Eric Guo's blog.cloud-mes.com

Hoping writing JS, Ruby & Rails and Go article, but fallback to DevOps note

Fix Could Not Find Gem_name in Any of the Sources When Deploy Using Capistrano

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When do running capistrano bundler:install stage, I always meet below error:

00:32 bundler:install

      01 $HOME/.rbenv/bin/rbenv exec bundle install --jobs 4 --quiet

      01 Could not find canonical-rails-0.2.9 in any of the sources

#<Thread:0x00007f92c4af3cd8 /usr/local/lib/ruby/gems/2.7.0/gems/sshkit-1.21.1/lib/sshkit/runners/parallel.rb:10 run> terminated with exception (report_on_exception is true):

Traceback (most recent call last):

  13: from /usr/local/lib/ruby/gems/2.7.0/gems/sshkit-1.21.1/lib/sshkit/runners/parallel.rb:12:in `block (2 levels) in execute'

  12: from /usr/local/lib/ruby/gems/2.7.0/gems/sshkit-1.21.1/lib/sshkit/backends/abstract.rb:31:in `run'

  11: from /usr/local/lib/ruby/gems/2.7.0/gems/sshkit-1.21.1/lib/sshkit/backends/abstract.rb:31:in `instance_exec'

  10: from /usr/local/lib/ruby/gems/2.7.0/gems/capistrano-bundler-2.0.1/lib/capistrano/tasks/bundler.cap:57:in `block (3 levels) in <top (required)>'

After several try debug, found can remove below folder to resolve the problem.

rm -rf /var/www/thape_web/shared/bundle/ruby/2.7.0/cache/bundler/git/canonical-rails-866574f7436cf4f082de6fa4c0958c8dccaccc7a

rm -rf /var/www/thape_web/shared/bundle/ruby/2.7.0/bundler/gems/canonical-rails-*

Maybe do gem update --system and gem install bundler && bundler config default 2.1.4 also help, but at least not the root cause of such error fix.

Migrate Capistrano3-puma to Using SystemD Mode and Puma 5.0

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Source code change

Puma 5.0 removed eaemonization without replacement and finally capistrano3-puma start using systemd to manage the puma server and here is need to do to upgrade puma 4 to puma 5.

Capfile
require 'capistrano/puma'

install_plugin Capistrano::Puma

install_plugin Capistrano::Puma::Nginx

+install_plugin Capistrano::Puma::Systemd

Enable deployer user sudo.

sudo su -

cd /etc/sudoers.d/

echo 'deployer ALL=(ALL) NOPASSWD:ALL' > 80-deployer-user

visudo # refresh only

Enable systemd puma.service

sudo mv /etc/systemd/system/puma.service /etc/systemd/system/puma_prod.service

# $get home folder like /home/deployer

cd && pwd

# replace $home with /home/deployer

sudo vi /etc/systemd/system/puma_prod.service

sudo systemctl daemon-reload

sudo systemctl enable puma_prod

NLS_LANG setting for systemd

Modify systemd.conf at /etc/systemd/system.conf

system.conf
DefaultEnvironment="NLS_LANG='AMERICAN_AMERICA.AL32UTF8'"

Export the CSV Directly in Postgresql Psql

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Export the data from SQL

psql -d postgres

\copy (SELECT vote_options.title, vote_options.vote_index, vote_options.user_votes_count, (DENSE_RANK() OVER(ORDER BY user_votes_count DESC ) ) as rank FROM "vote_options" WHERE "vote_options"."vote_id" = 1 ORDER BY "rank") to 'vote_rank.csv' with csv

Install PostgreSQL 13 and Correct Ruby Pg Gem Support

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Install postgresql13

Installation is similar to postgresql12.

# postgresql v12.3+ require LLVM-toolset-7-clang

sudo yum install centos-release-scl-rh

sudo yum install llvm-toolset-7-clang

# following https://www.postgresql.org/download/linux/redhat/

sudo yum install -y https://download.postgresql.org/pub/repos/yum/reporpms/EL-7-x86_64/pgdg-redhat-repo-latest.noarch.rpm

sudo yum install -y postgresql13-server

sudo /usr/pgsql-13/bin/postgresql-13-setup initdb

sudo systemctl enable postgresql-13

sudo systemctl start postgresql-13

# Checking DB status

sudo systemctl status postgresql-13.service

Install pg gem correctly

bundle config build.pg --with-pg-config=/usr/pgsql-13/bin/pg_config

bundle install

Install ImageMagick 7.0.10 on CentOS 7.8

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Go official imageMagick website to download

