[hobbit] how to search for exact word patterns
Greg, That worked!!! Thanks a lot! Camelia
-----Original Message----- From: Greg Hubbard [mailto:glh.forums at gmail.com] Sent: Friday, September 18, 2009 3:09 PM To: hobbit at hswn.dk Subject: Re: [hobbit] how to search for exact word patterns
Yes -- you only need one % at the beginning of your string to tell Xymon you are going to use a regular expression. You do not need the other % unless they are expected to appear in the log.
When using a regular expression, the | character means "or". So if your example will "fire" if any message contains and of those words. Also you seem to be using * by itself, which means "match the preceding 0 or more times". Normally we use "dot star" ".*" to mean "match anything no matter how long."
Regular expressions are a bit of a mystery, but are very powerful. Xymon uses Perl-compatible regular expressons (PCRE) so you might be able to Google some examples.
If you are searching for "Out of memory" in a log file, you can use "%Out of memory" as your regex string. I do not remember how you deal with spaces in the string and the Xymon help is not helpful. One way to do it would be to change your spaces into \s+ so it would be %Out\s+of\s+memory which removes the embedded spaces (so the Xymon parser does not think part of your regex is some other token on the commend) and also means that you will match of the is at least one whitespace character between each word -- slightly more robust than using a single space.
I know the above is a jumble, but if you will post the exact string you want to match we can help you create the matching expression to help you get the hang of it.
GLH
On 9/18/09, Camelia Anghel <canghel at cjh.org> wrote: Right now looks like this:
LOG /var/log/messages %failure*|%failed*|%error*|%Warning*|%memory* Color=Red
But if I type LOG /var/log/messages %failure*|%failed*|%error*|%Warning*|%out of memory* Color=Red
I'm getting all the messages that have one of these words: out or of or memory somewhere in their string.
Camelia -----Original Message----- From: Greg Hubbard [mailto:glh.forums at gmail.com] Sent: Friday, September 18, 2009 1:25 PM To: hobbit at hswn.dk Subject: Re: [hobbit] how to search for exact word patterns
Try making it a regex (with % prefix) instead of "simple" expression. On 9/18/09, Camelia Anghel <canghel at cjh.org> wrote: Did that but it look for all messages that have one of the 3 words Thanks anyway Camelia
-----Original Message----- From: Josh Luthman [mailto:josh at imaginenetworksllc.com] Sent: Friday, September 18, 2009 11:22 AM To: hobbit at hswn.dk Subject: Re: [hobbit] how to search for exact word patterns
I think it's:
HOST=my.host.com <http://my.host.com/> LOG /var/log/messages "out of memory" COLOR=red
Not tested.
Josh Luthman Office: 937-552-2340 Direct: 937-552-2343 1100 Wayne St Suite 1337 Troy, OH 45373
"When you have eliminated the impossible, that which remains, however improbable, must be the truth." --- Sir Arthur Conan Doyle On Fri, Sep 18, 2009 at 9:26 AM, Camelia Anghel <canghel at cjh.org> wrote:
Hello all, I am trying to set up an alert to search for exact word patterns in /var/log/messages. For example: "Out of Memory"
Any help would be appreciated.
Thanks, Camelia
To unsubscribe from the hobbit list, send an e-mail to hobbit-unsubscribe at hswn.dk
-- Disclaimer: 1) all opinions are my own, 2) I may be completely wrong, 3) my advice is worth at least as much as what you are paying for it, or your money cheerfully refunded.
-- Disclaimer: 1) all opinions are my own, 2) I may be completely wrong, 3) my advice is worth at least as much as what you are paying for it, or your money cheerfully refunded.
Glad to be of service, and thank you very much for posting the results in case others are interested!
GLH
On 9/21/09, Camelia Anghel <canghel at cjh.org> wrote:
Greg,
That worked!!!
Thanks a lot!
