Dalsza cz\u0119\u015b\u0107 kursu traktuj\u0105cego o najpopularniejszym narz\u0119dziu o zarz\u0105dzania konfiguracj\u0105 infrastruktury.<\/p>\n
<\/p>\n
Git.<\/span><\/p>\n Aby nasz Puppet<\/em> m\u00f3g\u0142 wsp\u00f3\u0142pracowa\u0107 z Gitem potrzebujemy mie\u0107 tam za\u0142o\u017cone w pierwszej kolejno\u015bci konto. Po za\u0142o\u017ceniu konta generujemy klucz ssh, kt\u00f3ry p\u00f3\u017aniej wgramy na Gita.<\/p>\n Wy\u015bwietlamy wygenerowany klucz publiczny.<\/p>\n A nast\u0119pnie wklejamy go na Git hubie (www.github.com) w sekcji<\/p>\n Settings -> SSH and GPG keys -> New SSH key<\/em>.<\/p>\n Tworzymy tak\u017ce nasze repozytorium o nazwie np. puppet-nginx<\/em>.<\/p>\n \u00a0Settings -> Repositories -> + -> New repository -> Repository name<\/em><\/p>\n Na naszej maszynie instalujemy gita.<\/p>\n Testujemy nasze repozytorium.<\/p>\n Gdzie GIT_ACCOUNT_NAME<\/em> to nazwa naszego konta na githubie, a puppet-ssh<\/em> to to nazwa repozytorium.<\/p>\n <\/p>\n Modu\u0142y.<\/span><\/p>\n Aby manifest by\u0142 bardziej czytelny i \u0142atwiejszy w utrzymaniu dobrym zwyczajem jest rozbicie go na modu\u0142y.<\/p>\n Generowanie modu\u0142u:<\/p>\n Nazwa modu\u0142u powinna:<\/p>\n Wej\u015bcie do katalogu z modu\u0142ami:<\/p>\n Wy\u015bwietlenie aktualnie zainstalowanych modu\u0142\u00f3w:<\/p>\n Wygenerowanie naszego modu\u0142u o nazwie np. ssh (zamiast username<\/em> wpisujemy nazw\u0119 u\u017cytownika):<\/p>\n W katalogu z modu\u0142ami pojawi\u0142 si\u0119 nowy modu\u0142:<\/p>\n Szkielet naszego modu\u0142u sk\u0142ada si\u0119 z takich plik\u00f3w i katalog\u00f3w:<\/p>\n W pliku Wy\u015blijmy teraz do repozytorium git nasz modu\u0142:<\/p>\n <\/p>\n Klasy.<\/span><\/p>\n To nazwane bloki kodu Puppeta<\/em>, kt\u00f3re s\u0105 u\u017cywane w modu\u0142ach. Nie s\u0105 u\u017cywane dop\u00f3ki nie zostan\u0105 wywo\u0142ane. Mog\u0105 by\u0107 dodane w katalogu w\u0119z\u0142a przez zadeklarowanie ich w manife\u015bcie. U\u017cywaj\u0105 zasob\u00f3w do konfigurowania pakiet\u00f3w, plik\u00f3w, us\u0142ug, etc. U\u017cywaj\u0105 parametr\u00f3w do korzystania z zewn\u0119trznych danych. Mog\u0105 by\u0107 u\u017cyte na danym w\u0119\u017ale tylko jeden raz.<\/p>\n Sk\u0142adnia klasy wygl\u0105da nast\u0119puj\u0105co:<\/p>\n Nazwa klasy sk\u0142ada si\u0119 z segment\u00f3w, kt\u00f3re mog\u0105 zwiera\u0107 tylko ma\u0142e litery, cyfry i podkre\u015blenia. Segmenty \u0142\u0105czy\u0107 mo\u017cemy podw\u00f3jnym znakiem dwukropka “::”. Pierwszy segment nazwy klasy okre\u015bla modu\u0142. Ostatni segment okre\u015bla nazw\u0119 pliku. Ka\u017cdy dodatkowy segment w nazwie pomi\u0119dzy pomi\u0119dzy pierwszym i ostatnim cz\u0142onem nazwy b\u0119dzie dodatkowym podkatalogiem, np.