initial RPM spec (#1)

[zackse]

This adds a new make target rpm. Note: the rpmdevtools package is required for rpmbuild and spectool.

I did not include a systemd unit or crontab (from the SysV install script). Do you have a preference? We can make the systemd unit conditional in the RPM spec if desired.

$ make rpm
mkdir -p /home/zackse/rpmbuild/SOURCES
spectool --get-files --sourcedir memdisk-cloudwatch.spec
Getting https://github.com/AndrianBdn/memdisk-cloudwatch/releases/download/v0.9.2/memdisk-cloudwatch-x86_64.gz to /home/zackse/rpmbuild/SOURCES/memdisk-cloudwatch-x86_64.gz
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100 2314k  100 2314k    0     0  1767k      0  0:00:01  0:00:01 --:--:-- 2227k
rpmbuild -ba  memdisk-cloudwatch.spec
...
Wrote: /home/zackse/rpmbuild/RPMS/x86_64/memdisk-cloudwatch-0.9.2-1.el7.centos.x86_64.rpm

$ rpm -qplv /home/zackse/rpmbuild/RPMS/x86_64/memdisk-cloudwatch-0.9.2-1.el7.centos.x86_64.rpm
-rwxr-xr-x    1 root    root                  4970064 Oct 17 08:33 /usr/bin/memdisk-cloudwatch

[AndrianBdn]

Hi! Thank you for the pull request. I don't have any preferences, but rpm package still needs to install the service in the system. This is the expected behavior of virtually any rpm(or deb) package.

So... if this is RPM for CentOS 6, it must add SysV-style init scrips (I don't think that rpm packages ever modify user's crontab). If it is RPM for CentOS 7 is must include systemd scripts. Great if it can be both.

[zackse]

For now, I added the systemd unit -- my standard build environment is CentOS 7 these days. If we need to support both systemd and SysV init, we'd probably want additional packages in the RPM with suffixes -systemd and/or -sysv for example, as is done in the epel clamav package (https://src.fedoraproject.org/rpms/clamav/blob/master/f/clamav.spec).

I'm not sure if it's worth the effort, though, since systemd seems to be taking over...

[AndrianBdn]

Cool. Please add a few words about this 'make rpm' target to README.md. Note that it requires systemd. Also I find it a bit strange that we're downloading binary from GitHub release here, can we use a local binary? Thanks.