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This repo contains some python scripts to work with python. Script has dependensies on each other, so repo have to cloned, you can't just grub and run selected scripts.

$ git clone https://github.com/koder-ua/ceph-tools.git
$ cd ceph-tools
$ pip install -r requirements.txt

rebalance.py

This script allows to gently change a weight of set of OSD by increasing/decreasing it with small step and wait till rebalance complete.

To run it ones need to create yaml file, describing expected weights of OSD's. Example:

step: 0.1 # max weight change in one step for one OSD
restep: 0.02 # max reweight change in one step for one OSD
max_updated_nodes: 4 # max OSD, updated in parallel
min_weight_diff: 0.01 # minimal weight change to be applied
# e.g. if current weight is 1.222 and required weight is 1.223 weight would not be changed
min_reweight_diff: 0.01 # minimal reweight change to be applied, same as above
osds: # list of OSD
# root/host/name - path in CRUSH to select osd
- osd: osd.0
root: default host: osd-0
weight: 0.3 # new weight
reweight: 0.95 # new reweight
- osd: osd.1
root: default
host: osd-2
weight: 0.3
- osd: osd.2
root: default
host: osd-1
weight: 0.3
# For reweight change - be aware that osd can't have different reweight in different subtree's
- osd: osd.2
reweight: 0.95
- osd: osd.122
reweight: 0.9

Estimate how many data would be moved during rebalance:

$ python rebalance.py -q -e rebalance.yaml
Total bytes to be moved : 2.2 GiB
Total PG to be moved : 71

Run rebalance:

$ python rebalance.py rebalance.yaml root=default/host=ceph-osd0/osd=osd.0 weight = 0.018 => 0.2
root=default/host=ceph-osd1/osd=osd.1 weight = 0.018 => 0.2
root=default/host=ceph-osd3/osd=osd.2 weight = 0.018 => 0.2
root=default/host=ceph-osd2/osd=osd.3 weight = 0.018 => 0.2
Total sum of all weight changes 0.8
Total bytes to be moved : 2.0 GiB
Total PG to be moved : 63
Waiting for cluster to complete rebalance done
ceph osd crush set osd.0 0.499979 root=default host=osd-0
Waiting for cluster to complete rebalance done
Done 12%
ceph osd crush set osd.1 0.2 root=default host=osd-2
....

You can stop tool at any time and then start again - it will continue from where it finished.

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Random scripts to work with ceph

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Readme
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4 stars

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3 forks
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, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Add copy buttons to all 
 blocks\n(function() {\n function addCopyButtons() {\n document.querySelectorAll('pre code').forEach(function(codeBlock) {\n if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;\n codeBlock.parentElement.setAttribute('data-copy-added', 'true');\n \n var btn = document.createElement('button');\n btn.textContent = 'Copy';\n btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';\n btn.onmouseover = function() { this.style.opacity = '1'; };\n btn.onmouseout = function() { this.style.opacity = '0.7'; };\n btn.onclick = function() {\n navigator.clipboard.writeText(codeBlock.textContent).then(function() {\n btn.textContent = 'Copied!';\n setTimeout(function() { btn.textContent = 'Copy'; }, 1500);\n });\n };\n codeBlock.parentElement.style.position = 'relative';\n codeBlock.parentElement.appendChild(btn);\n });\n }\n \n addCopyButtons();\n \n // Re-run on dynamic content\n var observer = new MutationObserver(addCopyButtons);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Add Copy Buttons to Code Blocks");
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '

