Proxmox 5.0 is now available

Proxmox 5.0 is now available

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Category : Tech News

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proxmox logo gradToday, the Proxmox VE team have released a new version of Proxmox, incrementing the major version to 5.0!

The new version packs in a raft of new features, the headline being the new Replicated Storage feature which enables batch style synchronisation of local storage volumes across servers.

You can download the ISO from https://www.proxmox.com/en/downloads/item/proxmox-ve-5-0-iso-installer

Highlights of the 5.0 release:

  • Based on Debian Stretch 9.0
  • Kernel 4.10.15
  • QEMU 2.9
  • LXC: update to 2.0.8
  • New asynchronous Storage Replication feature (needs ZFS, technology preview)
  • New/updated LXC templates (Debian, Ubuntu, CentOS, Fedora, OpenSUSE, Arch Linux, Gentoo and Alpine)
  • Updated/improved noVNC console]
  • Ceph v12.1.0 Luminous (technology preview), packaged by Proxmox
  • Live migration with local storage
  • GUI improvements
    • USB und Host PCI address visibility
    • improved bulk and filtering options
  • Improved installation ISO
  • Importing Qemu/KVM_Virtual_Machines#_importing_virtual_machines_from_foreign_hypervisors
  • Improved reference documentation with screenshots
  • Countless bug fixes and package updates

Upgrade

Before updating, make sure all your VM’s have been stopped, both LXC and KVM. Ensure you have the required repository entries for apt. You’ll either need a valid license key or to add the less stable pve-no-subscription repository.

Update your apt for Debian, edit /etc/apt/sources.list and replace it with:

deb http://ftp.at.debian.org/debian stretch main contrib

# security updates
deb http://security.debian.org stretch/updates main contrib

And your Proxmox repository source /etc/apt/sources.list.d/pve-enterprise.list to the below. See Proxmox 3.1 package/ updates manager (this also works for version 5.x) for more information.

deb https://enterprise.proxmox.com/debian/pve stretch pve-enterprise

Run the below commands on each server in your cluster.

apt-get update
apt-get dist-upgrade

Restart all Proxmox servers to complete the installation.

Apt-get error: E: The method driver /usr/lib/apt/methods/https could not be found

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Category : How-to

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I’ve been getting the following error when using apt-get update with Debian Wheezy recently.

E: The method driver /usr/lib/apt/methods/https could not be found.

It seems that apt-get only supports HTTP connections by default, and throws an error with any HTTPS URLs.  You’ll likely see this error message if you add a new apt source URL that starts with https. What’s most annoying is that apt doesn’t simply ignore the HTTPS URL when updating the local cache, it actually stops all updates regardless of URL schema.

apt-get update
E: The method driver /usr/lib/apt/methods/https could not be found.

Luckily the fix is easy and requires an additional apt package to handle the SSL URLs. Run the below command to install the apt-transport-https package to enable apt to use HTTPS URL lists.

apt-get install apt-transport-https

Once this is installed, apt should function and update its local cache from your apt lists.

Manually downloading Java For Use With Webupd8’s apt-get Package

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Category : How-to

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java-logoOracle Java is one of the biggest problems in life. That’s just a fact. Half of it is the fact that you have to download it directly from Oracle each time, quarter of it is the almost daily updates (compounded by the first problem), and the remainder is dealing with the fact that the first problem is there by design.

Thankfully the boys and girls over at Webupd8 have created and maintain an apt-get deployed version of Oracle Java that handles initial setup and future updates. The apt package doesn’t actually contain the Oracle Java binaries, because that’s against Oracle’s TOC’s, but it contains a script that downloads it for you – all behind the scenes.

Sometimes Corporate networks block access to Oracle’s download servers and therefore block access to you installing Oracle Java by this method. Except…

You can manually download the JDK from Oracle and copy it to the required machine in the apt cache directory. When you then run the apt-get command the installer will realise that the tar.gz containing the Java binaries is available and won’t need to download it. You’ll still need the internet to download the apt package, but you won’t need to access oracle.com.

First off, make the relevant cache directory for use with your version of java. This example assumes Java 8.

mkdir /var/cache/oracle-jdk8-installer

Copy the latest version of Java into the above cache directory. This assumes that the download is in your current directory and is Java version 8 update 91.

cp jdk-8u91-linux-x64.tar.gz /var/cache/oracle-jdk8-installer/jdk-8u91-linux-x64.tar.gz

Finally install the required version of Java.

apt-get install oracle-java8-set-default

You’ll see the message Installing from local file as part of the installation indicating the installer hasn’t needed to download the Java binaries from Oracle.

Reading package lists... Done
Building dependency tree
Reading state information... Done
oracle-java8-set-default is already the newest version.
0 upgraded, 0 newly installed, 0 to remove and 3 not upgraded.
2 not fully installed or removed.
After this operation, 0 B of additional disk space will be used.
Do you want to continue? [Y/n] y
Setting up oracle-java8-installer (8u92+8u91arm-2~really8u91~webupd8~0) ...
Installing from local file /var/cache/oracle-jdk8-installer/jdk-8u91-linux-x64.tar.gz

 

Install DataStax Cassandra 3 on Debain/ Ubuntu

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Category : How-to

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datastax-logoThe following process will install the DataStax distribution of Cassandra on any Debian based system, such as Debian or Ubuntu. We’ll use the official DataStax apt repositories to install Cassandra using apt-get.

