ASMCMD-8102: no connection to Oracle ASM; command requires Oracle ASM to run

One of the servers in my environment, i found ASM instance strange behavior, none of the ASM commands works and saying idle instance, but you can see the ASM instance is running if i check with ps -ef and database also running fine, i am able to switch logfile. 

when i run ASM commands i am getting below error.

oracle@oradb_dev:~[DB->orcl]$asmcmd lsdg

Connected to an idle instance.

ASMCMD-8102: no connection to Oracle ASM; command requires Oracle ASM to run

when i try to connect ASM instance, it says idle instance.

oracle@oradb_dev:~[DB->orcl]$sqlplus / as sysasm

SQL*Plus: Release 12.2.0.1.0 Production on Fri May 8 07:14:24 2020

Copyright (c) 1982, 2016, Oracle. All rights reserved.

Connected to an idle instance.

SQL> 

I can see the following message in alertlog.

Process m000 died, see its trace file

2020-05-07T11:36:25.151381+00:00

Process m000 died, see its trace file

2020-05-07T11:36:38.154337+00:00

Fix:

Oracle suggest to restart the HA stack. after restart HA stack, issue got resolved.