<\/p>\n Gdzie\u00a0 Po wygenerowaniu przez nas wcze\u015bniej modu\u0142u ssh<\/em> definicja klasy ssh<\/em> znajduje si\u0119 w pliku Modyfikujemy j\u0105 tak, aby wygl\u0105da\u0142a nast\u0119puj\u0105co:<\/p>\n Ka\u017cda klasa powinna znajdowa\u0107 si\u0119 w swoim w\u0142asnym pliku z rozszerzeniem .pp. W przeciwnym razie Puppet<\/em> zwr\u00f3ci komunikat o b\u0142\u0119dzie.<\/p>\n Zak\u0142adamy zatem plik oraz w tym samym katalogu plik Sprawdzamy sk\u0142adnie naszej klasy:<\/p>\n Na wyj\u015bciu nie ma \u017cadnych komunikat\u00f3w a zatem sk\u0142adnia jest poprawna. Tym samym ca\u0142y kod dotycz\u0105cy nginx<\/em> przenie\u015bli\u015bmy z pliku Plik\u00a0 <\/p>\n Operatory.<\/span><\/p>\n Operator por\u00f3wnania wyst\u0119puje r\u00f3wnie\u017c w \u0142a\u0144cuchach, jest to operator “ Przyk\u0142ady:<\/p>\n <\/p>\n Wyra\u017cenia warunkowe.<\/span><\/p>\n Bardzo u\u017cyteczne jest wykonywanie r\u00f3\u017cnych operacji w zale\u017cno\u015bci od warto\u015bci pewnych zmiennych lub wyra\u017ce\u0144. Puppet<\/em> pozwala robi\u0107 to na wiele r\u00f3\u017cnych sposob\u00f3w.<\/p>\n Przyk\u0142ad:<\/p>\n Np. konstrukcj\u0119 if:<\/p>\n mo\u017cna zast\u0105pi\u0107 konstrukcj\u0105 case:<\/p>\n Inny przyk\u0142ad case<\/em>:<\/p>\n <\/p>\n Facter.<\/span><\/p>\n Facter<\/em> to narz\u0119dzie, kt\u00f3re dostarcza informacje o systemie. Wszystkie dost\u0119pne informacje o systemie mog\u0105 by\u0107 wy\u015bwietlone po wpisaniu komendy:<\/p>\n U\u017cyjmy factera<\/em> w niedawno utworzonym module. W tym celu zak\u0142adamy i edytujemy plik Poza tym zmieniamy zawarto\u015b\u0107 Zmieniamy tak\u017ce plik oraz Walidacja poprawno\u015bci sk\u0142adni:<\/p>\n <\/p>\n Typy danych.<\/span><\/p>\n Podstawowe typy danych u\u017cywane w Puppecie<\/em> to:<\/p>\n Abstrakcyjne typy danych u\u017cywane przez Puppeta<\/em>:<\/p>\n <\/p>\n Wyra\u017cenie regularne.<\/span><\/p>\n W Puppecie<\/em> s\u0105 r\u00f3\u017cne sposoby na testowanie \u0142a\u0144cuch\u00f3w znak\u00f3w.<\/p>\n Np.<\/p>\n lub<\/p>\n Je\u017celi natomiast chcemy sprawdzi\u0107 czy w \u0142a\u0144cuchu wyst\u0119puje jaki\u015b wzorzec to musimy si\u0119 pos\u0142u\u017cy\u0107 wyra\u017ceniami regularnymi.<\/p>\n Wzorzec pasuje: Np. wyra\u017cenie:<\/p>\n b\u0119dzie prawdziwe je\u017celi string $::hostname<\/em> przyjmie dowoln\u0105 poni\u017csz\u0105 warto\u015b\u0107:<\/p>\n Je\u017celi zachodzi potrzeba odnie\u015b\u0107 si\u0119 do tekstu, kt\u00f3ry by\u0142 wyszukany przez wyra\u017cenie regularne to mo\u017cna to zrobi\u0107 zmienn\u0105 Je\u017celi jest potrzeba odniesienia si\u0119 do jakiej\u015b cz\u0119\u015bci wyszukanego przez wzorzec tekstu to nale\u017cy go zamkn\u0105\u0107 w nawias, np:<\/p>\n# ssh-keygen -t rsa -b 4096 -C \"name@example.com\"<\/pre>\n
# cat \/root\/.ssh\/id_rsa.pub\r\nssh-rsa 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 name@example.com<\/pre>\n
yum -y install git<\/pre>\n
