This is useful information page for systemd. systemd - ArchWiki
try to use ansible-vault
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 ansible_host=172.16.10.101 ansible_user=root [root@cent7devops ansible-test]#
I create host variables file.
[root@cent7devops ansible-test]# cat host_vars/node01.yml --- ansible_ssh_pass: passwordstring [root@cent7devops ansible-test]#
I encrypt host variables file.
"vault.txt" is a file to provide a vault password.
[root@cent7devops ansible-test]# ansible-vault encrypt host_vars/node01.yml --vault-id ./vault.txt Encryption successful [root@cent7devops ansible-test]#
I view the contents of an encrypted file.
[root@cent7devops ansible-test]# ansible-vault view host_vars/node01.yml --vault-id ./vault.txt --- ansible_ssh_pass: passwordstring [root@cent7devops ansible-test]#
I confirm variables of "node01" by ansible-inventory command
[root@cent7devops ansible-test]# ansible-inventory -i hosts --host node01 --vault-id ./vault.txt
{
"ansible_host": "172.16.10.101",
"ansible_ssh_pass": "passwordstring",
"ansible_user": "root"
}
[root@cent7devops ansible-test]#
install ansible 2.5 on centos 7.
[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 Installed: PyYAML.x86_64 0:3.10-11.el7 libtomcrypt.x86_64 0:1.17-26.el7 libtommath.x86_64 0:0.42.0-6.el7 libyaml.x86_64 0:0.1.4-11.el7_0 python-babel.noarch 0:0.9.6-8.el7 python-backports.x86_64 0:1.0-8.el7 python-backports-ssl_match_hostname.noarch 0:3.4.0.2-4.el7 python-cffi.x86_64 0:1.6.0-5.el7 python-enum34.noarch 0:1.0.4-1.el7 python-httplib2.noarch 0:0.9.2-1.el7 python-idna.noarch 0:2.4-1.el7 python-ipaddress.noarch 0:1.0.16-2.el7 python-jinja2.noarch 0:2.7.2-2.el7 python-keyczar.noarch 0:0.71c-2.el7 python-markupsafe.x86_64 0:0.11-10.el7 python-paramiko.noarch 0:2.1.1-4.el7 python-ply.noarch 0:3.4-11.el7 python-pycparser.noarch 0:2.14-1.el7 python-setuptools.noarch 0:0.9.8-7.el7 python-six.noarch 0:1.9.0-2.el7 python2-crypto.x86_64 0:2.6.1-15.el7 python2-cryptography.x86_64 0:1.7.2-1.el7_4.1 python2-jmespath.noarch 0:0.9.0-3.el7 python2-pyasn1.noarch 0:0.1.9-7.el7 sshpass.x86_64 0:1.06-2.el7 Complete! [root@localhost ~]#
[root@localhost ~]# ansible --version ansible 2.5.2 config file = /etc/ansible/ansible.cfg configured module search path = [u'/root/.ansible/plugins/modules', u'/usr/share/ansible/plugins/modules'] ansible python module location = /usr/lib/python2.7/site-packages/ansible executable location = /usr/bin/ansible python version = 2.7.5 (default, Aug 4 2017, 00:39:18) [GCC 4.8.5 20150623 (Red Hat 4.8.5-16)] [root@localhost ~]#
Can I create streaming video page?
This is useful !?
When we study java and spring boot and docker.
When we study java and spring boot and docker, please check.
https://blog.docker.com/2018/03/video-series-modernizing-java-apps-developers-part-1/
https://blog.docker.com/2018/03/video-series-modernizing-java-apps-developers-part-2/
https://blog.docker.com/2018/03/video-series-modernizing-java-apps-developers-part-3/
https://blog.docker.com/2018/04/video-series-modernizing-java-apps-developers-part-4/
https://training.play-with-docker.com/ops-landing/
-> Stage 1: The Basics
https://spring.io/guides/gs/spring-boot-docker/
Spring Boot with Docker
I found python-fire library.
github.com This looks good. I will try to use this.
check index infomation by REST API
infomation
# curl http://localhost:9200/customer?pretty
{
"customer" : {
"aliases" : { },
"mappings" : { },
"settings" : {
"index" : {
"creation_date" : "1514796397799",
"number_of_shards" : "5",
"number_of_replicas" : "1",
"uuid" : "2bDYA53CQp6lvXxoHe_jAQ",
"version" : {
"created" : "5040399"
},
"provided_name" : "customer"
}
}
}
}
#
settings
# curl http://localhost:9200/customer/_settings?pretty
{
"customer" : {
"settings" : {
"index" : {
"creation_date" : "1514796397799",
"number_of_shards" : "5",
"number_of_replicas" : "1",
"uuid" : "2bDYA53CQp6lvXxoHe_jAQ",
"version" : {
"created" : "5040399"
},
"provided_name" : "customer"
}
}
}
}
#
mappings
# curl http://localhost:9200/customer/_mappings?pretty
{
"customer" : {
"mappings" : { }
}
}
#
alias
# curl http://localhost:9200/customer/_alias?pretty
{
"customer" : {
"aliases" : { }
}
}
#
mappings and alias
# curl http://localhost:9200/customer/_mappings,_alias?pretty
{
"customer" : {
"mappings" : { },
"aliases" : { }
}
}
#
