1HB_REPORT(8) Pacemaker documentation HB_REPORT(8)
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6 hb_report - create report for CRM based clusters (Pacemaker)
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9 hb_report -f {time|"cts:"testnum} [-t time] [-u user] [-l file] [-n
10 nodes] [-E files] [-p patt] [-L patt] [-e prog] [-MSDCZAVsvhd] [dest]
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13 The hb_report(1) is a utility to collect all information (logs,
14 configuration files, system information, etc) relevant to Pacemaker
15 (CRM) over the given period of time.
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18 dest
19 The destination directory. Must be an absolute path. The resulting
20 tarball is placed in the parent directory and contains the last
21 directory element of this path. Typically something like
22 /tmp/standby-failed. If left out, the tarball is created in your
23 home directory named "hb_report-current_date", for instance
24 hb_report-Wed-03-Mar-2010.
25 -d
27 Don’t create the compressed tar, but leave the result in a
28 directory.
29 -f { time | "cts:"testnum }
31 The start time from which to collect logs. The time is in the
32 format as used by the Date::Parse perl module. For cts tests,
33 specify the "cts:" string followed by the test number. This option
34 is required.
35 -t time
37 The end time to which to collect logs. Defaults to now.
38 -n nodes
40 A list of space separated hostnames (cluster members). hb_report
41 may try to find out the set of nodes by itself, but if it runs on
42 the loghost which, as it is usually the case, does not belong to
43 the cluster, that may be difficult. Also, OpenAIS doesn’t contain a
44 list of nodes and if Pacemaker is not running, there is no way to
45 find it out automatically. This option is cumulative (i.e. use -n
46 "a b" or -n a -n b).
47 -l file
49 Log file location. If, for whatever reason, hb_report cannot find
50 the log files, you can specify its absolute path.
51 -E files
53 Extra log files to collect. This option is cumulative. By default,
54 /var/log/messages are collected along with the cluster logs.
55 -M
57 Don’t collect extra log files, but only the file containing
58 messages from the cluster subsystems.
59 -L patt
61 A list of regular expressions to match in log files for analysis.
62 This option is additive (default: "CRIT: ERROR:").
63 -p patt
65 Additional patterns to match parameter name which contain sensitive
66 information. This option is additive (default: "passw.*").
67 -A
69 This is an OpenAIS cluster. hb_report has some heuristics to find
70 the cluster stack, but that is not always reliable. By default,
71 hb_report assumes that it is run on a Heartbeat cluster.
72 -u user
74 The ssh user. hb_report will try to login to other nodes without
75 specifying a user, then as "root", and finally as "hacluster". If
76 you have another user for administration over ssh, please use this
77 option.
78 -S
80 Single node operation. Run hb_report only on this node and don’t
81 try to start slave collectors on other members of the cluster.
82 Under normal circumstances this option is not needed. Use if ssh(1)
83 does not work to other nodes.
84 -Z
86 If destination directories exist, remove them instead of exiting
87 (this is default for CTS).
88 -V
90 Print the version including the last repository changeset.
91 -v
93 Increase verbosity. Normally used to debug unexpected behaviour.
94 -h
96 Show usage and some examples.
97 -D (obsolete)
99 Don’t invoke editor to fill the description text file.
100 -e prog (obsolete)
102 Your favourite text editor. Defaults to $EDITOR, vim, vi, emacs, or
103 nano, whichever is found first.
104 -C (obsolete)
106 Remove the destination directory once the report has been put in a
107 tarball.
108
110 Last night during the backup there were several warnings encountered
111 (logserver is the log host):
112 logserver# hb_report -f 3:00 -t 4:00 -n "node1 node2" /tmp/report
114 collects everything from all nodes from 3am to 4am last night. The
116 files are compressed to a tarball /tmp/report.tar.bz2.
