I try to use ssh command on Windows 10. servers Try to create ssh key on windows But I got failed message as follows PS C:\powershell> ssh-keygen.exe -q -b 2048 -t rsa -N "" -C "" -f pm01_rsa Saving key "pm01_rsa" failed: passphrase is too…

ssh on Win10

try Nginx ref. https://serverfault.com/questions/760569/sent-http-variables-disappear-in-nginx-in-some-circumstances client -> nginx -> httpd apache httpd docker images [root@vm01 work_a]# docker images REPOSITORY TAG IMAGE ID CREATED SIZE…

try nginx for reverse proxy

I select centos 7.x iso file from below site. http://isoredirect.centos.org/centos/7/isos/x86_64/

I try to create VM(KVM) of CentOS 7.x.

ref Installing kubeadm https://kubernetes.io/docs/setup/production-environment/tools/kubeadm/install-kubeadm/ Kubernetes on CentOS7 2019年06月04日に更新 https://qiita.com/nagase/items/15726e37057e7cc3b8cd VM node ip hostname role host01 17…

try to install kubernetes 1.15 using kubeadm

I created this script to add host/host group by Zabbix API. #!/bin/bash set -x ### config user_name=user01 user_pass=pass_string zabbix_url=http://localhost/zabbix/api_jsonrpc.php header="Content-Type: application/json-rpc" # -------------…

try to use zabbix api on bash

bash complete https://docs.openstack.org/python-openstackclient/pike/cli/command-objects/complete.html [root@localhost ~(keystone_admin)]# openstack complete | sudo tee /etc/bash_completion.d/osc.bash_completion > /dev/null [root@localhost…

openstack bash complete

After installation of OpenStack, akai-tsuki.hatenablog.com Network setting I use network 1 to access to VM in OpenStack. and I connect to server via network 2 by ssh. all_in_one_network [root@localhost ~]# cd /etc/sysconfig/network-scripts…

network setting for openstack

prepare [root@localhost ~]# yum install centos-release-openstack-rocky.noarch [root@localhost ~]# cat /etc/environment LANG=en_US.utf-8 LC_ALL=en_US.utf-8 [root@localhost ~]# [root@localhost ~]# yum update -y [root@localhost ~]# systemctl …

install openstack by packstack in CentOS 7

I am interested in kubesquash. github.com

I will check kubesquash.

Install Dnsmasq [root@cent7devops ~]# yum -y install dnsmasq initial state after yum install [root@cent7devops ~]# grep -v -e "^#.*" -e "^$" /etc/dnsmasq.conf conf-dir=/etc/dnsmasq.d,.rpmnew,.rpmsave,.rpmorig [root@cent7devops ~]# [root@ce…

try dnsmasq

option "-t" and "-f" ex. 1 [root@localhost ~]# nmcli -f ipv4.addresses c s enp0s3 ipv4.addresses: 172.16.10.111/24 [root@localhost ~]# ex. 2 [root@localhost ~]# nmcli -t -f ipv4.addresses c s enp0s3 ipv4.addresses:172.16.10.111/24 [root@lo…

I try to use opetion of "nmcli" command.

I refer to the page below. https://github.com/coredns/deployment/blob/master/systemd/coredns.service add coredns user [root@cent7devops ~]# useradd coredns -s /sbin/nologin -c 'coredns user' create service file for systemd [root@cent7devop…

systemd configuration for coredns

Before this post, please see try to use CoreDNS - AKAI TSUKI use proxy plugin of CoreDNS - AKAI TSUKI I'd like to perform name resolution(search ipaddress) by referring hosts file. ref. https://coredns.io/plugins/hosts/ I prepare hosts fil…

use hosts plugin of CoreDNS

Before post, please see try to use CoreDNS - AKAI TSUKI I configure Corefile to use proxy. ref. https://coredns.io/plugins/proxy/ [root@cent7devops ~]# cat Corefile . { proxy . 8.8.8.8:53 errors log } [root@cent7devops ~]# I need to send "…

use proxy plugin of CoreDNS

I get CoreDNS binary file. [root@cent7devops ~]# wget https://github.com/coredns/coredns/releases/download/v1.2.0/coredns_1.2.0_linux_amd64.tgz *snip* [root@cent7devops ~]# ls coredns_1.2.0_linux_amd64.tgz coredns_1.2.0_linux_amd64.tgz [ro…

try to use CoreDNS

I create playbook file "docker_install.yml" to install docker-ce. --- - name: Install Docker hosts: grp_node tasks: - name: Install package needed for docker-ce yum: name: '{{ item }}' state: installed with_items: - "yum-utils" - "device-m…

Install docker using ansible.

