root@ob log# cat /etc/security/limits.conf
* soft nofile 655350
* hard nofile 655350
* soft nproc 163840
* hard nproc 163840
* soft stack 102400
* hard stack 327680
* hard memlock unlimited
* soft memlock unlimited
root@ob log# free -g
total used free shared buff/cache available
Mem: 62 6 50 0 6 56
Swap: 31 0 31
root@ob log# free -g
total used free shared buff/cache available
Mem: 62 6 50 0 6 56
Swap: 31 0 31
root@ob log# free -g
total used free shared buff/cache available
Mem: 62 6 50 0 6 56
Swap: 31 0 31
root@ob log# ls -lt
total 9664
-rw-r--r--. 1 root root 0 Apr 11 11:12 observer.log
-rw-r--r--. 1 root root 4587795 Apr 11 11:11 rootservice.log
-rw-r--r--. 1 root root 920692 Apr 11 11:11 election.log
-rw-r--r--. 1 root root 335550 Apr 11 11:11 trace.log
drwxr-xr-x. 2 root root 31 Apr 11 11:07 alert
-rw-r--r--. 1 root root 0 Apr 11 11:07 election.log.wf
-rw-r--r--. 1 root root 0 Apr 11 11:07 observer.log.wf
-rw-r--r--. 1 root root 0 Apr 11 11:07 rootservice.log.wf
root@ob log# obclient -h192.168.207.18 -P2881 -uroot@sys -p'linux2025.' -Doceanbase -A
Welcome to the OceanBase. Commands end with ; or \g.
Your OceanBase connection id is 3221569599
Server version: OceanBase 4.2.5.3 (r103000152025033110-f5b88cd987f23383677f2eb53cf76ed38a48979b) (Built Mar 31 2025 11:08:20)
Copyright (c) 2000, 2018, OceanBase and/or its affiliates. All rights reserved.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
obclient(root@sys)oceanbase> SHOW PARAMETERS LIKE 'use_large_pages';
+-------+----------+----------------+----------+-----------------+-----------+-------+-----------------------------------------------------------------------------+----------+---------+---------+------------------+---------------+-----------+
| zone | svr_type | svr_ip | svr_port | name | data_type | value | info | section | scope | source | edit_level | default_value | isdefault |
+-------+----------+----------------+----------+-----------------+-----------+-------+-----------------------------------------------------------------------------+----------+---------+---------+------------------+---------------+-----------+
| zone1 | observer | 192.168.207.18 | 2882 | use_large_pages | NULL | false | used to manage the database's use of large pages, values: false, true, only | OBSERVER | CLUSTER | DEFAULT | STATIC_EFFECTIVE | false | 1 |
+-------+----------+----------------+----------+-----------------+-----------+-------+-----------------------------------------------------------------------------+----------+---------+---------+------------------+---------------+-----------+
1 row in set (0.021 sec)
obclient(root@sys)oceanbase> exit
Bye
root@ob log# grep HugePages /proc/meminfo
AnonHugePages: 3422208 kB
HugePages_Total: 0
HugePages_Free: 0
HugePages_Rsvd: 0
HugePages_Surp: 0
关闭透明大页：
root@ob log# echo never > /sys/kernel/mm/transparent_hugepage/enabled
root@ob log# obclient -h192.168.207.18 -P2881 -uroot@sys -p'linux2025.' -Doceanbase -A
Welcome to the OceanBase. Commands end with ; or \g.
