1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
|
=====================
Operating a Cluster
=====================
.. index:: systemd; operating a cluster
Running Ceph with systemd
==========================
For all distributions that support systemd (CentOS 7, Fedora, Debian
Jessie 8 and later, SUSE), ceph daemons are now managed using native
systemd files instead of the legacy sysvinit scripts. For example:
.. prompt:: bash $
sudo systemctl start ceph.target # start all daemons
sudo systemctl status ceph-osd@12 # check status of osd.12
To list the Ceph systemd units on a node, execute:
.. prompt:: bash $
sudo systemctl status ceph\*.service ceph\*.target
Starting all Daemons
--------------------
To start all daemons on a Ceph Node (irrespective of type), execute the
following:
.. prompt:: bash $
sudo systemctl start ceph.target
Stopping all Daemons
--------------------
To stop all daemons on a Ceph Node (irrespective of type), execute the
following:
.. prompt:: bash $
sudo systemctl stop ceph\*.service ceph\*.target
Starting all Daemons by Type
----------------------------
To start all daemons of a particular type on a Ceph Node, execute one of the
following:
.. prompt:: bash $
sudo systemctl start ceph-osd.target
sudo systemctl start ceph-mon.target
sudo systemctl start ceph-mds.target
Stopping all Daemons by Type
----------------------------
To stop all daemons of a particular type on a Ceph Node, execute one of the
following:
.. prompt:: bash $
sudo systemctl stop ceph-mon\*.service ceph-mon.target
sudo systemctl stop ceph-osd\*.service ceph-osd.target
sudo systemctl stop ceph-mds\*.service ceph-mds.target
Starting a Daemon
-----------------
To start a specific daemon instance on a Ceph Node, execute one of the
following:
.. prompt:: bash $
sudo systemctl start ceph-osd@{id}
sudo systemctl start ceph-mon@{hostname}
sudo systemctl start ceph-mds@{hostname}
For example:
.. prompt:: bash $
sudo systemctl start ceph-osd@1
sudo systemctl start ceph-mon@ceph-server
sudo systemctl start ceph-mds@ceph-server
Stopping a Daemon
-----------------
To stop a specific daemon instance on a Ceph Node, execute one of the
following:
.. prompt:: bash $
sudo systemctl stop ceph-osd@{id}
sudo systemctl stop ceph-mon@{hostname}
sudo systemctl stop ceph-mds@{hostname}
For example:
.. prompt:: bash $
sudo systemctl stop ceph-osd@1
sudo systemctl stop ceph-mon@ceph-server
sudo systemctl stop ceph-mds@ceph-server
.. index:: Upstart; operating a cluster
Running Ceph with Upstart
==========================
Starting all Daemons
--------------------
To start all daemons on a Ceph Node (irrespective of type), execute the
following::
sudo start ceph-all
Stopping all Daemons
--------------------
To stop all daemons on a Ceph Node (irrespective of type), execute the
following::
sudo stop ceph-all
Starting all Daemons by Type
----------------------------
To start all daemons of a particular type on a Ceph Node, execute one of the
following::
sudo start ceph-osd-all
sudo start ceph-mon-all
sudo start ceph-mds-all
Stopping all Daemons by Type
----------------------------
To stop all daemons of a particular type on a Ceph Node, execute one of the
following::
sudo stop ceph-osd-all
sudo stop ceph-mon-all
sudo stop ceph-mds-all
Starting a Daemon
-----------------
To start a specific daemon instance on a Ceph Node, execute one of the
following::
sudo start ceph-osd id={id}
sudo start ceph-mon id={hostname}
sudo start ceph-mds id={hostname}
For example::
sudo start ceph-osd id=1
sudo start ceph-mon id=ceph-server
sudo start ceph-mds id=ceph-server
Stopping a Daemon
-----------------
To stop a specific daemon instance on a Ceph Node, execute one of the
following::
sudo stop ceph-osd id={id}
sudo stop ceph-mon id={hostname}
sudo stop ceph-mds id={hostname}
For example::
sudo stop ceph-osd id=1
sudo start ceph-mon id=ceph-server
sudo start ceph-mds id=ceph-server
.. index:: sysvinit; operating a cluster
Running Ceph with sysvinit
==========================
Each time you to **start**, **restart**, and **stop** Ceph daemons (or your
entire cluster) you must specify at least one option and one command. You may
also specify a daemon type or a daemon instance. ::
{commandline} [options] [commands] [daemons]
The ``ceph`` options include:
+-----------------+----------+-------------------------------------------------+
| Option | Shortcut | Description |
+=================+==========+=================================================+
| ``--verbose`` | ``-v`` | Use verbose logging. |
+-----------------+----------+-------------------------------------------------+
| ``--valgrind`` | ``N/A`` | (Dev and QA only) Use `Valgrind`_ debugging. |
+-----------------+----------+-------------------------------------------------+
| ``--allhosts`` | ``-a`` | Execute on all nodes in ``ceph.conf.`` |
| | | Otherwise, it only executes on ``localhost``. |
+-----------------+----------+-------------------------------------------------+
| ``--restart`` | ``N/A`` | Automatically restart daemon if it core dumps. |
+-----------------+----------+-------------------------------------------------+
| ``--norestart`` | ``N/A`` | Don't restart a daemon if it core dumps. |
+-----------------+----------+-------------------------------------------------+
| ``--conf`` | ``-c`` | Use an alternate configuration file. |
+-----------------+----------+-------------------------------------------------+
The ``ceph`` commands include:
+------------------+------------------------------------------------------------+
| Command | Description |
+==================+============================================================+
| ``start`` | Start the daemon(s). |
+------------------+------------------------------------------------------------+
| ``stop`` | Stop the daemon(s). |
+------------------+------------------------------------------------------------+
| ``forcestop`` | Force the daemon(s) to stop. Same as ``kill -9`` |
+------------------+------------------------------------------------------------+
| ``killall`` | Kill all daemons of a particular type. |
+------------------+------------------------------------------------------------+
| ``cleanlogs`` | Cleans out the log directory. |
+------------------+------------------------------------------------------------+
| ``cleanalllogs`` | Cleans out **everything** in the log directory. |
+------------------+------------------------------------------------------------+
For subsystem operations, the ``ceph`` service can target specific daemon types
by adding a particular daemon type for the ``[daemons]`` option. Daemon types
include:
- ``mon``
- ``osd``
- ``mds``
.. _Valgrind: http://www.valgrind.org/
.. _initctl: http://manpages.ubuntu.com/manpages/raring/en/man8/initctl.8.html
|
