Categories

• Generic.

  Generic software used with platforms

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  There's the console in the bottom right corner of the browser window you will see the version. Check in the config.xml file. $ cd /var/lib/jenkins $ grep -i version config.xml <?xml version='1.1' encoding='UTF-8'?> <version>2.138.1</version> There's also the jenkins cli. Note: For demo purposes there's no authorization setup. $ java -jar jenkins-cli.jar -s http://localhost:8080/ version 2.138.1
• Cloud Platforms

  Cloud Platforms

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  AWS SAM web page: https://docs.aws.amazon.com/lambda/latest/dg/serverless_app.html AWS SAM installation page: https://docs.aws.amazon.com/serverless-application-model/latest/developerguide/serverless-sam-cli-install.html Link to npm package (aws-sam-local) also provides installation instructions: https://www.npmjs.com/package/aws-sam-local Set npm config: Set to true to suppress the UID/GID switching when running package scripts. If set explicitly to false, then installing as a non-root user will fail. $ npm config set unsafe-perm=true Install aws-sam-local package. $ sudo npm install -g aws-sam-local > aws-sam-local@0.2.11 postinstall /usr/local/lib/node_modules/aws-sam-local > go-npm install Downloading from URL: https://github.com/awslabs/aws-sam-local/releases/download/v0.2.11/sam_0.2.11_linux_amd64.tar.gz + aws-sam-local@0.2.11 added 67 packages from 61 contributors in 4.809s Verify version. $ sam --version A newer version of the AWS SAM CLI is available! Your version: 0.2.11 Latest version: 0.6.1 See https://github.com/awslabs/aws-sam-local for upgrade instructions sam version 0.2.11 Start the AWS SAM api. For demo template. $ sam local start-api A newer version of the AWS SAM CLI is available! Your version: 0.2.11 Latest version: 0.6.1 See https://github.com/awslabs/aws-sam-local for upgrade instructions 2018/10/27 08:16:07 Connected to Docker 1.37 2018/10/27 08:16:07 Runtime image missing, will pull.... 2018/10/27 08:16:07 Fetching lambci/lambda:nodejs8.10 image for nodejs8.10 runtime... nodejs8.10: Pulling from lambci/lambda 5be106c3813f: Pull complete e240967675e1: Pull complete 0fa7a4a5b472: Pull complete 11814d7919f1: Pull complete Digest: sha256:73639d4f85d8b173cb045e4acd9f3b049ed42830d538caceee8eb4f811a2cb59 Status: Downloaded newer image for lambci/lambda:nodejs8.10 Mounting index.handler (nodejs8.10) at http://127.0.0.1:3000/hello [POST] You can now browse to the above endpoints to invoke your functions. You do not need to restart/reload SAM CLI while working on your functions, changes will be reflected instantly/automatically. You only need to restart SAM CLI if you update your AWS SAM template.
• Linux.

  Redhat, Ubuntu, Centos, SUSE & all Linux Operating Systems

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  Read a good SHA outline here: https://en.wikipedia.org/wiki/Secure_Hash_Algorithms The "message" is what you put through a Cryptographic Hash Algorithm, and the result output is the "message digest". $ sha512sum slide1.png 08f7da4f5ef48c399d926618f0bfebbf6de70032f032355fe9fd39fc2f24cc827edb8bb12a8595260880891540ccaef84a7c511f598cde981ca7c05d6583940e slide1.png The output would got into a file like slide1.png.sha512, this is made public so anyone downloading the slide1.png file can check the slide1.png.sha value to see if it matches. If it does not match do not use the downloaded file.
• Unix

  Solaris, HP-UX & AIX

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  Link: https://h20392.www2.hpe.com/portal/swdepot/displayProductInfo.do?productNumber=HPUXIEXP1131 There is HPE product called HP-UX Internet Express for HP-UX 11i v3, which has a number of open source tools, one of which is sudo. The information on whether you need a license for downloading the software depot is not forthcoming and not easy to find on their website. The product appears to free, but as it is open source not support is provided.
• Virtualization - Containers - Hardware Partitioning

