Dépannage de la pile DCS

Cet article présente les étapes de dépannage pour évaluer, gérer et surveiller l'état de la pile DCS.

Ces étapes permettent d'identifier les problèmes de niveau de service au sein de la pile DCS et de restaurer le fonctionnement normal.

Vérifier, arrêter et démarrer les services DCS

  1. Répertoriez les packages RPM installés pour les services DCS.

    rpm -qa --last | egrep "dcs|mysql|zoo"

    Exemple :

    [root@test ~]$ rpm -qa --last | egrep "dcs|mysql|zoo"
dcs-agent-25.4.1.0.0_251008.0630-4.x86_64     Mon Nov 24 00:00:32 2025
dcs-admin-25.4.1.0.0_251008.0630-1.x86_64     Sat Nov 22 04:03:02 2025
mysql-8.0.44_el7-8.0.44.x86_64                Sat Nov 22 00:00:29 2025
zookeeper-3.9.3-1.x86_64                      Thu Feb 27 00:05:21 2025
dcs-cli-24.2.1.0.0_240524.1355-1.x86_64       Tue Jun  4 05:40:19 2024

  2. Vérifiez, arrêtez, démarrez et redémarrez le service d'agent DCS.

    1. Répertoriez le statut des services de pile DCS.

      systemctl --state=running|egrep -i "dcs|mysql|zoo|tfa"

      Exemple :

      [root@test ~]# systemctl --state=running|egrep -i "dcs|mysql|zoo|tfa"
initdcsadmin.service     loaded active running Oracle dcs-admin startup
initdcsagent.service     loaded active running Oracle dcs-agent startup
mysqld.service           loaded active running MySQL Server
oracle-tfa.service       loaded active running Oracle Trace File Analyzer

    2. Répertoriez tous les processus qui écoutent sur les ports désignés par DCS.

      sudo lsof -nP -iTCP -sTCP:LISTEN | grep -E ':(7060|7070|3306)\b'

      Exemple :

      [root@test ~]# sudo lsof -nP -iTCP -sTCP:LISTEN | grep -E ':(7060|7070|3306)\b'
java    63835   root  403u  IPv4 3563681668    0t0  TCP *:7070 (LISTEN)
mysqld  76121  mysql  120u  IPv4 1268462598    0t0  TCP 127.0.0.1:3306 (LISTEN)
java    76285   root  383u  IPv4 3563956774    0t0  TCP *:7060 (LISTEN)

    3. Vérifiez le statut de l'agent DCS à l'aide de dbcli.

      dbcli ping-agent

      Exemple :

      [root@test ~]# dbcli ping-agent
Agent is ready to serve the requests.

    4. Vérifiez, arrêtez, démarrez et redémarrez le service MySQL.

      systemctl status mysqld
systemctl stop mysqld
systemctl start mysqld
systemctl restart mysqld

      Exemple :

      [root@test ~]# systemctl status mysqld
mysqld.service - MySQL Server
   Loaded: loaded (/etc/systemd/system/mysqld.service; enabled; vendor preset: disabled)
   Active: active (running) since Sat 2025-11-22 00:00:37 UTC; 3 months 4 days ago
     Docs: man:mysqld(8)
           http://dev.mysql.com/doc/refman/en/using-systemd.html
 Main PID: 76121 (mysqld)
   Status: "Server is operational"
    Tasks: 36 (limit: 79998)
   Memory: 218.0M
   CGroup: /system.slice/mysqld.service
           76121 /opt/oracle/mysql_compact/mysql/bin/mysqld
                --defaults-file=/opt/oracle/mysql_compact/my.sim.cnf

Warning: Journal has been rotated since unit was started.
Log output is incomplete or unavailable.

[root@test ~]# systemctl stop mysqld
[root@test ~]# systemctl status mysqld
mysqld.service - MySQL Server
   Loaded: loaded (/etc/systemd/system/mysqld.service; enabled; vendor preset: disabled)
   Active: inactive (dead) since Thu 2026-02-26 01:22:51 UTC; 3s ago
     Docs: man:mysqld(8)
           http://dev.mysql.com/doc/refman/en/using-systemd.html
  Process: 76121 ExecStart=/opt/oracle/mysql_compact/mysql/bin/mysqld
                --defaults-file=/opt/oracle/mysql_compact/my.sim.cnf
                $MYSQLD_OPTS (code=exited, status=0/SUCCESS)
 Main PID: 76121 (code=exited, status=0/SUCCESS)
   Status: "Server shutdown complete"

Feb 26 01:22:47 test systemd[1]: Stopping MySQL Server...
Feb 26 01:22:51 test systemd[1]: mysqld.service: Succeeded.
Feb 26 01:22:51 test systemd[1]: Stopped MySQL Server.
Warning: Journal has been rotated since unit was started.
Log output is incomplete or unavailable.

