I wrote this post at 2018/6/3 18:32:31.
I have 2 system in 1 pc, windows 7 and windows 10, last evening, the windows 7 system updated, it should not be a problem. but after I update, my data disk get a permission problem, the reason is: I use different user in the two system. So, please be careful when mount low version data.
Dot is a script language in Graphviz tool box to create graphs. Using layout engine to create graph, then we can export graph to many format of image, such as png, jpg, svg .etc. So we can use it to ‘paint’ structure diagram, and flow charts.
Commonly used keywords
graph: define properties of the graph
node: define properties of nodes in the graph, such as fontname
subgraph: define a subgraph, should start with ‘cluster_’, or the engine can’t recognize it.
For example
digraph service_map {
graph [dpi="300"];
node [color="gray";shape="record";fontname="Microsoft YaHei"];
label="Service Map";
Request;
github_pages [label="GitHub Pages"];
subgraph cluster_web{
label="Web front end server";
nginx [label="Reverse Proxy Server"];
docker [label="Docker Container Manager"];
}
subgraph cluster_docker{
label="Docker Container Manager";
openproject [label="OpenProject"];
gitlab [label="GitLab"];
wordpress [label="WordPress"];
mysql [label="Common Mysql Database"];
}
subgraph cluster_filesystem{
label="Mount at where";
openproject_mnt [label="/opt/openproject/data:/var/lib/postgresql/9.6/main\l\n/opt/openproject/logs:/var/log/supervisor\l\n/opt/openproject/static:/var/db/openproject\l"];
gitlab_mnt [label="/opt/gitlab/config:/etc/gitlab\l\n/opt/gitlab/logs:/var/log/gitlab\l\n/opt/gitlab/data:/var/opt/gitlab\l"];
wordpress_mnt [label="/opt/wordpress/www:/var/www/html"];
mysql_mnt [label="/opt/mysql/data:/var/lib/mysql"];
}
Request->nginx;
nginx->docker;
nginx->github_pages;
docker->wordpress [label="hostname=wordpress.endercaster.com"];
docker->openproject [label="hostname=openproject.endercaster.com"];
docker->gitlab [label="hostname=gitlab.endercaster.com"];
wordpress->mysql;
wordpress->wordpress_mnt [label="mount"];
openproject->openproject_mnt [label="mount"];
gitlab->gitlab_mnt [label="mount"];
mysql->mysql_mnt [label="mount"];
}
The code generated a diagram below
Using dot, I don’t have to care about layout, just pay attention to modules in software, what feature does it provide. It’s easily to use, I like it.
Use F12 to open developer panel, switch to “network” tab, click disable cache, it means: when access this site, don’t use cache.
Aims to:
A program contains setuid(geteuid()).
Requirement:
Bash version lower than 4.1
Reason:
When run, bash will load envirment vars, and custom function, like
export foo='(){:;};echo hello bash'
When I try this vulnerability, I type geteuid as getuid, and have not triger this.
At the first line, I wanna say: docker is the best tool to improve the production efficiency.
I want to build my own site for a long time, and today, succeed. I depley the three site at one server (my laptop, ThinkPad X1C 2014), the site works very smoothly. So I record my action below.
MySql
sudo apt-get update && sudo apt-get install mysql-server
WordPress
docker run -itd --name wordpress \
-v /opt/wordpress/html:/var/www/html \
-p 12080:80 \
wordpress
OpenProject
docker run -itd --name openproject \
-v /opt/openproject/pgdata:/var/lib/postgresql/9.6/main \
-v /opt/openproject/logs:/var/log/supervisor \
-v /opt/openproject/static:/var/db/openproject \
-p 10080:80 \
openproject/community
Gitlab
docker run -itd --name gitlab \
--hostname gitlab.endercaster.lan \
-v /opt/gitlab/config:/etc/gitlab \
-v /opt/gitlab/logs:/var/log/gitlab \
-v /opt/gitlab/data:/var/opt/gitlab \
-p 11080:80 \
-p 11022:22 \
-p 11443:443 \
gitlab/gitlab-ce
Then, using nginx as reverse proxy, proxy by host.