Your OceanBase connection id is 3221589983
Server version: OceanBase 4.2.5.3 (r103000152025033110-f5b88cd987f23383677f2eb53cf76ed38a48979b) (Built Mar 31 2025 11:08:20)
Copyright (c) 2000, 2018, OceanBase and/or its affiliates. All rights reserved.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
obclient(root@sys)oceanbase> -- 查看当前生效的总内存限制
Query OK, 0 rows affected (0.001 sec)
obclient(root@sys)oceanbase> SELECT name, value AS memory_limit_GB FROM oceanbase.__all_virtual_sys_parameter_stat WHERE name IN ('memory_limit', 'memory_limit_percentage');
+-------------------------+-----------------+
| name | memory_limit_GB |
+-------------------------+-----------------+
| memory_limit_percentage | 80 |
| memory_limit | 48G |
+-------------------------+-----------------+
2 rows in set (0.004 sec)
obclient(root@sys)oceanbase> SHOW PARAMETERS LIKE 'memory_limit%';
+-------+----------+----------------+----------+-------------------------+-----------+-------+---------------------------------------------------------------------------------------------------------------------------------+----------+---------+---------+-------------------+---------------+-----------+
| zone | svr_type | svr_ip | svr_port | name | data_type | value | info | section | scope | source | edit_level | default_value | isdefault |
+-------+----------+----------------+----------+-------------------------+-----------+-------+---------------------------------------------------------------------------------------------------------------------------------+----------+---------+---------+-------------------+---------------+-----------+
| zone1 | observer | 192.168.207.18 | 2882 | memory_limit_percentage | NULL | 80 | the size of the memory reserved for internal use(for testing purpose). Range: 10, 95 | OBSERVER | CLUSTER | DEFAULT | DYNAMIC_EFFECTIVE | 80 | 1 |
| zone1 | observer | 192.168.207.18 | 2882 | memory_limit | NULL | 48G | the size of the memory reserved for internal use(for testing purpose), 0 means follow memory_limit_percentage. Range: 0, [1G,). | OBSERVER | CLUSTER | DEFAULT | DYNAMIC_EFFECTIVE | 0M | 0 |
+-------+----------+----------------+----------+-------------------------+-----------+-------+---------------------------------------------------------------------------------------------------------------------------------+----------+---------+---------+-------------------+---------------+-----------+
2 rows in set (0.012 sec)
obclient(root@sys)oceanbase> SHOW PARAMETERS LIKE 'memory%';
+-------+----------+----------------+----------+-------------------------+-----------+-------+---------------------------------------------------------------------------------------------------------------------------------+----------+---------+---------+-------------------+---------------+-----------+
| zone | svr_type | svr_ip | svr_port | name | data_type | value | info | section | scope | source | edit_level | default_value | isdefault |
+-------+----------+----------------+----------+-------------------------+-----------+-------+---------------------------------------------------------------------------------------------------------------------------------+----------+---------+---------+-------------------+---------------+-----------+
| zone1 | observer | 192.168.207.18 | 2882 | memory_chunk_cache_size | NULL | 0M | the maximum size of memory cached by memory chunk cache. Range: 0M,, 0 stands for adaptive | OBSERVER | CLUSTER | DEFAULT | DYNAMIC_EFFECTIVE | 0M | 1 |
| zone1 | observer | 192.168.207.18 | 2882 | memory_limit_percentage | NULL | 80 | the size of the memory reserved for internal use(for testing purpose). Range: 10, 95 | OBSERVER | CLUSTER | DEFAULT | DYNAMIC_EFFECTIVE | 80 | 1 |
| zone1 | observer | 192.168.207.18 | 2882 | memory_limit | NULL | 48G | the size of the memory reserved for internal use(for testing purpose), 0 means follow memory_limit_percentage. Range: 0, [1G,). | OBSERVER | CLUSTER | DEFAULT | DYNAMIC_EFFECTIVE | 0M | 0 |
| zone1 | observer | 192.168.207.18 | 2882 | memory_reserved | NULL | 500M | the size of the system memory reserved for emergency internal use. Range: 10M, total size of memory | SSTABLE | CLUSTER | DEFAULT | DYNAMIC_EFFECTIVE | 500M | 1 |
+-------+----------+----------------+----------+-------------------------+-----------+-------+---------------------------------------------------------------------------------------------------------------------------------+----------+---------+---------+-------------------+---------------+-----------+
4 rows in set (0.013 sec)
obclient(root@sys)oceanbase> exit
Bye
内存大页的值等于memory_limt即可：
root@ob log# echo "vm.nr_hugepages = 24576" >> /etc/sysctl.conf
root@ob log# sysctl -p
fs.aio-max-nr = 1048576
vm.max_map_count = 655360
fs.file-max = 6573688
vm.nr_hugepages = 24576
root@ob log# free -g
total used free shared buff/cache available
Mem: 62 54 2 0 6 8
Swap: 31 0 31
root@ob log# obclient -h192.168.207.18 -P2881 -uroot@sys -p'linux2025.' -Doceanbase -A
Welcome to the OceanBase. Commands end with ; or \g.
