This is part N of "why aren't I getting security updates". What causes this one?
- OS: Fedora Workstation 23
- Date: 2016-03-03
1. transient meaning failure, then success
# dnf check-update
Error: Failed to synchronize cache for repo 'updates' from 'http://download.fedoraproject.org/pub/fedora/linux/updates/23/x86_64/': Yum repo downloading error: Downloading error(s): repodata/0e95ae636347564e66b0e600c9a1369d5c57415ed969bc7bba13e1a190d195c1-filelists.xml.gz - Cannot download, all mirrors were already tried without success; repodata/33467a86da0d3b3b24c27bf054700c0e35041a0643054e62f961d687b2a8c628-prestodelta.xml.xz - Cannot download, all mirrors were already tried without success; repodata/6ae21040c8354039ebdaebd0b3ebb99d6b577c0231e83faf5fdd906944bf32ee-primary.xml.gz - Cannot download, all mirrors were already tried without success; repodata/125571cd75bc296f2b59a8f11d92652f8faa8cbfc9e0fe0637b37c26e9a258fd-updateinfo.xml.xz - Cannot download, all mirrors were already tried without success
1.1 so there was an failure, what does wget show?
# wget http://download.fedoraproject.org/pub/fedora/linux/updates/23/x86_64/repodata/0e95ae636347564e66b0e600c9a1369d5c57415ed969bc7bba13e1a190d195c1-filelists.xml.gz --2016-03-03 23:32:47-- http://download.fedoraproject.org/pub/fedora/linux/updates/23/x86_64/repodata/0e95ae636347564e66b0e600c9a1369d5c57415ed969bc7bba13e1a190d195c1-filelists.xml.gz Resolving download.fedoraproject.org (download.fedoraproject.org)... 188.8.131.52, 184.108.40.206, 220.127.116.11, ... Connecting to download.fedoraproject.org (download.fedoraproject.org)|18.104.22.168|:80... connected. HTTP request sent, awaiting response... 302 Found Location: https://www.mirrorservice.org/sites/dl.fedoraproject.org/pub/fedora/linux/updates/23/x86_64/repodata/0e95ae636347564e66b0e600c9a1369d5c57415ed969bc7bba13e1a190d195c1-filelists.xml.gz [following] --2016-03-03 23:32:48-- https://www.mirrorservice.org/sites/dl.fedoraproject.org/pub/fedora/linux/updates/23/x86_64/repodata/0e95ae636347564e66b0e600c9a1369d5c57415ed969bc7bba13e1a190d195c1-filelists.xml.gz Resolving www.mirrorservice.org (www.mirrorservice.org)... 22.214.171.124 Connecting to www.mirrorservice.org (www.mirrorservice.org)|126.96.36.199|:443... connected. HTTP request sent, awaiting response... 404 Not Found 2016-03-03 23:32:48 ERROR 404: Not Found.
1.2 just to be clear, there is no HTTP proxy to worry about here
# echo $http_proxy #
1.3 scratch my head, try again
# dnf check-update
Fedora 23 - x86_64 - Updates 1.3 MB/s | 20 MB 00:15
google-chrome 55 kB/s | 3.4 kB 00:00
Last metadata expiration check performed 0:00:00 ago on Thu Mar 3 23:35:26 2016.
google-chrome-stable.x86_64 49.0.2623.75-1 google-chrome
^ obviously this includes security updates...
graphite2.x86_64 1.3.6-1.fc23 updates
....Fedora security update...
pcre.x86_64 8.38-6.fc23 updates
I then looked at the directory on mirrorservice.org in my browser (i.e. after the successful update check). The filelist had changed name to 85f1054756ada3a2a9ab2f6c40c23378c74afb22ba4599c3cbb46334be0820a1-filelists.xml.gz. So we were trying to fetch an old file which had been deleted.
The investigation above started because I noticed the Fedora security updates above, but GNOME wasn't notifying me about them. GNOME Software showed 0 updates even after clicking refresh, which is not the behaviour I would expect.
pkcon update did show updates, although I forgot to record it. I don't know whether it included the security updates at that point.
After the successful update check with
dnf, refreshing GNOME Software showed updates. At the time of writing, I know that dnf and PackageKit-on-Fedora use totally distinct cache directories. Therefore
dnf populating it's cache was not the direct cause for GNOME Software to work.