Nick Stielau nstielau
nstielau
/ check-load-debug.rb
Last active
December 26, 2015 05:39
check_load.rb with debugging output
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| #!/usr/bin/env ruby | |
| # | |
| # Check Linux system load | |
| # === | |
| # | |
| # Copyright 2012 Sonian, Inc <[email protected]> | |
| # | |
| # Released under the same terms as Sensu (the MIT license); see LICENSE | |
| # for details. |
nstielau
/ check_with_remediation.json
Last active
April 24, 2019 16:35
Example of Sensu remediation.
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| { | |
| "checks": { | |
| "check_something": { | |
| "command": "ps aux | grep cron", | |
| "interval": 60, | |
| "subscribers": ["application_server"], | |
| "handlers": ["debug", "irc", "remediator"], | |
| "remediation": { | |
| "light_remediation": { | |
| "occurrences": [1, 2], |
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| # For some reason, coffee appears to exit with | |
| # non-zero status (1) when it recieves a SIGTERM | |
| # by default. This doesn't play nice with process | |
| # managers like systemd. This simple two-liner | |
| # will allow your coffee scripts to exit cleanly. | |
| process.on 'SIGTERM', -> | |
| process.exit() |
nstielau
/ config.json
Last active
December 17, 2015 08:08
Check syntax for triggering remediation (publish:false) actions. If occurrences is 1 or 2, and the severity is 1 (warning), the light_remediation will be triggered.
If occurrences is 3 through 10, and the severity is 1 (warning), the medium_remediation will be triggered.
If occurrences is above 2, and the severity is 2 (critical), the heavy_reme…
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| { | |
| "handlers": { | |
| "remediator": { | |
| "type": "pipe", | |
| "command": "/etc/sensu/handlers/remediator.rb" | |
| }, | |
| }, | |
| "checks": { | |
| "fail_with_remediation": { | |
| "command": "/bin/false", |
nstielau
/ queue_checks.json
Created
March 6, 2013 11:47
Example Sensu check, which only alerts after 10 failures on a 60 second interval, and won't alert on nights or weekends.
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| { | |
| "checks": { | |
| "noisy_queue_check": { | |
| "handler": "default", | |
| "command": "/etc/sensu/plugins/check-queue-length.rb", | |
| "interval": 60, | |
| "refresh": 60, | |
| "occurrences": 10, | |
| "subscribers": [ "workers" ], | |
| "subdue" : { |
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| execute "say_hello_to_bob" do | |
| command "echo 'hello again' >> /home/bob/hello.txt" | |
| end |
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| echo '{ | |
| "handlers": ["debug"], | |
| "name": "push_woot_test", | |
| "output": "woot!", | |
| "status": 0 | |
| }' | nc -w1 127.0.0.1 3030 |
nstielau
/ gist:3373649
Created
August 16, 2012 21:03
Remove an unreachable node from Cassandra via JMX
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| wget http://jmxsh.googlecode.com/files/jmxsh-R5.jar | |
| java -jar jmxsh-R*.jar -h localhost -p 7199 | |
| % [Hit Enter to go into Browse Mode] | |
| Select a domain: [Enter number for org.apache.cassandra.net] | |
| Select an mbean: [Enter number for org.apache.cassandra.net:type=Gossiper] | |
| Select an attribute or operation: [Enter number for unsafeAssassinateEndpoint(String p1)] | |
| p1 (String): [Enter IP address of problem node] | |
| It may also be possible to run it directly (untested): | |
| % jmx_invoke -m org.apache.cassandra.net:type=Gossiper unsafeAssassinateEndpoint <STALE-IP-ADDRESS> |
nstielau
/ gist:2846939
Created
May 31, 2012 22:45
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| [root@ncstestonebox plugins]# yum list apache-cassandra1 | |
| Loaded plugins: presto | |
| Installed Packages | |
| apache-cassandra1.noarch 1.0.9-1 @datastax | |
| Available Packages | |
| apache-cassandra1.noarch 1.0.10-1 datastax | |
| [root@ncstestonebox plugins]# yum install apache-cassandra1-1.0.10-1 | |
| Loaded plugins: presto | |
| Setting up Install Process | |
| Resolving Dependencies |
nstielau
/ enable_ES_TLL.sh
Created
May 14, 2012 23:40
Enable ElasticSearch TTL for Graylog2Messages
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| # Get the mapping | |
| >> curl http://127.0.0.1:9200/graylog2/message/_mapping|python -mjson.tool | |
| { | |
| "message": { | |
| "properties": { | |
| "_hostname": { | |
| "type": "string" | |
| }, | |
| "created_at": { | |
| "type": "double" |