117 Just found a problem during testing:
119 # note the current time
121 node1# date
122 Fri Sep 11 18:51:40 CEST 2009
123 node1# /etc/init.d/heartbeat start
124 node1# nasty-command-that-breaks-things
125 node1# sleep 120 #wait for the cluster to settle
126 node1# hb_report -f 18:51 /tmp/hb1
127 # if hb_report can´t figure out that this is openais
129 node1# hb_report -f 18:51 -A /tmp/hb1
130 # if hb_report can´t figure out the cluster members
132 node1# hb_report -f 18:51 -n "node1 node2" /tmp/hb1
133 The files are compressed to a tarball /tmp/hb1.tar.bz2.
135
137 The compressed tar archive is the final product of hb_report. This is
138 one example of its content, for a CTS test case on a three node OpenAIS
139 cluster:
140 $ ls -RF 001-Restart
142 001-Restart:
144 analysis.txt events.txt logd.cf s390vm13/ s390vm16/
145 description.txt ha-log.txt openais.conf s390vm14/
146 001-Restart/s390vm13:
148 STOPPED crm_verify.txt hb_uuid.txt openais.conf@ sysinfo.txt
149 cib.txt dlm_dump.txt logd.cf@ pengine/ sysstats.txt
150 cib.xml events.txt messages permissions.txt
151 001-Restart/s390vm13/pengine:
153 pe-input-738.bz2 pe-input-740.bz2 pe-warn-450.bz2
154 pe-input-739.bz2 pe-warn-449.bz2 pe-warn-451.bz2
155 001-Restart/s390vm14:
157 STOPPED crm_verify.txt hb_uuid.txt openais.conf@ sysstats.txt
158 cib.txt dlm_dump.txt logd.cf@ permissions.txt
159 cib.xml events.txt messages sysinfo.txt
160 001-Restart/s390vm16:
162 STOPPED crm_verify.txt hb_uuid.txt messages sysinfo.txt
163 cib.txt dlm_dump.txt hostcache openais.conf@ sysstats.txt
164 cib.xml events.txt logd.cf@ permissions.txt
165 The top directory contains information which pertains to the cluster or
167 event as a whole. Files with exactly the same content on all nodes will
168 also be at the top, with per-node links created (as it is in this
169 example the case with openais.conf and logd.cf).
170 The cluster log files are named ha-log.txt regardless of the actual log
172 file name on the system. If it is found on the loghost, then it is
173 placed in the top directory. Files named messages are excerpts of
174 /var/log/messages from nodes.
175 Most files are copied verbatim or they contain output of a command. For
177 instance, cib.xml is a copy of the CIB found in
178 /var/lib/heartbeat/crm/cib.xml. crm_verify.txt is output of the
179 crm_verify(8) program.
180 Some files are result of a more involved processing:
182 analysis.txt
184 A set of log messages matching user defined patterns (may be
185 provided with the -L option).
186 events.txt
188 A set of log messages matching event patterns. It should provide
189 information about major cluster motions without unnecessary
190 details. These patterns are devised by the cluster experts.
191 Currently, the patterns cover membership and quorum changes,
192 resource starts and stops, fencing (stonith) actions, and cluster
193 starts and stops. events.txt is always generated for each node. In
194 case the central cluster log was found, also combined for all
195 nodes.
196 permissions.txt
198 One of the more common problem causes are file and directory
199 permissions. hb_report looks for a set of predefined directories
200 and checks their permissions. Any issues are reported here.
201 backtraces.txt
203 gdb generated backtrace information for cores dumped within the
204 specified period.
205 sysinfo.txt
207 Various release information about the platform, kernel, operating
208 system, packages, and anything else deemed to be relevant. The
209 static part of the system.
210 sysstats.txt
212 Output of various system commands such as ps(1), uptime(1),
213 netstat(8), and ifconfig(8). The dynamic part of the system.
214 description.txt should contain a user supplied description of the
216 problem, but since it is very seldom used, it will be dropped from the
217 future releases.
218
220 ssh
221 It is not strictly required, but you won’t regret having a
222 password-less ssh. It is not too difficult to setup and will save
223 you a lot of time. If you can’t have it, for example because your
224 security policy does not allow such a thing, or you just prefer
225 menial work, then you will have to resort to the semi-manual
226 semi-automated report generation. See below for instructions.
227 If you need to supply a password for your passphrase/login, then
229 please use the -u option.
230 Times
232 In order to find files and messages in the given period and to
233 parse the -f and -t options, hb_report uses perl and one of the
234 Date::Parse or Date::Manip perl modules. Note that you need only
235 one of these. Furthermore, on nodes which have no logs and where
236 you don’t run hb_report directly, no date parsing is necessary. In
237 other words, if you run this on a loghost then you don’t need these
238 perl modules on the cluster nodes.
239 On rpm based distributions, you can find Date::Parse in
241 perl-TimeDate and on Debian and its derivatives in
242 libtimedate-perl.
243 Core dumps
245 To backtrace core dumps gdb is needed and the packages with the
246 debugging info. The debug info packages may be installed at the
247 time the report is created. Let’s hope that you will need this
248 really seldom.
249
251 Specifying times can at times be a nuisance. That is why we have chosen
252 to use one of the perl modules—they do allow certain freedom when
253 talking dates. You can either read the instructions at the Date::Parse
254 examples page[1]. or just rely on common sense and try stuff like:
255 3:00 (today at 3am)
257 15:00 (today at 3pm)
258 2007/9/1 2pm (September 1st at 2pm)
259 Tue Sep 15 20:46:27 CEST 2009 (September 15th etc)
260 hb_report will (probably) complain if it can’t figure out what do you
262 mean.
263 Try to delimit the event as close as possible in order to reduce the
265 size of the report, but still leaving a minute or two around for good
266 measure.
267 -f is not optional. And don’t forget to quote dates when they contain
269 spaces.
