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ctdb-tool: Add new command "event" to ctdb tool

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This command covers all the commands to event daemon.

  ctdb event run <event>
  ctdb event status [<event>] [lastrun|lastfail|lastpass]
  ctdb event script list
  ctdb event script enable <script>
  ctdb event script disable <script>

Signed-off-by: Amitay Isaacs <amitay@gmail.com>
Reviewed-by: Martin Schwenke <martin@meltin.net>
This commit is contained in:
Amitay Isaacs 2016-11-21 14:52:41 +11:00 committed by Amitay Isaacs
parent ca0894e932
commit a652b5c351
2 changed files with 185 additions and 0 deletions
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132
ctdb/doc/ctdb.1.xml
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@ -614,6 +614,138 @@ Interface[2]: Name:eth5 Link:up References:2 (active)
</refsect3>
</refsect2>
<refsect2>
<title>event run|status|script list|script enable|script disable</title>
<para>
This command is used to control event daemon and to inspect
status of various events.
</para>
<variablelist>
<varlistentry>
<term>run <parameter>EVENT</parameter> <parameter>TIMEOUT</parameter> <optional><parameter>ARGUMENTS</parameter></optional> </term>
<listitem>
<para>
This command can be used to manually run specified EVENT
with optional ARGUMENTS. The event will be allowed to run
a maximum of TIMEOUT seconds. If TIMEOUT is 0, then there
is no time limit for running the event.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term>status <optional><parameter>EVENT</parameter></optional> <optional>lastrun|lastpass|lastfail</optional></term>
<listitem>
<para>
This command displays the last execution status of the
specified EVENT. If no event is specified, then the status
of last executed monitor event will be displayed.
</para>
<para>
To see the last successful execution of the event, lastpass
can be specified. Similarly lastfail can be specified
to see the last unsuccessful execution of the event.
The optional lastrun can be specified to query the last
execution of the event.
</para>
<para>
The command will terminate with the exit status
corresponding to the overall status of event that is
displayed. If lastpass is specified, then the command will
always terminate with 0. If lastfail is specified then the
command will always terminate with non-zero exit status.
If lastrun is specified, then the command will terminate
with 0 or not depending on if the last execution of the
event was successful or not.
</para>
<para>
The output is the list of event scripts executed.
Each line shows the name, status, duration and start time
for each script.
</para>
<para>
Example output:
</para>
<screen>
00.ctdb OK 0.014 Sat Dec 17 19:39:11 2016
01.reclock OK 0.013 Sat Dec 17 19:39:11 2016
05.system OK 0.029 Sat Dec 17 19:39:11 2016
06.nfs OK 0.014 Sat Dec 17 19:39:11 2016
10.external DISABLED
10.interface OK 0.037 Sat Dec 17 19:39:11 2016
11.natgw OK 0.011 Sat Dec 17 19:39:11 2016
11.routing OK 0.007 Sat Dec 17 19:39:11 2016
13.per_ip_routing OK 0.007 Sat Dec 17 19:39:11 2016
20.multipathd OK 0.007 Sat Dec 17 19:39:11 2016
31.clamd OK 0.007 Sat Dec 17 19:39:11 2016
40.vsftpd OK 0.013 Sat Dec 17 19:39:11 2016
41.httpd OK 0.018 Sat Dec 17 19:39:11 2016
49.winbind OK 0.023 Sat Dec 17 19:39:11 2016
50.samba OK 0.100 Sat Dec 17 19:39:12 2016
60.nfs OK 0.376 Sat Dec 17 19:39:12 2016
70.iscsi OK 0.009 Sat Dec 17 19:39:12 2016
91.lvs OK 0.007 Sat Dec 17 19:39:12 2016
99.timeout OK 0.007 Sat Dec 17 19:39:12 2016
</screen>
</listitem>
</varlistentry>
<varlistentry>
<term>script list</term>
<listitem>
<para>
List the available event scripts.
</para>
<para>
Example output:
</para>
<screen>
00.ctdb
01.reclock
05.system
06.nfs
10.external DISABLED
10.interface
11.natgw
11.routing
13.per_ip_routing
20.multipathd
31.clamd
40.vsftpd
41.httpd
49.winbind
50.samba
60.nfs
70.iscsi
91.lvs
99.timeout
</screen>
</listitem>
</varlistentry>
<varlistentry>
<term>script enable <parameter>SCRIPT</parameter></term>
<listitem>
<para>
Enable the specified event SCRIPT. Only enabled scripts will be
executed when running any event.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term>script disable <parameter>SCRIPT</parameter></term>
<listitem>
<para>
Disable the specified event SCRIPT. This will prevent the script
from executing when running any event.
</para>
</listitem>
</varlistentry>
</variablelist>
</refsect2>
<refsect2>
<title>scriptstatus</title>
<para>

53
ctdb/tools/ctdb.c
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@ -22,6 +22,7 @@
#include "system/filesys.h"
#include "system/time.h"
#include "system/wait.h"
#include "system/dir.h"
#include <ctype.h>
#include <popt.h>
@ -4758,6 +4759,56 @@ static void print_scriptstatus(struct ctdb_script_list **slist,
}
}
static int control_event(TALLOC_CTX *mem_ctx, struct ctdb_context *ctdb,
int argc, const char **argv)
{
char *t, *event_helper = NULL;
char *eventd_socket = NULL;
const char **new_argv;
int i;
t = getenv("CTDB_EVENT_HELPER");
if (t != NULL) {
event_helper = talloc_strdup(mem_ctx, t);
} else {
event_helper = talloc_asprintf(mem_ctx, "%s/ctdb_event",
CTDB_HELPER_BINDIR);
}
if (event_helper == NULL) {
fprintf(stderr, "Unable to set event daemon helper\n");
return 1;
}
t = getenv("CTDB_SOCKET");
if (t != NULL) {
eventd_socket = talloc_asprintf(mem_ctx, "%s/eventd.sock",
dirname(t));
} else {
eventd_socket = talloc_asprintf(mem_ctx, "%s/eventd.sock",
CTDB_RUNDIR);
}
if (eventd_socket == NULL) {
fprintf(stderr, "Unable to set event daemon socket\n");
return 1;
}
new_argv = talloc_array(mem_ctx, const char *, argc + 1);
if (new_argv == NULL) {
fprintf(stderr, "Memory allocation error\n");
return 1;
}
new_argv[0] = eventd_socket;
for (i=0; i<argc; i++) {
new_argv[i+1] = argv[i];
}
return run_helper(mem_ctx, "event daemon helper", event_helper,
argc+1, new_argv);
}
static int control_scriptstatus(TALLOC_CTX *mem_ctx, struct ctdb_context *ctdb,
int argc, const char **argv)
{
@ -6307,6 +6358,8 @@ static const struct ctdb_cmd {
"wipe the contents of a database.", "<dbname|dbid>"},
{ "recmaster", control_recmaster, false, true,
"show the pnn for the recovery master", NULL },
{ "event", control_event, true, false,
"event and event script commands", NULL },
{ "scriptstatus", control_scriptstatus, false, true,
"show event script status",
"[init|setup|startup|monitor|takeip|releaseip|ipreallocated]" },