Building ELK on CentOS 7
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@Dashrender said:
@scottalanmiller said:
Half a terabyte is a good starting point for disk space.
So much for me trying it - I might be lucky if I have 100 GB available for this.
You can do that for seeing what it looks like. 20GB will work for a very tiny test workload. But very tiny.
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Just tested on a fresh build and it works BEAUTIFULLY. I put it into a script and ran it instead of going line by line, worked on the first try, no problems. It stops in the middle and asks for a password, that could be moved to the end or something, but it works just fine and isn't so slow that you'd want to walk away. So I added a BASH script header. If you want, just copy/paste into a text file and run it. Boom, done. Working ELK in a minute.
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@scottalanmiller so what do you setup your disk partitioning like in CentOS 7?
On a minimal install left to automatic, if you use a larger drive, it will create a separate partition for all the space after 50gb.
this is highly annoying because I created a 127GB drive (default in Hyper-V) and now 50GB is separate from all the rest.
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like this
[root@elk ~]# df -h Filesystem Size Used Avail Use% Mounted on /dev/mapper/centos_elk-root 50G 855M 50G 2% / devtmpfs 906M 0 906M 0% /dev tmpfs 916M 0 916M 0% /dev/shm tmpfs 916M 8.3M 907M 1% /run tmpfs 916M 0 916M 0% /sys/fs/cgroup /dev/sda2 494M 98M 396M 20% /boot /dev/sda1 200M 9.5M 191M 5% /boot/efi /dev/mapper/centos_elk-home 75G 33M 75G 1% /home tmpfs 184M 0 184M 0% /run/user/0 [root@elk ~]# -
You should at least tell the user that you are asking for the kibana password.
htpasswd -c /etc/nginx/htpasswd.users kibanauser -
I had this error.
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Looks like maybe you forgot to start firewalld?
% Total % Received % Xferd Average Speed Time Time Time Current Dload Upload Total Spent Left Speed 100 814 100 814 0 0 1370 0 --:--:-- --:--:-- --:--:-- 1372 { "acknowledged" : true } FirewallD is not running FirewallD is not running [root@elk ~]# yum install firewalld Loaded plugins: fastestmirror Loading mirror speeds from cached hostfile * base: mirror.oss.ou.edu * epel: fedora-epel.mirror.lstn.net * extras: centos.mirrors.wvstateu.edu * updates: centos.mirrors.wvstateu.edu Package firewalld-0.3.9-14.el7.noarch already installed and latest version Nothing to do [root@elk ~]# systemctl start firewalld [root@elk ~]# systemctl status firewalld ā firewalld.service - firewalld - dynamic firewall daemon Loaded: loaded (/usr/lib/systemd/system/firewalld.service; enabled; vendor preset: enabled) Active: active (running) since Tue 2016-02-23 23:55:11 CST; 14s ago Main PID: 11482 (firewalld) CGroup: /system.slice/firewalld.service āā11482 /usr/bin/python -Es /usr/sbin/firewalld --nofork --nopid Feb 23 23:55:09 elk systemd[1]: Starting firewalld - dynamic firewall daemon... Feb 23 23:55:11 elk systemd[1]: Started firewalld - dynamic firewall daemon. [root@elk ~]# -
Yeah, you set it to install, but you never start or enable it.
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Line 109 needs commented out.
add this right after the yum install to fix the firewall.
yum -y install wget firewalld epel-release systemctl enable firewalld systemctl start firewalld yum -y install nginx httpd-tools unzipI would just remove line 109 it serves no purpose.
Edit: Some dumbass forgot to snapshot the image so he could repeat the install...
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Why lock out with .htaccess? There is no hint what is needed to log in here.
I hate this level of authentication.
Using kibanauser and the password I chose, results in Kibana setup.
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@JaredBusch said:
@scottalanmiller so what do you setup your disk partitioning like in CentOS 7?
If I'm doing this for product, I do 20GB for the OS and 200GB+ on a second VHD for the data. I put it all under LVM and make a XFS filesystem on the secondary mount and mount it to data and make a symlink for the Elasticsearch database directory into there.
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@JaredBusch said:
Why lock out with .htaccess? There is no hint what is needed to log in here.
It's how Digital Ocean does it as well. Kibana doesn't have a built in authentication scheme that I know of. HTAccess is very simple for someone to just get started.
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And simple to remove when you want to move to something else.
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@JaredBusch said:
Line 109 needs commented out.
add this right after the yum install to fix the firewall.
yum -y install wget firewalld epel-release systemctl enable firewalld systemctl start firewalld yum -y install nginx httpd-tools unzipI would just remove line 109 it serves no purpose.
Edit: Some dumbass forgot to snapshot the image so he could repeat the install...
Thanks. That was formatting I had originally put in before scripting it.
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@scottalanmiller said:
@JaredBusch said:
@scottalanmiller so what do you setup your disk partitioning like in CentOS 7?
If I'm doing this for product, I do 20GB for the OS and 200GB+ on a second VHD for the data. I put it all under LVM and make a XFS filesystem on the secondary mount and mount it to data and make a symlink for the Elasticsearch database directory into there.
SO this mean you need to make one of your linux admin setrups on drive settings because that is not what CentOS does by dfault.
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@JaredBusch said:
@scottalanmiller said:
@JaredBusch said:
@scottalanmiller so what do you setup your disk partitioning like in CentOS 7?
If I'm doing this for product, I do 20GB for the OS and 200GB+ on a second VHD for the data. I put it all under LVM and make a XFS filesystem on the secondary mount and mount it to data and make a symlink for the Elasticsearch database directory into there.
SO this mean you need to make one of your linux admin setrups on drive settings because that is not what CentOS does by dfault.
Would CentOS do what Scott does if you had two drives you provide CentOS to use? i.e. a 20 GB and a 200+ GB one? Would CentOS install the OS and everything fully on the 20, and then just mount the 200 on some point?
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@Dashrender said:
@JaredBusch said:
@scottalanmiller said:
@JaredBusch said:
@scottalanmiller so what do you setup your disk partitioning like in CentOS 7?
If I'm doing this for product, I do 20GB for the OS and 200GB+ on a second VHD for the data. I put it all under LVM and make a XFS filesystem on the secondary mount and mount it to data and make a symlink for the Elasticsearch database directory into there.
SO this mean you need to make one of your linux admin setrups on drive settings because that is not what CentOS does by dfault.
Would CentOS do what Scott does if you had two drives you provide CentOS to use? i.e. a 20 GB and a 200+ GB one? Would CentOS install the OS and everything fully on the 20, and then just mount the 200 on some point?
Than answer is not by default. It tries to make it's own magic.
You can see here I created a 20gb and a 200GB vhdx and told the install to handle it all for me.
Guess what, you still end up with a 50GB and a 170GB partitions scheme
[root@elk ~]# df -h Filesystem Size Used Avail Use% Mounted on /dev/mapper/centos_elk-root 50G 882M 50G 2% / devtmpfs 906M 0 906M 0% /dev tmpfs 916M 0 916M 0% /dev/shm tmpfs 916M 8.3M 907M 1% /run tmpfs 916M 0 916M 0% /sys/fs/cgroup /dev/sda2 494M 99M 395M 21% /boot /dev/sda1 200M 9.5M 191M 5% /boot/efi /dev/mapper/centos_elk-home 168G 33M 168G 1% /home tmpfs 184M 0 184M 0% /run/user/0 [root@elk ~]# -
CentOS 7 has a thing for 50GB root mounts.
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Yeah, the defaults suck a bit.