# cd \/tmp\r\n# git clone git@github.com:GIT_ACCOUNT_NAME\/puppet-nginx.git<\/pre>\n
# puppet module generate <MAINTAINER>-<MODULE_NAME><\/pre>\n
\n
# cd \/etc\/puppetlabs\/code\/environments\/production\/modules<\/pre>\n
# ls\r\napache concat ntp stdlib<\/pre>\n
[root@ppmaster modules]# puppet module generate username-nginx\r\nWe need to create a metadata.json file for this module. Please answer the\r\nfollowing questions; if the question is not applicable to this module, feel free\r\nto leave it blank.\r\n\r\nPuppet uses Semantic Versioning (semver.org) to version modules.\r\nWhat version is this module? [0.1.0]\r\n-->\r\n\r\nWho wrote this module? [username]\r\n--> My Name <email@address.com>\r\n\r\nWhat license does this module code fall under? [Apache-2.0]\r\n-->\r\n\r\nHow would you describe this module in a single sentence?\r\n--> Module is associated with NGINX.\r\n\r\nWhere is this module's source code repository?\r\n--> https:\/\/github.com\/GIT_ACCOUNT_NAME<\/em>\/puppet-nginx\r\n\r\nWhere can others go to learn more about this module? [https:\/\/github.com\/mborodziuk\/pupp et-ssh]\r\n-->\r\n\r\nWhere can others go to file issues about this module? [https:\/\/github.com\/mborodziuk\/pup pet-ssh\/issues]\r\n-->\r\n\r\n----------------------------------------\r\n{\r\n\"name\": \"username-nginx\",\r\n\"version\": \"0.1.0\",\r\n\"author\": \"My Name <email@address.com>\",\r\n\"summary\": \"Module is associated with NGINX.\",\r\n\"license\": \"Apache-2.0\",\r\n\"source\": \"https:\/\/github.com\/GIT_ACCOUNT_NAME<\/em>\/puppet-nginx\",\r\n\"project_page\": \"https:\/\/github.com\/GIT_ACCOUNT_NAME<\/em>\/puppet-nginx\",\r\n\"issues_url\": \"https:\/\/github.com\/GIT_ACCOUNT_NAME<\/em>\/puppet-nginx\/issues\",\r\n\"dependencies\": [\r\n{\"name\":\"puppetlabs-stdlib\",\"version_requirement\":\">= 1.0.0\"}\r\n],\r\n\"data_provider\": null\r\n}\r\n----------------------------------------\r\n\r\nAbout to generate this metadata; continue? [n\/Y]\r\n--> Y\r\n\r\nNotice: Generating module at \/etc\/puppetlabs\/code\/environments\/production\/modules\/nginx...\r\nNotice: Populating templates...\r\nFinished; module generated in nginx.\r\nnginx\/Gemfile\r\nnginx\/Rakefile\r\nnginx\/examples\r\nnginx\/examples\/init.pp\r\nnginx\/manifests\r\nnginx\/manifests\/init.pp\r\nnginx\/spec\r\nnginx\/spec\/classes\r\nnginx\/spec\/classes\/init_spec.rb\r\nnginx\/spec\/spec_helper.rb\r\nnginx\/README.md\r\nnginx\/metadata.json<\/pre>\n[root@ppmaster modules]# ls\r\napache concat ntp nginx stdlib<\/pre>\n
[root@ppmaster modules]# cd nginx\r\n[root@ppmaster ssh]# ls\r\nexamples Gemfile manifests metadata.json Rakefile README.md spec<\/pre>\n
