| seekr | I am attempting to configure a cloud-based Ubuntu system for web hosting purposes. I've run into a problem which I think may be related to a bug reported at https://bugs.launchpad.net/ubuntu/+source/apache2/+bug/1787886 . One of the first things I did in configuring the server was to do an upgrade to what I think is the system described in this bug report. Since I'm unfamiliar with Ubuntu itself, I didn't even know how to determine what LTS | 13:10 |
|---|---|---|
| seekr | release I'm running. Since I see no resolution posted for this bug, it would seem it has not yet been resolved, though the bug report was filed four months ago. Can anyone help? | 13:10 |
| ubottu | Launchpad bug 1787886 in apache2 (Ubuntu) "Upgrade from 16LTS to 18LTS breaks Apache2" [Undecided,New] | 13:10 |
| ikonia | seekr: what's your actual problem | 13:13 |
| seekr | ikonia: I'm trying to restore a Joomla!-based site. | 13:13 |
| seekr | I've installed Apache and MySQL and PHP, all of which are required. | 13:14 |
| ikonia | right, what's the actual problem | 13:14 |
| ikonia | yeah, I get how Joomla works | 13:14 |
| ikonia | what's your actual problem | 13:14 |
| seekr | The problem is that there's a failure in executing index.php a few lines from the end of that file. | 13:14 |
| ikonia | ok, what failure | 13:15 |
| ikonia | what problem | 13:15 |
| seekr | I put print statements in the index.php file to determine where the failure occurs. | 13:15 |
| seekr | It's the one described in the bug report. | 13:15 |
| ikonia | I'm not interested in the bug report | 13:15 |
| ikonia | I'm interested in the information you can give me | 13:15 |
| ikonia | what's teh actual problem | 13:15 |
| seekr | It appears to be failing on the line: $app = JFactory::getApplication('site'); | 13:15 |
| seekr | That's the actual problem at this point. | 13:16 |
| ikonia | what does the apache error logs show | 13:16 |
| seekr | nothing useful - I'll take another look... | 13:16 |
| ikonia | and when you said you upgraded to 18.04 did you move the site to an 18.04 host, or actually upgrade in situ an 16.04 host | 13:16 |
| seekr | in situ, afaik | 13:17 |
| ikonia | what do you mean as far as you know | 13:17 |
| ikonia | you said "the first thing I did was upgrade" you must know how you did it | 13:17 |
| seekr | I don't even know what it means to move the site to an 18.04 host. | 13:17 |
| ikonia | why did you upgrade to 18.04 then ? | 13:17 |
| ikonia | if you don't know how to upgrade / how to use the upgrade process, why did you upgrade and not just continue on 16.04 | 13:17 |
| seekr | Yes, I followed an instruction that was displayed when I logged in as root. | 13:17 |
| seekr | I'll see if I can find it. | 13:18 |
| ikonia | there is an offer to upgrade, not a mandate | 13:18 |
| ikonia | either way, what does the apache logs show when you try to parse the index.php | 13:18 |
| seekr | will look | 13:19 |
| seekr | ikonia: https://termbin.com/g5t0 | 13:21 |
| ikonia | seekr: what log is that ? | 13:22 |
| seekr | ikonia: error.log | 13:22 |
| ikonia | seekr: what does the access log show | 13:22 |
| ikonia | is this the default site or is it a named site | 13:22 |
| seekr | well, it does have a domain pointing to it, but I'm accessing it via IP address | 13:23 |
| seekr | It's the site defined by what's in /var/www/html | 13:23 |
| ikonia | are you using the default site or a name based host | 13:24 |
| seekr | access log shows nothing interesting - just GETs | 13:24 |
| seekr | I don't quite know what you mean by "default site" | 13:24 |
| ikonia | there is a default config for apache or there is a config you can use to build/define a name based host | 13:25 |
| ikonia | which are you doing, using the default or defining a name based host | 13:25 |
| seekr | I haven't touched the Apache config file, except to move the PHP thing closer to the front of the line that indicates what file name suffices will be recognised and processed | 13:26 |
