Changes between Version 3 and Version 4 of CMANconfig


Ignore:
Timestamp:
05/22/11 18:20:25 (3 years ago)
Author:
digimer
Comment:

Fixed the last copy from the old wiki to work on the new Trac syntax.

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  • CMANconfig

    v3 v4  
    1 = Configuring CMAN in RHEL 4 = 
     1[[TOC]] 
     2 
     3== Configuring CMAN in RHEL 4 == 
    24There are several variables you can configure in cman. These can be changed in cluster.conf, eg: 
    35 
     
    1416The variables are: 
    1517 
    16 == joinwait_timeout == 
     18=== joinwait_timeout === 
    1719Time to wait while sending "Join Request" messages. This value should be at least twice the HELLO timer, probably 3 times. If a node does not receive a join_ack in this time it will give up trying to join a cluster. Join Request messages are sent to nodes in response to HELLO messages. 
    1820 
    1921In seconds, the default is 16 
    2022 
    21 == joinconf_timeout == 
     23=== joinconf_timeout === 
    2224How long we wait after sending a "Join Confirm" message to a new node before regarding that node as died during joining. 
    2325 
    2426In seconds, the default is 30. 
    2527 
    26 == hello_timer == 
     28=== hello_timer === 
    2729The period between sending HELLO messages. 
    2830 
    2931In seconds, the default is 5. 
    3032 
    31 == deadnode_timeout == 
     33=== deadnode_timeout === 
    3234If we don't get a message from a node in this period, then remove it from the cluster. 
    3335 
    3436In seconds, the default is 21. 
    3537 
    36 == transition_timeout == 
     38=== transition_timeout === 
    3739The maximum length of time a state transition should take. If a transition takes longer than this then the nodes will elect a new master and restart the transition. 
    3840 
    3941In seconds, the default is 15. 
    4042 
    41 == transition_restarts == 
     43=== transition_restarts === 
    4244Maximum number of transition restarts before we will leave the cluster. 
    4345 
    4446The default is 10. 
    4547 
    46 == max_nodes == 
     48=== max_nodes === 
    4749Maximum allowed number of nodes in a cluster. 
    4850 
    4951The default is 128. 
    5052 
    51 == sm_debug_size == 
     53=== sm_debug_size === 
    5254Size in bytes of Service Manager debug buffer 
    5355 
    5456The default is 256. 
    5557 
    56 == newcluster_timeout == 
     58=== newcluster_timeout === 
    5759The amount of time to send NEWCLUSTER messages before assuming there are no other clusters (with our ID) on this network and forming our own. 
    5860 
    5961In seconds, the default is 16. 
    6062 
    61 == max_retries == 
     63=== max_retries === 
    6264Number of times cman will resend a message before declaring it lost. 
    6365