Skip to content
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This repo contains some python scripts to work with python.
Script has dependensies on each other, so repo have to cloned,
you can't just grub and run selected scripts.
$ git clone https://github.com/koder-ua/ceph-tools.git
$ cd ceph-tools
$ pip install -r requirements.txt

rebalance.py
This script allows to gently change a weight of set of OSD by increasing/decreasing it with small step
and wait till rebalance complete.
To run it ones need to create yaml file, describing expected weights of OSD's.
Example:
step: 0.1 # max weight change in one step for one OSD
restep: 0.02 # max reweight change in one step for one OSD
max_updated_nodes: 4 # max OSD, updated in parallel
min_weight_diff: 0.01 # minimal weight change to be applied
# e.g. if current weight is 1.222 and required weight is 1.223 weight would not be changed
min_reweight_diff: 0.01 # minimal reweight change to be applied, same as above
osds: # list of OSD
# root/host/name - path in CRUSH to select osd
- osd: osd.0
root: default host: osd-0
weight: 0.3 # new weight
reweight: 0.95 # new reweight
- osd: osd.1
root: default
host: osd-2
weight: 0.3
- osd: osd.2
root: default
host: osd-1
weight: 0.3
# For reweight change - be aware that osd can't have different reweight in different subtree's
- osd: osd.2
reweight: 0.95
- osd: osd.122
reweight: 0.9

Estimate how many data would be moved during rebalance:
$ python rebalance.py -q -e rebalance.yaml
Total bytes to be moved : 2.2 GiB
Total PG to be moved : 71

Run rebalance:
$ python rebalance.py rebalance.yaml root=default/host=ceph-osd0/osd=osd.0 weight = 0.018 => 0.2
root=default/host=ceph-osd1/osd=osd.1 weight = 0.018 => 0.2
root=default/host=ceph-osd3/osd=osd.2 weight = 0.018 => 0.2
root=default/host=ceph-osd2/osd=osd.3 weight = 0.018 => 0.2
Total sum of all weight changes 0.8
Total bytes to be moved : 2.0 GiB
Total PG to be moved : 63
Waiting for cluster to complete rebalance done
ceph osd crush set osd.0 0.499979 root=default host=osd-0
Waiting for cluster to complete rebalance done
Done 12%
ceph osd crush set osd.1 0.2 root=default host=osd-2
....

You can stop tool at any time and then start again - it will continue
from where it finished.
About
Random scripts to work with ceph
Resources
Readme
Apache-2.0 license
Activity
Stars
4 stars
Watchers
1 watching
Forks
3 forks
Report repository
Releases
Packages
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Force GitHub README to respect dark mode\n(function() {\n var style = document.createElement('style');\n style.textContent = '\n .markdown-body {\n color-scheme: dark light;\n }\n .markdown-body pre { background: #161b22 !important; }\n .markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }\n .markdown-body table th, .markdown-body table td { border-color: #30363d !important; }\n .markdown-body img { background: #0d1117; }\n .markdown-body blockquote { border-left-color: #8b949e; }\n .markdown-body hr { border-color: #30363d; }\n ';\n document.head.appendChild(style);\n})();", "GitHub Dark Mode README Fix");
}
} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
BranchesTags
Repository files navigation
This repo contains some python scripts to work with python.
Script has dependensies on each other, so repo have to cloned,
you can't just grub and run selected scripts.
$ git clone https://github.com/koder-ua/ceph-tools.git
$ cd ceph-tools
$ pip install -r requirements.txt

rebalance.py
This script allows to gently change a weight of set of OSD by increasing/decreasing it with small step
and wait till rebalance complete.
To run it ones need to create yaml file, describing expected weights of OSD's.
Example:
step: 0.1 # max weight change in one step for one OSD
restep: 0.02 # max reweight change in one step for one OSD
max_updated_nodes: 4 # max OSD, updated in parallel
min_weight_diff: 0.01 # minimal weight change to be applied
# e.g. if current weight is 1.222 and required weight is 1.223 weight would not be changed
min_reweight_diff: 0.01 # minimal reweight change to be applied, same as above
osds: # list of OSD
# root/host/name - path in CRUSH to select osd
- osd: osd.0
root: default host: osd-0
weight: 0.3 # new weight
reweight: 0.95 # new reweight
- osd: osd.1
root: default
host: osd-2
weight: 0.3
- osd: osd.2
root: default
host: osd-1
weight: 0.3
# For reweight change - be aware that osd can't have different reweight in different subtree's
- osd: osd.2
reweight: 0.95
- osd: osd.122
reweight: 0.9

