PAF | PostgreSQL Automatic Failover : High-Availibility | Monitoring library
kandi X-RAY | PAF Summary
kandi X-RAY | PAF Summary
Pacemaker is nowadays the industry reference for High Availability. In the same fashion than for Systemd, all Linux distributions moved (or are moving) to this unique Pacemaker+Corosync stack, removing all other existing high availability stacks (CMAN, RGManager, OpenAIS, ...). It is able to detect failure on various services and automatically decide to failover the failing resource to another node when possible. To be able to manage a specific service resource, Pacemaker interact with it through a so-called "Resource Agent". Resource agents must comply to the OCF specification which define what they must implement (start, stop, promote, etc), how they should behave and inform Pacemaker of their results. PostgreSQL Automatic Failover is a new OCF resource Agent dedicated to PostgreSQL. Its original wish is to keep a clear limit between the Pacemaker administration and the PostgreSQL one, to keep things simple, documented and yet powerful. Once your PostgreSQL cluster built using internal streaming replication, PAF is able to expose to Pacemaker what is the current status of the PostgreSQL instance on each node: master, slave, stopped, catching up, etc. Should a failure occurs on the master, Pacemaker will try to recover it by default. Should the failure be non-recoverable, PAF allows the slaves to be able to elect the best of them (the closest one to the old master) and promote it as the new master. All of this thanks to the robust, feature-full and most importantly experienced project: Pacemaker. For information about how to install this agent, see INSTALL.md.
Support
Quality
Security
License
Reuse
Top functions reviewed by kandi - BETA
Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of PAF
PAF Key Features
PAF Examples and Code Snippets
Community Discussions
Trending Discussions on PAF
QUESTION
I have a text with links inside, so I try to match them with regex, but somehow the last step I miss..
Link to regex - https://regex101.com/r/pXzZvA/1
The text:
...ANSWER
Answered 2022-Feb-14 at 12:16use: (?:https?:\/\/)?(?:\w+\.)?sub\.mydomain\.com\/(?:\w+-?\/?)+
(?:https?:\/\/) : contain https:// or not (http or https)
(?:\w+\.)? : contain a word follow by . or not
sub\.mydomain\.com\/ : must contain sub.mydomain.com/
(?:\w+-?\/?)+ : contain many forms of abc/abc/abc/.../... or not (and may be contained a - after the word or not)
QUESTION
I have a workbook with multiple sheets ,the number of sheets can change for each project but they all end with PAF. The table is the same across all sheets as well as the cells.
I have a summary tab with the exact same table, I just need to sum it all up there, the table has at least 6 columns and 20 rows so each cell would need the same formula (basically) so I came up with the following but I'm getting an error. Any suggestions?
...ANSWER
Answered 2022-Jan-07 at 06:34I have commented the code so you should not have a problem understanding it.
QUESTION
I have a bat file that extracts the target of the given shortcut in the parameter
...ANSWER
Answered 2021-Jun-13 at 20:00The simplest way is to use the already existing output Target name, instead of assigning the name shortcutPath to it. As long as your passed argument is a valid and working shortcut file, your resulting variable will be accessible as %Target%.
QUESTION
Here is the SQL query I am trying to run in oracle live SQL:
...ANSWER
Answered 2021-Mar-20 at 15:18The correct way to write this query is something like this:
QUESTION
I am trying to record sound using microphone and sox library in C/C++.
...ANSWER
Answered 2020-Sep-15 at 13:23As the last parameter to sox_open_read function for microphone input, one of the audio devices drivers should be passed. In my case, it is 'alsa'.
Example:
QUESTION
this question is linked to a previous one answered by @Rui Barradas and @Duck, but i need more help. Previous link here: how do i vectorise (automate) plot creation in R
Basically, I need to combine 3 datasets into one plot with a secondary y axis. All datasets need to be split by SITENAME and will facet wrap by Sampling.Year. I am using split and sapply. Being facet wrap the plots look something like this:
However, i'm now trying to add the two other data sources into the plots, to look something like this:
But i am struggling to add the two other data sources and get them to split by SITENAME. Her is my code so far...