| ikonia | which apache file have you touched | 13:26 |
| ikonia | what is the name of the file that defines the site you are looking at | 13:26 |
| seekr | /etc/apache2/apache2.conf, I think it's called. | 13:27 |
| ikonia | you think ? | 13:27 |
| ikonia | please be sure | 13:27 |
| seekr | yes, that's it | 13:27 |
| ikonia | ok - so are you view the correct access/error logs defined in that file ? | 13:28 |
| seekr | no - wait - that's not the file - hmmm | 13:28 |
| seekr | ikonia: I changed /etc/apache2/mods-available/dir.conf | 13:30 |
| ikonia | why ? | 13:30 |
| tomreyn | chances are it's a php (5->7) upgrade issues, missing modules or general webapp incompatibility / need for webapp upgrade. | 13:30 |
| ikonia | tomreyn: yup, php-curl is the likley candidate | 13:30 |
| seekr | The line I changed now reads: DirectoryIndex index.php index.html index.cgi index.pl index.xhtml index.htm | 13:30 |
| ikonia | but based on the total lack of solid information I want to be sure before suggesting package changes | 13:31 |
| ikonia | seekr: no no, "why" did you change it | 13:31 |
| tomreyn | ikonia: yes, details are needed. | 13:31 |
| seekr | I changed it because it appeared that the index.php file was not being recognised and processed - but I could be wrong - I'm a bit fuzzy now on the order of events - but I'm sure that's not where the problem lies | 13:31 |
| seekr | I just told you why I changed it. | 13:32 |
| ikonia | seekr: if you're sure that's not where the problem lies, why did you change it | 13:32 |
| ikonia | you didn't tell me why you changed it | 13:32 |
| seekr | look - it's easy to change it back to what it was, if only to prove to you that that's not the cause of the problem | 13:32 |
| ikonia | seekr: I didn't say it was the cause of the problem | 13:32 |
| seekr | I know you didn't - but this thing is a red herring | 13:33 |
| ikonia | I'm just trying to understand what you've done and why as you don't seem very clear on a lot of things | 13:33 |
| seekr | I'm clear that the problem I'm experiencing is the one cited in the bug report! | 13:33 |
| ikonia | seekr: please don't state that, as it's clear you have no idea what you're doing or you wouldn't have blindly changed a file | 13:33 |
| ikonia | seekr: right - have you done what the bug report says then ? | 13:33 |
| ikonia | if it's that clear | 13:33 |
| seekr | I don't need to deal with this sort of attitude - I'll come back later when things may be different. Thanks anyway. | 13:33 |
| seekr | The bug report only talks about adding some modules, and yes, I did follow that advice. | 13:34 |
| seekr | PHP 7.2 modules | 13:35 |
| ikonia | seekr: so what modules have you added | 13:35 |
| ikonia | and how did you add the | 13:35 |
| ikonia | which ones | 13:35 |
| ikonia | specifically which modules by which packages | 13:35 |
| seekr | It really doesn't much matter, since adding those modules made no difference - didn't make the problem either better or worse. | 13:35 |
| ikonia | it really does matter | 13:35 |
| ikonia | hence why I'm asking | 13:35 |
| seekr | It may matter to you, since you seem to be trying to make the point that I'm completely confused. | 13:36 |
| ikonia | no | 13:36 |
| ikonia | it matters to fixing the problem | 13:36 |
| ikonia | hence why I'm asking | 13:36 |
| seekr | I'm not finding your questioning to be at all helpful. | 13:36 |
| ikonia | because you don't understand the problem | 13:36 |
| ikonia | which is fine | 13:36 |
| ikonia | however, if you give us the info, I'm sure it can be fixed | 13:36 |
| seekr | My problem, as I originally stated, is what's described in the bug report. | 13:36 |
| ikonia | which modules did you add via which packages | 13:36 |
| seekr | I want to know how to find out whether the bug has been fixed, and what I need to do to take advantage of that fix. | 13:36 |
| ikonia | seekr: right, they are the same symptoms, so lets see what the problem is | 13:37 |
| ikonia | which packages have you added | 13:37 |
