{"id":1514,"date":"2012-12-09T19:09:17","date_gmt":"2012-12-09T18:09:17","guid":{"rendered":"http:\/\/kudzia.eu\/b\/?p=1514"},"modified":"2012-12-10T08:48:31","modified_gmt":"2012-12-10T07:48:31","slug":"ansible-centralized-configuration-management","status":"publish","type":"post","link":"https:\/\/kudzia.eu\/b\/2012\/12\/ansible-centralized-configuration-management\/","title":{"rendered":"ansible – centralized configuration management…"},"content":{"rendered":"

… that did not drive me crazy so far.
\n
\ni’ve been reading a bit about dev-ops-ish solutions for the centralized configuration management since quite a few years. i’ve even used puppet<\/a> starting from 2009 with varying degree of success. i’ve considered also chef<\/a> and cfengine<\/a>. for the last two – i’ve never passed the reading blog posts\/slides stage. puppet – with a bit of pain – did the job and let me set up ~20 servers; but i’d lie if i said it saved me much time. it felt unintuitive; due to the ‘calling back home’ architecture it made me bend over backwards in the configuration of nats and firewalls between actual servers and the puppet-master machine. and it was slow; and it required running [at least periodically] own ruby-based daemon on the managed machines. at some point – somewhere around upgrade to squeeze or just after it it all stopped working altogether. i did not have time or much of motivation to troubleshoot it.<\/p>\n

some time ago i’ve read about ansible<\/a>. no need to install any daemons on the managed machines? using ssh as the transport method? – it all sounded suspiciously sane. few weeks ago i was preparing myself to shard a database – go from 1 pair of masters in the circular replication configuration<\/a> + 1 slave to 3 + 3 masters + 3 slaves and i thought i’ll give ansible a try. as with puppet i decided to use ansible mostly for configuring of nagios \/ munin monitoring, adding few entries to \/etc\/sysctl.d and configuring ntp synchronization – basically all nice to have but not critical parts of the configuration; i don’t operate large scale so mysql’s my.cnf can be still altered manually. <\/p>\n

results? writing playbooks was pretty quick. i found what i needed online without much trouble. i probably don’t have perfect idea about ‘the proper’ way of doing it but it worked nevertheless. and now i have couple of reusable playbooks that can be handy in the future when setting up some new servers. applying playbooks to multiple hosts is pretty quick – thanks to the multi-threading; applying to a single host – is not any faster than with puppet but at least i have some idea what’s exactly going on.<\/p>\n","protected":false},"excerpt":{"rendered":"

… that did not drive me crazy so far.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[17],"tags":[74,73,75],"class_list":["post-1514","post","type-post","status-publish","format-standard","hentry","category-tech","tag-ansible","tag-ccm","tag-puppet"],"_links":{"self":[{"href":"https:\/\/kudzia.eu\/b\/wp-json\/wp\/v2\/posts\/1514","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kudzia.eu\/b\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kudzia.eu\/b\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kudzia.eu\/b\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/kudzia.eu\/b\/wp-json\/wp\/v2\/comments?post=1514"}],"version-history":[{"count":5,"href":"https:\/\/kudzia.eu\/b\/wp-json\/wp\/v2\/posts\/1514\/revisions"}],"predecessor-version":[{"id":1519,"href":"https:\/\/kudzia.eu\/b\/wp-json\/wp\/v2\/posts\/1514\/revisions\/1519"}],"wp:attachment":[{"href":"https:\/\/kudzia.eu\/b\/wp-json\/wp\/v2\/media?parent=1514"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kudzia.eu\/b\/wp-json\/wp\/v2\/categories?post=1514"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kudzia.eu\/b\/wp-json\/wp\/v2\/tags?post=1514"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}