaker Cluster Resource Manager
	provider: corosync_votequorum
	# Number of bare metal hosts, VM are managed by pacemaker and
	# “expected_votes” will increase when they get started
	expected_votes: 3
	# Pacemaker resources (so VMs) will not be started until
	# number of nodes is equal to “expected_votes”
	wait_for_all: 1
	last_man_standing: 1
}

aisexec {
        user:   root
        group:  root
}

logging {
        fileline: off
        to_stderr: no
        to_logfile: no
        to_syslog: yes
	syslog_facility: daemon
        debug: off
        timestamp: on
        logger_subsys {
                subsys: AMF
                debug: off
#                tags: enter|leave|trace1|trace2|trace3|trace4|trace6
        }
}
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