Archive for August, 2021

yum: show pkg versions, install certain version

Tuesday, August 31st, 2021

Show available versions of ‘ngcp-rtpengine’ package from repository:

yum --showduplicates list available ngcp-rtpengine

Show available versions from repository of packages which name starts with ‘ngcp-rtpengine’:

yum --showduplicates list available ngcp-rtpengine*

… will result:

ngcp-rtpengine.x86_64 6.5.2-1.el7 repo_name
ngcp-rtpengine.x86_64 6.5.3-1.el7 repo_name
ngcp-rtpengine-dkms.noarch 6.5.2-1.el7 repo_name
ngcp-rtpengine-dkms.noarch 6.5.3-1.el7 repo_name

Install certain version:

yum install ngcp-rtpengine-8.5.3-3.el7

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CentOS: remove old/unused kernels

Tuesday, August 24th, 2021

Install ‘yum-utils’ package.

Before:

voip ~ # uname -sr
Linux 3.10.0-327.36.2.el7.x86_64
voip ~ # rpm -q kernel
kernel-3.10.0-327.el7.x86_64
kernel-3.10.0-327.10.1.el7.x86_64
kernel-3.10.0-327.18.2.el7.x86_64
kernel-3.10.0-327.36.2.el7.x86_64


voip ~ # df -h | grep boot
/dev/md126p1 283M 212M 52M 81% /boot

Let’s leave 2 kernels, others will be removed. Use ‘package-cleanup’ tool:

voip ~ # package-cleanup --oldkernels --count=2
...

Result:

voip ~ # uname -sr
Linux 3.10.0-327.36.2.el7.x86_64
voip ~ # rpm -q kernel
kernel-3.10.0-327.18.2.el7.x86_64
kernel-3.10.0-327.36.2.el7.x86_64


voip ~ # df -h | grep boot
/dev/md126p1 283M 127M 138M 48% /boot

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RTPEngine set weight

Monday, August 23rd, 2021

Undocumented feature –
how to configure weight for a rtpengine set (default value is 1):

modparam("rtpengine", "rtpengine_sock", "udp:localhost:12222=2")

http://lists.opensips.org/pipermail/users/2021-August/045084.html

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openbsdrouterguide

Thursday, August 5th, 2021

Found a very nice website https://openbsdrouterguide.net/

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