Please see this url. https://github.com/ansible/awx/blob/devel/INSTALL.md I have already installed docker-ce. [root@cent7devops installer]# docker version Client: Version: 18.06.0-ce API version: 1.38 Go version: go1.10.3 Git commit: 0ffa8…

install AWX on CentOS 7.

about ansible version check version. # ansible --version ansible 2.6.1 config file = /etc/ansible/ansible.cfg configured module search path = [u'/root/.ansible/plugins/modules', u'/usr/share/ansible/plugins/modules'] ansible python module …

use Ansible vault.

Before this page, please check this post. I'd like to use CephFS on CentOS 7. - AKAI TSUKI ceph dashboard I'd like to use ceph dashboard. http://docs.ceph.com/docs/mimic/mgr/dashboard/ [cuser@ceph01 ~]$ sudo ceph mgr module enable dashboar…

I'd like to use ceph dashboard.

Before this page, please check these post. Try to install Ceph in CentOS 7 referencing "STORAGE CLUSTER QUICK START" - AKAI TSUKI Install Ceph in CentOS 7. - AKAI TSUKI I'd like to use CephFS. http://docs.ceph.com/docs/master/cephfs/create…

I'd like to use CephFS on CentOS 7.

Before you read this page, please check below page. Install Ceph in CentOS 7. - AKAI TSUKI STORAGE CLUSTER QUICK START Please check this url. http://docs.ceph.com/docs/master/start/quick-ceph-deploy/ Install ceph-deploy tool. [root@ceph04 …

Try to install Ceph in CentOS 7 referencing "STORAGE CLUSTER QUICK START"

Preparation PREFLIGHT CHECKLIST http://docs.ceph.com/docs/master/start/quick-start-preflight/ I confirmed this url. I use these nodes. node role ip ceph01 mon.node1/osd.0 172.16.10.111/24 ceph02 osd.1 172.16.10.112/24 ceph03 osd.2 172.16.1…

Install Ceph in CentOS 7.

To create user repeatedly, ansible is useful. I create playbook for password authorization. [root@cent7devops ansible-test]# cat ./hosts [grp_node] node01 ansible_host=172.16.10.111 ansible_user=root node02 ansible_host=172.16.10.112 ansib…

create user by ansible playbook.

AWX/AnsibleAWX/Ansiblenode01node01execute commandexecute command

SVG test

I execute following command to specify inventory file "hosts" and vault password file "vault.txt". By preparing ansible.cfg, I don't have to specify inventory file path and vault password file path every time. [root@cent7devops ansible-tes…

use ansible configuration file "ansible.cfg"

How Container Runtimes matter in Kubernetes? https://schd.ws/hosted_files/ossalsjp18/95/OSSJP_KubernetesRuntimes.pdf

I have to study Container.

This is useful information page for systemd. systemd - ArchWiki

When I study systemd.

When we use ansible, we would like to encrypt secret information like password. Ansbile have ansible-vault command to encrypt. I try ansible-vault command. I create inventory file. [root@cent7devops ansible-test]# cat hosts [test] node01 a…

try to use ansible-vault

[root@localhost ~]# yum install epel-release *snip* Installed: epel-release.noarch 0:7-9 Complete! [root@localhost ~]# [root@localhost ~]# yum --enablerepo=epel install ansible *snip* Installed: ansible.noarch 0:2.5.2-1.el7 Dependency Inst…

install ansible 2.5 on centos 7.

This is useful !? github.com

Can I create streaming video page?