Author name: Dan Langille

Getting logstash-forwarder working

6 Comments / logstash / By /

I’m doing some work with logstash-forwarder as part of a consolidation effort to get all the logs into one place, and using logstash to put them into Elasticsearch. logstash-fowarder requires the Go programming language, and that will be our first step. Installing go, the programming language I am assuming you are installing go at /usr/local; adjust the path to suit. I am installing from source because older versions of go will not work. […]

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Are FreeBSD jails being shutdown properly?

1 Comment / FreeBSD, Open Source / By /

This was done on FreeBSD 9.2-RELEASE-p10. After my boss told me about losing qmail logs from a jail some time ago when a server was shutdown, I started looking at some tests to ensure that jails are shutdown properly. I am beginning to suspect they are not. Consider this test. I added this to /usr/local/etc/rc.d/nullmailer in the jail named ‘testing’: echo $(date) $0 $1 >> /var/log/shutdown.log And then did this on the jail

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ssh key management

Leave a Comment / ansible / By /

Background I was asked to comment on the following: Our software is built and maintained by about 20 engineers, and runs in production on dozens of servers in a remote data center. One problem we frequently face is identity and access management on these servers – our engineers occasionally need to directly access the servers (via SSH) to debug an issue or perform maintenance, but often find that their key is not installed

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Want 8.3 in a poudriere jail? Nope.

Leave a Comment / Jails, poudriere / By /

I tried this today, creating an 8.3-RELEASE jail for poudriere: $ sudo poudriere jail -c -v 8.3-RELEASE -j releng_8_3 ====>> Creating releng_8_3 fs… done ====>> Fetching sets for FreeBSD 8.3-RELEASE amd64 fetch: ftp://ftp.freebsd.org/pub/FreeBSD/releases/amd64/8.3-RELEASE/base/CHECKSUM.SHA256: File unavailable (e.g., file not found, no access) fetch: ftp://ftp.freebsd.org/pub/FreeBSD/releases/amd64/8.3-RELEASE/base/CHECKSUM.SHA256: File unavailable (e.g., file not found, no access) ====>> Error: Failed to fetch from ftp://ftp.freebsd.org/pub/FreeBSD/releases/amd64/8.3-RELEASE/base/CHECKSUM.SHA256 ====>> Error while creating jail, cleaning up. ====>> Removing releng_8_3 jail… done It failed. But

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Monitoring temperature

2 Comments / Network monitoring / By /

Earlier today, I was reminded of a old series of tweets regarding temperature. That led me to this to a FreeBSD Forums post which showed me this interesting bit of information. I draw your attention to the two hw.acpi.thermal values near the top. Those may well represent the ambient room temperature, more or less. A little shell script. Some graphing. Bob’s yer uncle. # kldload coretemp # sysctl -a | grep -i “temp”.

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OpenVPN clients don’t react well when the server goes down

Leave a Comment / Open Source, OpenVPN / By /

I had a power failure at home tonight. The clients did not react well to the outage. They aren’t at home. They’re out there on the internets. Jul 9 01:02:49 tallboy openvpn[40792]: UDPv4 link local (bound): [AF_INET]10.233.228.194:1194 Jul 9 01:03:51 tallboy openvpn[40792]: UDPv4 link local (bound): [AF_INET]10.233.228.194:1194 Jul 9 01:04:53 tallboy openvpn[40792]: UDPv4 link local (bound): [AF_INET]10.233.228.194:1194 Jul 9 01:05:56 tallboy openvpn[40792]: UDPv4 link local (bound): [AF_INET]10.233.228.194:1194 Jul 9 01:06:58 tallboy openvpn[40792]: UDPv4

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Running multiple concurrent poudriere builds

Leave a Comment / FreeBSD, Open Source, poudriere / By /

I’m running multiple concurrent poudriere builds on slocum. I see no problems doing this. [dan@slocum:~] $ uptime 9:51PM up 1 day, 6:37, 8 users, load averages: 30.38, 22.58, 11.87 [dan@slocum:~] $ ps auwx | grep sudo root 8877 0.0 0.0 48804 2616 1 I+ 9:45PM 0:00.01 sudo /usr/local/bin/poudriere bulk -j 92amd64 -f /usr/local/etc/poudriere.d/buildlists/knew -z knew root 61003 0.0 0.0 48804 2620 2 I+ 9:46PM 0:00.01 sudo /usr/local/bin/poudriere bulk -j 92amd64 -f /usr/local/etc/poudriere.d/buildlists/slocum -z

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FreeBSD custom port patches when using poudriere

3 Comments / poudriere / By /

I have a custom patch for Nagios. I use poudriere for building my FreeBSD ports. EDIT: 2023-03-25 I have change the local for my patch files using a hook. See poudriere hooks – I am no longer using /usr/ports/distfiles/local-patches>; instead, I’m using /usr/local/etc/poudriere.d/local-patches. How can I combine the two? I asked that question on the FreeBSD Ports Mailing list. The answer came via IRC, from bsd-x. He introduced me to the concept of

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poudriere: options, it’s all about options

Leave a Comment / poudriere / By /

Last night, and again this morning, I thought my inbox was rather light. When I checked Nagios, I found out why. I saw two mail servers: nyi-vpn check_postfix_queue CRITICAL 06-10-2014 12:12:38 0d 12h 51m 40s 4/4 96 mail(s) in queue supernews-vpn check_postfix_queue CRITICAL 06-10-2014 12:11:10 0d 10h 48m 8s 4/4 124 mail(s) in queue It seems we have a problem. Checking the mail logs for one of those servers, I see the reason:

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