Changes between Version 3 and Version 4 of TracUpgrade
- Timestamp:
- Jul 12, 2012, 8:06:20 PM (12 years ago)
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TracUpgrade
v3 v4 1 1 = Upgrade Instructions = 2 2 [[TracGuideToc]] 3 [[PageOutline(2-3,,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 === 75 76 ==== Upgrading from Trac 0.11 to Trac 0.12 ==== 77 76 78 ===== Python 2.3 no longer supported ===== 77 79 The minimum supported version of python is now 2.4 … … 88 90 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. 89 91 92 ===== Resynchronize the Trac Environment Against the Source Code Repository ===== 93 94 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: 95 96 {{{ 97 trac-admin /path/to/projenv repository resync '*' 98 }}} 99 90 100 ===== Improved repository synchronization ===== 91 101 In addition to supporting multiple repositories, there is now a more efficient method for synchronizing Trac and your repositories. … … 97 107 ===== Authz permission checking ===== 98 108 The authz permission checking has been migrated to a fine-grained permission policy. If you use authz permissions (aka `[trac] authz_file` and `authz_module_name`), you must add `AuthzSourcePolicy` in front of your permission policies in `[trac] permission_policies`. You must also remove `BROWSER_VIEW`, `CHANGESET_VIEW`, `FILE_VIEW` and `LOG_VIEW` from your global permissions (with `trac-admin $ENV permission remove` or the "Permissions" admin panel). 109 110 ===== Microsecond timestamps ===== 111 All timestamps in database tables (except the `session` table) have been changed from "seconds since epoch" to "microseconds since epoch" values. This change should be transparent to most users, except for custom reports. If any of your reports use date/time columns in calculations (e.g. to pass them to `datetime()`), you must divide the values retrieved from the database by 1'000'000. Similarly, if a report provides a calculated value to be displayed as a date/time (i.e. with a column named "time", "datetime", "changetime", "date", "created" or "modified"), you must provide a microsecond timestamp, that is, multiply your previous calculation with 1'000'000. 99 112 100 113 ==== Upgrading from Trac 0.10 to Trac 0.11 ==== … … 124 137 == Known Issues == 125 138 126 === parent dir === 127 If you use a trac parent env configuration and one of the plugins in one child does not work, none of the children work. 139 Things you should pay attention to, while upgrading. 140 141 === Customized Templates 142 143 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 ;-) 144 145 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. 146 147 === !ZipImportError === 148 149 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. 150 See [trac:#7014] for details. 128 151 129 152 === Wiki Upgrade === … … 134 157 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]. 135 158 136 == Upgrading Python == 159 === parent dir === 160 If you use a trac parent env configuration and one of the plugins in one child does not work, none of the children work. 161 162 == Related topics 163 164 === Upgrading Python === 137 165 138 166 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. 139 167 140 === Windows and Python 2.6===168 ==== Windows and Python 2.6 ==== 141 169 142 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.170 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. 143 171 144 == Changing Database Backend==145 === SQLite to PostgreSQL===172 === Changing Database Backend === 173 ==== SQLite to PostgreSQL ==== 146 174 147 175 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 148 176 149 == Older Versions ==177 === Upgrading from older versions of Trac === #OlderVersions 150 178 151 179 For upgrades from versions older than Trac 0.10, refer first to [trac:wiki:0.10/TracUpgrade#SpecificVersions].