Your OceanBase connection id is 3221600322
Server version: OceanBase 4.2.5.3 (r103000152025033110-f5b88cd987f23383677f2eb53cf76ed38a48979b) (Built Mar 31 2025 11:08:20)
Copyright (c) 2000, 2018, OceanBase and/or its affiliates. All rights reserved.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
obclient(root@sys)oceanbase> ALTER SYSTEM SET use_large_pages = "true";
Query OK, 0 rows affected (0.011 sec)
obclient(root@sys)oceanbase> SHOW PARAMETERS LIKE 'use_large_pages';
+-------+----------+----------------+----------+-----------------+-----------+-------+-----------------------------------------------------------------------------+----------+---------+---------+------------------+---------------+-----------+
| zone | svr_type | svr_ip | svr_port | name | data_type | value | info | section | scope | source | edit_level | default_value | isdefault |
+-------+----------+----------------+----------+-----------------+-----------+-------+-----------------------------------------------------------------------------+----------+---------+---------+------------------+---------------+-----------+
| zone1 | observer | 192.168.207.18 | 2882 | use_large_pages | NULL | false | used to manage the database's use of large pages, values: false, true, only | OBSERVER | CLUSTER | DEFAULT | STATIC_EFFECTIVE | false | 1 |
+-------+----------+----------------+----------+-----------------+-----------+-------+-----------------------------------------------------------------------------+----------+---------+---------+------------------+---------------+-----------+
1 row in set (0.014 sec)
obclient(root@sys)oceanbase> exit
Bye
root@ob log# grep HugePages_ /proc/meminfo
HugePages_Total: 24576
HugePages_Free: 24576
HugePages_Rsvd: 0
HugePages_Surp: 0
root@ob log# obclient -h192.168.207.18 -P2881 -uroot@sys -p'linux2025.' -Doceanbase -A
Welcome to the OceanBase. Commands end with ; or \g.
Your OceanBase connection id is 3221604425
Server version: OceanBase 4.2.5.3 (r103000152025033110-f5b88cd987f23383677f2eb53cf76ed38a48979b) (Built Mar 31 2025 11:08:20)
Copyright (c) 2000, 2018, OceanBase and/or its affiliates. All rights reserved.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
obclient(root@sys)oceanbase> ALTER SYSTEM SET use_large_pages = 'true';
Query OK, 0 rows affected (0.015 sec)
obclient(root@sys)oceanbase> SHOW PARAMETERS LIKE 'use_large_pages';
+-------+----------+----------------+----------+-----------------+-----------+-------+-----------------------------------------------------------------------------+----------+---------+---------+------------------+---------------+-----------+
| zone | svr_type | svr_ip | svr_port | name | data_type | value | info | section | scope | source | edit_level | default_value | isdefault |
+-------+----------+----------------+----------+-----------------+-----------+-------+-----------------------------------------------------------------------------+----------+---------+---------+------------------+---------------+-----------+
| zone1 | observer | 192.168.207.18 | 2882 | use_large_pages | NULL | false | used to manage the database's use of large pages, values: false, true, only | OBSERVER | CLUSTER | DEFAULT | STATIC_EFFECTIVE | false | 1 |
+-------+----------+----------------+----------+-----------------+-----------+-------+-----------------------------------------------------------------------------+----------+---------+---------+------------------+---------------+-----------+
1 row in set (0.014 sec)
