apache MPM settings are not applied
| Affects | Status | Importance | Assigned to | Milestone | |
|---|---|---|---|---|---|
| Ubuntu Repository Cache Charm |
Fix Released
|
High
|
Haw Loeung | ||
Bug Description
The settings for apache MPM workers are written to /etc/apache2/
/etc/apache2/
This means that the u-r-c apache2 can run into these errors:
[Thu Dec 06 03:24:54.774311 2018] [mpm_worker:error] [pid 86272:tid 139974961301376] AH00288: scoreboard is full, not at MaxRequestWorkers
Workaround:
- update charm settings (in my case, I ran "juju config ubuntu-
- wait for settings to apply
- on the unit: cd /etc/apache2; sudo cp conf-available/
- sudo service apache2 restart
Related branches
- Canonical IS Reviewers: Pending requested
- Ubuntu Repository Cache Charmers, Canonical: Pending requested
-
Diff: 31 lines (+10/-1)1 file modifiedlib/ubuntu_repository_cache/apache.py (+10/-1)
- Paul Collins: Approve (lgtm)
- Canonical IS Reviewers: Pending requested
-
Diff: 12 lines (+2/-0)1 file modifiedreactive/ubuntu-repository-cache.py (+2/-0)
| tags: | added: canonical-is |
| Haw Loeung (hloeung) wrote | #1 |
| Changed in ubuntu-repository-cache: | |
| status: | New → Confirmed |
| importance: | Undecided → High |
| Changed in ubuntu-repository-cache: | |
| assignee: | nobody → Haw Loeung (hloeung) |
| status: | Confirmed → In Progress |
| Changed in ubuntu-repository-cache: | |
| assignee: | Haw Loeung (hloeung) → nobody |
| Changed in ubuntu-repository-cache: | |
| status: | In Progress → Triaged |
| Changed in ubuntu-repository-cache: | |
| assignee: | nobody → Haw Loeung (hloeung) |
| status: | Triaged → Fix Released |
I can confirm this as seen today:
| $ juju config ubuntu-
| apache2_
| default: 0
| --
| apache2_
| default: 8192
| --
| apache2_
| default: 100
| --
| apache2_
| default: 50
| --
| apache2_
| default: 512
| --
| apache2_
| default: 2
| --
| apache2_
| default: 64
| --
| apache2_
| default: 64
| --
| apache2_mpm_type:
| default: worker
But yet, the written out config contains the defaults:
| ubuntu@machine-0:~$ cat /etc/apache2/
| #
| # JUJU WARNING: This file is managed by Juju, do NOT edit
| #
|
| # worker MPM
| # StartServers: initial number of server processes to start
| # MaxClients: maximum number of simultaneous client connections
| # MinSpareThreads: minimum number of worker threads which are kept spare
| # MaxSpareThreads: maximum number of worker threads which are kept spare
| # ThreadsPerChild: constant number of worker threads in each server process
| # MaxRequestsPerC
| <IfModule mpm_worker_module>
| StartServers 2
| MinSpareThreads 50
| MaxSpareThreads 100
| ThreadLimit 64
| ThreadsPerChild 64
| ServerLimit 5
| MaxRequestWorkers 256
| MaxConnectionsP
| </IfModule>
It is only when you juju config/set does these values change:
| $ juju config ubuntu-
So now:
| ubuntu@machine-0:~$ cat /etc/apache2/
| #
| # JUJU WARNING: This file is managed by Juju, do NOT edit
| #
|
| # worker MPM
| # StartServers: initial number of server processes to start
| # MaxClients: maximum number of simultaneous client connections
| # MinSpareThreads: minimum number of worker threads which are kept spare
| # MaxSpareThreads: maximum number of worker threads which are kept spare
| # ThreadsPerChild: constant number of worker threads in each server process
| # MaxRequestsPerC
| <IfModule mpm_worker_module>
| StartServers 2
| MinSpareThreads 100
| MaxSpareThreads 200
| ThreadLimit 64
| ThreadsPerChild 64
| ServerLimit 256
| MaxRequestWorkers 16384
| MaxConnectionsP
| </IfModule>