[root@test ~]# systemctl start mysqld
[root@test ~]# systemctl status mysqld
mysqld.service - MySQL Server
   Loaded: loaded (/etc/systemd/system/mysqld.service; enabled; vendor preset: disabled)
   Active: active (running) since Thu 2026-02-26 01:23:02 UTC; 3s ago
     Docs: man:mysqld(8)
           http://dev.mysql.com/doc/refman/en/using-systemd.html
 Main PID: 86644 (mysqld)
   Status: "Server is operational"
    Tasks: 33 (limit: 79998)
   Memory: 111.7M
   CGroup: /system.slice/mysqld.service
           86644 /opt/oracle/mysql_compact/mysql/bin/mysqld
                --defaults-file=/opt/oracle/mysql_compact/my.sim.cnf

Feb 26 01:23:01 test systemd[1]: Starting MySQL Server...
Feb 26 01:23:02 test systemd[1]: Started MySQL Server.

[root@test ~]# systemctl restart mysqld
[root@test ~]# systemctl status mysqld
mysqld.service - MySQL Server
   Loaded: loaded (/etc/systemd/system/mysqld.service; enabled; vendor preset: disabled)
   Active: active (running) since Thu 2026-02-26 01:23:14 UTC; 2s ago
     Docs: man:mysqld(8)
           http://dev.mysql.com/doc/refman/en/using-systemd.html
 Main PID: 86821 (mysqld)
   Status: "Server is operational"
    Tasks: 33 (limit: 79998)
   Memory: 107.5M
   CGroup: /system.slice/mysqld.service
           86821 /opt/oracle/mysql_compact/mysql/bin/mysqld
                --defaults-file=/opt/oracle/mysql_compact/my.sim.cnf

Feb 26 01:23:13 test systemd[1]: Starting MySQL Server...
Feb 26 01:23:14 test systemd[1]: Started MySQL Server.

    5. Vérifiez, arrêtez, démarrez et redémarrez le service d'agent DCS.

      systemctl status initdcsagent
systemctl stop initdcsagent
systemctl start initdcsagent
systemctl restart initdcsagent

      Exemple :

      [root@test ~]# systemctl status initdcsagent
initdcsagent.service - Oracle dcs-agent startup
   Loaded: loaded (/etc/systemd/system/initdcsagent.service; enabled; vendor preset: disabled)
   Active: active (running) since Mon 2025-11-24 00:00:50 UTC; 3 months 2 days ago
 Main PID: 7956 (sh)
    Tasks: 1353 (limit: 79998)
   Memory: 21.5G
   CGroup: /system.slice/initdcsagent.service
           7956 /bin/sh -c . /opt/oracle/dcs/bin/setupJre.sh;
        $JAVA -Xms128m -Xmx512m -XX:MetaspaceSize=128m -XX:MaxMetaspaceSize=512m
        -XX:+HeapDumpOnOutOfMemoryError -XX:HeapDum>
           7958 /opt/oracle/dcs/java/dcs-agent/jdk-11.0.29/bin/java
        -Xms128m -Xmx512m -XX:MetaspaceSize=128m -XX:MaxMetaspaceSize=512m
        -XX:+HeapDumpOnOutOfMemoryError -XX:HeapDu>

Feb 25 18:30:02 test su[27582]: pam_unix(su:session): session closed for user oracle
Feb 25 18:30:03 test su[27690]: (to oracle) root on none
Feb 25 18:30:03 test su[27690]: pam_unix(su:session): session opened for user oracle by (uid=0)
Feb 25 18:30:03 test su[27690]: pam_unix(su:session): session closed for user oracle
Feb 25 18:30:03 test su[27694]: (to oracle) root on none
Feb 25 18:30:03 test su[27694]: pam_unix(su:session): session opened for user oracle by (uid=0)
Feb 25 18:30:03 test su[27694]: pam_unix(su:session): session closed for user oracle
Feb 25 18:30:03 test su[27752]: (to oracle) root on none
Feb 25 18:30:03 test su[27752]: pam_unix(su:session): session opened for user oracle by (uid=0)
Feb 25 18:30:04 test su[27752]: pam_unix(su:session): session closed for user oracle