  Virtual Platforms & Containers

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  A liveness command to check the health of an application. It all very well having the container running in a pod but application checks need to be in place too. Let's break down the code below: create a container running the busybox image get it to execute command to create file wait 30 seconds remove the file (to trigger simulate a failure) wait 300 seconds. apiVersion: v1 kind: Pod metadata: labels: test: liveness name: liveness-exec spec: containers: - name: liveness image: k8s.gcr.io/busybox args: - /bin/sh - -c - touch /tmp/healthy; sleep 30; rm -rf /tmp/healthy; sleep 600 livenessProbe: exec: command: - cat - /tmp/healthy initialDelaySeconds: 3 periodSeconds: 5 Create the pod. $ kubectl create -f livenesscmd.yaml Looking at the events, you can see the pod being creating going into a unhealthy state, and then starting a new container. $ kubectl describe pod liveness Events: Type Reason Age From Message ---- ------ ---- ---- ------- Normal Scheduled 1m default-scheduler Successfully assigned liveness-exec to minikube Normal SuccessfulMountVolume 1m kubelet, minikube MountVolume.SetUp succeeded for volume "default-token-fpffp" Warning Unhealthy 33s (x3 over 43s) kubelet, minikube Liveness probe failed: cat: can't open '/tmp/healthy': No such file or directory Normal Pulling 2s (x2 over 1m) kubelet, minikube pulling image "k8s.gcr.io/busybox" Normal Pulled 2s (x2 over 1m) kubelet, minikube Successfully pulled image "k8s.gcr.io/busybox" Normal Created 2s (x2 over 1m) kubelet, minikube Created container Normal Killing 2s kubelet, minikube Killing container with id docker://liveness:Container failed liveness probe.. Container will be killed and recreated. Normal Started 1s (x2 over 1m) kubelet, minikube Started container As well as the Liveness command, there are two other types of Liveness checks, Liveness HTTP Request and TCP Liveness Probe.
• Learn

  Learn New Things

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  Note: This is for newer versions of linux. Linux meaning popular Linux Operating Systems. What is the difference between --list-unit-files and --list-units? list-unit-files [PATTERN...] List unit files installed on the system, in combination with their enablement state (as reported by is-enabled). If one or more PATTERNs are specified, only unit files whose name matches one of them are shown (patterns matching unit file system paths are not supported). list-units [PATTERN...] List units that systemd currently has in memory. This includes units that are either referenced directly or through a dependency, units that are pinned by applications programmatically, or units that were active in the past and have failed. By default only units which are active, have pending jobs, or have failed are shown; this can be changed with option --all. If one or more PATTERNs are specified, only units matching one of them are shown. The units that are shown are additionally filtered by --type= and --state= if those options are specified. $ systemctl list-unit-files --type=socket UNIT FILE STATE acpid.socket enabled apport-forward.socket enabled avahi-daemon.socket enabled cups.socket enabled dbus.socket static docker.socket enabled saned.socket disabled snapd.socket enabled ssh.socket disabled syslog.socket static systemd-fsckd.socket static systemd-initctl.socket static systemd-journald-audit.socket static systemd-journald-dev-log.socket static systemd-journald.socket static systemd-networkd.socket disabled systemd-rfkill.socket static systemd-udevd-control.socket static systemd-udevd-kernel.socket static uuidd.socket enabled 20 unit files listed. $ systemctl list-units --type=socket UNIT LOAD ACTIVE SUB DESCRIPTION acpid.socket loaded active running ACPID Listen Socket avahi-daemon.socket loaded active running Avahi mDNS/DNS-SD Stack Activation Socket cups.socket loaded active running CUPS Scheduler dbus.socket loaded active running D-Bus System Message Bus Socket docker.socket loaded active running Docker Socket for the API snapd.socket loaded active running Socket activation for snappy daemon syslog.socket loaded active running Syslog Socket systemd-fsckd.socket loaded active listening fsck to fsckd communication Socket systemd-initctl.socket loaded active listening /dev/initctl Compatibility Named Pipe systemd-journald-audit.socket loaded active running Journal Audit Socket systemd-journald-dev-log.socket loaded active running Journal Socket (/dev/log) systemd-journald.socket loaded active running Journal Socket systemd-rfkill.socket loaded active listening Load/Save RF Kill Switch Status /dev/rfki systemd-udevd-control.socket loaded active running udev Control Socket systemd-udevd-kernel.socket loaded active running udev Kernel Socket uuidd.socket loaded active listening UUID daemon activation socket LOAD = Reflects whether the unit definition was properly loaded. ACTIVE = The high-level unit activation state, i.e. generalization of SUB. SUB = The low-level unit activation state, values depend on unit type. 16 loaded units listed. Pass --all to see loaded but inactive units, too. As we are on the topic of sockets. The --list-sockets option: list-sockets [PATTERN...] List socket units currently in memory, ordered by listening address. If one or more PATTERNs are specified, only socket units matching one of them are shown. Here you can see the listening address and what service uses it. $ systemctl list-sockets -all LISTEN UNIT ACTIVATES /dev/rfkill systemd-rfkill.socket systemd-rfkill.service /run/acpid.socket acpid.socket acpid.service /run/apport.socket apport-forward.socket /run/avahi-daemon/socket avahi-daemon.socket avahi-daemon.service /run/cups/cups.sock cups.socket cups.service /run/snapd-snap.socket snapd.socket snapd.service /run/snapd.socket snapd.socket snapd.service /run/systemd/fsck.progress systemd-fsckd.socket systemd-fsckd.service /run/systemd/initctl/fifo systemd-initctl.socket systemd-initctl.service /run/systemd/journal/dev-log systemd-journald-dev-log.socket systemd-journald.service /run/systemd/journal/socket systemd-journald.socket systemd-journald.service /run/systemd/journal/stdout systemd-journald.socket systemd-journald.service /run/systemd/journal/syslog syslog.socket rsyslog.service /run/udev/control systemd-udevd-control.socket systemd-udevd.service /run/uuidd/request uuidd.socket uuidd.service /var/run/dbus/system_bus_socket dbus.socket dbus.service /var/run/docker.sock docker.socket docker.service audit 1 systemd-journald-audit.socket systemd-journald.service kobject-uevent 1 systemd-udevd-kernel.socket systemd-udevd.service 19 sockets listed.
• News

