{"id":1407,"date":"2013-05-27T22:00:32","date_gmt":"2013-05-27T21:00:32","guid":{"rendered":"http:\/\/michauko.org\/blog\/?p=1407"},"modified":"2014-10-01T16:34:56","modified_gmt":"2014-10-01T15:34:56","slug":"upgrade-debian-squeeze-wheezy-retour-dexperience","status":"publish","type":"post","link":"https:\/\/michauko.org\/blog\/upgrade-debian-squeeze-wheezy-retour-dexperience-1407\/","title":{"rendered":"Upgrade Debian Squeeze => Wheezy : retour d’exp\u00e9rience"},"content":{"rendered":"

\"debian\"Salut,
\nUn bail que je ne blogge plus grand chose, j’ai trop d’autres occupations.
\nM’enfin l\u00e0, il fallait bien mettre \u00e0 jour la release stable de Debian… Comme elle est sortie il y a quelques temps d\u00e9j\u00e0, \u00e7a s’annon\u00e7ait pas trop risqu\u00e9 avec Google sous la main pour r\u00e9soudre les probl\u00e8mes d\u00e9j\u00e0 connus par d’autres. Je ne regrette pas cette d\u00e9cision car \u00e7a c’est exactement pass\u00e9 comme \u00e7a… donc je reprends ici ceux que j’ai rencontr\u00e9, \u00e7a peut resservir.<\/p>\n

Je vous livre donc ici les diff\u00e9rents probl\u00e8mes sur un tas de serveurs (donc un tas de configuration et de services diff\u00e9rents)
\nC’est parti :<\/p>\n

C\u00f4t\u00e9 APT<\/h2>\n

Le backport est int\u00e9gr\u00e9 au mainstream (je sais pas si c’est le terme) normal, donc il faut adapter. On passe de quelque chose comme :<\/p>\n