[root@test ~]# systemctl stop initdcsagent
[root@test ~]# systemctl status initdcsagent
initdcsagent.service - Oracle dcs-agent startup
   Loaded: loaded (/etc/systemd/system/initdcsagent.service; enabled; vendor preset: disabled)
   Active: inactive (dead) since Wed 2026-02-25 19:09:22 UTC; 11s ago
  Process: 7956 ExecStart=/bin/sh -c . /opt/oracle/dcs/bin/setupJre.sh;
        $JAVA -Xms128m -Xmx512m -XX:MetaspaceSize=128m -XX:MaxMetaspaceSize=512m
        -XX:+HeapDumpOnOutOfMemoryError -XX>
 Main PID: 7956 (code=killed, signal=TERM)

Feb 25 19:05:10 test su[58800]: pam_unix(su:session): session closed for user grid
Feb 25 19:05:10 test su[58839]: (to grid) root on none
Feb 25 19:05:10 test su[58839]: pam_unix(su:session): session opened for user grid by (uid=0)
Feb 25 19:05:10 test su[58839]: pam_unix(su:session): session closed for user grid
Feb 25 19:05:15 test su[59381]: (to grid) root on none
Feb 25 19:05:15 test su[59381]: pam_unix(su:session): session opened for user grid by (uid=0)
Feb 25 19:05:15 test su[59381]: pam_unix(su:session): session closed for user grid
Feb 25 19:09:21 test systemd[1]: Stopping Oracle dcs-agent startup...
Feb 25 19:09:22 test systemd[1]: initdcsagent.service: Succeeded.
Feb 25 19:09:22 test systemd[1]: Stopped Oracle dcs-agent startup.

[root@test ~]# systemctl start initdcsagent
[root@test ~]# systemctl status initdcsagent
initdcsagent.service - Oracle dcs-agent startup
   Loaded: loaded (/etc/systemd/system/initdcsagent.service; enabled; vendor preset: disabled)
   Active: active (running) since Wed 2026-02-25 19:09:51 UTC; 4s ago
 Main PID: 62798 (sh)
    Tasks: 1268 (limit: 79998)
   Memory: 20.2G
   CGroup: /system.slice/initdcsagent.service
           62798 /bin/sh -c . /opt/oracle/dcs/bin/setupJre.sh;
        $JAVA -Xms128m -Xmx512m -XX:MetaspaceSize=128m -XX:MaxMetaspaceSize=512m
        -XX:+HeapDumpOnOutOfMemoryError -XX:HeapDu>
           62799 /opt/oracle/dcs/java/dcs-agent/jdk-11.0.29/bin/java
        -Xms128m -Xmx512m -XX:MetaspaceSize=128m -XX:MaxMetaspaceSize=512m
        -XX:+HeapDumpOnOutOfMemoryError -XX:HeapD>

Feb 25 19:09:51 test systemd[1]: Started Oracle dcs-agent startup.

[root@test ~]# systemctl restart initdcsagent
[root@test ~]# systemctl status initdcsagent
initdcsagent.service - Oracle dcs-agent startup
   Loaded: loaded (/etc/systemd/system/initdcsagent.service; enabled; vendor preset: disabled)
   Active: active (running) since Wed 2026-02-25 19:10:09 UTC; 11s ago
 Main PID: 63834 (sh)
    Tasks: 1192 (limit: 79998)
   Memory: 20.2G
   CGroup: /system.slice/initdcsagent.service
           63834 /bin/sh -c . /opt/oracle/dcs/bin/setupJre.sh;
        $JAVA -Xms128m -Xmx512m -XX:MetaspaceSize=128m -XX:MaxMetaspaceSize=512m
        -XX:+HeapDumpOnOutOfMemoryError -XX:HeapDu>
           63835 /opt/oracle/dcs/java/dcs-agent/jdk-11.0.29/bin/java -Xms128m -Xmx512m
        -XX:MetaspaceSize=128m -XX:MaxMetaspaceSize=512m
        -XX:+HeapDumpOnOutOfMemoryError -XX:HeapD>

Feb 25 19:10:16 test su[64523]: pam_unix(su:session): session closed for user oracle
Feb 25 19:10:17 test su[64648]: (to oracle) root on none
Feb 25 19:10:17 test su[64648]: pam_unix(su:session): session opened for user oracle by (uid=0)
Feb 25 19:10:17 test su[64648]: pam_unix(su:session): session closed for user oracle
Feb 25 19:10:17 test su[64652]: (to oracle) root on none
Feb 25 19:10:17 test su[64652]: pam_unix(su:session): session opened for user oracle by (uid=0)
Feb 25 19:10:17 test su[64652]: pam_unix(su:session): session closed for user oracle
Feb 25 19:10:17 test su[64865]: (to oracle) root on none
Feb 25 19:10:17 test su[64865]: pam_unix(su:session): session opened for user oracle by (uid=0)
Feb 25 19:10:18 test su[64865]: pam_unix(su:session): session closed for user oracle