metadata.json<\/code> znajduj\u0105 si\u0119 opcje wpisywane przez nas w czasie generowania modu\u0142u. Brakuje tutaj katalogu files<\/code> i templates<\/code>, kt\u00f3re musimy utworzy\u0107 r\u0119cznie.<\/p>\n[root@ppmaster ssh]# git init\r\nInitialized empty Git repository in \/etc\/puppetlabs\/code\/environments\/production\/modules\/nginx\/.git\/\r\n\r\n[root@ppmaster ssh]# git add .\r\n\r\n[root@ppmaster ssh]# git commit -am \"Init commit\"\r\n[master (root-commit) 62cd417] Init commit\r\nCommitter: root <root@ppmaster.example.com>\r\nYour name and email address were configured automatically based\r\non your username and hostname. Please check that they are accurate.\r\nYou can suppress this message by setting them explicitly:\r\ngit config --global user.name \"Your Name\"\r\ngit config --global user.email you@example.com\r\nAfter doing this, you may fix the identity used for this commit with:\r\ngit commit --amend --reset-author\r\n8 files changed, 215 insertions(+)\r\ncreate mode 100644 Gemfile\r\ncreate mode 100644 README.md\r\ncreate mode 100644 Rakefile\r\ncreate mode 100644 examples\/init.pp\r\ncreate mode 100644 manifests\/init.pp\r\ncreate mode 100644 metadata.json\r\ncreate mode 100644 spec\/classes\/init_spec.rb\r\ncreate mode 100644 spec\/spec_helper.rb\r\n\r\n[root@ppmaster ssh]# git remote add origin git@github.com:mborodziuk\/puppet-nginx.git\r\n\r\n[root@ppmaster ssh]# git push origin master\r\nWarning: Permanently added the RSA host key for IP address '192.30.253.113' to the list of known hosts.\r\nCounting objects: 14, done.\r\nDelta compression using up to 4 threads.\r\nCompressing objects: 100% (11\/11), done.\r\nWriting objects: 100% (14\/14), 4.02 KiB | 0 bytes\/s, done.\r\nTotal 14 (delta 0), reused 0 (delta 0)\r\nTo git@github.com:GIT_ACCOUNT_NAME<\/em>\/puppet-nginx.git\r\n* [new branch] master -> master<\/pre>\n
class <CLASS_NAME> (\r\n <DATA_TYPE> <PARAM_NAME>\r\n){\r\n... puppet code ...\r\n}<\/pre>\napache - <MODULE_DIRECTORY>\/apache\/manifest\/init.pp<\/code><\/p>\napache::mod - <MODULE_DIRECTORY>\/apache\/manifest\/mod.pp<\/code><\/p>\napache::mod::passenger - <MODULE_DIRECTORY>\/apache\/manifest\/mod\/passenger.pp<\/code><\/p>\n <MODULE_DIRECTORY><\/code> to \/etc\/puppetlabs\/code\/environments\/production\/modules<\/code><\/p>\n\/etc\/puppetlabs\/code\/environments\/production\/modules\/ssh\/manifest\/init.pp<\/code>.<\/p>\nclass nginx {\r\n class { 'nginx::install': } -> \r\n class { 'nginx::service': }\r\n}<\/pre>\n\/etc\/puppetlabs\/code\/environments\/production\/modules\/nginx\/manifest\/install.pp<\/code> o tre\u015bci:<\/p>\nclass nginx::install {\r\n package { 'epel-release':\r\n ensure => installed,\r\n }->\r\n package { 'httpd':\r\n ensure => absent,\r\n }->\r\n package { 'nginx': \r\n ensure => present, \r\n } \r\n}<\/pre>\nservice.pp<\/code> :<\/p>\nclass nginx::service {\r\n service { 'nginx':\r\n ensure => running,\r\n enable => true,\r\n hasstatus => true,\r\n hasrestart => true,\r\n }\r\n}<\/pre>\n[root@ppmaster manifests]# puppet parser validate init.pp\r\n[root@ppmaster manifests]# puppet parser validate install.pp\r\n[root@ppmaster manifests]# puppet parser validate service.pp\r\n[root@ppmaster manifests]# puppet parser validate user.pp\r\n[root@ppmaster manifests]#<\/pre>\n