deb ftp:\/\/ftp.fr.debian.org\/debian\/ squeeze main contrib  non-free\r\ndeb http:\/\/security.debian.org\/ squeeze\/updates main contrib non-free\r\ndeb ftp:\/\/ftp.fr.debian.org\/debian\/ squeeze-updates main contrib  non-free\r\ndeb http:\/\/backports.debian.org\/debian-backports squeeze-backports main contrib non-free<\/pre>\n
\u00e0 :<\/p>\n
deb ftp:\/\/ftp.fr.debian.org\/debian\/ wheezy main contrib  non-free\r\ndeb http:\/\/security.debian.org\/ wheezy\/updates main contrib non-free\r\ndeb ftp:\/\/ftp.fr.debian.org\/debian\/ wheezy-updates main contrib  non-free\r\ndeb ftp:\/\/ftp.fr.debian.org\/debian\/ wheezy-backports main contrib non-free<\/pre>\n
Attention \u00e0 bien regarder vos fichiers \/etc\/apt\/preferences et \/etc\/apt\/apt.conf.d\/* o\u00f9 vous pouvez avoir fix\u00e9 des versions de paquets ou fix\u00e9 la release \u00e0 Apt::Default-Release \"squeeze\";<\/code> au lieu de Apt::Default-Release \"stable\";<\/code>.
\nEnsuite, un aptitude update && aptitude dist-upgrade<\/code> et c’est parti.
\nLorsque vous aurez les \u00e9ternelles questions o\u00f9 il faut choisir entre le fichier de conf du mainteneur et le votre, ne pas oublier de bien lire les diff\u00e9rences de fichiers. Si vous n’avez rien touch\u00e9, vous prenez celle du mainteneur, sinon vous r\u00e9fl\u00e9chissez. L’id\u00e9e est de b\u00e9n\u00e9ficier des nouveaut\u00e9s sans pour autant perdre vos param\u00e9trages. Quitte \u00e0 accepter le fichier du mainteneur puis aller voir le fichier \u00ab\u00a0machin.conf.dpkg-dist\u00a0\u00bb pour y retrouver vos anciennes modifs et adapter.<\/p>\n
Enfin, si aptitude mouline pendant des heures sur l’analyse des d\u00e9pendances, lisez ces messages<\/a>. Cela se r\u00e9sout avec aptitude en mode interface.<\/p>\n
\/bin\/sh et \/etc\/crontab<\/h2>\n
Attention, j’ai le sentiment qu’on vient de passer de \/bin\/sh => bash \u00e0 \/bin\/sh => dash (avec un ‘d’).
\nDonc dans la crontab, pour un script bash mal \u00e9crit (pas d’ent\u00eate #!\/bin\/bash), le lancement depuis crontab ne fonctionnait plus tout \u00e0 fait en dash.
\nLa crontab contient un SHELL=\/bin\/sh<\/code> en ent\u00eate qui fait que par d\u00e9faut, les scripts partent donc en dash.
\nExemples de diff\u00e9rences dash\/bash.<\/a><\/p>\n
Mise \u00e0 jour PHP & oracle<\/h2>\n
On passe de PHP de 5.3 \u00e0 5.4, rien de violent (sauf pour les puristes peut-\u00eatre qui iront voir la page PHP de ces changements), mais tout au moins mon module Oracle a saut\u00e9 \u00e0 cette occasion.
\nUn pecl install oci8<\/code> devrait suffire \u00e0 vous ramener ce qu’il faut. Testez alors \u00e0 nouveau votre connexion Oracle.<\/p>\n
le patch suhosin pour Apache<\/h2>\n
Il y a une discussion cit\u00e9e sur ce bug<\/a>. Entre le fait que ce patch ne se justifierait plus trop (PHP aurait au fil du temps assez \u00e9volu\u00e9 pour combler pas mal de choses que suhosin apporte) et le fait que \u00e7a manquerait de main d’oeuvre c\u00f4t\u00e9 debian\/suhosin. Bref, le patch est d\u00e9sactiv\u00e9 pour le moment et il faut v\u00e9rifier les conf de vos serveurs\/applications web et adapter les \u00e9ventuels param\u00e8tres suhosin positionn\u00e9s (php_value…).
\nJe vous recommande un bon locate suhosin<\/code> et un grep -ri suhosin \/etc\/apache2\/<\/code> pour y voir clair rapidement et dans la plupart des outils web.<\/p>\n
ocs-inventory-server<\/h2>\n
Alors l\u00e0, le paquet a simplement saut\u00e9 sur un serveur OCS. Rien de m\u00e9chant, la conf est rest\u00e9e, la base de donn\u00e9es aussi, mais les agents ont vite couin\u00e9.
\nIl suffit simplement d’installer \u00e0 nouveau le paquet.
\nCoup de pas de bol ? bug ? je ne sais pas.<\/p>\n
postfix et SASL<\/h2>\n
Quelques l\u00e9gers param\u00e8tres sautent dans le main.cf : virtual_create_maildirsize, message_helo_required, virtual_maildir_extended, virtual_overquota_bounce<\/code>
\nHYPER IMPORTANT : l’authentification en envoi ne marchait plus du tout, on trouve des messages d’erreur type May 23 09:39:33 bla postfix\/smtpd[31851]: warning: mail.toto.fr[x.y.z.t]: SASL LOGIN authentication failed: no mechanism available<\/code>.
\nJ’ai trouv\u00e9 diff\u00e9rentes m\u00e9thodes sur le web pour contourner \u00e7a, dont une qui consiste \u00e0 r\u00e9injecter les paquets \u00ab\u00a0Squeeze\u00a0\u00bb de SASL. Beurk. Et \u00e7a ne passait m\u00eame pas pour moi. Finalement, la bonne m\u00e9thode est de commenter le param\u00e8tre auxprop_plugin: whatever<\/i><\/code> et votre fichier \/etc\/postfix\/sasl\/smtpd.conf<\/code>. Pourquoi ? paske… (je n’ai pas \u00e9t\u00e9 lire de prose sur le sujet et la conf SASL est d\u00e9j\u00e0 assez p\u00e9nible).
\nJ’ai trouv\u00e9 \u00e7a ici<\/a>.<\/p>\n
postfix et quota<\/h2>\n
Sur un certain serveur, j’utilise postfix avec le patch \u00ab\u00a0VDA\u00a0\u00bb ajoutant la notion de quota<\/a> sur les bo\u00eetes mails.
\nIl faut bien penser \u00e0 r\u00e9cup\u00e9rer la nouvelle version du patch pour les sources Postfix en question (2.9.6), et on repart pour un tour pour g\u00e9n\u00e9rer le paquet<\/a>.
\nSAUF QUE, la compilation \u00e9choue. C’est d\u00e9crit ici<\/a>.
\nJe ne sais pas pourquoi, mais il faut changer un param\u00e8tre dans le fichier rules de \/usr\/src\/postfix-2.9.6\/debian\/) ; une histoire de \u00ab\u00a0DEB_BUILD_HARDENING\u00a0\u00bb.
\nL\u00e0 \u00e7a compile.
\nPerso ensuite, pour figer postfix dans le temps (et tant pis pour les MAJ de s\u00e9cu) et \u00e9viter que aptitude veuille me le mettre \u00e0 jour \u00e0 tout de bras, j’ajoute ceci dans mon \/etc\/apt\/preferences<\/code> :<\/p>\n
Package: postfix\r\nPin: version *\r\nPin-Priority: -1\r\n\r\nPackage: postfix-mysql\r\nPin: version *\r\nPin-Priority: -1<\/pre>\n
Et voil\u00e0<\/h2>\n
Voil\u00e0, c’est tout. Ca ne fait pas trop de probl\u00e8mes finalement, mais certains peuvent vraiment vous bloquer si vous n’avez pas rapidement la solution.<\/p>\n","protected":false},"excerpt":{"rendered":"
Salut, Un bail que je ne blogge plus grand chose, j’ai trop d’autres occupations. M’enfin l\u00e0, il fallait bien mettre \u00e0 jour la release stable de Debian… Comme elle est sortie il y a quelques …<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_crdt_document":"","_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[2,82],"tags":[535,571,306,309,430,118,404,489,534,533],"class_list":["post-1407","post","type-post","status-publish","format-standard","hentry","category-debian","category-pl","tag-aptitude","tag-debian","tag-oracle","tag-pecl","tag-php","tag-postfix","tag-sasl","tag-squeeze","tag-upgrade","tag-wheezy"],"yoast_head":"\nUpgrade Debian Squeeze => Wheezy : retour d'exp\u00e9rience - Le blog de Michauko<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/michauko.org\/blog\/upgrade-debian-squeeze-wheezy-retour-dexperience-1407\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Upgrade Debian Squeeze => Wheezy : retour d'exp\u00e9rience - Le blog de Michauko\" \/>\n<meta property=\"og:description\" content=\"Salut, Un bail que je ne blogge plus grand chose, j’ai trop d’autres occupations. 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