Deep dive into Kernel

proxy 아래에서 명령어를 실행하는 것은 OTL 1안)pip install xxxx --proxy= 2안)pip install xxx --proxy= --trusted-host pypi.python.org

16.04 xenial stretch / sid 15.10 wily jessie / sid 15.04 vivid jessie / sid 14.10 utopic jessie / sid 14.04 trusty jessie / sid 13.10 saucy wheezy / sid 13.04 raring wheezy / sid 12.10 quantal wheezy / sid 12.04 precise wheezy / sid 11.10 oneiric wheezy / sid 11.04 natty squeeze / sid 10.10 maverick squeeze / sid 10.04 lucid squeeze / sid Debian Release namingVersionCode nameRelease dateToy Stor..

CentOS 를 설치하면 /etc/hosts 에는 localhost 만 등록되어 있다.DHCP로 IP를 받고 hostname 을 받은 경우, 자동으로 hosts 파일을 업데이트 할 수 있다. #!/bin/sh# for Ubuntu# /etc/dhcp/dhclient-exit-hooks.d/sethostname# for CentOS# /etc/dhcp/dhclient.d/sethostname # for debugging:echo "sethostname BEGIN"exportset -x echo new_ip_address=$new_ip_addressecho new_host_name=$new_host_nameecho new_domain_name=$new_domain_name oldhostname=$(hostn..

Firewalld 서비스 시작[root@mnode ~]# systemctl restart firewalld.service Firewall 은 Pre-defined 된 Zone이 정의 되어 있다. [root@mnode ~]# firewall-cmd --get-zonesblock dmz drop external home internal public trusted workdrop: The lowest level of trust. All incoming connections are dropped without reply and only outgoing connections are possible.block: Similar to the above, but instead of simply dropping conne..

systemd[190]: Failed at step NAMESPACE spawning /usr/libexec/mariadb-prepare-db-dir: Operation not permittedLeave a replysed -i s/PrivateTmp=True/PrivateTmp=False/ /lib/systemd/system/mariadb.service systemctl daemon-reload systemctl start mariadb

[mysql] use mysql; [mysql] update user set plugin='' where User='root'; [mysql] flush privileges; [mysql] \q

SSL 관련하여 connection fail 이 발생 한 경우 C:\Program Files\Java\jre1.8.0_101\lib\security\cacerts 파일을 C:\Users\\AppData\LocalLow\Sun\Java\Deployment\security\trusted.certs 라는 파일로 복사하여 넣어야 함 javaws 에서 SSL 통신시 trusted.certs 파일을 참조하는 것 같다.

VM에 DHCP IP를 할당하고 싶을 때http://serverfault.com/questions/627238/kvm-libvirt-how-to-configure-static-guest-ip-addresses-on-the-virtualisation-ho

http://serverfault.com/questions/729457/python-boto3-allow-ingress-security-groups ec2 = boto3.resource('ec2') mysg = ec2.create_security_group(GroupName="testgroup",Description='testme') mysg.authorize_ingress(IpProtocol="tcp",CidrIp="0.0.0.0/0",FromPort=80,ToPort=80)