site.pp<\/code> do wygenerowanego modu\u0142u.<\/p>\n\/etc\/puppetlabs\/code\/environments\/production\/manifests\/site.pp<\/code> mo\u017cemy teraz zmodyfikowa\u0107 tak aby wczytywa\u0142 tylko utworzony przez nas wcze\u015bniej modu\u0142 nginx<\/em>:<\/p>\nnode 'ppagent1.example.com' {\r\n include nginx\r\n}\r\n\r\nnode default { \r\n user { 'user1': \r\n ensure => present, \r\n comment => 'First and Second Name', \r\n home => '\/home\/user1', \r\n managehome => true, \r\n } \r\n ssh_authorized_key { 'user1': \r\n user => 'user1', \r\n type => 'rsa', \r\n key => 'AAAAB3NzaC1yc2EAAAABIwAAAIEA3ATqENg+GWACa2BzeqTdGnJhNoBer8x6pfWkzNzeM8Zx7\/2Tf2pl7kHdbsiTXEUawqzXZQtZzt\/j3Oya+PZjcRpWNRzprSmd2UxEEPTqDw9LqY5S2B8og\/NyzWaIYPsKoatcgC7VgYHplcTbzEhGu8BsoEVBGYu3IRy5RkAcZik=', \r\n }\r\n}<\/pre>\n\n
=<\/code> Przypisanie<\/li>\n==<\/code> R\u00f3wno\u015b\u0107<\/li>\n<\/ul>\n$eggs == '61'<\/pre>\n
\n
=!<\/code> Nier\u00f3wno\u015b\u0107<\/li>\n<\/ul>\n$username != 'FOTHERINGTON-THOMAS'<\/pre>\n
\n
><\/code>\u00a0 wi\u0119kszy ni\u017c<\/li>\n<<\/code> mniejszy ni\u017c<\/li>\n >=<\/code> wi\u0119kszy lub r\u00f3wny ni\u017c<\/li>\n <=<\/code> mniejszy lub r\u00f3wny ni\u017c<\/li>\n<\/ul>\nif $eggs >= 61 {\r\n notify { 'YOU KNOW I GOT NO SENSE OF EGGS': }\r\n}<\/pre>\nin<\/code>“:<\/p>\nif 'eggs' in 'Can you believe the price of eggs?' {\r\n...\r\n}<\/pre>\n\n
$eggs > 61 and $eggs < 100\r\n$eggs > 61 or $today == 'Thursday'\r\n$today == 'Thursday' and ($eggs < 61 or $eggs > 100)\r\n($today == 'Thursday' and $eggs < 61) or $eggs > 100<\/pre>\n
\n
+<\/code>), odejmowanie (-<\/code>), mno\u017cenie (*<\/code>), dzielenie (\/<\/code>).<\/li>\n<\/ul>\n$celsius = ($fahrenheit - 32) * 5 \/ 9<\/pre>\n
\n
if EXPRESSION {\r\n OPTIONAL_SOMETHING\r\n} \r\nelsif ANOTHER_EXPRESSION {\r\n OPTIONAL_SOMETHING_ELSE\r\n} \r\nelse {\r\n OPTIONAL_OTHER_THING\r\n}<\/pre>\nif $::processorcount >= 16 {\r\n include cpu_intensive_application\r\n} \r\nelsif $::processorcount >= 4 {\r\n include medium_application\r\n} \r\nelse {\r\n include lightweight_application\r\n}<\/pre>\n\n
unless EXPRESSION {\r\n OPTIONAL_SOMETHING\r\n}<\/pre>\n\n