    6. Vérifiez, arrêtez, démarrez et redémarrez le service d'administration DCS.

      systemctl status initdcsadmin
systemctl stop initdcsadmin
systemctl start initdcsadmin
systemctl restart initdcsadmin

      Exemple :

      [root@test ~]# systemctl status initdcsadmin
initdcsadmin.service - Oracle dcs-admin startup
   Loaded: loaded (/etc/systemd/system/initdcsadmin.service; enabled; vendor preset: disabled)
   Active: active (running) since Sat 2025-11-22 03:17:28 UTC; 3 months 4 days ago
 Main PID: 48268 (sh)
   Tasks: 313 (limit: 79998)
   Memory: 1.0G
   CGroup: /system.slice/initdcsadmin.service
           48268 /bin/sh -c . /opt/oracle/dcs/bin/setupAdminJre.sh;
        $JAVA -Xms128m -Xmx512m -XX:MetaspaceSize=128m -XX:MaxMetaspaceSize=512m
        -XX:+DisableExplicitGC -XX:ParallelGC>
           48269 /opt/oracle/dcs/java/dcs-admin/jdk-11.0.29/bin/java -Xms128m -Xmx512m
        -XX:MetaspaceSize=128m -XX:MaxMetaspaceSize=512m
        -XX:+DisableExplicitGC -XX:ParallelGCThre>

Feb 25 11:13:58 test su[50418]: (to mysql) root on none
Feb 25 11:13:58 test su[50418]: pam_unix(su:session): session opened for user mysql by (uid=0)
Feb 25 11:13:58 test su[50418]: pam_unix(su:session): session closed for user mysql
Feb 25 17:13:59 test su[62504]: (to mysql) root on none
Feb 25 17:13:59 test su[62504]: pam_unix(su:session): session opened for user mysql by (uid=0)
Feb 25 17:13:59 test su[62504]: pam_unix(su:session): session closed for user mysql
Warning: Journal has been rotated since unit was started. Log output is incomplete or unavailable.

[root@test ~]# systemctl stop initdcsadmin
[root@test ~]# systemctl status initdcsadmin
initdcsadmin.service - Oracle dcs-admin startup
 Loaded: loaded (/etc/systemd/system/initdcsadmin.service; enabled; vendor preset: disabled)
 Active: inactive (dead) since Wed 2026-02-25 19:21:44 UTC; 1s ago
 Process: 48268 ExecStart=/bin/sh -c . /opt/oracle/dcs/bin/setupAdminJre.sh;
    $JAVA -Xms128m -Xmx512m -XX:MetaspaceSize=128m -XX:MaxMetaspaceSize=512m
    -XX:+DisableExplicitGC -XX:Pa>
 Main PID: 48268 (code=killed, signal=TERM)

Feb 25 11:13:58 test su[50418]: (to mysql) root on none
Feb 25 11:13:58 test su[50418]: pam_unix(su:session): session opened for user mysql by (uid=0)
Feb 25 11:13:58 test su[50418]: pam_unix(su:session): session closed for user mysql
Feb 25 17:13:59 test su[62504]: (to mysql) root on none
Feb 25 17:13:59 test su[62504]: pam_unix(su:session): session opened for user mysql by (uid=0)
Feb 25 17:13:59 test su[62504]: pam_unix(su:session): session closed for user mysql
Feb 25 19:21:43 test systemd[1]: Stopping Oracle dcs-admin startup...
Feb 25 19:21:44 test systemd[1]: initdcsadmin.service: Succeeded.
Feb 25 19:21:44 test systemd[1]: Stopped Oracle dcs-admin startup.
Warning: Journal has been rotated since unit was started. Log output is incomplete or unavailable.

[root@test ~]# systemctl start initdcsadmin
[root@test ~]# systemctl status initdcsadmin
initdcsadmin.service - Oracle dcs-admin startup
   Loaded: loaded (/etc/systemd/system/initdcsadmin.service; enabled; vendor preset: disabled)
   Active: active (running) since Wed 2026-02-25 19:23:00 UTC; 2s ago
 Main PID: 75371 (sh)
    Tasks: 162 (limit: 79998)
   Memory: 226.0M
   CGroup: /system.slice/initdcsadmin.service
           75371 /bin/sh -c . /opt/oracle/dcs/bin/setupAdminJre.sh;
        $JAVA -Xms128m -Xmx512m -XX:MetaspaceSize=128m -XX:MaxMetaspaceSize=512m
        -XX:+DisableExplicitGC -XX:ParallelGC>
           75372 /opt/oracle/dcs/java/dcs-admin/jdk-11.0.29/bin/java -Xms128m -Xmx512m
        -XX:MetaspaceSize=128m -XX:MaxMetaspaceSize=512m
        -XX:+DisableExplicitGC -XX:ParallelGCThre>

Feb 25 19:23:00 test systemd[1]: Started Oracle dcs-admin startup.