Cassandra is written in Java and the latest version (at the time of writing) of Cassandra requires Java 8. You can use either OpenJDK or visit my Oracle Java post on installing the Oracle distribution of Java 8.

Once you have Java 8 installed and confirmed you can continue to install Cassandra. Use java -version on the command line to check your Java version.

java -version
java version "1.8.0_91"
Java(TM) SE Runtime Environment (build 1.8.0_91-b14)
Java HotSpot(TM) 64-Bit Server VM (build 25.91-b14, mixed mode)

Install DataStax Cassandra 3.4

Note: You can use the simple Bash script to install Java 8 and a single instance of Cassandra found here.

The first step to installing Cassandra with apt is to add the DataStax Cassandra repository and repository key to your local apt list. Run the following command to add the required repository and update your local apt cache. Change the version 3.4 on the first line to match the version you’d like to install.

echo "deb http://debian.datastax.com/datastax-ddc 3.4 main" | tee -a /etc/apt/sources.list.d/cassandra.sources.list
curl -L https://debian.datastax.com/debian/repo_key | apt-key add -
apt-get update

Once you’re updated then run the install command and begin the Cassandra install.

apt-get install datastax-ddc

Debian’s policy is for software to be available locally after the install has completed and therefore your Cassandra instance will be running as a single stand alone node.

You can run the nodetool to check the install has completed and that the Cassandra instance is available.

nodetool status

Datacenter: datacenter1
=======================
Status=Up/Down
|/ State=Normal/Leaving/Joining/Moving
--  Address     Load       Tokens       Owns (effective)  Host ID                               Rack
UN  10.10.10.10 1.29 MB    256          100.0%            c25d396e-fa09-4bf6-837d-676d57cd7987  rack1

The next step is to configure your Cassandra instance by editing the yaml config file /etc/cassandra/cassandra.yaml but that’s a blog post for another day.

DataStax Cassandra 3.2 Bash Install Script

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Category : Supporting Scripts

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The below script installs the DataStax distribution of Cassandra 3.2.x and the latest Oracle Java 8 on Debian. Copy and paste the script into a file called install_cassandra.sh and execute it as root.

Change the version 3.2 on line 12 to match the version you’d like to install.

#!/bin/bash
set -e

apt-get update
apt-get install -y wget curl

echo "Installing repos"
echo "deb http://ppa.launchpad.net/webupd8team/java/ubuntu xenial main" | tee /etc/apt/sources.list.d/webupd8team-java.list
echo "deb-src http://ppa.launchpad.net/webupd8team/java/ubuntu xenial main" | tee -a /etc/apt/sources.list.d/webupd8team-java.list
apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys EEA14886

echo "deb http://debian.datastax.com/datastax-ddc 3.2 main" | tee -a /etc/apt/sources.list.d/cassandra.sources.list
curl -L https://debian.datastax.com/debian/repo_key | apt-key add -


echo "Installing binaries"
apt-get update
echo oracle-java7-installer shared/accepted-oracle-license-v1-1 select true | /usr/bin/debconf-set-selections
apt-get install -y oracle-java8-installer datastax-ddc

echo "Complete"

Then connect to the local Cassandra instance run the cqlsh tool.

cqlsh

Connected to Test Cluster at 127.0.0.1:9042.
[cqlsh 5.0.1 | Cassandra 3.2.1 | CQL spec 3.4.0 | Native protocol v4]
Use HELP for help.
cqlsh>

 

Automated Bash MongoDB 3.2 Install Script for Debian/ Ubuntu

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Category : How-to

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mongodb-logoMongoDB is one of the leading noSQL breeds of database that’s been growing in popularity in recent years. The database is available in a ‘community edition’ that’s available for all to use freely.

The database setup and install is mostly straightforward however there are a few steps you have to take to get a MongoDB instance up and running.

The binaries aren’t shipped by the common Linux distributions so you’ll need to add the apt repositories hosted by mongodb.org. After installing the binaries there are a few config options that can be helpful to start with that are not contained in the default MongoDB install.

First off, create a file on your server called install_mongo.sh and copy the content of the script into it found in the below link.

MongoDB 3.2 Bash Install Script

vi install_mongo.sh

Then make the script executable and run it.

chmod +x install_mongo.sh
./install_mongo.sh

Once the script completes you’ll be able to connect to your MongoDB instance with admin/ admin.

mongo admin -u admin -p admin

MongoDB shell version: 3.2.7
connecting to: admin
rs1:PRIMARY>

What the MongoDB install script does

The following is a brief outline of the steps the script takes:

  1. Add the apt repository from mongodb.org and associated key.
  2. Install the full mongo-org package containing these packages: mongodb-org-server, mongodb-org-mongos, mongodb-org-shell, mongodb-org-tools.
  3.  Add a basic config file that:
    1. Enforces the wiredTiger storage engine.
    2. Enables remote access by listening on ALL interfaces.
    3. Enables replication, even if it’s just a stand alone node.
    4. Enables user authentication.
  4. Initiates the server as a replication cluster.
  5. Adds a user for administration called admin with password admin.

 

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