Estimate how many data would be moved during rebalance:
$ python rebalance.py -q -e rebalance.yaml
Total bytes to be moved : 2.2 GiB
Total PG to be moved : 71

Run rebalance:
$ python rebalance.py rebalance.yaml root=default/host=ceph-osd0/osd=osd.0 weight = 0.018 => 0.2
root=default/host=ceph-osd1/osd=osd.1 weight = 0.018 => 0.2
root=default/host=ceph-osd3/osd=osd.2 weight = 0.018 => 0.2
root=default/host=ceph-osd2/osd=osd.3 weight = 0.018 => 0.2
Total sum of all weight changes 0.8
Total bytes to be moved : 2.0 GiB
Total PG to be moved : 63
Waiting for cluster to complete rebalance done
ceph osd crush set osd.0 0.499979 root=default host=osd-0
Waiting for cluster to complete rebalance done
Done 12%
ceph osd crush set osd.1 0.2 root=default host=osd-2
....

You can stop tool at any time and then start again - it will continue
from where it finished.
About
Random scripts to work with ceph
Resources
Readme
Apache-2.0 license
Activity
Stars
4 stars
Watchers
1 watching
Forks
3 forks
Report repository
Releases
Packages
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Highlight search terms from Google/DuckDuckGo/Bing referrer\n(function() {\n var ref = document.referrer;\n var terms = [];\n \n if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {\n var url = new URL(ref);\n var q = url.searchParams.get('q') || url.searchParams.get('p');\n if (q) {\n terms = q.split(/\\s+/).filter(function(t) { return t.length > 2; });\n }\n }\n \n if (terms.length === 0) return;\n \n var style = document.createElement('style');\n style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';\n document.head.appendChild(style);\n \n function highlight(node) {\n if (node.nodeType === 3) { // text node\n var text = node.textContent;\n var found = false;\n terms.forEach(function(term) {\n var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\\]\\\\]/g, '\\\\') + ')', 'gi');\n if (regex.test(text)) {\n found = true;\n var frag = document.createDocumentFragment();\n var parts = text.split(regex);\n parts.forEach(function(part, i) {\n if (i % 2 === 0) {\n frag.appendChild(document.createTextNode(part));\n } else {\n var span = document.createElement('span');\n span.className = 'userscript-highlight';\n span.textContent = part;\n frag.appendChild(span);\n }\n });\n node.parentNode.replaceChild(frag, node);\n }\n });\n } else if (node.nodeType === 1 && node.childNodes) { // element\n var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];\n if (!skipTags.includes(node.tagName)) {\n Array.from(node.childNodes).forEach(highlight);\n }\n }\n }\n \n highlight(document.body);\n \n // Re-highlight on dynamic content\n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1 || node.nodeType === 3) highlight(node);\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Highlight Search Terms");
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
BranchesTags
Repository files navigation
This repo contains some python scripts to work with python.
Script has dependensies on each other, so repo have to cloned,
you can't just grub and run selected scripts.
$ git clone https://github.com/koder-ua/ceph-tools.git
$ cd ceph-tools
$ pip install -r requirements.txt

rebalance.py
This script allows to gently change a weight of set of OSD by increasing/decreasing it with small step
and wait till rebalance complete.
To run it ones need to create yaml file, describing expected weights of OSD's.
Example:
step: 0.1 # max weight change in one step for one OSD
restep: 0.02 # max reweight change in one step for one OSD
max_updated_nodes: 4 # max OSD, updated in parallel
min_weight_diff: 0.01 # minimal weight change to be applied
# e.g. if current weight is 1.222 and required weight is 1.223 weight would not be changed
min_reweight_diff: 0.01 # minimal reweight change to be applied, same as above
osds: # list of OSD
# root/host/name - path in CRUSH to select osd
- osd: osd.0
root: default host: osd-0
weight: 0.3 # new weight
reweight: 0.95 # new reweight
- osd: osd.1
root: default
host: osd-2
weight: 0.3
- osd: osd.2
root: default
host: osd-1
weight: 0.3
# For reweight change - be aware that osd can't have different reweight in different subtree's
- osd: osd.2
reweight: 0.95
- osd: osd.122
reweight: 0.9