sudo su -

wget https://imagemagick.org/download/linux/CentOS/x86_64/ImageMagick-libs-7.0.10-30.x86_64.rpm

wget https://imagemagick.org/download/linux/CentOS/x86_64/ImageMagick-7.0.10-30.x86_64.rpm

yum install libraqm

yum install fftw

yum install libwebp

rpm -Uvh ImageMagick-libs-7.0.10-30.x86_64.rpm

yum remove ImageMagick #  if 6.9.10.68 exist

rpm -Uvh ImageMagick-7.0.10-30.x86_64.rpm

Install Ruby 2.2.10 in New macOS 10.15 and Linux

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RUBY_CONFIGURE_OPTS=--disable-werror rbenv install 2.2.10

See doc if require.

If in Linux:

sudo apt install gcc-6 g++-6

wget https://github.com/openssl/openssl/archive/OpenSSL_1_0_2j.tar.gz

tar xzf OpenSSL_1_0_2j.tar.gz

cd openssl-OpenSSL_1_0_2j

./config --prefix=/opt/openssl/1.0.2j

make depend

make -j$(nproc)

sudo make install

CC=$(which gcc-6) CONFIGURE_OPTS="--with-openssl-dir=/opt/openssl/1.0.2j" rbenv install 2.2.10

Extend the Disk Size in CentOS Which Running in VMware

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Largely copy from Linux Techi

Check whether free space is available space in the volume group

[root@localhost dev]# vgdisplay

  --- Volume group ---

  VG Name               centos

  System ID

  Format                lvm2

  Metadata Areas        1

  Metadata Sequence No  9

  VG Access             read/write

  VG Status             resizable

  MAX LV                0

  Cur LV                3

  Open LV               3

  Max PV                0

  Cur PV                1

  Act PV                1

  VG Size               <199.00 GiB

  PE Size               4.00 MiB

  Total PE              50943

  Alloc PE / Size       28896 / <112.88 GiB

  Free  PE / Size       22047 / 86.12 GiB

  VG UUID               cUFFyw-wCaq-Ym07-TzQY-mii3-y8Xo-IdQRmn

lvextend command to increase the size

[root@localhost ~]# lvextend -L +80G /dev/mapper/centos-root

  Size of logical volume centos/root changed from 100.00 GiB (25600 extents) to 180.00 GiB (46080 extents).

  Logical volume centos/root successfully resized.

Run the resize2fs command

[root@localhost ~]# resize2fs /dev/mapper/centos-root

resize2fs 1.42.9 (28-Dec-2013)

resize2fs: Bad magic number in super-block 当尝试打开 /dev/mapper/centos-root 时

找不到有效的文件系统超级块.

Resolve error due to root is xfs

[root@localhost ~]# cat /etc/fstab

# /etc/fstab

# Created by anaconda on Mon Dec 23 14:28:29 2019

#

# Accessible filesystems, by reference, are maintained under '/dev/disk'

# See man pages fstab(5), findfs(8), mount(8) and/or blkid(8) for more info

#

/dev/mapper/centos-root /                       xfs     defaults        0 0

UUID=48xxxx48-xxxx-xxxx-xxxx-xxxxxxxxxxxx /boot                   xfs     defaults        0 0

/dev/mapper/centos-home /home                   xfs     defaults        0 0

/dev/mapper/centos-swap swap                    swap    defaults        0 0

 
[root@localhost ~]# xfs_growfs /dev/mapper/centos-root

meta-data=/dev/mapper/centos-root isize=512    agcount=8, agsize=3276800 blks

         =                       sectsz=512   attr=2, projid32bit=1

         =                       crc=1        finobt=0 spinodes=0

data     =                       bsize=4096   blocks=26214400, imaxpct=25

         =                       sunit=0      swidth=0 blks

naming   =version 2              bsize=4096   ascii-ci=0 ftype=1

log      =internal               bsize=4096   blocks=6400, version=2

         =                       sectsz=512   sunit=0 blks, lazy-count=1

realtime =none                   extsz=4096   blocks=0, rtextents=0

data blocks changed from 26214400 to 47185920

Presenting Code With Syntax-highlight in Keynote Using Command Tool Highlight

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Just one line

pbpaste | highlight --syntax=rb -O rtf | pbcopy

pbpaste | highlight --syntax=html -O rtf | pbcopy

pbpaste | highlight --syntax=scss -O rtf | pbcopy

pbpaste | highlight --syntax=jsx -O rtf | pbcopy

pbpaste | python -m json.tool | highlight --syntax=json -O rtf | pbcopy

Click to see more language highlight supported.

Note: install highlight first using brew install highlight, original link