[root@test ~]# systemctl restart  initdcsadmin
[root@test ~]# systemctl status initdcsadmin
initdcsadmin.service - Oracle dcs-admin startup
   Loaded: loaded (/etc/systemd/system/initdcsadmin.service; enabled; vendor preset: disabled)
   Active: active (running) since Wed 2026-02-25 19:24:06 UTC; 2s ago
 Main PID: 76284 (sh)
    Tasks: 161 (limit: 79998)
   Memory: 226.9M
   CGroup: /system.slice/initdcsadmin.service
           76284 /bin/sh -c . /opt/oracle/dcs/bin/setupAdminJre.sh;
        $JAVA -Xms128m -Xmx512m -XX:MetaspaceSize=128m -XX:MaxMetaspaceSize=512m
        -XX:+DisableExplicitGC -XX:ParallelGC>
           76285 /opt/oracle/dcs/java/dcs-admin/jdk-11.0.29/bin/java -Xms128m -Xmx512m
        -XX:MetaspaceSize=128m -XX:MaxMetaspaceSize=512m
        -XX:+DisableExplicitGC -XX:ParallelGCThre>

Feb 25 19:24:06 test systemd[1]: Started Oracle dcs-admin startup.

    7. Vérifiez, arrêtez, démarrez et redémarrez le service ZooKeeper.

      /opt/zookeeper/bin/zkServer.sh status
/opt/zookeeper/bin/zkServer.sh stop
/opt/zookeeper/bin/zkServer.sh start

      Exemple :

      [root@test ~]# /opt/zookeeper/bin/zkServer.sh status
ZooKeeper JMX enabled by default
Using config: /opt/zookeeper/bin/../conf/zoo.cfg
Mode: follower

[root@test ~]# /opt/zookeeper/bin/zkServer.sh stop
ZooKeeper JMX enabled by default
Using config: /opt/zookeeper/bin/../conf/zoo.cfg
Stopping zookeeper ... STOPPED

[root@test ~]# /opt/zookeeper/bin/zkServer.sh status
ZooKeeper JMX enabled by default
Using config: /opt/zookeeper/bin/../conf/zoo.cfg
Error contacting service. It is probably not running.

[root@test ~]# /opt/zookeeper/bin/zkServer.sh start
ZooKeeper JMX enabled by default
Using config: /opt/zookeeper/bin/../conf/zoo.cfg
Starting zookeeper ... STARTED

[root@test ~]# /opt/zookeeper/bin/zkServer.sh status
ZooKeeper JMX enabled by default
Using config: /opt/zookeeper/bin/../conf/zoo.cfg
Mode: follower

Afficher les détails du système de base de donnée

  1. Afficher les détails du système de base de donnée.

    /opt/oracle/dcs/bin/dbcli describe-system -d

    Exemple :

    [root@test ~]# /opt/oracle/dcs/bin/dbcli describe-system -d

DbSystem Information
----------------------------------------------------------------
                     ID: 444b444e-c4c4-4fd4-44er-4444ag44444
               Platform: Vmdb
        Data Disk Count: 12
         CPU Core Count: 32
                Created: September 28, 2025 at 9:05:22 PM UTC

System Information
----------------------------------------------------------------
                   Name: test1te
            Domain Name: testpublicsu.testvcn.oraclevcn.com
              Time Zone: UTC
             DB Edition: EeHp
            DNS Servers:
            NTP Servers: 100.200.100.200

Disk Group Information
----------------------------------------------------------------
DG Name                   Redundancy                Percentage
------------------------- ------------------------- ------------
Data                      External                  100
Reco                      External                  100

DcsCli Details
----------------------------------------------------------------
                Version:
            BuildNumber: 2.0.16
              GitNumber:
              BuildTime:

DcsAgent Details
----------------------------------------------------------------
                Version: 25.4.1.0.0-SNAPSHOT
            BuildNumber: 4
              GitNumber: f2f63fd7ra9bf53a
              BuildTime:

DcsAdmin Details
----------------------------------------------------------------
                Version: 25.4.1.0.0-SNAPSHOT
            BuildNumber: 25.4.1.0.0-SNAPSHOT_4
              GitNumber: f2f6edac4a9bf53a
              BuildTime:

Remarque :