case EXPRESSION {\r\n CASE1 { BLOCK1 }\r\n CASE2 { BLOCK2 }\r\n CASE3 { BLOCK3 }\r\n ...\r\n default : { ... }\r\n}<\/pre>\nif $::operatingsystem == 'Ubuntu' {\r\n include os_specific::ubuntu\r\n} \r\nelsif $::operatingsystem == 'Debian' {\r\n include os_specific::debian\r\n} \r\nelsif $::operatingsystem == 'RedHat' {\r\n include os_specific::redhat\r\n} \r\nelse {\r\n include os_specific::default\r\n}<\/pre>\ncase $::operatingsystem {\r\n 'Ubuntu': { include os_specific::ubuntu }\r\n 'Debian': { include os_specific::debian }\r\n 'RedHat': { include os_specific::redhat }\r\n default : { include os_specific::default }\r\n}<\/pre>\ncase $::operatingsystem {\r\n 'Ubuntu': {\r\n $os_type = 'Debianlike'\r\n }\r\n 'RedHat', 'CentOS': {\r\n $os_type = 'Redhatlike'\r\n }\r\n 'Darwin': {\r\n $os_type = 'Mac OS'\r\n }\r\n default: {\r\n $os_type = 'UNKNOWN'\r\n }\r\n}\r\nnotify { \"You're running a ${os_type} system\": }<\/pre>\n# facter<\/pre>\n
\/etc\/puppetlabs\/code\/environments\/production\/modules\/nginx\/manifest\/params.pp<\/code><\/p>\nclass nginx::params {\r\n case $facts['os']['family'] {\r\n 'Debian': {\r\n $package_name = 'nginx'\r\n $service_name = 'nginx'\r\n }\r\n 'RedHat': {\r\n $package_name = 'nginx'\r\n $service_name = 'nginx'\r\n }\r\n 'default': {\r\n fail(\"${facts['operatingsystem']} is not supported\")\r\n }\r\n }\r\n}<\/pre>\n init.pp<\/code>:<\/p>\nclass nginx(\r\n String $package_name = $::nginx::params::package_name,\r\n String $service_name = $::nginx::params::service_name,\r\n )\r\n inherits ::nginx::params {\r\n class { 'nginx::install': } ->\r\n class { 'nginx::service': }\r\n }\r\n<\/pre>\n install.pp<\/code>:<\/p>\nclass nginx::install (\r\n String $package_name = $::nginx::params::package_name,\r\n ){\r\n package { 'epel-release': \r\n ensure => installed, \r\n }-> \r\n package { 'httpd': \r\n ensure => absent, \r\n }->\r\n package { 'nginx-package':\r\n ensure => present,\r\n name => $package_name,\r\n }\r\n }<\/pre>\nservice.pp<\/code>:<\/p>\nclass nginx::service(\r\n String $service_name = $::nginx::params::service_name,\r\n ){\r\n service { 'nginx-service':\r\n ensure => running,\r\n name => $service_name,\r\n enable => true,\r\n hasstatus => true,\r\n hasrestart => true,\r\n }\r\n}<\/pre>\n[root@ppmaster manifests]# puppet parser validate init.pp\r\n[root@ppmaster manifests]# puppet parser validate params.pp\r\n[root@ppmaster manifests]# puppet parser validate install.pp\r\n[root@ppmaster manifests]# puppet parser validate service.pp<\/pre>\n
\n
\n
<\/code>Integer, Float, String, Boolean, Regexp<\/em><\/li>\nif $role == 'webserver' {\r\n ...\r\n}<\/pre>\nif 'dunk' in 'doughnuts' {\r\n ...\r\n}<\/pre>\n VALUE =~ \/REGEX\/<\/code>
\nWzorzec nie pasuje: VALUE !~ \/REGEX\/<\/code><\/p>\nif $::hostname =~ \/app.*staging\/ {\r\n ...\r\n}<\/pre>\n\n
$0<\/code>, np.<\/p>\n$uname = generate('\/usr\/bin\/uname','-a')\r\nif $uname =~ \/\\d+\\.\\d+\\.\\d+\/ {\r\n notify { \"I have kernel version ${0}\": }\r\n}\r\n\r\nNotice: I have kernel version 3.2.0<\/pre>\n$uname = generate('\/usr\/bin\/uname','-a')\r\n if $uname =~ \/(\\d+)\\.\\d+\\.\\d+\/ {\r\n notify { \"I have kernel version ${0}, major version ${1}\": }\r\n}\r\n\r\nNotice: I have kernel version 3.2.0, major version 3<\/pre>\n