Ceph：Unknown lvalue 'TasksMax' in section 'Service
1、查看ceph服务状态# systemctl status ceph\*.service
● ceph-osd@0.service - Ceph object storage daemon
Loaded: loaded (/usr/lib/systemd/system/ceph-osd@.service; enabled; vendor preset: disabled)
Active: active (running) since Fri 2018-01-12 06:03:20 CST; 7h ago
Main PID: 4686 (ceph-osd)
CGroup: /system.slice/system-ceph\x2dosd.slice/ceph-osd@0.service
└─4686 /usr/bin/ceph-osd -f --cluster ceph --id 0 --setuser ceph --setgroup ceph
Jan 12 06:03:20 hz-01-ops-tc-ceph-01 ceph-osd: starting osd.0 at :/0 osd_data /var/lib/ceph/osd/ceph-0 /var/lib/ceph/osd/ceph-0/journal
Jan 12 06:03:20 hz-01-ops-tc-ceph-01 ceph-osd: 2018-01-12 06:03:20.610107 7f6b4111b800 -1 osd.0 0 log_to_monitors {default=true}
Jan 12 06:03:20 hz-01-ops-tc-ceph-01 systemd: Unknown lvalue 'TasksMax' in section 'Service'
Jan 12 06:03:21 hz-01-ops-tc-ceph-01 systemd: Unknown lvalue 'TasksMax' in section 'Service'
Jan 12 06:03:21 hz-01-ops-tc-ceph-01 systemd: Unknown lvalue 'TasksMax' in section 'Service'
Jan 12 13:53:07 hz-01-ops-tc-ceph-01 systemd: Unknown lvalue 'TasksMax' in section 'Service'
Jan 12 13:53:07 hz-01-ops-tc-ceph-01 systemd: Unknown lvalue 'TasksMax' in section 'Service'
Jan 12 13:53:07 hz-01-ops-tc-ceph-01 systemd: Unknown lvalue 'TasksMax' in section 'Service'
Jan 12 13:53:07 hz-01-ops-tc-ceph-01 systemd: Unknown lvalue 'TasksMax' in section 'Service'
Jan 12 13:53:07 hz-01-ops-tc-ceph-01 systemd: Unknown lvalue 'TasksMax' in section 'Service' 2、解决方法：
# sudo yum install systemd-*
# systemctl status ceph\*.service
● ceph-osd@0.service - Ceph object storage daemon
Loaded: loaded (/usr/lib/systemd/system/ceph-osd@.service; enabled; vendor preset: disabled)
Active: active (running) since Fri 2018-01-12 06:03:20 CST; 7h ago
Main PID: 4686 (ceph-osd)
CGroup: /system.slice/system-ceph\x2dosd.slice/ceph-osd@0.service
└─4686 /usr/bin/ceph-osd -f --cluster ceph --id 0 --setuser ceph --setgroup ceph
Jan 12 06:03:20 hz-01-ops-tc-ceph-01 ceph-osd: starting osd.0 at :/0 osd_data /var/lib/ceph/osd/ceph-0 /var/lib/ceph/osd/ceph-0/journal
Jan 12 06:03:20 hz-01-ops-tc-ceph-01 ceph-osd: 2018-01-12 06:03:20.610107 7f6b4111b800 -1 osd.0 0 log_to_monitors {default=true}
Jan 12 06:03:20 hz-01-ops-tc-ceph-01 systemd: Unknown lvalue 'TasksMax' in section 'Service'
Jan 12 06:03:21 hz-01-ops-tc-ceph-01 systemd: Unknown lvalue 'TasksMax' in section 'Service'
Jan 12 06:03:21 hz-01-ops-tc-ceph-01 systemd: Unknown lvalue 'TasksMax' in section 'Service'
Jan 12 13:53:07 hz-01-ops-tc-ceph-01 systemd: Unknown lvalue 'TasksMax' in section 'Service'
Jan 12 13:53:07 hz-01-ops-tc-ceph-01 systemd: Unknown lvalue 'TasksMax' in section 'Service'
Jan 12 13:53:07 hz-01-ops-tc-ceph-01 systemd: Unknown lvalue 'TasksMax' in section 'Service'
Jan 12 13:53:07 hz-01-ops-tc-ceph-01 systemd: Unknown lvalue 'TasksMax' in section 'Service'
Jan 12 13:53:07 hz-01-ops-tc-ceph-01 systemd: Unknown lvalue 'TasksMax' in section 'Service' 3、服务验证：
# systemctl restart ceph\*.service
# systemctl status ceph\*.service
● ceph-osd@0.service - Ceph object storage daemon
Loaded: loaded (/usr/lib/systemd/system/ceph-osd@.service; enabled; vendor preset: disabled)
Active: active (running) since Fri 2018-01-12 13:56:14 CST; 2s ago
Process: 14682 ExecStartPre=/usr/lib/ceph/ceph-osd-prestart.sh --cluster ${CLUSTER} --id %i (code=exited, status=0/SUCCESS)
Main PID: 14733 (ceph-osd)
CGroup: /system.slice/system-ceph\x2dosd.slice/ceph-osd@0.service
└─14733 /usr/bin/ceph-osd -f --cluster ceph --id 0 --setuser ceph --setgroup ceph
Jan 12 13:56:14 hz-01-ops-tc-ceph-01 systemd: Starting Ceph object storage daemon...
Jan 12 13:56:14 hz-01-ops-tc-ceph-01 ceph-osd-prestart.sh: create-or-move updated item name 'osd.0' weight 0.0439 at location {host=hz-01-ops-tc-ceph-01,root=default} to crush map
Jan 12 13:56:14 hz-01-ops-tc-ceph-01 systemd: Started Ceph object storage daemon.
Jan 12 13:56:14 hz-01-ops-tc-ceph-01 ceph-osd: starting osd.0 at :/0 osd_data /var/lib/ceph/osd/ceph-0 /var/lib/ceph/osd/ceph-0/journal
Jan 12 13:56:14 hz-01-ops-tc-ceph-01 ceph-osd: 2018-01-12 13:56:14.620901 7f0aee7fb800 -1 osd.0 19 log_to_monitors {default=true}
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