cookbook 'lockrun', '= 1.0.0'
lockrun (6) Versions 1.0.0 Follow0
Installs lockrun executable for running cronjobs with overrun protection.
cookbook 'lockrun', '= 1.0.0', :supermarket
knife supermarket install lockrun
knife supermarket download lockrun
lockrun-cookbook
Installs the lockrun executable for running cronjobs with overrun
protection.
Basic Usage
This cookbook is extremely useful when you only want to have a single
process running at a time. We use this to ensure that there is only ever
one Chef Client running at a time. If a process already has the lock it
bails out immediately.
Instead of writing a wrapper script every time you want this
functionality simply use the lockrun executable. It counts the number
of open file descriptors to a lockfile on disk.
```ruby
include_recipe 'lockrun::default'
sleep_time = 0
unless node['chef_client']['splay'].to_i == 0
checksum = Digest::MD5.hexdigest(node['fqdn'] || 'unknown-hostname')
sleep_time = checksum.to_s.hex % node['chef_client']['splay'].to_i
end
lockrun_cron 'chef-client' do
command "/bin/sleep #{sleep_time}; chef-client > /dev/null 2>&1"
cron_options(minute: '0', hour: '', weekday: '')
end
```
Out of the box the following platforms are certified to work and
are tested using our [Test Kitchen][8] configuration. Additional platforms
may work, but your mileage may vary.
- CentOS (RHEL) 5.8, 6.6, 7.1
- Ubuntu 12.04, 14.04
Dependent cookbooks
build-essential >= 0.0.0 |
libarchive ~> 0.6 |
poise ~> 2.0 |
Contingent cookbooks
There are no cookbooks that are contingent upon this one.
Collaborator Number Metric
1.0.0 passed this metric
Foodcritic Metric
1.0.0 passed this metric
Foodcritic Metric
1.0.0 failed this metric
FC031: Cookbook without metadata file: /tmp/cook/24437ee0722db3ede3ece70e/lockrun/metadata.rb:1
FC045: Consider setting cookbook name in metadata: /tmp/cook/24437ee0722db3ede3ece70e/lockrun/metadata.rb:1
License Metric
1.0.0 passed this metric
1.0.0 passed this metric
1.0.0 passed this metric
Foodcritic Metric
1.0.0 failed this metric
FC031: Cookbook without metadata file: /tmp/cook/24437ee0722db3ede3ece70e/lockrun/metadata.rb:1
FC045: Consider setting cookbook name in metadata: /tmp/cook/24437ee0722db3ede3ece70e/lockrun/metadata.rb:1
License Metric
1.0.0 passed this metric
1.0.0 failed this metric
FC045: Consider setting cookbook name in metadata: /tmp/cook/24437ee0722db3ede3ece70e/lockrun/metadata.rb:1
1.0.0 passed this metric