Record plot format as a function to be applied to a split list df (ideally 'df' would be added as geom_line with a secondary y axis, and 'FF_start_dates' will be added as a vertical dashed line):
...ANSWER
Answered 2020-Aug-12 at 18:11You can try next code. I used the data you shared. Just be careful with names of all datasets. Ideally, the key columns as DATE and Sampling.Year should be present in all dataframes before making the split. Also some variables as Risk was absent so I added an example var with same name. Here the code, I added a function for the plot you want:
QUESTION
edited to include sample data: Sample data
I have been trying to write code to generate and save multiple plots from a large dataset and have to admit defeat. Would love some help if possible.. i have a df (dat) of 4 years of daily monitoring data (sampling year goes July - June, so Sampling.Year notation is YYYY-YYYY). I would like to export jpgs for each SITENAME, with facet wrap/facet grid so each Sampling.Year is stacked vertically. Individual Sampling.Year plots show timeseries data for the full year (x=DATE, y = Daily.Ave.PAF). End result should be individual jpg files (SITENAME saved in file name) with sampling years stacked but DATE (x axis) aligned. That way we can get a quick snapshot of differences over time. The string is below and my (probably crappy) code is below that. The code is exporting plots just fine, but the data seems to be mixed up - i.e. where a SITENAME only has 2 Sampling.Years worth of data there should only be 2 plots in the jpg but this code produces 4... it's obviously wrong but I don't know how to fix it. THanks in advance.
...ANSWER
Answered 2020-Jul-25 at 12:59This code can help you. I have used the data you included (Just define a directory to save the plots):
QUESTION
I have a Scaffold called contracts and a Model called Addresses. I want to add call my model in the scaffold. in the Contrato.rb (Model) I have:
...ANSWER
Answered 2020-Jul-03 at 20:48I solved adding
QUESTION
I have code for pose estimated. I am trying to run in real-time but OpenCV not showing the video. How to solve this error? I can not find any issues.
When I use cv2.imshow("Video", dst) that also not working.
My camera is working properly. I tried it with small python code. Then imshow also worked. When I try with this code it is not working. My camera is USB type and I am working on the Ubuntu platform.
This code is running without any errors only problem is imshow window not showing.
Code:
...ANSWER
Answered 2020-May-19 at 13:19you need to put
QUESTION
I have an XML which looks like this:
...ANSWER
Answered 2020-Feb-09 at 21:38To get your t_object you're running triple.get() instead of triple.find(). Changing that fixes your problem.
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
Vulnerabilities
No vulnerabilities reported
Install PAF
slave must be in hot_standby (accept read-only connections) ;
the following parameters must be configured in the appropriate place : standby_mode = on (for PostgreSQL 11 and before) recovery_target_timeline = 'latest' primary_conninfo wih application_name set to the node name as seen in Pacemaker.
these last parameters has been merged inside the instance configuration file with PostgreSQL 12. For PostgreSQL 11 and before, you must provide a recovery.conf template file.
bindir: location of the PostgreSQL binaries (default: /usr/bin)
pgdata: location of the PGDATA of your instance (default: /var/lib/pgsql/data)
datadir: path to the directory set in data_directory from your postgresql.conf file. This parameter has same default than PostgreSQL itself: the pgdata parameter value. Unless you have a special PostgreSQL setup and you understand this parameter, ignore it
pghost: the socket directory or IP address to use to connect to the local instance (default: /tmp or /var/run/postgresql for DEBIAN)
pgport: the port to connect to the local instance (default: 5432)
recovery_template: only for PostgreSQL 11 and before. The local template that will be copied as the PGDATA/recovery.conf file. This file must not exist on any node for PostgreSQL 12 and after. (default: $PGDATA/recovery.conf.pcmk)
start_opts: Additional arguments given to the postgres process on startup. See "postgres --help" for available options. Useful when the postgresql.conf file is not in the data directory (PGDATA), eg.: -c config_file=/etc/postgresql/9.3/main/postgresql.conf
system_user: the system owner of your instance's process (default: postgres)
maxlag: maximum lag allowed on a standby before we set a negative master score on it. The calculation is based on the difference between the current xlog location on the master and the write location on the standby. (default: 0, which disables this feature)
Support
Reuse Trending Solutions
Find, review, and download reusable Libraries, Code Snippets, Cloud APIs from over 650 million Knowledge Items
Find more librariesStay Updated
Subscribe to our newsletter for trending solutions and developer bootcamps
Share this Page