Estimate how many data would be moved during rebalance:
$ python rebalance.py -q -e rebalance.yaml
Total bytes to be moved : 2.2 GiB
Total PG to be moved : 71

Run rebalance:
$ python rebalance.py rebalance.yaml root=default/host=ceph-osd0/osd=osd.0 weight = 0.018 => 0.2
root=default/host=ceph-osd1/osd=osd.1 weight = 0.018 => 0.2
root=default/host=ceph-osd3/osd=osd.2 weight = 0.018 => 0.2
root=default/host=ceph-osd2/osd=osd.3 weight = 0.018 => 0.2
Total sum of all weight changes 0.8
Total bytes to be moved : 2.0 GiB
Total PG to be moved : 63
Waiting for cluster to complete rebalance done
ceph osd crush set osd.0 0.499979 root=default host=osd-0
Waiting for cluster to complete rebalance done
Done 12%
ceph osd crush set osd.1 0.2 root=default host=osd-2
....

You can stop tool at any time and then start again - it will continue
from where it finished.
About
Random scripts to work with ceph
Resources
Readme
Apache-2.0 license
Activity
Stars
4 stars
Watchers
1 watching
Forks
3 forks
Report repository
Releases
Packages
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Strip utm_, fbclid, gclid, etc. from all links on page\n(function() {\n var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',\n 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',\n 'ref', 'ref_src', 'source', 'medium', 'campaign'];\n \n function cleanUrl(url) {\n try {\n var u = new URL(url, window.location.origin);\n var changed = false;\n trackingParams.forEach(function(p) {\n if (u.searchParams.has(p)) {\n u.searchParams.delete(p);\n changed = true;\n }\n });\n return changed ? u.toString() : url;\n } catch (e) {\n return url;\n }\n }\n \n function cleanLinks() {\n document.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n \n cleanLinks();\n \n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1) {\n if (node.tagName === 'A') cleanLinks();\n node.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Remove Tracking Parameters from Links");
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '

Skip to content
BranchesTags
Repository files navigation
This repo contains some python scripts to work with python.
Script has dependensies on each other, so repo have to cloned,
you can't just grub and run selected scripts.
$ git clone https://github.com/koder-ua/ceph-tools.git
$ cd ceph-tools
$ pip install -r requirements.txt

rebalance.py
This script allows to gently change a weight of set of OSD by increasing/decreasing it with small step
and wait till rebalance complete.
To run it ones need to create yaml file, describing expected weights of OSD's.
Example:
step: 0.1 # max weight change in one step for one OSD
restep: 0.02 # max reweight change in one step for one OSD
max_updated_nodes: 4 # max OSD, updated in parallel
min_weight_diff: 0.01 # minimal weight change to be applied
# e.g. if current weight is 1.222 and required weight is 1.223 weight would not be changed
min_reweight_diff: 0.01 # minimal reweight change to be applied, same as above
osds: # list of OSD
# root/host/name - path in CRUSH to select osd
- osd: osd.0
root: default host: osd-0
weight: 0.3 # new weight
reweight: 0.95 # new reweight
- osd: osd.1
root: default
host: osd-2
weight: 0.3
- osd: osd.2
root: default
host: osd-1
weight: 0.3
# For reweight change - be aware that osd can't have different reweight in different subtree's
- osd: osd.2
reweight: 0.95
- osd: osd.122
reweight: 0.9

Estimate how many data would be moved during rebalance:
$ python rebalance.py -q -e rebalance.yaml
Total bytes to be moved : 2.2 GiB
Total PG to be moved : 71

Run rebalance:
$ python rebalance.py rebalance.yaml root=default/host=ceph-osd0/osd=osd.0 weight = 0.018 => 0.2
root=default/host=ceph-osd1/osd=osd.1 weight = 0.018 => 0.2
root=default/host=ceph-osd3/osd=osd.2 weight = 0.018 => 0.2
root=default/host=ceph-osd2/osd=osd.3 weight = 0.018 => 0.2
Total sum of all weight changes 0.8
Total bytes to be moved : 2.0 GiB
Total PG to be moved : 63
Waiting for cluster to complete rebalance done
ceph osd crush set osd.0 0.499979 root=default host=osd-0
Waiting for cluster to complete rebalance done
Done 12%
ceph osd crush set osd.1 0.2 root=default host=osd-2
....