Camelia
-----Original Message----- *From:* Greg Hubbard [mailto:glh.forums at gmail.com] *Sent:* Friday, September 18, 2009 3:09 PM *To:* hobbit at hswn.dk *Subject:* Re: [hobbit] how to search for exact word patterns
Yes -- you only need one % at the beginning of your string to tell Xymon you are going to use a regular expression. You do not need the other % unless they are expected to appear in the log.
When using a regular expression, the | character means "or". So if your example will "fire" if any message contains and of those words. Also you seem to be using * by itself, which means "match the preceding 0 or more times". Normally we use "dot star" ".*" to mean "match anything no matter how long."
Regular expressions are a bit of a mystery, but are very powerful. Xymon uses Perl-compatible regular expressons (PCRE) so you might be able to Google some examples.
If you are searching for "Out of memory" in a log file, you can use "%Out of memory" as your regex string. I do not remember how you deal with spaces in the string and the Xymon help is not helpful. One way to do it would be to change your spaces into \s+ so it would be %Out\s+of\s+memory which removes the embedded spaces (so the Xymon parser does not think part of your regex is some other token on the commend) and also means that you will match of the is at least one whitespace character between each word -- slightly more robust than using a single space.
I know the above is a jumble, but if you will post the exact string you want to match we can help you create the matching expression to help you get the hang of it.
GLH
On 9/18/09, *Camelia Anghel* <canghel at cjh.org> wrote:
Right now looks like this:
LOG /var/log/messages %failure*|%failed*|%error*|%Warning*|%memory* Color=Red
But if I type
LOG /var/log/messages %failure*|%failed*|%error*|%Warning*|%out of memory* Color=Red
I’m getting all the messages that have one of these words: out or of or memory somewhere in their string.
Camelia
-----Original Message----- *From:* Greg Hubbard [mailto:glh.forums at gmail.com] *Sent:* Friday, September 18, 2009 1:25 PM *To:* hobbit at hswn.dk *Subject:* Re: [hobbit] how to search for exact word patterns
Try making it a regex (with % prefix) instead of "simple" expression.
On 9/18/09, *Camelia Anghel* <canghel at cjh.org> wrote:
Did that but it look for all messages that have one of the 3 words
Thanks anyway
Camelia
-----Original Message----- *From:* Josh Luthman [mailto:josh at imaginenetworksllc.com] *Sent:* Friday, September 18, 2009 11:22 AM *To:* hobbit at hswn.dk *Subject:* Re: [hobbit] how to search for exact word patterns
I think it's:
HOST=my.host.com LOG /var/log/messages "out of memory" COLOR=red
Not tested.
Josh Luthman Office: 937-552-2340 Direct: 937-552-2343 1100 Wayne St Suite 1337 Troy, OH 45373
"When you have eliminated the impossible, that which remains, however improbable, must be the truth." --- Sir Arthur Conan Doyle
On Fri, Sep 18, 2009 at 9:26 AM, Camelia Anghel <canghel at cjh.org> wrote:
Hello all, I am trying to set up an alert to search for exact word patterns in /var/log/messages. For example: "Out of Memory"
Any help would be appreciated.
Thanks, Camelia
To unsubscribe from the hobbit list, send an e-mail to hobbit-unsubscribe at hswn.dk
-- Disclaimer: 1) all opinions are my own, 2) I may be completely wrong, 3) my advice is worth at least as much as what you are paying for it, or your money cheerfully refunded.
-- Disclaimer: 1) all opinions are my own, 2) I may be completely wrong, 3) my advice is worth at least as much as what you are paying for it, or your money cheerfully refunded.
-- Disclaimer: 1) all opinions are my own, 2) I may be completely wrong, 3) my advice is worth at least as much as what you are paying for it, or your money cheerfully refunded.
Could you post your working config, please?
Josh Luthman Office: 937-552-2340 Direct: 937-552-2343 1100 Wayne St Suite 1337 Troy, OH 45373
"When you have eliminated the impossible, that which remains, however improbable, must be the truth." --- Sir Arthur Conan Doyle
On Mon, Sep 21, 2009 at 3:00 PM, Camelia Anghel <canghel at cjh.org> wrote:
Greg,
That worked!!!
