Re: Bootstraping a Node With a Newer Version

2017-05-17 Thread Shalom Sagges
​So you are not upgrading the kernel, you are upgrading the OS. Sorry Daemeon, my bad. I meant the OS :-) So what would you recommend, replace a node with a new OS node with -Dcassandra.replace_address (never tried it before), or try to format the root directory of the existing node, without

Re: Bootstraping a Node With a Newer Version

2017-05-17 Thread daemeon reiydelle
​So you are not upgrading the kernel, you are upgrading the OS. Not what you asked about. Your devops team is right. However, Depending on what is using python, the new version of python may break older scripts (I do not know, mentioning this, testing required?) W ​hen I am doing an OS upgrade

Re: Bootstraping a Node With a Newer Version

2017-05-17 Thread Dor Laor
We've done such in-place upgrade in the past but not for a real production. However you're MISSING the point. The root filesystem along with the entire OS should be completely separated from your data directories. It should reside in a different logical volume and thus you can easily change the

Re: Bootstraping a Node With a Newer Version

2017-05-17 Thread Shalom Sagges
Our DevOPS team told me that their policy is not to perform major kernel upgrades but simply install a clean new version. I also checked online and found a lot of recommendations *not *to do so as there might be a lot of dependencies issues that may affect processes such as yum. e.g.

Re: Bootstraping a Node With a Newer Version

2017-05-16 Thread daemeon reiydelle
What makes you think you cannot upgrade the kernel? “All men dream, but not equally. Those who dream by night in the dusty recesses of their minds wake up in the day to find it was vanity, but the dreamers of the day are dangerous men, for they may act their dreams with open eyes, to make it

Re: Bootstraping a Node With a Newer Version

2017-05-16 Thread Jeff Jirsa
On 2017-05-16 05:27 (-0700), Shalom Sagges wrote: > Hi All, > > Hypothetically speaking, let's say I want to upgrade my Cassandra cluster, > but I also want to perform a major upgrade to the kernel of all nodes. > In order to upgrade the kernel, I need to reinstall the

Re: Bootstraping a Node With a Newer Version

2017-05-16 Thread Mateusz Korniak
On Tuesday 16 of May 2017 15:27:11 Shalom Sagges wrote: > My question is this, after reinstalling the server with the new kernel, can > I first install the upgraded Cassandra version and then bootstrap it to the > cluster? No. Bootstrap/repair may/will not work between nodes with different major

Bootstraping a Node With a Newer Version

2017-05-16 Thread Shalom Sagges
Hi All, Hypothetically speaking, let's say I want to upgrade my Cassandra cluster, but I also want to perform a major upgrade to the kernel of all nodes. In order to upgrade the kernel, I need to reinstall the server, hence lose all data on the node. My question is this, after reinstalling the