You can stop tool at any time and then start again - it will continue
from where it finished.
About
Random scripts to work with ceph
Resources
Readme
Apache-2.0 license
Activity
Stars
4 stars
Watchers
1 watching
Forks
3 forks
Report repository
Releases
Packages
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Auto-enable theater mode on YouTube\n(function() {\n function tryTheater() {\n var btn = document.querySelector('button[aria-label=\"Theater mode\"], ytd-player #player button[title=\"Theater mode\"]');\n if (btn && !btn.classList.contains('activated')) {\n btn.click();\n }\n }\n \n // Try immediately\n tryTheater();\n \n // Try after navigation (SPA)\n var lastUrl = location.href;\n setInterval(function() {\n if (location.href !== lastUrl) {\n lastUrl = location.href;\n setTimeout(tryTheater, 500);\n }\n }, 1000);\n \n // Also try on player load\n var observer = new MutationObserver(tryTheater);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "YouTube Theater Mode Default");
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
BranchesTags
Repository files navigation
This repo contains some python scripts to work with python.
Script has dependensies on each other, so repo have to cloned,
you can't just grub and run selected scripts.
$ git clone https://github.com/koder-ua/ceph-tools.git
$ cd ceph-tools
$ pip install -r requirements.txt

rebalance.py
This script allows to gently change a weight of set of OSD by increasing/decreasing it with small step
and wait till rebalance complete.
To run it ones need to create yaml file, describing expected weights of OSD's.
Example:
step: 0.1 # max weight change in one step for one OSD
restep: 0.02 # max reweight change in one step for one OSD
max_updated_nodes: 4 # max OSD, updated in parallel
min_weight_diff: 0.01 # minimal weight change to be applied
# e.g. if current weight is 1.222 and required weight is 1.223 weight would not be changed
min_reweight_diff: 0.01 # minimal reweight change to be applied, same as above
osds: # list of OSD
# root/host/name - path in CRUSH to select osd
- osd: osd.0
root: default host: osd-0
weight: 0.3 # new weight
reweight: 0.95 # new reweight
- osd: osd.1
root: default
host: osd-2
weight: 0.3
- osd: osd.2
root: default
host: osd-1
weight: 0.3
# For reweight change - be aware that osd can't have different reweight in different subtree's
- osd: osd.2
reweight: 0.95
- osd: osd.122
reweight: 0.9

Estimate how many data would be moved during rebalance:
$ python rebalance.py -q -e rebalance.yaml
Total bytes to be moved : 2.2 GiB
Total PG to be moved : 71

Run rebalance:
$ python rebalance.py rebalance.yaml root=default/host=ceph-osd0/osd=osd.0 weight = 0.018 => 0.2
root=default/host=ceph-osd1/osd=osd.1 weight = 0.018 => 0.2
root=default/host=ceph-osd3/osd=osd.2 weight = 0.018 => 0.2
root=default/host=ceph-osd2/osd=osd.3 weight = 0.018 => 0.2
Total sum of all weight changes 0.8
Total bytes to be moved : 2.0 GiB
Total PG to be moved : 63
Waiting for cluster to complete rebalance done
ceph osd crush set osd.0 0.499979 root=default host=osd-0
Waiting for cluster to complete rebalance done
Done 12%
ceph osd crush set osd.1 0.2 root=default host=osd-2
....