Thanks a lot!
Camelia
-----Original Message----- *From:* Greg Hubbard [mailto:glh.forums at gmail.com] *Sent:* Friday, September 18, 2009 3:09 PM *To:* hobbit at hswn.dk *Subject:* Re: [hobbit] how to search for exact word patterns
Yes -- you only need one % at the beginning of your string to tell Xymon you are going to use a regular expression. You do not need the other % unless they are expected to appear in the log.
When using a regular expression, the | character means "or". So if your example will "fire" if any message contains and of those words. Also you seem to be using * by itself, which means "match the preceding 0 or more times". Normally we use "dot star" ".*" to mean "match anything no matter how long."
Regular expressions are a bit of a mystery, but are very powerful. Xymon uses Perl-compatible regular expressons (PCRE) so you might be able to Google some examples.
If you are searching for "Out of memory" in a log file, you can use "%Out of memory" as your regex string. I do not remember how you deal with spaces in the string and the Xymon help is not helpful. One way to do it would be to change your spaces into \s+ so it would be %Out\s+of\s+memory which removes the embedded spaces (so the Xymon parser does not think part of your regex is some other token on the commend) and also means that you will match of the is at least one whitespace character between each word -- slightly more robust than using a single space.
I know the above is a jumble, but if you will post the exact string you want to match we can help you create the matching expression to help you get the hang of it.
GLH
On 9/18/09, *Camelia Anghel* <canghel at cjh.org> wrote:
Right now looks like this:
LOG /var/log/messages %failure*|%failed*|%error*|%Warning*|%memory* Color=Red
But if I type
LOG /var/log/messages %failure*|%failed*|%error*|%Warning*|%out of memory* Color=Red
I’m getting all the messages that have one of these words: out or of or memory somewhere in their string.
Camelia
-----Original Message----- *From:* Greg Hubbard [mailto:glh.forums at gmail.com] *Sent:* Friday, September 18, 2009 1:25 PM *To:* hobbit at hswn.dk *Subject:* Re: [hobbit] how to search for exact word patterns
Try making it a regex (with % prefix) instead of "simple" expression.
On 9/18/09, *Camelia Anghel* <canghel at cjh.org> wrote:
Did that but it look for all messages that have one of the 3 words
Thanks anyway
Camelia
-----Original Message----- *From:* Josh Luthman [mailto:josh at imaginenetworksllc.com] *Sent:* Friday, September 18, 2009 11:22 AM *To:* hobbit at hswn.dk *Subject:* Re: [hobbit] how to search for exact word patterns
I think it's:
HOST=my.host.com LOG /var/log/messages "out of memory" COLOR=red
Not tested.
Josh Luthman Office: 937-552-2340 Direct: 937-552-2343 1100 Wayne St Suite 1337 Troy, OH 45373
"When you have eliminated the impossible, that which remains, however improbable, must be the truth." --- Sir Arthur Conan Doyle
On Fri, Sep 18, 2009 at 9:26 AM, Camelia Anghel <canghel at cjh.org> wrote:
Hello all, I am trying to set up an alert to search for exact word patterns in /var/log/messages. For example: "Out of Memory"
Any help would be appreciated.
Thanks, Camelia
To unsubscribe from the hobbit list, send an e-mail to hobbit-unsubscribe at hswn.dk
-- Disclaimer: 1) all opinions are my own, 2) I may be completely wrong, 3) my advice is worth at least as much as what you are paying for it, or your money cheerfully refunded.
-- Disclaimer: 1) all opinions are my own, 2) I may be completely wrong, 3) my advice is worth at least as much as what you are paying for it, or your money cheerfully refunded.
Could you post your working config, please?