obclient(root@sys)oceanbase> exit
Bye
重启集群生效：
root@ob log# obd cluster restart lnob
Get local repositories and plugins ok
Load cluster param plugin ok
Open ssh connection ok
Cluster status check ok
Connect to observer 192.168.207.18:2881 ok
Server check ok
Check before start obagent ok
Connect to Obagent ok
Check before start prometheus ok
Connect to Prometheus ok
Check before start grafana ok
Stop observer ok
Stop obshell ok
cluster scenario: None
Start observer ok
observer program health check ok
obshell start ok
obshell program health check ok
Connect to observer 192.168.207.18:2881 ok
Wait for observer init ok
+--------------------------------------------------+
| oceanbase-standalone |
+----------------+---------+------+-------+--------+
| ip | version | port | zone | status |
+----------------+---------+------+-------+--------+
| 192.168.207.18 | 4.2.5.3 | 2881 | zone1 | ACTIVE |
+----------------+---------+------+-------+--------+
obclient -h192.168.207.18 -P2881 -uroot@sys -p'******' -Doceanbase -A
cluster unique id: 3401ae25-58c4-5b35-8eb3-c88c207ad7e8-1961de3d3c0-03050204
Stop obagent ok
Start obagent ok
obagent program health check ok
Connect to Obagent ok
+-------------------------------------------------------------------+
| obagent |
+----------------+--------------------+--------------------+--------+
| ip | mgragent_http_port | monagent_http_port | status |
+----------------+--------------------+--------------------+--------+
| 192.168.207.18 | 8089 | 8088 | active |
+----------------+--------------------+--------------------+--------+
Stop prometheus ok
Start promethues ok
prometheus program health check ok
Connect to Prometheus ok
+--------------------------------------------------------+
| prometheus |
+----------------------------+-------+----------+--------+
| url | user | password | status |
+----------------------------+-------+----------+--------+
| http://192.168.207.18:9090 | admin | ****** | active |
+----------------------------+-------+----------+--------+
Stop grafana ok
Start grafana ok
grafana program health check ok
Connect to grafana ok
+--------------------------------------------------------------------+
| grafana |
+----------------------------------------+-------+----------+--------+
| url | user | password | status |
+----------------------------------------+-------+----------+--------+
| http://192.168.207.18:3000/d/oceanbase | admin | ****** | active |
+----------------------------------------+-------+----------+--------+
lnob restart
Trace ID: 9c9222cc-1684-11f0-9f75-0050569f2a5c
If you want to view detailed obd logs, please run: obd display-trace 9c9222cc-1684-11f0-9f75-0050569f2a5c
root@ob log# ls -lt
total 98996
-rw-r--r--. 1 root root 95002132 Apr 11 11:25 observer.log
-rw-r--r--. 1 root root 1057321 Apr 11 11:25 election.log
-rw-r--r--. 1 root root 4971754 Apr 11 11:25 rootservice.log
-rw-r--r--. 1 root root 335550 Apr 11 11:11 trace.log
drwxr-xr-x. 2 root root 31 Apr 11 11:07 alert
-rw-r--r--. 1 root root 0 Apr 11 11:07 election.log.wf
-rw-r--r--. 1 root root 0 Apr 11 11:07 observer.log.wf
-rw-r--r--. 1 root root 0 Apr 11 11:07 rootservice.log.wf
root@ob log# ls -lt
total 98996
-rw-r--r--. 1 root root 95002132 Apr 11 11:25 observer.log
-rw-r--r--. 1 root root 1057321 Apr 11 11:25 election.log
-rw-r--r--. 1 root root 4971754 Apr 11 11:25 rootservice.log
-rw-r--r--. 1 root root 335550 Apr 11 11:11 trace.log
drwxr-xr-x. 2 root root 31 Apr 11 11:07 alert
-rw-r--r--. 1 root root 0 Apr 11 11:07 election.log.wf