You can stop tool at any time and then start again - it will continue
from where it finished.
About
Random scripts to work with ceph
Resources
Readme
Apache-2.0 license
Activity
Stars
4 stars
Watchers
1 watching
Forks
3 forks
Report repository
Releases
Packages
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Remove or un-stick sticky/fixed headers that block content\n(function() {\n function unstick() {\n document.querySelectorAll('header, nav, [role=\"banner\"], .header, .navbar, .sticky, .fixed-top, [style*=\"position: fixed\"], [style*=\"position:sticky\"]').forEach(function(el) {\n if (el.style.position === 'fixed' || el.style.position === 'sticky' || \n getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {\n el.style.position = 'static';\n el.style.top = 'auto';\n el.style.zIndex = 'auto';\n }\n });\n }\n \n unstick();\n \n var observer = new MutationObserver(unstick);\n observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });\n})();", "Kill Sticky Headers");
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
BranchesTags
Repository files navigation
This repo contains some python scripts to work with python.
Script has dependensies on each other, so repo have to cloned,
you can't just grub and run selected scripts.
$ git clone https://github.com/koder-ua/ceph-tools.git
$ cd ceph-tools
$ pip install -r requirements.txt

rebalance.py
This script allows to gently change a weight of set of OSD by increasing/decreasing it with small step
and wait till rebalance complete.
To run it ones need to create yaml file, describing expected weights of OSD's.
Example:
step: 0.1 # max weight change in one step for one OSD
restep: 0.02 # max reweight change in one step for one OSD
max_updated_nodes: 4 # max OSD, updated in parallel
min_weight_diff: 0.01 # minimal weight change to be applied
# e.g. if current weight is 1.222 and required weight is 1.223 weight would not be changed
min_reweight_diff: 0.01 # minimal reweight change to be applied, same as above
osds: # list of OSD
# root/host/name - path in CRUSH to select osd
- osd: osd.0
root: default host: osd-0
weight: 0.3 # new weight
reweight: 0.95 # new reweight
- osd: osd.1
root: default
host: osd-2
weight: 0.3
- osd: osd.2
root: default
host: osd-1
weight: 0.3
# For reweight change - be aware that osd can't have different reweight in different subtree's
- osd: osd.2
reweight: 0.95
- osd: osd.122
reweight: 0.9

Estimate how many data would be moved during rebalance:
$ python rebalance.py -q -e rebalance.yaml
Total bytes to be moved : 2.2 GiB
Total PG to be moved : 71

Run rebalance:
$ python rebalance.py rebalance.yaml root=default/host=ceph-osd0/osd=osd.0 weight = 0.018 => 0.2
root=default/host=ceph-osd1/osd=osd.1 weight = 0.018 => 0.2
root=default/host=ceph-osd3/osd=osd.2 weight = 0.018 => 0.2
root=default/host=ceph-osd2/osd=osd.3 weight = 0.018 => 0.2
Total sum of all weight changes 0.8
Total bytes to be moved : 2.0 GiB
Total PG to be moved : 63
Waiting for cluster to complete rebalance done
ceph osd crush set osd.0 0.499979 root=default host=osd-0
Waiting for cluster to complete rebalance done
Done 12%
ceph osd crush set osd.1 0.2 root=default host=osd-2
....

