[#MCOL-3623] Changing hostname on UM1 sets the cluster in DEGRADED mode

We found out that setting the hostname on a running UM1 node causes the cluster to become DEGRADED and the mysqld process to go in MAN_OFFLINE.
Despite the status reported, however, the cluster works just fine.

mcsadmin> getsysteminfo

getsysteminfo   Fri Nov 22 14:30:39 2019

System columnstore-1

System and Module statuses

Component     Status                       Last Status Change

------------  --------------------------   ------------------------

System        ACTIVE                       Fri Nov 22 14:29:46 2019

Module pm1    ACTIVE                       Fri Nov 22 14:29:43 2019

MariaDB ColumnStore Process statuses

Process             Module    Status            Last Status Change        Process ID

------------------  ------    ---------------   ------------------------  ----------

ProcessMonitor      pm1       ACTIVE            Fri Nov 22 14:28:21 2019       21862

ProcessManager      pm1       ACTIVE            Fri Nov 22 14:28:27 2019       21956

DBRMControllerNode  pm1       ACTIVE            Fri Nov 22 14:29:22 2019       23529

ServerMonitor       pm1       ACTIVE            Fri Nov 22 14:29:24 2019       23590

DBRMWorkerNode      pm1       ACTIVE            Fri Nov 22 14:29:24 2019       23611

PrimProc            pm1       ACTIVE            Fri Nov 22 14:29:28 2019       23682

ExeMgr              pm1       ACTIVE            Fri Nov 22 14:29:32 2019       23723

WriteEngineServer   pm1       ACTIVE            Fri Nov 22 14:29:36 2019       23814

DDLProc             pm1       ACTIVE            Fri Nov 22 14:29:40 2019       23884

DMLProc             pm1       ACTIVE            Fri Nov 22 14:29:44 2019       23952

mysqld              pm1       ACTIVE            Fri Nov 22 14:29:22 2019       23419

Active Alarm Counts: Critical = 0, Major = 0, Minor = 0, Warning = 0, Info = 0

mcsadmin> exit

exit   Fri Nov 22 14:30:55 2019

Exiting the MariaDB ColumnStore Admin Console

[root@columnstore ~]# hostnamectl set-hostname testbox

[root@columnstore ~]# hostname

testbox

[root@columnstore ~]# mcsadmin

MariaDB ColumnStore Admin Console

   enter 'help' for list of commands

   enter 'exit' to exit the MariaDB ColumnStore Command Console

   use up/down arrows to recall commands

Active Alarm Counts: Critical = 0, Major = 0, Minor = 0, Warning = 0, Info = 0

Critical Active Alarms:

mcsadmin> getsysteminfo

getsysteminfo   Fri Nov 22 14:31:31 2019

System columnstore-1

System and Module statuses

Component     Status                       Last Status Change

------------  --------------------------   ------------------------

System        ACTIVE                       Fri Nov 22 14:29:46 2019

Module pm1    DEGRADED                     Fri Nov 22 14:31:18 2019

MariaDB ColumnStore Process statuses

Process             Module    Status            Last Status Change        Process ID

------------------  ------    ---------------   ------------------------  ----------

ProcessMonitor      pm1       ACTIVE            Fri Nov 22 14:28:21 2019       21862

ProcessManager      pm1       ACTIVE            Fri Nov 22 14:28:27 2019       21956

DBRMControllerNode  pm1       ACTIVE            Fri Nov 22 14:29:22 2019       23529

ServerMonitor       pm1       ACTIVE            Fri Nov 22 14:29:24 2019       23590

DBRMWorkerNode      pm1       ACTIVE            Fri Nov 22 14:29:24 2019       23611

PrimProc            pm1       ACTIVE            Fri Nov 22 14:29:28 2019       23682

ExeMgr              pm1       ACTIVE            Fri Nov 22 14:29:32 2019       23723

WriteEngineServer   pm1       ACTIVE            Fri Nov 22 14:29:36 2019       23814

DDLProc             pm1       ACTIVE            Fri Nov 22 14:29:40 2019       23884

DMLProc             pm1       ACTIVE            Fri Nov 22 14:29:44 2019       23952

mysqld              pm1       MAN_OFFLINE       Fri Nov 22 14:31:18 2019

Active Alarm Counts: Critical = 0, Major = 0, Minor = 0, Warning = 0, Info = 0

mcsadmin>

[MCOL-3623] Changing hostname on UM1 sets the cluster in DEGRADED mode Created: 2019-11-22 Updated: 2021-02-19 Resolved: 2021-02-19
Status:	Closed
Project:	MariaDB ColumnStore
Component/s:	N/A
Affects Version/s:	1.2.5
Fix Version/s:	N/A

[MCOL-3623] Changing hostname on UM1 sets the cluster in DEGRADED mode Created: 2019-11-22 Updated: 2021-02-19 Resolved: 2021-02-19