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Can you replace dash in metric name with underscore?

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I am scraping an exporter that gives me metric names with dashes. Prometheus metric names cannot have dashes so I fail to scrape those metrics.

Is it possible to replace the dash with an underscore to make the metric name valid?

• Current: collectd_a-b_derive_total.


• Desired: collectd_a_b_derive_total.

I added this to my config but it does not appear to work.

 - source_labels: [__name__]
 regex: "(.*)-(.*)"
 action: replace
 target_label: "$1_$2"

Also, what is a good way to debug this?

prometheus

share|improve this question

asked Mar 26 at 0:53

Martin VelezMartin Velez

1,12177 silver badges2323 bronze badges

add a comment | 

1

I am scraping an exporter that gives me metric names with dashes. Prometheus metric names cannot have dashes so I fail to scrape those metrics.

Is it possible to replace the dash with an underscore to make the metric name valid?

• Current: collectd_a-b_derive_total.


• Desired: collectd_a_b_derive_total.

I added this to my config but it does not appear to work.

 - source_labels: [__name__]
 regex: "(.*)-(.*)"
 action: replace
 target_label: "$1_$2"

Also, what is a good way to debug this?

prometheus

share|improve this question

asked Mar 26 at 0:53

Martin VelezMartin Velez

1,12177 silver badges2323 bronze badges

add a comment | 

I am scraping an exporter that gives me metric names with dashes. Prometheus metric names cannot have dashes so I fail to scrape those metrics.

Is it possible to replace the dash with an underscore to make the metric name valid?

• Current: collectd_a-b_derive_total.


• Desired: collectd_a_b_derive_total.

I added this to my config but it does not appear to work.

 - source_labels: [__name__]
 regex: "(.*)-(.*)"
 action: replace
 target_label: "$1_$2"

Also, what is a good way to debug this?

prometheus

share|improve this question

asked Mar 26 at 0:53

Martin VelezMartin Velez

1,12177 silver badges2323 bronze badges

 - source_labels: [__name__]
 regex: "(.*)-(.*)"
 action: replace
 target_label: "$1_$2"

prometheus

prometheus

share|improve this question

asked Mar 26 at 0:53

Martin VelezMartin Velez

1,12177 silver badges2323 bronze badges

share|improve this question

asked Mar 26 at 0:53

Martin VelezMartin Velez

1,12177 silver badges2323 bronze badges

asked Mar 26 at 0:53

Martin VelezMartin Velez

1,12177 silver badges2323 bronze badges

asked Mar 26 at 0:53

Martin VelezMartin Velez

1,12177 silver badges2323 bronze badges

1 Answer
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0

I emailed the prometheus-users mailing list and someone responded that Prometheus cannot "fix" metric names with dashes/hyphens.

Since, I prefer to not edit the application emitting the metrics, I found a workaround.

1. Set up Nginx.


2. Configure it as a reverse proxy.
   
   
   • Listen on 19103.
   
   
   • Get and rewrite body from 9103 using Nginx's sub_filter directive.
   
   


3. Configure Prometheus to scrape 19103 instead of 9103.

Sample reverse-proxy.conf:

server
 listen 19103;

 location / 
 proxy_pass http://127.0.0.1:9103;
 sub_filter_types *;
 sub_filter 'purple-' 'purple_';
 sub_filter_once off;
 

share|improve this answer

answered Mar 28 at 18:03

Martin VelezMartin Velez

1,12177 silver badges2323 bronze badges

add a comment | 

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0

I emailed the prometheus-users mailing list and someone responded that Prometheus cannot "fix" metric names with dashes/hyphens.

Since, I prefer to not edit the application emitting the metrics, I found a workaround.

1. Set up Nginx.


2. Configure it as a reverse proxy.
   
   
   • Listen on 19103.
   
   
   • Get and rewrite body from 9103 using Nginx's sub_filter directive.
   
   


3. Configure Prometheus to scrape 19103 instead of 9103.

Sample reverse-proxy.conf:

server
 listen 19103;

 location / 
 proxy_pass http://127.0.0.1:9103;
 sub_filter_types *;
 sub_filter 'purple-' 'purple_';
 sub_filter_once off;
 

share|improve this answer

answered Mar 28 at 18:03

Martin VelezMartin Velez

1,12177 silver badges2323 bronze badges

add a comment | 

0

I emailed the prometheus-users mailing list and someone responded that Prometheus cannot "fix" metric names with dashes/hyphens.

Since, I prefer to not edit the application emitting the metrics, I found a workaround.

1. Set up Nginx.


2. Configure it as a reverse proxy.
   
   
   • Listen on 19103.
   
   
   • Get and rewrite body from 9103 using Nginx's sub_filter directive.
   
   


3. Configure Prometheus to scrape 19103 instead of 9103.

Sample reverse-proxy.conf:

server
 listen 19103;

 location / 
 proxy_pass http://127.0.0.1:9103;
 sub_filter_types *;
 sub_filter 'purple-' 'purple_';
 sub_filter_once off;
 

share|improve this answer

answered Mar 28 at 18:03

Martin VelezMartin Velez

1,12177 silver badges2323 bronze badges

add a comment | 

I emailed the prometheus-users mailing list and someone responded that Prometheus cannot "fix" metric names with dashes/hyphens.

Since, I prefer to not edit the application emitting the metrics, I found a workaround.

1. Set up Nginx.


2. Configure it as a reverse proxy.
   
   
   • Listen on 19103.
   
   
   • Get and rewrite body from 9103 using Nginx's sub_filter directive.
   
   


3. Configure Prometheus to scrape 19103 instead of 9103.

Sample reverse-proxy.conf:

server
 listen 19103;

 location / 
 proxy_pass http://127.0.0.1:9103;
 sub_filter_types *;
 sub_filter 'purple-' 'purple_';
 sub_filter_once off;
 

share|improve this answer

answered Mar 28 at 18:03

Martin VelezMartin Velez

1,12177 silver badges2323 bronze badges

server
 listen 19103;

 location / 
 proxy_pass http://127.0.0.1:9103;
 sub_filter_types *;
 sub_filter 'purple-' 'purple_';
 sub_filter_once off;
 

share|improve this answer

answered Mar 28 at 18:03

Martin VelezMartin Velez

1,12177 silver badges2323 bronze badges

answered Mar 28 at 18:03

Martin VelezMartin Velez

1,12177 silver badges2323 bronze badges

answered Mar 28 at 18:03

Martin VelezMartin Velez

1,12177 silver badges2323 bronze badges