On 2016/12/8 5:36, Andy Zhou wrote:
On Tue, Dec 6, 2016 at 9:41 PM, Guoshuai Li <[email protected]
<mailto:[email protected]>> wrote:
When the master node's OVNDB process fails, the local node demote
to the slave.
Failure cause is that the OVNDB process is stop, So the need to
re-run the process up.
if return $OCF_NOT_RUNNING will not demote the node to slave.
Signed-off-by: Guoshuai Li <[email protected]
<mailto:[email protected]>>
---
ovn/utilities/ovndb-servers.ocf | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/ovn/utilities/ovndb-servers.ocf
b/ovn/utilities/ovndb-servers.ocf
index 1cf6f20..8a64e88 100755
--- a/ovn/utilities/ovndb-servers.ocf
+++ b/ovn/utilities/ovndb-servers.ocf
@@ -283,7 +283,7 @@ ovsdb_server_promote() {
ovsdb_server_demote() {
ovsdb_server_check_status
if [ $? = $OCF_NOT_RUNNING ]; then
- return $OCF_NOT_RUNNING
+ ovsdb_server_start
The logic here looks odd to me. demote() operation should be done
against running OVNDBs.
Why is OVNDB stopped in the first place? If they are stopped by
admin, it would be odd that ocf script
would restart them.
I agree that demote () should not start OVN-DB.
But when the OVN-DB process crashes, who might restart it?
I put the master node's OVSDB process with 'kill -9', It does not
migrate because of depends on VIP.
but after a long time did not start, and no master node.
/
Full list of resources://
// Master/Slave Set: ovndb_servers-master [ovndb_servers]//
// ovndb_servers (ocf::ovn:ovndb-servers): Started ovn2//
// ovndb_servers (ocf::ovn:ovndb-servers): Started ovn3//
// ovndb_servers (ocf::ovn:ovndb-servers): //Stopped//
// Slaves: [ ovn2 ovn3 ]//
// Stopped: [ ovn1 ]//
// VirtualIP (ocf::heartbeat:IPaddr2): Started ovn1//
//Failed Actions://
//* ovndb_servers_demote_0 on ovn1 'not running' (7): call=21,
status=complete, exitreason='none',//
// last-rc-change='Thu Dec 8 13:41:14 2016', queued=0ms, exec=69ms/
By debugging I found that pacemaker did not call ovsdb_server_start(),
it call ovsdb_server_demote() and ovsdb_server_stop().
Who should start it? ovsdb_server_monitor ()? or pacemaker error?
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