270
272 By default, the sensitive data in CIB and PE files is not mangled by
273 hb_report because that makes PE input files mostly useless. If you
274 still have no other option but to send the report to a public mailing
275 list and do not want the sensitive data to be included, use the -s
276 option. Without this option, hb_report will issue a warning if it finds
277 information which should not be exposed. By default, parameters
278 matching passw.* are considered sensitive. Use the -p option to specify
279 additional regular expressions to match variable names which may
280 contain information you don’t want to leak. For example:
281 # hb_report -f 18:00 -p "user.*" -p "secret.*" /var/tmp/report
283 Heartbeat’s ha.cf is always sanitized. Logs and other files are not
285 filtered.
286
288 It may be tricky to find syslog logs. The scheme used is to log a
289 unique message on all nodes and then look it up in the usual syslog
290 locations. This procedure is not foolproof, in particular if the syslog
291 files are in a non-standard directory. We look in /var/log /var/logs
292 /var/syslog /var/adm /var/log/ha /var/log/cluster. In case we can’t
293 find the logs, please supply their location:
294 # hb_report -f 5pm -l /var/log/cluster1/ha-log -S /tmp/report_node1
296 If you have different log locations on different nodes, well, perhaps
298 you’d like to make them the same and make life easier for everybody.
299 Files starting with "ha-" are preferred. In case syslog sends messages
301 to more than one file, if one of them is named ha-log or ha-debug those
302 will be favoured over syslog or messages.
303 hb_report supports also archived logs in case the period specified
305 extends that far in the past. The archives must reside in the same
306 directory as the current log and their names must be prefixed with the
307 name of the current log (syslog-1.gz or messages-20090105.bz2).
308 If there is no separate log for the cluster, possibly unrelated
310 messages from other programs are included. We don’t filter logs, but
311 just pick a segment for the period you specified.
312
314 So, your ssh doesn’t work. In that case, you will have to run this
315 procedure on all nodes. Use -S so that hb_report doesn’t bother with
316 ssh:
317 # hb_report -f 5:20pm -t 5:30pm -S /tmp/report_node1
319 If you also have a log host which is not in the cluster, then you’ll
321 have to copy the log to one of the nodes and tell us where it is:
322 # hb_report -f 5:20pm -t 5:30pm -l /var/tmp/ha-log -S /tmp/report_node1
324 If you reconsider and want the ssh setup, take a look at the CTS README
326 file for instructions.
327
329 hb_report collects files and other information in a fairly
330 straightforward way. The most complex tasks are discovering the log
331 file locations (if syslog is used which is the most common case) and
332 coordinating the operation on multiple nodes.
333 The instance of hb_report running on the host where it was invoked is
335 the master instance. Instances running on other nodes are slave
336 instances. The master instance communicates with slave instances by
337 ssh. There are multiple ssh invocations per run, so it is essential
338 that the ssh works without password, i.e. with the public key
339 authentication and authorized_keys.
340 The operation consists of three phases. Each phase must finish on all
342 nodes before the next one can commence. The first phase consists of
343 logging unique messages through syslog on all nodes. This is the
344 shortest of all phases.
345 The second phase is the most involved. During this phase all local
347 information is collected, which includes:
348 · logs (both current and archived if the start time is far in the
350 past)
351 · various configuration files (openais, heartbeat, logd)
353 · the CIB (both as xml and as represented by the crm shell)
355 · pengine inputs (if this node was the DC at any point in time over
357 the given period)
358 · system information and status
360 · package information and status
362 · dlm lock information
364 · backtraces (if there were core dumps)
366 The third phase is collecting information from all nodes and analyzing
368 it. The analyzis consists of the following tasks:
369 · identify files equal on all nodes which may then be moved to the
371 top directory
372 · save log messages matching user defined patterns (defaults to
374 ERRORs and CRITical conditions)
375 · report if there were coredumps and by whom
377 · report crm_verify(8) results
379 · save log messages matching major events to events.txt
381 · in case logging is configured without loghost, node logs and events
383 files are combined using a perl utility
384
386 Finding logs may at times be extremely difficult, depending on how
387 weird the syslog configuration. It would be nice to ask syslog-ng
388 developers to provide a way to find out the log destination based on
389 facility and priority.
390 If you think you found a bug, please rerun with the -v option and
392 attach the output to bugzilla.
393 hb_report can function in a satisfactory way only if ssh works to all
395 nodes using authorized_keys (without password).
396 There are way too many options.
398
400 Written by Dejan Muhamedagic, <dejan@suse.de[2]>
401
403 Pacemaker: http://clusterlabs.org/
404 Heartbeat and other Linux HA resources: http://linux-ha.org/wiki
406 OpenAIS: http://www.openais.org/
408 Corosync: http://www.corosync.org/
410
412 Date::Parse(3)
413
415 Copyright (C) 2007-2009 Dejan Muhamedagic. Free use of this software is
416 granted under the terms of the GNU General Public License (GPL).
417
419 1. Date::Parse examples page
420 http://search.cpan.org/dist/TimeDate/lib/Date/Parse.pm#EXAMPLE_DATES
421 2. dejan@suse.de
423 mailto:dejan@suse.de
424hb_report 1.2 06/22/2012 HB_REPORT(8)