====== Log: pkumet.live ======

===== 7 Update Website and DNS =====
2022年2月14日，续费阿里云网站和DNS域名，具体情况如下：
  * 阿里云ECS主机，￥256.2，延一年至2023-4-4
  * 阿里云DNS域名（pkumet.live），￥66，延一年至2023-3-6

===== 6 Update yum =====
yum update on June 21, 2020
<code>
yum update
</code>

===== 5 DokuWiki =====
2020年6月21日，应物理学院个人主页大迁徙，我干脆装个dokuwiki，由于之前已装好php，这真是一次简单而愉快的经历！
<code>
===================================
Install DokuWiki (as group website)
AN EASY JOB
June 21, 2020
at /var/www/html/group
take a look at readme.xwen there
===================================
</code>

具体这个DokuWiki的维护，请参考[[/hardware/site/log|硬件与网站 之 本网站维护记录]]

===== 4 PHP & MediaWiki =====
错误的尝试：用yum安装php：

<code>
yum install php php-pdo
========================================================================================================================
 Package                       Arch                      Version                          Repository               Size
========================================================================================================================
Installing:
 php                           x86_64                    5.4.16-46.el7                    base                    1.4 M
 php-pdo                       x86_64                    5.4.16-46.el7                    base                     99 k
Installing for dependencies:
 libzip                        x86_64                    0.10.1-8.el7                     base                     48 k
 php-cli                       x86_64                    5.4.16-46.el7                    base                    2.7 M
 php-common                    x86_64                    5.4.16-46.el7                    base                    565 k

Transaction Summary
========================================================================================================================
Install  2 Packages (+3 Dependent packages)
</code>

后来发现这个版本事php 5.4，版本太老，不合用，于是不得不卸载之
<code>
SINCE THIS DEFAULT VERSION IS PHP5.4, WAY TOO OLD FOR MEDEAWIKI, I HAVE TO REMOVE THEM BY...
yum erase php php-pdo php-cli php-common
</code>

正确的实践：参考网页[[https://www.tecmint.com/install-mediawiki-on-centos-7/]]，升级yum并安装php7.3，修改MediaWiki的属性，修改php上传/下载文件容量的限制
<code>
===============================================================================
Install MediaWiki (Ref: https://www.tecmint.com/install-mediawiki-on-centos-7/)
===============================================================================
yum install http://rpms.remirepo.net/enterprise/remi-release-7.rpm
yum install epel-release
yum install yum-utils
yum-config-manager --enable remi-php73
yum install php php-pdo php-gd php-mbstring php-xml php-intl
systemctl restart httpd

chown -R apache:apache /var/www/html/mediawiki-1.33.0/
chown -R apache:apache /var/www/html/wiki
chmod 755 /var/www/html/mediawiki-1.33.0/
chmod 755 /var/www/html/wiki/
===============================================================================

Edit /etc/php.ini:
upload_max_filesize 100M (original=2M) 其实后来我又进一步改为500M
post_max_size 128M (original=8M) 其实后来我又进一步改为500M
</code>

===== 3. Vim =====
对编辑器 Vim 进行配置
<code>
add lines at the end of /etc/vimrc:
########################
"set encoding=utf-8
"set number
set tabstop=2
"set expandtab
set autoindent

set encoding=UTF-8              to ensure Chinese input in vim
set fileencoding=UTF-8
########################
</code>

===== 2. Anaconda =====
首先从清华tuna下载anaconda安装包，并安装到/opt目录下
<code>
wget https://mirrors.tuna.tsinghua.edu.cn/anaconda/archive/Anaconda3-5.3.1-Linux-x86_64.sh
then install Anaconda3-5.3.1-Linux-x86_64.sh at /opt/anaconda3-3.5.1
</code>

磁盘容量因为安装anaconda而少了3.2G！！！真够大的！
<code>
Before:
Filesystem      Size  Used Avail Use% Mounted on
/dev/vda1        40G  2.8G   35G   8% /

After:
Filesystem      Size  Used Avail Use% Mounted on
/dev/vda1        40G  6.0G   32G  16% /
</code>

把‘conda init’代码段从 /root/.bashrc 复制到 /etc/bashrc 以便于所有用户都能正确加载
<code>
move 'conda init' code from /root/.bashrc to /etc/bashrc for ALL USERS like:
####################################
# added by Anaconda3 5.3.1 installer
# >>> conda init >>>
# !! Contents within this block are managed by 'conda init' !!
__conda_setup="$(CONDA_REPORT_ERRORS=false '/opt/anaconda3-5.3.1/bin/conda' shell.bash hook 2> /dev/null)"
if [ $? -eq 0 ]; then
    \eval "$__conda_setup"
else
    if [ -f "/opt/anaconda3-5.3.1/etc/profile.d/conda.sh" ]; then
        . "/opt/anaconda3-5.3.1/etc/profile.d/conda.sh"
        CONDA_CHANGEPS1=true conda activate base
    else
        \export PATH="/opt/anaconda3-5.3.1/bin:$PATH"
    fi
fi
unset __conda_setup
# <<< conda init <<<
####################################
</code>

最后生成一下conda已安装包的完整list，并删除安装包（以节省磁盘空间）
<code>
generate a conda list in /opt/anaconda3-5.3.1/condalist-20190307 by 'conda list'
remove the original installer file to save 638M disk space.
</code>

===== 1. Initial Installation =====
最开始，干净的新系统一共占硬盘 1.8G 的容量。使用yum命令安装如下程序：
<code>
yum update
yum upgrade

yum install gcc (already installed, actually do nothing)
yum install gcc-c++ gcc-gfortran

yum install ImageMagick

yum install lftp
yum install mc tree htop
yum install bzip2 (for install anaconda.sh)

yum install w3m
yum install httpd
    vi /etc/httpd/conf/httpd.conf ---> 如果需要，改为 LISTEN 8000，我其实并未改
    vi /etc/httpd/conf.d/userdir.conf ---> comment out "UserDir disabled"; uncomment "UserDir public_html"
    systemctl status  httpd.service
    systemctl start   httpd.service
    systemctl enable  httpd.service
    systemctl restart httpd.service

yum install netcdf nco ncl ncview grads
</code>

===== 0. History =====

2019年3月，闻新宇在aliyun上购买了一个为期3年的云主机，然后购买并绑定在了pkumet.live域名上，该云主机2020年4月3日到期。出于安全和稳定的考虑，这台云主机运行CentOS 7（2019年9月已经释放了CentOS 8，未升级）。主机硬件参数如下：
  * 1 Processor
  * 1G RAM
  * 40G Hard drive
  * ~100KB/sec Upload/Download