Hi,
Is there anyway to reset a role?
What I want to do is read a list of IPs dynamically from a temporary
file, then run a task on a portion of the list at a time, not have the
task run on all the IP's directly in parallel. What I am trying to do
so far is to get the list, run the task on the first IP in the list,
sleep for 5 seconds and then run the task again on the next IP in the
list. Ideally, this would take 5 IPs at a time until all IPs are
executed, but I need to learn to crawl before I can walk ;)
task :test_cycle do
transaction do
set :j, 4
set :k, 0
$servers = IO.readlines(server_list) # Get the list of
servers from
temp file.
while k < j
# This is a method to increment by one.
Capistrano
# complains that "+" is an unknown method
without this.
def add(value)
value = value + 1
return value
end
$ip = $servers[k].chomp
role :servers_each, $ip # Set the
server_each role to the new IP
test_each # Run the task
set :k, add(k) # Increment k by 1.
role :servers_each, servers_each.clear
end
end
end
desc "Test cycling through servers"
task :test_each, :roles => :servers_each do
run "uptime"
puts "Sleeping for 5 seconds"
sleep 5
end
This works except for each time the loop is run, the next IP gets
added to the server_each role. This has the effect of re-running the
command on each server each time. So the first time it runs from 1
server. The next time, it runs on 2 servers, and so on.
How can I set server_each back to empty after running test_each and is
this even the a good way to do this?
Thanks in advance for you help!
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