Changes between Version 3 and Version 4 of TracUpgrade
- Timestamp:
- 04/03/14 16:26:46 (11 years ago)
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TracUpgrade
v3 v4 1 1 = Upgrade Instructions = 2 2 [[TracGuideToc]] 3 [[PageOutline(2-4,,inline,unnumbered)]] 3 4 4 5 == Instructions == … … 6 7 Typically, there are seven steps involved in upgrading to a newer version of Trac: 7 8 8 === 1. Update the Trac Code === #UpdatetheTracCode 9 === 1. Bring your server off-line 10 11 It is not a good idea to update a running server: the server processes may have parts of the current packages cached in memory, and updating the code will likely trigger [#ZipImportError internal errors]. 12 13 === 2. Update the Trac Code === #UpdatetheTracCode 9 14 10 15 Get the new version as described in TracInstall, or your operating system specific procedure. … … 28 33 This cleanup is not mandatory, but makes it easier to troubleshoot issues later on, as you won't waste your time looking at code or templates from a previous release that are not being used anymore... As usual, make a backup before actually deleting things. 29 34 30 === 2. Upgrade the Trac Environment === #UpgradetheTracEnvironment35 === 3. Upgrade the Trac Environment === #UpgradetheTracEnvironment 31 36 32 37 Environment upgrades are not necessary for minor version releases unless otherwise noted. … … 45 50 }}} 46 51 47 === 3. Update the Trac Documentation === #UpdatetheTracDocumentation52 === 4. Update the Trac Documentation === #UpdatetheTracDocumentation 48 53 49 54 Every [TracEnvironment Trac environment] includes a copy of the Trac documentation for the installed version. As you probably want to keep the included documentation in sync with the installed version of Trac, [TracAdmin trac-admin] provides a command to upgrade the documentation: … … 54 59 Note that this procedure will leave your `WikiStart` page intact. 55 60 56 === 4. Resynchronize the Trac Environment Against the Source Code Repository ===57 58 Each [TracEnvironment Trac environment] must be resynchronized against the source code repository in order to avoid errors such as "[http://trac.edgewall.org/ticket/6120 No changeset ??? in the repository]" while browsing the source through the Trac interface:59 60 {{{61 trac-admin /path/to/projenv repository resync '*'62 }}}63 61 64 62 === 5. Refresh static resources === … … 70 68 this will extract static resources and CGI scripts (`trac.wsgi`, etc) from new Trac version and its plugins into `/deploy/path`. 71 69 72 Some web browsers cache CSS and Javascript files persistently, so you may need to instruct your users to manually erase the contents of their browser's cache. 70 Some web browsers (IE, Opera) cache CSS and Javascript files aggressively, so you may need to instruct your users to manually erase the contents of their browser's cache, a forced refreshed (`<F5>`) should be enough. 71 {{{#!comment 72 Remove above note once #9936 is fixed. 73 }}} 73 74 74 75 === 6. Steps specific to a given Trac version === 76 ==== Upgrading from Trac 0.12 to Trac 1.0 ==== #to1.0 77 78 The Trac components for Subversion support are no longer enabled by default. To enable the svn support, you need to make sure the `tracopt.versioncontrol.svn` components are enabled, for example by setting the following in the TracIni: 79 {{{ 80 [components] 81 tracopt.versioncontrol.svn.* = enabled 82 }}} 83 The upgrade procedure should take care of this and change the TracIni appropriately, unless you already had the svn components explicitly disabled. 84 85 Another step in the automatic upgrade will change the way the attachments are stored. If you're a bit paranoid, you might want to take a backup of the `attachments` directory before upgrading (but if you are, you already did a full copy of the environment, no?). In case the `attachments` directory contains some files which are //not// attachments, the last step of the migration to the new layout will fail: the deletion of the now unused `attachments` directory can't be done if there are still files and folders in it. You may ignore this error, but better go have a look to these files, move them elsewhere and remove the `attachments` directory manually to cleanup the environment. The attachments themselves are now all located in your environment below the `files/attachments` directory. 