-rw-r--r--. 1 root root 0 Apr 11 11:07 observer.log.wf
-rw-r--r--. 1 root root 0 Apr 11 11:07 rootservice.log.wf
root@ob log# ls -lt
total 98996
-rw-r--r--. 1 root root 95002132 Apr 11 11:25 observer.log
-rw-r--r--. 1 root root 1057321 Apr 11 11:25 election.log
-rw-r--r--. 1 root root 4971754 Apr 11 11:25 rootservice.log
-rw-r--r--. 1 root root 335550 Apr 11 11:11 trace.log
drwxr-xr-x. 2 root root 31 Apr 11 11:07 alert
-rw-r--r--. 1 root root 0 Apr 11 11:07 election.log.wf
-rw-r--r--. 1 root root 0 Apr 11 11:07 observer.log.wf
-rw-r--r--. 1 root root 0 Apr 11 11:07 rootservice.log.wf
root@ob log# du -sm observer.log
91 observer.log
root@ob log# tail -f observer.log
2025-04-11 11:25:52.915576 WDIAG PALF reconfirm (log_reconfirm.cpp:608) 13037T1003_LogLoopT1003Y0-0000000000000000-0-0 lt=6errcode=-4023 wait start work log majority or log slide(palf_id=1, new_proposal_id_=3, majority_max_log_server_="192.168.207.18:2882", majority_max_lsn_={lsn:806397391}, majority_max_accept_pid_=2)
2025-04-11 11:25:52.915584 INFO PALF reconfirm (log_reconfirm.cpp:628) 13037T1003_LogLoopT1003Y0-0000000000000000-0-0 lt=7 reconfirm waiting retry(ret=-4023, palf_id=1, state=6)
2025-04-11 11:25:52.915604 INFO PALF switch_state (log_state_mgr.cpp:333) 13037T1003_LogLoopT1003Y0-0000000000000000-0-0 lt=18 switch_state(ret=-4023, palf_id=1, old_role=1, role=1, old_state=3, state=3, old_leader="192.168.207.18:2882", leader="192.168.207.18:2882", old_leader_epoch=1, leader_epoch=1, need_next_loop=false, diff=867)
2025-04-11 11:25:52.915945 INFO PALF inner_pread_ (log_storage.cpp:995) 13522T1003_ReplaySrvT1003Y0-0000000000000000-0-0 lt=72 PALF STAT READ LOG INFO FROM DISK(this={log_tail:{lsn:806397391}, readable_log_tail:{lsn:806397391}, log_block_header:{magic:18754, version:1, min_lsn:{lsn:18446744073709551615}, min_scn:{val:18446744073709551615, v:3}, curr_block_id:12, palf_id:1}, block_mgr:{log_dir:"/data/1/lnob/clog/tenant_1003/1/log", min_block_id:0, max_block_id:13, curr_writable_block_id:12, palf_id:1}, logical_block_size_:67104768, curr_block_writable_size_:65964593, block_header_serialize_buf_:0x2aaae3617ab8, flashback_version:0}, accum_read_io_count=138, accum_read_log_size=474594366, avg_pread_cost=4623)
2025-04-11 11:25:53.886627 INFO SERVER check_user_tenant_schema_refreshed (ob_server.cpp:3133) 12436observerT0YB42C0A8CF12-000632784179D9B2-0-0 lt=57 server_start 14/18 observer check user tenant schema refreshed begin.
2025-04-11 11:25:56.886934 INFO SERVER check_user_tenant_schema_refreshed (ob_server.cpp:3173) 12436observerT0YB42C0A8CF12-000632784179D9B2-0-0 lt=35 server_start 15/18 observer check user tenant schema refreshed finish.
2025-04-11 11:25:56.886945 INFO SERVER check_log_replay_over (ob_server.cpp:3180) 12436observerT0YB42C0A8CF12-000632784179D9B2-0-0 lt=5 server_start 16/18 observer check log replay over begin.
2025-04-11 11:25:56.886983 INFO SERVER check_log_replay_over (ob_server.cpp:3206) 12436observerT0YB42C0A8CF12-000632784179D9B2-0-0 lt=4 server_start 17/18 observer check log replay over finish.
2025-04-11 11:25:56.933227 INFO SERVER start (ob_server.cpp:1236) 12436observerT0YB42C0A8CF12-000632784179D9B2-0-0 lt=22 server_start 18/18 observer start success.
2025-04-11 11:25:56.933246 INFO SERVER wait (ob_server.cpp:1633) 12436observerT0YB42C0A8CF12-000632784179D9B2-0-0 lt=8 observer process wait begin.
^C
root@ob log# obclient -h192.168.207.18 -P2881 -uroot@sys -p'linux2025.' -Doceanbase -A
Welcome to the OceanBase. Commands end with ; or \g.