| ikonia | seekr: we can work that out now | 13:37 |
| ikonia | it doesn't look like an actual "bug" | 13:37 |
| ikonia | (if it's the same as that bug report) | 13:37 |
| seekr | Clearly you are not willing to pursue that line of inquiry, so I don't find your questioning to be helpful. | 13:37 |
| ikonia | it looks like a difference in how the packages are broken up in php7 | 13:37 |
| ikonia | seekr: I am pursuing it exactly | 13:37 |
| seekr | I need to know why the statement I showed you, which is the same one shown in the bug report, is failing. | 13:38 |
| ikonia | right, and I'm trying to explain that to you | 13:38 |
| ikonia | but I need to know what packages you have so I can understand which ones may be missing and required by your web app | 13:38 |
| seekr | If you can give me a way to list the installed PHP modules, please do so. | 13:38 |
| ikonia | seekr: you said you manaully installed some - those are the key ones | 13:39 |
| ikonia | tell me which ones you installed and how | 13:39 |
| ikonia | (or the key ones to understanding the delta in that bug report I should say) | 13:39 |
| seekr | It's not relevant to the problem solution - but if only to satisfy you, I'll find the statement I used. | 13:39 |
| ikonia | it is relevant | 13:39 |
| ikonia | it's really important to understand what packages you've added in and how you did it | 13:40 |
| ikonia | as that bug report is showing that the upgrade process may miss packages due to the way the packges are broke down different in later versions of php | 13:40 |
| ikonia | seekr: it's clear you're going to fight giving the information so I'll leave you to it | 13:40 |
| seekr | ikonia: apt-get install -y libapache2-mod-php7.2 php7.2-cli php7.2-common php7.2-mbstring php7.2-gd php7.2-intl php7.2-xml php7.2-mysql php7.2-zip | 13:40 |
| seekr | That's fine, ikonia - I don't see the logic in your inquiry. | 13:41 |
| ikonia | no problem then | 13:41 |
| seekr | The problem was not caused by my installation of modules. | 13:41 |
| ikonia | no, if you have the same problem as that bug report, it's most likley cause by missing modules | 13:41 |
| ikonia | that are not installed as part of the 16.04 -> 18.04 upgrade process | 13:41 |
| ikonia | (if it's the same as that bug report - if it's not it will need to be worked through) | 13:42 |
| seekr | which is why I asked you how to display what PHP modules are installed - perhaps you don't know | 13:42 |
| ikonia | seekr: I do know, but what mattered what you manually installed and how as that is the "delta" | 13:42 |
| seekr | delta between what and what? | 13:42 |
| ikonia | and that will tell us what maybe missing as part of the upgrade or if it's the same symptom, but a different bug | 13:42 |
| ikonia | seekr: between would should be installed as part of the upgrade and what changes due to package name/version changes | 13:43 |
| seekr | We don't have enough info to be able to tell what modules are required - we have only that bug report. | 13:43 |
| seekr | I need to find some later report that describes the real cause of the problem and how to solve it. | 13:44 |
| ikonia | seekr: it can be worked out | 13:45 |
| seekr | how? | 13:45 |
| ikonia | it's not hard, jamoola is pretty basic | 13:45 |
| ikonia | by understanding the delta between the old working php packages and the new ones | 13:45 |
| seekr | It's not about Joomla! per se - it's just that that instruction is failing. | 13:45 |
| ikonia | hence why I was asking for the info I was asking for | 13:46 |
| ikonia | seekr: it's about php - and joomla is your example in this case | 13:46 |
| ikonia | the cause will be different depending on the app and what the app needs | 13:46 |
| ikonia | so it sort of does matter what your usecase is (joomla in this case) | 13:46 |
| seekr | I think I'll be better off just searching for later reports, because I think this sort of debugging exceeds the knowledge of either of us. | 13:46 |
| ikonia | as different web apps will have different dependencies | 13:47 |