86 87 75 88 ==== Upgrading from Trac 0.11 to Trac 0.12 ==== 89 76 90 ===== Python 2.3 no longer supported ===== 77 91 The minimum supported version of python is now 2.4 … … 87 101 88 102 This may be of interest to users with only one repository, since there's now a way to avoid the potentially costly resync check at every request. 103 104 ===== Resynchronize the Trac Environment Against the Source Code Repository ===== 105 106 Each [TracEnvironment Trac environment] must be resynchronized against the source code repository in order to avoid errors such as "[http://trac.edgewall.org/ticket/6120 No changeset ??? in the repository]" while browsing the source through the Trac interface: 107 108 {{{ 109 trac-admin /path/to/projenv repository resync '*' 110 }}} 89 111 90 112 ===== Improved repository synchronization ===== … … 127 149 == Known Issues == 128 150 129 === parent dir === 130 If you use a trac parent env configuration and one of the plugins in one child does not work, none of the children work. 151 Things you should pay attention to, while upgrading. 152 153 === Customized Templates 154 155 Trac supports customization of its Genshi templates by placing copies of the templates in the `<env>/templates` folder of your [TracEnvironment environment] or in a common location specified in the [[TracIni#GlobalConfiguration| [inherit] templates_dir]] configuration setting. If you choose to do so, be wary that you will need to repeat your changes manually on a copy of the new templates when you upgrade to a new release of Trac (even a minor one), as the templates will likely evolve. So keep a diff around ;-) 156 157 The preferred way to perform TracInterfaceCustomization is to write a custom plugin doing an appropriate `ITemplateStreamFilter` transformation, as this is more robust in case of changes: we usually won't modify element `id`s or change CSS `class`es, and if we have to do so, this will be documented in the TracDev/ApiChanges pages. 158 159 === !ZipImportError === 160 161 Due to internal caching of zipped packages, whenever the content of the packages change on disk, the in-memory zip index will no longer match and you'll get irrecoverable !ZipImportError errors. Better anticipate and bring your server down for maintenance before upgrading. 162 See [trac:#7014] for details. 131 163 132 164 === Wiki Upgrade === … … 137 169 A known issue in some versions of PySqlite (2.5.2-2.5.4) prevents the trac-admin upgrade script from successfully upgrading the database format. It is advised to use either a newer or older version of the sqlite python bindings to avoid this error. For more details see ticket [trac:#9434]. 138 170 139 == Upgrading Python == 171 === parent dir === 172 If you use a trac parent env configuration and one of the plugins in one child does not work, none of the children work. 173 174 == Related topics 175 176 === Upgrading Python === 140 177 141 178 Upgrading Python to a newer version will require reinstallation of Python packages: Trac of course; also [http://pypi.python.org/pypi/setuptools easy_install], if you've been using that. Assuming you're using Subversion, you'll also need to upgrade the Python bindings for svn. 142 179 143 === Windows and Python 2.6===180 ==== Windows and Python 2.6 ==== 144 181 145 If you've been using !CollabNet's Subversion package, you may need to uninstall that in favor of [http://alagazam.net/ Al gazam], which has the Python bindings readily available (see TracSubversion). The good news is, that works with no tweaking.182 If you've been using !CollabNet's Subversion package, you may need to uninstall that in favor of [http://alagazam.net/ Alagazam], which has the Python bindings readily available (see TracSubversion). The good news is, that works with no tweaking. 146 183 147 == Changing Database Backend==148 === SQLite to PostgreSQL===184 === Changing Database Backend === 185 ==== SQLite to PostgreSQL ==== 149 186 150 187 The [http://trac-hacks.org/wiki/SqliteToPgScript sqlite2pg] script on [http://trac-hacks.org trac-hacks.org] has been written to assist in migrating a SQLite database to a PostgreSQL database 151 188 152 == Older Versions ==189 === Upgrading from older versions of Trac === #OlderVersions 153 190 154 191 For upgrades from versions older than Trac 0.10, refer first to [trac:wiki:0.10/TracUpgrade#SpecificVersions].