Your OceanBase connection id is 3221651007
Server version: OceanBase 4.2.5.3 (r103000152025033110-f5b88cd987f23383677f2eb53cf76ed38a48979b) (Built Mar 31 2025 11:08:20)
Copyright (c) 2000, 2018, OceanBase and/or its affiliates. All rights reserved.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
obclient(root@sys)oceanbase> SHOW PARAMETERS LIKE 'use_large_pages';
+-------+----------+----------------+----------+-----------------+-----------+-------+-----------------------------------------------------------------------------+----------+---------+---------+------------------+---------------+-----------+
| zone | svr_type | svr_ip | svr_port | name | data_type | value | info | section | scope | source | edit_level | default_value | isdefault |
+-------+----------+----------------+----------+-----------------+-----------+-------+-----------------------------------------------------------------------------+----------+---------+---------+------------------+---------------+-----------+
| zone1 | observer | 192.168.207.18 | 2882 | use_large_pages | NULL | true | used to manage the database's use of large pages, values: false, true, only | OBSERVER | CLUSTER | DEFAULT | STATIC_EFFECTIVE | false | 0 |
+-------+----------+----------------+----------+-----------------+-----------+-------+-----------------------------------------------------------------------------+----------+---------+---------+------------------+---------------+-----------+
1 row in set (0.048 sec)
obclient(root@sys)oceanbase> exit
Bye
root@ob log# free -g
total used free shared buff/cache available
Mem: 62 50 5 0 6 11
Swap: 31 0 31
root@ob log# cat /proc/meminfo|grep Huge
AnonHugePages: 53248 kB
HugePages_Total: 24576
HugePages_Free: 23055
HugePages_Rsvd: 11
HugePages_Surp: 0
Hugepagesize: 2048 kB
root@ob log# cat /sys/kernel/mm/transparent_hugepage/enabled
always madvise never
root@ob log# cat /etc/redhat-release
CentOS Linux release 7.9.2009 (Core)
root@ob log# pwd
/root/lnob/oceanbase/log
root@ob log# ls -lt
total 98996
-rw-r--r--. 1 root root 95002132 Apr 11 11:25 observer.log
-rw-r--r--. 1 root root 1057321 Apr 11 11:25 election.log
-rw-r--r--. 1 root root 4971754 Apr 11 11:25 rootservice.log
-rw-r--r--. 1 root root 335550 Apr 11 11:11 trace.log
drwxr-xr-x. 2 root root 31 Apr 11 11:07 alert
-rw-r--r--. 1 root root 0 Apr 11 11:07 election.log.wf
-rw-r--r--. 1 root root 0 Apr 11 11:07 observer.log.wf
-rw-r--r--. 1 root root 0 Apr 11 11:07 rootservice.log.wf
root@ob log# ls -lt
total 98996
-rw-r--r--. 1 root root 95002132 Apr 11 11:25 observer.log
-rw-r--r--. 1 root root 1057321 Apr 11 11:25 election.log
-rw-r--r--. 1 root root 4971754 Apr 11 11:25 rootservice.log
-rw-r--r--. 1 root root 335550 Apr 11 11:11 trace.log
drwxr-xr-x. 2 root root 31 Apr 11 11:07 alert
-rw-r--r--. 1 root root 0 Apr 11 11:07 election.log.wf
-rw-r--r--. 1 root root 0 Apr 11 11:07 observer.log.wf
-rw-r--r--. 1 root root 0 Apr 11 11:07 rootservice.log.wf
root@ob log# >|observer.log
root@ob log# ls -lt
total 6220
-rw-r--r--. 1 root root 0 Apr 11 11:54 observer.log
-rw-r--r--. 1 root root 1057321 Apr 11 11:25 election.log
-rw-r--r--. 1 root root 4971754 Apr 11 11:25 rootservice.log
-rw-r--r--. 1 root root 335550 Apr 11 11:11 trace.log
drwxr-xr-x. 2 root root 31 Apr 11 11:07 alert
-rw-r--r--. 1 root root 0 Apr 11 11:07 election.log.wf
-rw-r--r--. 1 root root 0 Apr 11 11:07 observer.log.wf
-rw-r--r--. 1 root root 0 Apr 11 11:07 rootservice.log.wf
root@ob log#
root@ob log#
root@ob log# ls -lt
total 6220
-rw-r--r--. 1 root root 0 Apr 11 11:54 observer.log
-rw-r--r--. 1 root root 1057321 Apr 11 11:25 election.log
-rw-r--r--. 1 root root 4971754 Apr 11 11:25 rootservice.log
-rw-r--r--. 1 root root 335550 Apr 11 11:11 trace.log
drwxr-xr-x. 2 root root 31 Apr 11 11:07 alert
-rw-r--r--. 1 root root 0 Apr 11 11:07 election.log.wf
-rw-r--r--. 1 root root 0 Apr 11 11:07 observer.log.wf
-rw-r--r--. 1 root root 0 Apr 11 11:07 rootservice.log.wf
root@ob log#