  News from various vendors

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  <p>The OpenSSL Management Committee (OMC) on behalf of the OpenSSL Project would like to formally express its thanks to the following organisations for agreeing to sponsor the next FIPS validation effort: Akamai Technologies, Blue Cedar, NetApp, Oracle, VMware.</p> <p>Four weeks ago, the OpenSSL team gathered with many of the organisations sponsoring the next FIPS module for a face-to-face meeting in Brisbane, Australia.</p> <p>We got a great deal accomplished during that week. Having most of the fips-sponsor organisations in the same location helps ensure that we are all on the same page for the decisions we need to make going forward.</p> <!-- more --> <p>The fips-sponsor gathering (hosted by Oracle, Brisbane) involved a diverse group of people:</p> <p><img src="https://www.openssl.org/blog/images/2018-08-27-fips-sponsors.png" title="" ></p> <p>It has been more than seven years since the commencement of the previous FIPS140 module work and many things have changed during that time, both in terms of requirements of the Cryptographic Module Validation Program (CMVP) and the OpenSSL code base.</p> <p>For the current validation effort, input and assistance from a small group (the five fips-sponsors) is essential to achieving the outcomes of the project in this area - a validated module that is usable by itself and can also form the foundation for other companies to perform their own validations for any areas where there are specific requirements outside the general scope.</p> <p>As the project moves from high-level design to detailed design, prototyping, development, testing, documentation and quality assurance, we plan to make information available to the OpenSSL community for review and comment - as the next FIPS140 module will be substantially different to the previous approaches.</p> <p>We are mindful of the end-of-life date for OpenSSL-1.0.2 (31-Dec-2019) and the end-of-life (sunset date) of the existing OpenSSL FIPS Object Object (29-Jan-2022) and our objective remains to have a validated cryptographic module in place well before 31-Dec-2019.</p><br/><br/><a href="https://www.openssl.org/blog/blog/2018/09/25/fips/">https://www.openssl.org/blog/blog/2018/09/25/fips/</a>
• Notebook
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  Link: https://en.wikipedia.org/wiki/Unix_time A lot of us do not know what epoch means? In this context the definition is: A point of time distinguished by a particular event or state of affairs; a memorable date. It is the number of seconds passed since beginning of 00:00:00 UTC Thursday 1, January 1970 minus the number of leap seconds. This applies to all Unix-like systems.
• Hall Of Fame

  Famous People In Information Technology

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  Links: https://en.wikipedia.org/wiki/Jon_Postel Obituary post on RFC's by Vint Cerf: https://www.rfc-editor.org/rfc/pdfrfc/rfc2468.txt.pdf Jon Postel (1943 - 1998), For 3 decades RFC Editor, Involvement protocols which made The Internet possible, protocols like SMTP & TCP/IP are very much a part of The Modern Internet. He also the founder of the Internet Assigned Numbers Authority (IANA). Then later, a key figure in the Internet Corporation for Assigned Names and Numbers (ICANN) "An Internet Pioneer!" Jonathan Bruce Postel. a.k.a "God Of The Internet" by the media. "The Internet should not be managed by any government, national or multinational." "Group discussion is very valuable; group drafting is less productive."
• Comments & Feedback

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  Hello. This area is for comments and feedback about the services & website only.