Josh Luthman Office: 937-552-2340 Direct: 937-552-2343 1100 Wayne St Suite 1337 Troy, OH 45373
"When you have eliminated the impossible, that which remains, however improbable, must be the truth." --- Sir Arthur Conan Doyle
On Mon, Sep 21, 2009 at 3:00 PM, Camelia Anghel <canghel at cjh.org> wrote:
Greg,
That worked!!!
Thanks a lot!
Camelia
-----Original Message----- *From:* Greg Hubbard [mailto:glh.forums at gmail.com] *Sent:* Friday, September 18, 2009 3:09 PM *To:* hobbit at hswn.dk *Subject:* Re: [hobbit] how to search for exact word patterns
Yes -- you only need one % at the beginning of your string to tell Xymon you are going to use a regular expression. You do not need the other % unless they are expected to appear in the log.
When using a regular expression, the | character means "or". So if your example will "fire" if any message contains and of those words. Also you seem to be using * by itself, which means "match the preceding 0 or more times". Normally we use "dot star" ".*" to mean "match anything no matter how long."
Regular expressions are a bit of a mystery, but are very powerful. Xymon uses Perl-compatible regular expressons (PCRE) so you might be able to Google some examples.
If you are searching for "Out of memory" in a log file, you can use "%Out of memory" as your regex string. I do not remember how you deal with spaces in the string and the Xymon help is not helpful. One way to do it would be to change your spaces into \s+ so it would be %Out\s+of\s+memory which removes the embedded spaces (so the Xymon parser does not think part of your regex is some other token on the commend) and also means that you will match of the is at least one whitespace character between each word -- slightly more robust than using a single space.
I know the above is a jumble, but if you will post the exact string you want to match we can help you create the matching expression to help you get the hang of it.
GLH
On 9/18/09, *Camelia Anghel* <canghel at cjh.org> wrote:
Right now looks like this:
LOG /var/log/messages %failure*|%failed*|%error*|%Warning*|%memory* Color=Red
But if I type
LOG /var/log/messages %failure*|%failed*|%error*|%Warning*|%out of memory* Color=Red
I’m getting all the messages that have one of these words: out or of or memory somewhere in their string.
Camelia
-----Original Message----- *From:* Greg Hubbard [mailto:glh.forums at gmail.com] *Sent:* Friday, September 18, 2009 1:25 PM *To:* hobbit at hswn.dk *Subject:* Re: [hobbit] how to search for exact word patterns
Try making it a regex (with % prefix) instead of "simple" expression.
On 9/18/09, *Camelia Anghel* <canghel at cjh.org> wrote:
Did that but it look for all messages that have one of the 3 words
Thanks anyway
Camelia
-----Original Message----- *From:* Josh Luthman [mailto:josh at imaginenetworksllc.com] *Sent:* Friday, September 18, 2009 11:22 AM *To:* hobbit at hswn.dk *Subject:* Re: [hobbit] how to search for exact word patterns
I think it's:
HOST=my.host.com LOG /var/log/messages "out of memory" COLOR=red
Not tested.
Josh Luthman Office: 937-552-2340 Direct: 937-552-2343 1100 Wayne St Suite 1337 Troy, OH 45373
"When you have eliminated the impossible, that which remains, however improbable, must be the truth." --- Sir Arthur Conan Doyle
On Fri, Sep 18, 2009 at 9:26 AM, Camelia Anghel <canghel at cjh.org> wrote:
Hello all, I am trying to set up an alert to search for exact word patterns in /var/log/messages. For example: "Out of Memory"
Any help would be appreciated.
Thanks, Camelia
To unsubscribe from the hobbit list, send an e-mail to hobbit-unsubscribe at hswn.dk
-- Disclaimer: 1) all opinions are my own, 2) I may be completely wrong, 3) my advice is worth at least as much as what you are paying for it, or your money cheerfully refunded.
-- Disclaimer: 1) all opinions are my own, 2) I may be completely wrong, 3) my advice is worth at least as much as what you are paying for it, or your money cheerfully refunded.
participants (3)
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canghel＠cjh.org
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glh.forums＠gmail.com
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josh＠imaginenetworksllc.com