| ikonia | and those packages will differ in name/version in different php versions | 13:47 |
| ikonia | seekr: doesn't exceed my knowledge | 13:47 |
| ikonia | but nice try at a sly insult though | 13:47 |
| seekr | Well, I'm still looking for something genuinely useful from you. | 13:47 |
| ikonia | all of it was useful | 13:47 |
| seekr | So far, I've only heard criticism and slurs. | 13:47 |
| ikonia | you've seen requests for debug information so that I can get to the answer as quick as possible for you | 13:48 |
| ikonia | but even if what you said where true, it doesn't mean I don't know how to resolve it | 13:48 |
| seekr | The thing is that neither of us has a way to know what might be missing that's causing that instruction to fail. | 13:48 |
| ikonia | I'm pretty sure I can figure it out quickly | 13:49 |
| ikonia | hence why I was asking for some information | 13:49 |
| ikonia | it's not hard with php - it's just going to be package version/name changes most likley | 13:49 |
| ikonia | the other thing you'll need to explain to others is if you are using 18.10 or 18.04 as php 7.2 is default in 18.10 | 13:49 |
| ikonia | and you said you where using 7.2 | 13:50 |
| ikonia | not 7.2 | 13:50 |
| ikonia | I'm not %100 sure without looking if that's true of 18.04 which I think was 7 | 13:50 |
| ikonia | (but I'd need to check that) | 13:50 |
| ikonia | (again this matters due to package names) | 13:50 |
| seekr | but the information you're asking for doesn't bear on the problem - I installed a few PHP modules, but the fact of their being there didn't help. The task is to figure out what module(s) might be needed -- IF that's the cause of the problem, which I doubt either of us has any way to say is what's causing the failure. | 13:50 |
| ikonia | seekr: it does matter to the problem | 13:50 |
| ikonia | if you assume you don't know how to fix it, and assume I do, I'm telling you it does matter which modules are installed and which ones are missing by default | 13:51 |
| seekr | Well, tell me what you think you need. | 13:51 |
| ikonia | rather than argue you it, why not just provide the information to the person trying to help | 13:51 |
| ikonia | even if you don't understand it, it's a good way to learn | 13:51 |
| ikonia | (it's fine to not understand it by the way) | 13:51 |
| seekr | It may well matter, but I don't see how we can figure out what's wrong with respect to missing or incorrect version modules/packages or whatever they're called. | 13:52 |
| ikonia | I've told you it's pretty straight forward | 13:52 |
| ikonia | you just need to work the packages through | 13:52 |
| seekr | I admit my lack of understanding, but I'm not hearing any useful questions from you - only meta-chat criticising my logic. | 13:52 |
| ikonia | again, if you assume you don't know, and I do, rather than constantly saying "you can't work it out" why don't you work with someone to actually work it out who is saying they can | 13:53 |
| ikonia | seekr: then read back all the lines I've typed, I've explained multiple times why I'm asking for what I'm asking for | 13:53 |
| seekr | Give me what you think to be a relevant question! | 13:53 |
| ikonia | understanding the version of ubuntu, understanding what packges you added and how, knowing the php app (to work out deps) | 13:53 |
| ikonia | understanding if it was a clean install or an upgrade | 13:54 |
| seekr | your question?? | 13:54 |
| ikonia | those are all pretty key questions, you can then work out the package deltas | 13:54 |
| ikonia | I've already asked them | 13:54 |
| seekr | I need a command to use to determine version, etc. | 13:54 |
| ikonia | you don't | 13:54 |
| ikonia | well, hang on | 13:54 |
| ikonia | versions of what ? | 13:54 |
| seekr | I'm not a regular Ubuntu user (I use Linux Mint, which is based on Ubuntu, as I'm sure you know). | 13:54 |
| ikonia | actually, I apologies, I'm taking up your time | 13:55 |