You can stop tool at any time and then start again - it will continue
from where it finished.
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, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Universal Dark Mode - works on any site\n(function() {\n var enabled = true;\n \n function applyDarkMode() {\n if (!enabled) return;\n \n // Create style element if it doesn't exist\n var style = document.getElementById('universal-dark-mode-style');\n if (!style) {\n style = document.createElement('style');\n style.id = 'universal-dark-mode-style';\n document.head.appendChild(style);\n }\n \n // Dark mode CSS - inverts colors but preserves images/video\n style.textContent = '\n /* Invert everything except media */\n html {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #1a1a2e !important;\n }\n \n /* Restore images, videos, iframes, canvas */\n img, video, iframe, canvas, svg, picture, [style*=\"background-image\"] {\n filter: invert(1) hue-rotate(180deg) !important;\n }\n \n /* Preserve specific elements that should not be inverted */\n .no-dark-mode, .no-dark-mode *,\n [data-theme=\"light\"], [data-theme=\"light\"],\n .ace_editor, .ace_editor *,\n .CodeMirror, .CodeMirror *,\n .monaco-editor, .monaco-editor *,\n .markdown-body pre, .markdown-body pre *,\n .highlight, .highlight *,\n pre code, pre code * {\n filter: none !important;\n }\n \n /* Fix common UI elements */\n .modal, .popup, .dropdown-menu, .tooltip, .popover {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #2d2d44 !important;\n border-color: #444 !important;\n }\n \n /* Scrollbars */\n ::-webkit-scrollbar { background: #1a1a2e !important; }\n ::-webkit-scrollbar-thumb { background: #444 !important; }\n ::-webkit-scrollbar-thumb:hover { background: #555 !important; }\n \n /* Selection */\n ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ';\n }\n \n function removeDarkMode() {\n var style = document.getElementById('universal-dark-mode-style');\n if (style) style.remove();\n }\n \n // Toggle with Alt+Shift+D\n document.addEventListener('keydown', function(e) {\n if (e.altKey && e.shiftKey && e.key === 'D') {\n e.preventDefault();\n enabled = !enabled;\n if (enabled) {\n applyDarkMode();\n console.log('[Universal Dark Mode] Enabled');\n } else {\n removeDarkMode();\n console.log('[Universal Dark Mode] Disabled');\n }\n }\n });\n \n // Apply on load\n applyDarkMode();\n \n // Re-apply on dynamic content\n var observer = new MutationObserver(function(mutations) {\n if (enabled && !document.getElementById('universal-dark-mode-style')) {\n applyDarkMode();\n }\n });\n observer.observe(document.head, { childList: true });\n \n console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');\n})();", "Universal Dark Mode");
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();

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This repo contains some python scripts to work with python.
Script has dependensies on each other, so repo have to cloned,
you can't just grub and run selected scripts.
$ git clone https://github.com/koder-ua/ceph-tools.git
$ cd ceph-tools
$ pip install -r requirements.txt

rebalance.py
This script allows to gently change a weight of set of OSD by increasing/decreasing it with small step
and wait till rebalance complete.
To run it ones need to create yaml file, describing expected weights of OSD's.
Example:
step: 0.1 # max weight change in one step for one OSD
restep: 0.02 # max reweight change in one step for one OSD
max_updated_nodes: 4 # max OSD, updated in parallel
min_weight_diff: 0.01 # minimal weight change to be applied
# e.g. if current weight is 1.222 and required weight is 1.223 weight would not be changed
min_reweight_diff: 0.01 # minimal reweight change to be applied, same as above
osds: # list of OSD
# root/host/name - path in CRUSH to select osd
- osd: osd.0
root: default host: osd-0
weight: 0.3 # new weight
reweight: 0.95 # new reweight
- osd: osd.1
root: default
host: osd-2
weight: 0.3
- osd: osd.2
root: default
host: osd-1
weight: 0.3
# For reweight change - be aware that osd can't have different reweight in different subtree's
- osd: osd.2
reweight: 0.95
- osd: osd.122
reweight: 0.9

Estimate how many data would be moved during rebalance:
$ python rebalance.py -q -e rebalance.yaml
Total bytes to be moved : 2.2 GiB
Total PG to be moved : 71

Run rebalance:
$ python rebalance.py rebalance.yaml root=default/host=ceph-osd0/osd=osd.0 weight = 0.018 => 0.2
root=default/host=ceph-osd1/osd=osd.1 weight = 0.018 => 0.2
root=default/host=ceph-osd3/osd=osd.2 weight = 0.018 => 0.2
root=default/host=ceph-osd2/osd=osd.3 weight = 0.018 => 0.2
Total sum of all weight changes 0.8
Total bytes to be moved : 2.0 GiB
Total PG to be moved : 63
Waiting for cluster to complete rebalance done
ceph osd crush set osd.0 0.499979 root=default host=osd-0
Waiting for cluster to complete rebalance done
Done 12%
ceph osd crush set osd.1 0.2 root=default host=osd-2
....

You can stop tool at any time and then start again - it will continue
from where it finished.
About
Random scripts to work with ceph
Resources
Readme
Apache-2.0 license
Activity
Stars
4 stars
Watchers
1 watching
Forks
3 forks
Report repository
Releases
Packages
Contributors
Languages