| ikonia | I'll leave you to it, but that maybe info that helps whomever helps you | 13:55 |
| ikonia | and it may help you get to the chase quicker | 13:55 |
| seekr | Well, you are as long as you're give me nothing useful, including useful questions. | 13:55 |
| ikonia | please try not to argue that it doesn't matter with those trying to help - they are normally asking for good reasons | 13:55 |
| ikonia | seekr: I've given you multiple useful questions to debug it | 13:55 |
| ikonia | so that you can get a quick and fatual resoution | 13:55 |
| seekr | I'm prepared to accept that possibility, but I need a better demonstration than what you've given me thus far. | 13:56 |
| ikonia | I don't have to demonstrate anything to you | 13:56 |
| ikonia | I know what I'm doing | 13:56 |
| ikonia | I've offered help | 13:56 |
| ikonia | you don't want it (which is fine) | 13:56 |
| seekr | You've given me nothing useful, I'm afraid. :( | 13:56 |
| ikonia | I'm pretty sure I have | 13:56 |
| seekr | Well, I don't know what it is. | 13:56 |
| ikonia | but if you can't see the importance of that information, that's fine, | 13:57 |
| seekr | You're not talking about the actual problem, only trying to convince me of something, and I'm not even sure what it is at this point. Thanks anyway. | 13:57 |
| ikonia | I'm talking about the exact problem | 13:58 |
| ikonia | it can't fully parse the index.php most likely (according to the bug report you posted) due to a missing package | 13:58 |
| ikonia | hence why I asked for the error log to see if we could get there quicker/easier | 13:58 |
| ikonia | and a quick search of ubuntu packages (which I did while we where talking) shows multiple package name differences between php versions | 13:58 |
| ikonia | which backs up the basic principal of the bug report | 13:58 |
| ikonia | so then it's just the question of which packages you need | 13:59 |
| ikonia | (as each use case will be different due to different dependencies) | 13:59 |
| seekr | It's "principle," actually, and as I said, there's nothing interesting in the Apache log file. | 13:59 |
| ikonia | hence why that bug isn't really a "bug" it's just a difference between PHP versions | 13:59 |
| ikonia | seekr: nope, fine there is nothing interesting in the logs (hence why I asked you to check it was the right file) | 14:00 |
| ikonia | it's a hope that you get a clue to short cut debugging | 14:00 |
| ikonia | don't always get it from the error log (although I'm very surprised you got nothing - I'd check for sure if that is the right log file) | 14:00 |
| seekr | I looked in both error.log and access.log - which are the only ones being written to, based on their timestamps. | 14:00 |
| ikonia | that's fine, you don't always get the answer from them, it's just a good tool to check and cut to the chase quicker | 14:01 |
| seekr | /var/log/apache2/error.log | 14:01 |
| ikonia | sometimes you'll see something like "could not find libphpbc.so" so you know straight away it's the bc-math package | 14:01 |
| ikonia | which you can them map to your php version | 14:01 |
| ikonia | (as an example) | 14:01 |
| seekr | yes, fine, but that's not the situation here! | 14:01 |
| ikonia | no, you don't get the output, which is why you need to work out the packages | 14:02 |
| ikonia | the log file is just a useful short cut | 14:02 |
| ikonia | again "useful information" and "useful questions" | 14:02 |
| ikonia | I'll leave you to it, sorry, didn't mean to harp on | 14:02 |
| seekr | whatever | 14:03 |
| ikonia | ? | 14:03 |
| ikonia | look - drop the attitude | 14:03 |
| ikonia | if you want to use this channel, this attitude can't continue | 14:03 |
| ikonia | (for the record 18.04 is php 7.2 too - so you're ok on that front) | 14:05 |
| mybalzitch | is the docker snap considered production ready? I'd imagine so given how hard canonical is pushing snap | 19:46 |
| ikonia | mybalzitch: I certainly am not confident with it | 20:04 |
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